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reacts with water?
NCERT ACTIVITY SOLUTION2: PERIODIC CLASSIFICATION OF Question:3. Similary find out the valency of first twenty elements. Answer: (1) Electronic configuration of Hydrogen (Atomic number: 1) = 1. Valence electrons of Hydrogen = 1. Thus, Valence of hydrogen = 1. (2) Electronic configuration of Helium (Atomic number: 2) = 2. Valence electrons of Helium (He) = 0. 12-CHEMISTRY:ELECTROCHEMISTRY-INTRODUCTION TO ELECTROCHEMISTRY Introduction to Electrochemistry. Electrochemistry is a branch of Physical Chemistry that studies the relationship between chemical reaction and production of electricity. NUTRITION IN PLANTS: QUESTIONS OF BOOJHO AND PAHELI7TH SCIENCE Thus, pitcher plants eat insects to fulfill the requirement of those nutrients which they not get from soil in which they grow. Question (8) Boojho wants to know how these organisms acquire nutrients. They do not have mouths like animals do. They are not like green plants as they lack chlorophyll and cannot make food by photosynthesis. WATER POLLUTION: QUESTIONS BASED ON TRUE-FALSE Question: 10. Bathing of cattle, people and washing of utensils in the rivers and ponds must be prevented to prevent water pollution. Answer: True. Question: 11. Water is natural home for many plants and animals. Answer: True. Question: 12. If animals eat infected plants, they may also infected and fallen sick. 12-CHEMISTRY:SOLUTIONS-SOLUBILITY OF A GAS IN A LIQUID It is clear from the above Henry’s Law equation that. (i) Solubility of a gas in liquid increases with increase in pressure and vice verse. That is solubility of gas in liquid decreases with decrease in pressure. (ii) The solubility of a gas in liquid decreases with increase in Henry’s Law constant (K H ), at a given pressure. NCERT EXEMPLAR SOLUTION:LONG ANSWER: ACID BASE & SALT-10TH NCERT Exemplar Solution:Long Answer. Question: 43. In the following schematic diagram for the preparation of hydrogen gas as shown in Figure 2.3, what would happen if following changes are made? (a) In place of zinc granules, same amount of zinc dust is taken in the test tube. (b) Instead of dilute sulphuric acid, dilute hydrochloric acidis taken.
TENTH MATH CHAPTER LIST-HINDI MEDIUMTRANSLATE THIS PAGE दशवीं गणित (Math Tenth:Hindi Medium) वास्तविक संख्याएँ. The Fundamental Theorem of Arithmetic. अंक गणित की आधारभूत प्रमेय (The Fundamental Theorem of Arithmetic) के अनुसार प्रत्येक भाज्य संख्या को अभाज्य संख्याओं MATTER IN OUR SURROUNDINGS: NCERT CHAPTER ACTIVITY Activity: 1.2. Take 2-3 crystals of potassium permanganate and dissolve them in 100 mL of water. Take out approximately 10 mL of this solution and put it into 90 mL of clear water. Take out 10 mL of this solution and put it into another 90 mL of clear water. Keep diluting the solution like this 5 to 8 times. REAL NUMBERS: NCERT EXERCISE 1.3 77 210. Solution: 77 210 = 11 × 7 30 × 7. = 11 30 = 11 2 × 5 × 3. We know that if denominator q of a rational number p q is in the form of 2n × 5m then rational number has terminating decimal expression otherwise rational number has non-terminating decimal expression. Now, since denominator of the given rational number is not in the form FAQS-MCQS CLASS 10 CHEMICAL REACTIONS AND EQUATIONS-WHICH MCQs – Chemical Reactions and Equations class 10 science Try MCQ Test Review Question: Which product is formed when calcium oxidereacts with water?
NCERT ACTIVITY SOLUTION2: PERIODIC CLASSIFICATION OF Question:3. Similary find out the valency of first twenty elements. Answer: (1) Electronic configuration of Hydrogen (Atomic number: 1) = 1. Valence electrons of Hydrogen = 1. Thus, Valence of hydrogen = 1. (2) Electronic configuration of Helium (Atomic number: 2) = 2. Valence electrons of Helium (He) = 0. 12-CHEMISTRY:ELECTROCHEMISTRY-INTRODUCTION TO ELECTROCHEMISTRY Introduction to Electrochemistry. Electrochemistry is a branch of Physical Chemistry that studies the relationship between chemical reaction and production of electricity. NUTRITION IN PLANTS: QUESTIONS OF BOOJHO AND PAHELI7TH SCIENCE Thus, pitcher plants eat insects to fulfill the requirement of those nutrients which they not get from soil in which they grow. Question (8) Boojho wants to know how these organisms acquire nutrients. They do not have mouths like animals do. They are not like green plants as they lack chlorophyll and cannot make food by photosynthesis. WATER POLLUTION: QUESTIONS BASED ON TRUE-FALSE Question: 10. Bathing of cattle, people and washing of utensils in the rivers and ponds must be prevented to prevent water pollution. Answer: True. Question: 11. Water is natural home for many plants and animals. Answer: True. Question: 12. If animals eat infected plants, they may also infected and fallen sick. 12-CHEMISTRY:SOLUTIONS-SOLUBILITY OF A GAS IN A LIQUID It is clear from the above Henry’s Law equation that. (i) Solubility of a gas in liquid increases with increase in pressure and vice verse. That is solubility of gas in liquid decreases with decrease in pressure. (ii) The solubility of a gas in liquid decreases with increase in Henry’s Law constant (K H ), at a given pressure. NCERT EXEMPLAR SOLUTION:LONG ANSWER: ACID BASE & SALT-10TH NCERT Exemplar Solution:Long Answer. Question: 43. In the following schematic diagram for the preparation of hydrogen gas as shown in Figure 2.3, what would happen if following changes are made? (a) In place of zinc granules, same amount of zinc dust is taken in the test tube. (b) Instead of dilute sulphuric acid, dilute hydrochloric acidis taken.
TENTH MATH CHAPTER LIST-HINDI MEDIUMTRANSLATE THIS PAGE दशवीं गणित (Math Tenth:Hindi Medium) वास्तविक संख्याएँ. The Fundamental Theorem of Arithmetic. अंक गणित की आधारभूत प्रमेय (The Fundamental Theorem of Arithmetic) के अनुसार प्रत्येक भाज्य संख्या को अभाज्य संख्याओं REAL NUMBERS: NCERT EXERCISE 1.3 77 210. Solution: 77 210 = 11 × 7 30 × 7. = 11 30 = 11 2 × 5 × 3. We know that if denominator q of a rational number p q is in the form of 2n × 5m then rational number has terminating decimal expression otherwise rational number has non-terminating decimal expression. Now, since denominator of the given rational number is not in the form 12-CHEMISTRY:SOLUTIONS-SOLUBILITY OF A GAS IN A LIQUID It is clear from the above Henry’s Law equation that. (i) Solubility of a gas in liquid increases with increase in pressure and vice verse. That is solubility of gas in liquid decreases with decrease in pressure. (ii) The solubility of a gas in liquid decreases with increase in Henry’s Law constant (K H ), at a given pressure. 12-CHEMISTRY:ELECTROCHEMISTRY-INTRODUCTION TO ELECTROCHEMISTRY Introduction to Electrochemistry. Electrochemistry is a branch of Physical Chemistry that studies the relationship between chemical reaction and production of electricity. NCERT EXERCISE SOLUTION: PERIODIC CLASSIFICATION OF (a) State whether A is a metal or non-metal. Answer: A is a non metal.. Explanation: Since, given element A lies in group 17 th thus it is non metal because elements belong to group 17 th are non metals. (b) State whether C is more reactive or less rective than A. Answer: C is less reactive than A. Explanation: C is down in the group than A.By going down in a group number of shell increases. MOTION: NCERT IN TEXT SOLUTION9TH SCIENCE Answer: (i) When a body is moving along a straight line and velocity is changes with uniform rate in equal interval of time, the body is said in uniform acceleration. (ii) When a body is in motion along a straight path and its velocity changes at non-uniform rate the body is said to be non-uniform acceleration. NUTRITION IN PLANTS: EVIDENCE OF PHOTOSYNTHESIS7TH SCIENCE Evidence of Photosynthesis. In photosynthesis, plants prepare carbohydrate. Carbohydrate is ultimately converted into starch. The food prepared by plants stored in various parts of plants includingleaves.
PERIMETER AND AREA:SOLUTION OF TRY THESE NCERT EXERCISE 11 Solution of Try These NCERT Exercise 11.1. Important Formulas relating to Area and perimeter of rectangle and square. Area of Rectangle =Length × Breadth
WATER POLLUTION: LONG ANSWER TYPE QUESTIONS water-pollution NCERT Solution and CBSE Notes for class twelve, eleventh, tenth, ninth, seventh, sixth, fifth, fourth and General Math for competitive Exams WHAT IS SALT: ACID BASE & SALT-10TH SCIENCE What is Salt. Most common salt is common salt, i.e. sodium chloride (NaCl). Salt is produced in laboratory by the neutralization reaction of acid and base. Potassium sulphate, sodium sulphate, sodium nitrate, sodium carbonate, etc. are examples of some salts other than sodium chloride. A salt contains two types of ions, i.e. positive andnegative.
BIRDS AND BEAKS: BIRDS AND THEIR BODY Boat shaped Body. All birds have a boat-shaped body. Boat shaped body helps a bird while flying. Boat shaped body reduce the air pressure and reduce the drag of air while flying. Boat shaped body makes flying easy. Boat shaped body means body has similar shape to a boat. Boat can easily get rowed in river because of its special shape. MATTER IN OUR SURROUNDINGS: NCERT CHAPTER ACTIVITY Activity: 1.2. Take 2-3 crystals of potassium permanganate and dissolve them in 100 mL of water. Take out approximately 10 mL of this solution and put it into 90 mL of clear water. Take out 10 mL of this solution and put it into another 90 mL of clear water. Keep diluting the solution like this 5 to 8 times. FAQS-MCQS CLASS 10 CHEMICAL REACTIONS AND EQUATIONS-WHICH MCQs – Chemical Reactions and Equations class 10 science Try MCQ Test Review Question: Which product is formed when calcium oxidereacts with water?
NCERT ACTIVITY SOLUTION2: PERIODIC CLASSIFICATION OF Question:3. Similary find out the valency of first twenty elements. Answer: (1) Electronic configuration of Hydrogen (Atomic number: 1) = 1. Valence electrons of Hydrogen = 1. Thus, Valence of hydrogen = 1. (2) Electronic configuration of Helium (Atomic number: 2) = 2. Valence electrons of Helium (He) = 0. 12-CHEMISTRY:ELECTROCHEMISTRY-INTRODUCTION TO ELECTROCHEMISTRY Introduction to Electrochemistry. Electrochemistry is a branch of Physical Chemistry that studies the relationship between chemical reaction and production of electricity. NUTRITION IN PLANTS: QUESTIONS OF BOOJHO AND PAHELI7TH SCIENCE Thus, pitcher plants eat insects to fulfill the requirement of those nutrients which they not get from soil in which they grow. Question (8) Boojho wants to know how these organisms acquire nutrients. They do not have mouths like animals do. They are not like green plants as they lack chlorophyll and cannot make food by photosynthesis. WATER POLLUTION: QUESTIONS BASED ON TRUE-FALSE Question: 10. Bathing of cattle, people and washing of utensils in the rivers and ponds must be prevented to prevent water pollution. Answer: True. Question: 11. Water is natural home for many plants and animals. Answer: True. Question: 12. If animals eat infected plants, they may also infected and fallen sick. 12-CHEMISTRY:SOLUTIONS-SOLUBILITY OF A GAS IN A LIQUID It is clear from the above Henry’s Law equation that. (i) Solubility of a gas in liquid increases with increase in pressure and vice verse. That is solubility of gas in liquid decreases with decrease in pressure. (ii) The solubility of a gas in liquid decreases with increase in Henry’s Law constant (K H ), at a given pressure. MATTER IN OUR SURROUNDINGS: NCERT EXERCISE SOLUTION9TH SCIENCE Thus, 470 K = 197o C 197 o C. Question: 2. Convert the following temperatures to the Kelvin scale. (a) 25o C 25 o C. Solution: We know that, Temperature (K) = Temperature in Celsius + 273. Thus, 25o C 25 o C + 273 = 298 K. Thus, 25o C 25 o C = 298 K. NCERT EXEMPLAR SOLUTION:LONG ANSWER: ACID BASE & SALT-10TH NCERT Exemplar Solution:Long Answer. Question: 43. In the following schematic diagram for the preparation of hydrogen gas as shown in Figure 2.3, what would happen if following changes are made? (a) In place of zinc granules, same amount of zinc dust is taken in the test tube. (b) Instead of dilute sulphuric acid, dilute hydrochloric acidis taken.
TENTH MATH CHAPTER LIST-HINDI MEDIUMTRANSLATE THIS PAGE दशवीं गणित (Math Tenth:Hindi Medium) वास्तविक संख्याएँ. The Fundamental Theorem of Arithmetic. अंक गणित की आधारभूत प्रमेय (The Fundamental Theorem of Arithmetic) के अनुसार प्रत्येक भाज्य संख्या को अभाज्य संख्याओं MATTER IN OUR SURROUNDINGS: NCERT CHAPTER ACTIVITY Activity: 1.2. Take 2-3 crystals of potassium permanganate and dissolve them in 100 mL of water. Take out approximately 10 mL of this solution and put it into 90 mL of clear water. Take out 10 mL of this solution and put it into another 90 mL of clear water. Keep diluting the solution like this 5 to 8 times. FAQS-MCQS CLASS 10 CHEMICAL REACTIONS AND EQUATIONS-WHICH MCQs – Chemical Reactions and Equations class 10 science Try MCQ Test Review Question: Which product is formed when calcium oxidereacts with water?
NCERT ACTIVITY SOLUTION2: PERIODIC CLASSIFICATION OF Question:3. Similary find out the valency of first twenty elements. Answer: (1) Electronic configuration of Hydrogen (Atomic number: 1) = 1. Valence electrons of Hydrogen = 1. Thus, Valence of hydrogen = 1. (2) Electronic configuration of Helium (Atomic number: 2) = 2. Valence electrons of Helium (He) = 0. 12-CHEMISTRY:ELECTROCHEMISTRY-INTRODUCTION TO ELECTROCHEMISTRY Introduction to Electrochemistry. Electrochemistry is a branch of Physical Chemistry that studies the relationship between chemical reaction and production of electricity. NUTRITION IN PLANTS: QUESTIONS OF BOOJHO AND PAHELI7TH SCIENCE Thus, pitcher plants eat insects to fulfill the requirement of those nutrients which they not get from soil in which they grow. Question (8) Boojho wants to know how these organisms acquire nutrients. They do not have mouths like animals do. They are not like green plants as they lack chlorophyll and cannot make food by photosynthesis. WATER POLLUTION: QUESTIONS BASED ON TRUE-FALSE Question: 10. Bathing of cattle, people and washing of utensils in the rivers and ponds must be prevented to prevent water pollution. Answer: True. Question: 11. Water is natural home for many plants and animals. Answer: True. Question: 12. If animals eat infected plants, they may also infected and fallen sick. 12-CHEMISTRY:SOLUTIONS-SOLUBILITY OF A GAS IN A LIQUID It is clear from the above Henry’s Law equation that. (i) Solubility of a gas in liquid increases with increase in pressure and vice verse. That is solubility of gas in liquid decreases with decrease in pressure. (ii) The solubility of a gas in liquid decreases with increase in Henry’s Law constant (K H ), at a given pressure. MATTER IN OUR SURROUNDINGS: NCERT EXERCISE SOLUTION9TH SCIENCE Thus, 470 K = 197o C 197 o C. Question: 2. Convert the following temperatures to the Kelvin scale. (a) 25o C 25 o C. Solution: We know that, Temperature (K) = Temperature in Celsius + 273. Thus, 25o C 25 o C + 273 = 298 K. Thus, 25o C 25 o C = 298 K. NCERT EXEMPLAR SOLUTION:LONG ANSWER: ACID BASE & SALT-10TH NCERT Exemplar Solution:Long Answer. Question: 43. In the following schematic diagram for the preparation of hydrogen gas as shown in Figure 2.3, what would happen if following changes are made? (a) In place of zinc granules, same amount of zinc dust is taken in the test tube. (b) Instead of dilute sulphuric acid, dilute hydrochloric acidis taken.
TENTH MATH CHAPTER LIST-HINDI MEDIUMTRANSLATE THIS PAGE दशवीं गणित (Math Tenth:Hindi Medium) वास्तविक संख्याएँ. The Fundamental Theorem of Arithmetic. अंक गणित की आधारभूत प्रमेय (The Fundamental Theorem of Arithmetic) के अनुसार प्रत्येक भाज्य संख्या को अभाज्य संख्याओं REAL NUMBERS: NCERT EXERCISE 1.3 77 210. Solution: 77 210 = 11 × 7 30 × 7. = 11 30 = 11 2 × 5 × 3. We know that if denominator q of a rational number p q is in the form of 2n × 5m then rational number has terminating decimal expression otherwise rational number has non-terminating decimal expression. Now, since denominator of the given rational number is not in the form 12-CHEMISTRY:SOLUTIONS-SOLUBILITY OF A GAS IN A LIQUID It is clear from the above Henry’s Law equation that. (i) Solubility of a gas in liquid increases with increase in pressure and vice verse. That is solubility of gas in liquid decreases with decrease in pressure. (ii) The solubility of a gas in liquid decreases with increase in Henry’s Law constant (K H ), at a given pressure. 12-CHEMISTRY:ELECTROCHEMISTRY-INTRODUCTION TO ELECTROCHEMISTRY Introduction to Electrochemistry. Electrochemistry is a branch of Physical Chemistry that studies the relationship between chemical reaction and production of electricity. NCERT EXERCISE SOLUTION: PERIODIC CLASSIFICATION OF (a) State whether A is a metal or non-metal. Answer: A is a non metal.. Explanation: Since, given element A lies in group 17 th thus it is non metal because elements belong to group 17 th are non metals. (b) State whether C is more reactive or less rective than A. Answer: C is less reactive than A. Explanation: C is down in the group than A.By going down in a group number of shell increases. MOTION: NCERT IN TEXT SOLUTION9TH SCIENCE Answer: (i) When a body is moving along a straight line and velocity is changes with uniform rate in equal interval of time, the body is said in uniform acceleration. (ii) When a body is in motion along a straight path and its velocity changes at non-uniform rate the body is said to be non-uniform acceleration. MATTER IN OUR SURROUNDINGS: NCERT EXERCISE SOLUTION9TH SCIENCE Thus, 470 K = 197o C 197 o C. Question: 2. Convert the following temperatures to the Kelvin scale. (a) 25o C 25 o C. Solution: We know that, Temperature (K) = Temperature in Celsius + 273. Thus, 25o C 25 o C + 273 = 298 K. Thus, 25o C 25 o C = 298 K. NUTRITION IN PLANTS: EVIDENCE OF PHOTOSYNTHESIS7TH SCIENCE Evidence of Photosynthesis. In photosynthesis, plants prepare carbohydrate. Carbohydrate is ultimately converted into starch. The food prepared by plants stored in various parts of plants includingleaves.
WATER POLLUTION: LONG ANSWER TYPE QUESTIONS water-pollution NCERT Solution and CBSE Notes for class twelve, eleventh, tenth, ninth, seventh, sixth, fifth, fourth and General Math for competitive Exams WHAT IS SALT: ACID BASE & SALT-10TH SCIENCE What is Salt. Most common salt is common salt, i.e. sodium chloride (NaCl). Salt is produced in laboratory by the neutralization reaction of acid and base. Potassium sulphate, sodium sulphate, sodium nitrate, sodium carbonate, etc. are examples of some salts other than sodium chloride. A salt contains two types of ions, i.e. positive andnegative.
BIRDS AND BEAKS: BIRDS AND THEIR BODY Boat shaped Body. All birds have a boat-shaped body. Boat shaped body helps a bird while flying. Boat shaped body reduce the air pressure and reduce the drag of air while flying. Boat shaped body makes flying easy. Boat shaped body means body has similar shape to a boat. Boat can easily get rowed in river because of its special shape. MATTER IN OUR SURROUNDINGS: NCERT CHAPTER ACTIVITY NCERT Chapter Activity Solution. Activity: 1.1. Take a 100 mL beaker. Fill half the beaker with water and mark the level of water. Dissolve some salt/ sugar with the help of a glass rod. NCERT ACTIVITY SOLUTION2: PERIODIC CLASSIFICATION OF Activity: 5.6.. Question:1. How do you calculate the valency of an element from its electronic configuration? Answer: After writing electronic configuration, valence electrons of an element will be calculated.. And valency of an element = valence electrons of theelement.
FAQS-MCQS CLASS 10 CHEMICAL REACTIONS AND EQUATIONS-WHICH MCQs – Chemical Reactions and Equations class 10 science Try MCQ Test Review Question: Which product is formed when calcium oxidereacts with water?
12-CHEMISTRY:ELECTROCHEMISTRY-INTRODUCTION TO ELECTROCHEMISTRY Introduction to Electrochemistry. Electrochemistry is a branch of Physical Chemistry that studies the relationship between chemical reaction and production of electricity. NUTRITION IN PLANTS: QUESTIONS OF BOOJHO AND PAHELI7TH SCIENCE Questions of Boojho and Paheli. Question (1) Boojho wants to know how plants prepare their own food? Answer:. Plants prepare their food using the process of Photosynthesis. WATER POLLUTION: QUESTIONS BASED ON TRUE-FALSE water-pollution NCERT Solution and CBSE Notes for class twelve, eleventh, tenth, ninth, seventh, sixth, fifth, fourth and General Math for competitive Exams 12-CHEMISTRY:SOLUTIONS-SOLUBILITY OF A GAS IN A LIQUID Solubility of a Gas in a Liquid. Many gases dissolve in water. For example – Oxygen dissolve in water. It is the dissolved oxygen in water which sustains all aquatic life. NCERT EXEMPLAR SOLUTION:LONG ANSWER: ACID BASE & SALT-10TH acid base and salt ncert exemplar problems and solutions long answer type class ten science MATTER IN OUR SURROUNDINGS: NCERT EXERCISE SOLUTION9TH SCIENCE NCERT Exercise Solution. Question: 1. Convert the following temperatures to the Celsius scale. (a) 293 K. Solution : We know that, Temp (K) – 273 = Temp in degree celsius TENTH MATH CHAPTER LIST-HINDI MEDIUMTRANSLATE THIS PAGE दशवीं गणित (Math Tenth:Hindi Medium) वास्तविक संख्याएँ. The Fundamental Theorem of Arithmetic. अंक गणित की आधारभूत प्रमेय (The Fundamental Theorem of Arithmetic) के अनुसार प्रत्येक भाज्य संख्या को अभाज्य संख्याओं MATTER IN OUR SURROUNDINGS: NCERT CHAPTER ACTIVITY NCERT Chapter Activity Solution. Activity: 1.1. Take a 100 mL beaker. Fill half the beaker with water and mark the level of water. Dissolve some salt/ sugar with the help of a glass rod. NCERT ACTIVITY SOLUTION2: PERIODIC CLASSIFICATION OF Activity: 5.6.. Question:1. How do you calculate the valency of an element from its electronic configuration? Answer: After writing electronic configuration, valence electrons of an element will be calculated.. And valency of an element = valence electrons of theelement.
FAQS-MCQS CLASS 10 CHEMICAL REACTIONS AND EQUATIONS-WHICH MCQs – Chemical Reactions and Equations class 10 science Try MCQ Test Review Question: Which product is formed when calcium oxidereacts with water?
12-CHEMISTRY:ELECTROCHEMISTRY-INTRODUCTION TO ELECTROCHEMISTRY Introduction to Electrochemistry. Electrochemistry is a branch of Physical Chemistry that studies the relationship between chemical reaction and production of electricity. NUTRITION IN PLANTS: QUESTIONS OF BOOJHO AND PAHELI7TH SCIENCE Questions of Boojho and Paheli. Question (1) Boojho wants to know how plants prepare their own food? Answer:. Plants prepare their food using the process of Photosynthesis. WATER POLLUTION: QUESTIONS BASED ON TRUE-FALSE water-pollution NCERT Solution and CBSE Notes for class twelve, eleventh, tenth, ninth, seventh, sixth, fifth, fourth and General Math for competitive Exams 12-CHEMISTRY:SOLUTIONS-SOLUBILITY OF A GAS IN A LIQUID Solubility of a Gas in a Liquid. Many gases dissolve in water. For example – Oxygen dissolve in water. It is the dissolved oxygen in water which sustains all aquatic life. NCERT EXEMPLAR SOLUTION:LONG ANSWER: ACID BASE & SALT-10TH acid base and salt ncert exemplar problems and solutions long answer type class ten science MATTER IN OUR SURROUNDINGS: NCERT EXERCISE SOLUTION9TH SCIENCE NCERT Exercise Solution. Question: 1. Convert the following temperatures to the Celsius scale. (a) 293 K. Solution : We know that, Temp (K) – 273 = Temp in degree celsius TENTH MATH CHAPTER LIST-HINDI MEDIUMTRANSLATE THIS PAGE दशवीं गणित (Math Tenth:Hindi Medium) वास्तविक संख्याएँ. The Fundamental Theorem of Arithmetic. अंक गणित की आधारभूत प्रमेय (The Fundamental Theorem of Arithmetic) के अनुसार प्रत्येक भाज्य संख्या को अभाज्य संख्याओं 12-CHEMISTRY:ELECTROCHEMISTRY-INTRODUCTION TO ELECTROCHEMISTRY Introduction to Electrochemistry. Electrochemistry is a branch of Physical Chemistry that studies the relationship between chemical reaction and production of electricity. CLASS SIX SCIENCE CHAPTER LIST We eat many variety of food, such as rice, bread, pulses, meat, fish, etc. All these food items either come from plant or animals. Raw materials used to make food are called Ingredient of foods.There are many types of ingredients which are used to make food items. 12-CHEMISTRY:SOLUTIONS-SOLUBILITY OF A GAS IN A LIQUID Solubility of a Gas in a Liquid. Many gases dissolve in water. For example – Oxygen dissolve in water. It is the dissolved oxygen in water which sustains all aquatic life. NCERT ACTIVITY SOLUTION: PERIODIC CLASSIFICATION OF Activity: 5.1. Question:1 Looking at its resemblance to alkali metals and the halogen family, try to assign hydrogen a correct position in Mendeleev's Periodic Table. NCERT EXERCISE SOLUTION: PERIODIC CLASSIFICATION OF (a) State whether A is a metal or non-metal. Answer: A is a non metal.. Explanation: Since, given element A lies in group 17 th thus it is non metal because elements belong to group 17 th are non metals. (b) State whether C is more reactive or less rective than A. Answer: C is less reactive than A. Explanation: C is down in the group than A.By going down in a group number of shell increases. MOTION: NCERT IN TEXT SOLUTION9TH SCIENCE NCERT In Text Solution. Question: 1. An object has moved through a distance. Can it have zero displacement? If yes, support your answerwith example.
FOOD: WHERE DOES IT COME FROM: FOOD VARIETY:6 SCIENCE Food Variety. There are many types of food variety we eat. We eat rice, pulses, bread, vegetables, meat, fish, eggs, milk, curd, sweets, butter, and other many food. NUTRITION IN PLANTS: EVIDENCE OF PHOTOSYNTHESIS7TH SCIENCE Evidence of Photosynthesis. In photosynthesis, plants prepare carbohydrate. Carbohydrate is ultimately converted into starch. The food prepared by plants stored in various parts of plants includingleaves.
PERIMETER AND AREA:SOLUTION OF TRY THESE NCERT EXERCISE 11 Solution of Try These NCERT Exercise 11.1. Important Formulas relating to Area and perimeter of rectangle and square. Area of Rectangle =Length × Breadth
WHAT IS SALT: ACID BASE & SALT-10TH SCIENCE Most common salt is common salt, i.e. sodium chloride (NaCl). Salt is produced in laboratory by the neutralization reaction of acid and base. Potassium sulphate, sodium sulphate, sodium nitrate, sodium carbonate, etc. are examples of some salts other than sodium chloride. MATTER IN OUR SURROUNDINGS: NCERT CHAPTER ACTIVITY Activity: 1.2. Take 2-3 crystals of potassium permanganate and dissolve them in 100 mL of water. Take out approximately 10 mL of this solution and put it into 90 mL of clear water. Take out 10 mL of this solution and put it into another 90 mL of clear water. Keep diluting the solution like this 5 to 8 times. REAL NUMBERS: NCERT EXERCISE 1.3 77 210. Solution: 77 210 = 11 × 7 30 × 7. = 11 30 = 11 2 × 5 × 3. We know that if denominator q of a rational number p q is in the form of 2n × 5m then rational number has terminating decimal expression otherwise rational number has non-terminating decimal expression. Now, since denominator of the given rational number is not in the form NCERT ACTIVITY SOLUTION2: PERIODIC CLASSIFICATION OF Question:3. Similary find out the valency of first twenty elements. Answer: (1) Electronic configuration of Hydrogen (Atomic number: 1) = 1. Valence electrons of Hydrogen = 1. Thus, Valence of hydrogen = 1. (2) Electronic configuration of Helium (Atomic number: 2) = 2. Valence electrons of Helium (He) = 0. NCERT ACTIVITY SOLUTION: PERIODIC CLASSIFICATION OF Answer: Valence electron present in Hydrogen (H) = 1. Valence electron present in Lithium (Li) = 1. Valence electron present in Sodium (Na) = 1. Activity: 5.5. Question:1. If you look at the long form of the Periodic Table, you will find that the elements Li, Be, B, C, N, O F, and Ne are present in the second period. NUTRITION IN PLANTS: QUESTIONS OF BOOJHO AND PAHELI7TH SCIENCE Thus, pitcher plants eat insects to fulfill the requirement of those nutrients which they not get from soil in which they grow. Question (8) Boojho wants to know how these organisms acquire nutrients. They do not have mouths like animals do. They are not like green plants as they lack chlorophyll and cannot make food by photosynthesis. NUTRITION IN PLANTS: EVIDENCE OF PHOTOSYNTHESIS7TH SCIENCE Evidence of Photosynthesis. In photosynthesis, plants prepare carbohydrate. Carbohydrate is ultimately converted into starch. The food prepared by plants stored in various parts of plants includingleaves.
MOTION: NCERT IN TEXT SOLUTION9TH SCIENCE Answer: (i) When a body is moving along a straight line and velocity is changes with uniform rate in equal interval of time, the body is said in uniform acceleration. (ii) When a body is in motion along a straight path and its velocity changes at non-uniform rate the body is said to be non-uniform acceleration. 12-CHEMISTRY:SOLUTIONS-SOLUBILITY OF A GAS IN A LIQUID It is clear from the above Henry’s Law equation that. (i) Solubility of a gas in liquid increases with increase in pressure and vice verse. That is solubility of gas in liquid decreases with decrease in pressure. (ii) The solubility of a gas in liquid decreases with increase in Henry’s Law constant (K H ), at a given pressure. TENTH MATH CHAPTER LIST-HINDI MEDIUMTRANSLATE THIS PAGE दशवीं गणित (Math Tenth:Hindi Medium) वास्तविक संख्याएँ. The Fundamental Theorem of Arithmetic. अंक गणित की आधारभूत प्रमेय (The Fundamental Theorem of Arithmetic) के अनुसार प्रत्येक भाज्य संख्या को अभाज्य संख्याओं पादपों में पोषण:एनसीईआरटी अभ्यास प्रश्नों के …TRANSLATE THISPAGE
प्रश्न संख्या (4) हरे पादपों में खाद्य संश्लेषण प्रक्रम का संक्षिप्त विवरण दीजिए।. उत्तर. प्रकाश संश्लेषण के लिए सूर्य के प्रकाश MATTER IN OUR SURROUNDINGS: NCERT CHAPTER ACTIVITY Activity: 1.2. Take 2-3 crystals of potassium permanganate and dissolve them in 100 mL of water. Take out approximately 10 mL of this solution and put it into 90 mL of clear water. Take out 10 mL of this solution and put it into another 90 mL of clear water. Keep diluting the solution like this 5 to 8 times. REAL NUMBERS: NCERT EXERCISE 1.3 77 210. Solution: 77 210 = 11 × 7 30 × 7. = 11 30 = 11 2 × 5 × 3. We know that if denominator q of a rational number p q is in the form of 2n × 5m then rational number has terminating decimal expression otherwise rational number has non-terminating decimal expression. Now, since denominator of the given rational number is not in the form NCERT ACTIVITY SOLUTION2: PERIODIC CLASSIFICATION OF Question:3. Similary find out the valency of first twenty elements. Answer: (1) Electronic configuration of Hydrogen (Atomic number: 1) = 1. Valence electrons of Hydrogen = 1. Thus, Valence of hydrogen = 1. (2) Electronic configuration of Helium (Atomic number: 2) = 2. Valence electrons of Helium (He) = 0. NCERT ACTIVITY SOLUTION: PERIODIC CLASSIFICATION OF Answer: Valence electron present in Hydrogen (H) = 1. Valence electron present in Lithium (Li) = 1. Valence electron present in Sodium (Na) = 1. Activity: 5.5. Question:1. If you look at the long form of the Periodic Table, you will find that the elements Li, Be, B, C, N, O F, and Ne are present in the second period. NUTRITION IN PLANTS: QUESTIONS OF BOOJHO AND PAHELI7TH SCIENCE Thus, pitcher plants eat insects to fulfill the requirement of those nutrients which they not get from soil in which they grow. Question (8) Boojho wants to know how these organisms acquire nutrients. They do not have mouths like animals do. They are not like green plants as they lack chlorophyll and cannot make food by photosynthesis. NUTRITION IN PLANTS: EVIDENCE OF PHOTOSYNTHESIS7TH SCIENCE Evidence of Photosynthesis. In photosynthesis, plants prepare carbohydrate. Carbohydrate is ultimately converted into starch. The food prepared by plants stored in various parts of plants includingleaves.
MOTION: NCERT IN TEXT SOLUTION9TH SCIENCE Answer: (i) When a body is moving along a straight line and velocity is changes with uniform rate in equal interval of time, the body is said in uniform acceleration. (ii) When a body is in motion along a straight path and its velocity changes at non-uniform rate the body is said to be non-uniform acceleration. 12-CHEMISTRY:SOLUTIONS-SOLUBILITY OF A GAS IN A LIQUID It is clear from the above Henry’s Law equation that. (i) Solubility of a gas in liquid increases with increase in pressure and vice verse. That is solubility of gas in liquid decreases with decrease in pressure. (ii) The solubility of a gas in liquid decreases with increase in Henry’s Law constant (K H ), at a given pressure. TENTH MATH CHAPTER LIST-HINDI MEDIUMTRANSLATE THIS PAGE दशवीं गणित (Math Tenth:Hindi Medium) वास्तविक संख्याएँ. The Fundamental Theorem of Arithmetic. अंक गणित की आधारभूत प्रमेय (The Fundamental Theorem of Arithmetic) के अनुसार प्रत्येक भाज्य संख्या को अभाज्य संख्याओं पादपों में पोषण:एनसीईआरटी अभ्यास प्रश्नों के …TRANSLATE THISPAGE
प्रश्न संख्या (4) हरे पादपों में खाद्य संश्लेषण प्रक्रम का संक्षिप्त विवरण दीजिए।. उत्तर. प्रकाश संश्लेषण के लिए सूर्य के प्रकाश REAL NUMBERS: NCERT EXERCISE 1.3 77 210. Solution: 77 210 = 11 × 7 30 × 7. = 11 30 = 11 2 × 5 × 3. We know that if denominator q of a rational number p q is in the form of 2n × 5m then rational number has terminating decimal expression otherwise rational number has non-terminating decimal expression. Now, since denominator of the given rational number is not in the form 12-CHEMISTRY:SOLUTIONS-SOLUBILITY OF A GAS IN A LIQUID It is clear from the above Henry’s Law equation that. (i) Solubility of a gas in liquid increases with increase in pressure and vice verse. That is solubility of gas in liquid decreases with decrease in pressure. (ii) The solubility of a gas in liquid decreases with increase in Henry’s Law constant (K H ), at a given pressure. MOTION: NCERT IN TEXT SOLUTION9TH SCIENCE Answer: (i) When a body is moving along a straight line and velocity is changes with uniform rate in equal interval of time, the body is said in uniform acceleration. (ii) When a body is in motion along a straight path and its velocity changes at non-uniform rate the body is said to be non-uniform acceleration. REDOX REACTION: CHEMICAL REACTIONS AND EQUATIONS-10TH SCIENCE Oxidation Reduction Reaction in Everyday Life Corrosion. Gradual destruction of metals because of formation of respective oxide, hydroxide, or sulphide, etc. because of chemical reaction with substances present in environment is called corrosion. CHEMICAL PROPERTIES OF METALS: METALS & NON-METALS-10TH What happens when Metals are burnt in Air? When metals are burnt in air, respective metal oxides are formed. Metal + Oxygen → Metal Oxide. Most of the metals show this chemical property, i.e. they combine with oxygen and form respective metallic oxides. WATER POLLUTION: QUESTIONS BASED ON TRUE-FALSE Question: 10. Bathing of cattle, people and washing of utensils in the rivers and ponds must be prevented to prevent water pollution. Answer: True. Question: 11. Water is natural home for many plants and animals. Answer: True. Question: 12. If animals eat infected plants, they may also infected and fallen sick. LIGHT: REFLECTION & REFRACTION: NCERT EXERCISE A spherical mirror and a thin spherical lens have each a focal length of –15 cm. The mirror and the lens are likely to be. (a) Both concave. (b) Both convex. (c) the mirror is concave and the lens is convex. (d) the mirror is convex, but the lens is concave. Answer: (a) Both concave. Explanation: Distance of a concave mirror and concavelens
LIGHT: REFLECTION & REFRACTION: IN TEXT SOLUTION10TH SCIENCE Question: 8. Light enters from air to glass having refractive index 1.50. What is the speed of light in the glass? The speed of light in vacuum is 3 x 10 8 m s –1.. Answer: Given, Speed of light in vacuum (c) = 3 x 10 8 m s –1. Since, speed of light in air is almost similar to that of vacuum, LIGHT: REFLECTION & REFRACTION: REFRACTION OF LIGHT10TH Phenomenon of bending of ray of light towards normal while entering from rarer medium to denser medium and vice versa is called the Refraction of Light. वृत्तों से संबंधित क्षेत्रफल: एनसीईआरटी …TRANSLATETHIS PAGE
दशम गणित एनसीईआरटी तथा बिहार बोर्ड के प्रश्नावली का हल हिन्दी माध्यम वृत्तों से संबंधित क्षेत्रफल एनसीईआरटी अभ्यास 12.2 का हल भाग 2 त्रिज्यखंड वृत्तखंड MATTER IN OUR SURROUNDINGS: NCERT CHAPTER ACTIVITY Activity: 1.2. Take 2-3 crystals of potassium permanganate and dissolve them in 100 mL of water. Take out approximately 10 mL of this solution and put it into 90 mL of clear water. Take out 10 mL of this solution and put it into another 90 mL of clear water. Keep diluting the solution like this 5 to 8 times. CLASS SIX SCIENCE CHAPTER LIST It is plants which makes our earth green. Plants are very useful and beneficial to us. Plants give us food, wood, oxygen, and many other things. Plant help in maintaining our environment by absorbing carbon dioxide from the air and released oxygen into the air. If we start making the list of benefits of plants, the list will become endless. 12-CHEMISTRY:ELECTROCHEMISTRY-INTRODUCTION TO ELECTROCHEMISTRY Introduction to Electrochemistry. Electrochemistry is a branch of Physical Chemistry that studies the relationship between chemical reaction and production of electricity. NCERT ACTIVITY SOLUTION2: PERIODIC CLASSIFICATION OF Question:3. Similary find out the valency of first twenty elements. Answer: (1) Electronic configuration of Hydrogen (Atomic number: 1) = 1. Valence electrons of Hydrogen = 1. Thus, Valence of hydrogen = 1. (2) Electronic configuration of Helium (Atomic number: 2) = 2. Valence electrons of Helium (He) = 0. FAQS-MCQS CLASS 10 CHEMICAL REACTIONS AND EQUATIONS-WHICH MCQs – Chemical Reactions and Equations class 10 science Try MCQ Test Review Question: Which product is formed when calcium oxidereacts with water?
NCERT ACTIVITY SOLUTION: PERIODIC CLASSIFICATION OF Answer: Valence electron present in Hydrogen (H) = 1. Valence electron present in Lithium (Li) = 1. Valence electron present in Sodium (Na) = 1. Activity: 5.5. Question:1. If you look at the long form of the Periodic Table, you will find that the elements Li, Be, B, C, N, O F, and Ne are present in the second period. 12-CHEMISTRY:SOLUTIONS-SOLUBILITY OF A GAS IN A LIQUID It is clear from the above Henry’s Law equation that. (i) Solubility of a gas in liquid increases with increase in pressure and vice verse. That is solubility of gas in liquid decreases with decrease in pressure. (ii) The solubility of a gas in liquid decreases with increase in Henry’s Law constant (K H ), at a given pressure. NUTRITION IN PLANTS: QUESTIONS OF BOOJHO AND PAHELI7TH SCIENCE Thus, pitcher plants eat insects to fulfill the requirement of those nutrients which they not get from soil in which they grow. Question (8) Boojho wants to know how these organisms acquire nutrients. They do not have mouths like animals do. They are not like green plants as they lack chlorophyll and cannot make food by photosynthesis. WATER POLLUTION: QUESTIONS BASED ON TRUE-FALSE Question: 10. Bathing of cattle, people and washing of utensils in the rivers and ponds must be prevented to prevent water pollution. Answer: True. Question: 11. Water is natural home for many plants and animals. Answer: True. Question: 12. If animals eat infected plants, they may also infected and fallen sick. COMBUSTION AND FLAME: ACTIVITY SOLUTION8TH SCIENCE Activity 6.1. Collect some materials like straw, matchsticks, kerosene oil, paper, iron nails, stone pieces, glass etc. Under the supervision of your teacher try to burn each of these materials one by one. If combustion takes place mark the material combustible, otherwise mark it non-combustible (Table 6.1) MATTER IN OUR SURROUNDINGS: NCERT CHAPTER ACTIVITY Activity: 1.2. Take 2-3 crystals of potassium permanganate and dissolve them in 100 mL of water. Take out approximately 10 mL of this solution and put it into 90 mL of clear water. Take out 10 mL of this solution and put it into another 90 mL of clear water. Keep diluting the solution like this 5 to 8 times. CLASS SIX SCIENCE CHAPTER LIST It is plants which makes our earth green. Plants are very useful and beneficial to us. Plants give us food, wood, oxygen, and many other things. Plant help in maintaining our environment by absorbing carbon dioxide from the air and released oxygen into the air. If we start making the list of benefits of plants, the list will become endless. 12-CHEMISTRY:ELECTROCHEMISTRY-INTRODUCTION TO ELECTROCHEMISTRY Introduction to Electrochemistry. Electrochemistry is a branch of Physical Chemistry that studies the relationship between chemical reaction and production of electricity. NCERT ACTIVITY SOLUTION2: PERIODIC CLASSIFICATION OF Question:3. Similary find out the valency of first twenty elements. Answer: (1) Electronic configuration of Hydrogen (Atomic number: 1) = 1. Valence electrons of Hydrogen = 1. Thus, Valence of hydrogen = 1. (2) Electronic configuration of Helium (Atomic number: 2) = 2. Valence electrons of Helium (He) = 0. FAQS-MCQS CLASS 10 CHEMICAL REACTIONS AND EQUATIONS-WHICH MCQs – Chemical Reactions and Equations class 10 science Try MCQ Test Review Question: Which product is formed when calcium oxidereacts with water?
NCERT ACTIVITY SOLUTION: PERIODIC CLASSIFICATION OF Answer: Valence electron present in Hydrogen (H) = 1. Valence electron present in Lithium (Li) = 1. Valence electron present in Sodium (Na) = 1. Activity: 5.5. Question:1. If you look at the long form of the Periodic Table, you will find that the elements Li, Be, B, C, N, O F, and Ne are present in the second period. 12-CHEMISTRY:SOLUTIONS-SOLUBILITY OF A GAS IN A LIQUID It is clear from the above Henry’s Law equation that. (i) Solubility of a gas in liquid increases with increase in pressure and vice verse. That is solubility of gas in liquid decreases with decrease in pressure. (ii) The solubility of a gas in liquid decreases with increase in Henry’s Law constant (K H ), at a given pressure. NUTRITION IN PLANTS: QUESTIONS OF BOOJHO AND PAHELI7TH SCIENCE Thus, pitcher plants eat insects to fulfill the requirement of those nutrients which they not get from soil in which they grow. Question (8) Boojho wants to know how these organisms acquire nutrients. They do not have mouths like animals do. They are not like green plants as they lack chlorophyll and cannot make food by photosynthesis. WATER POLLUTION: QUESTIONS BASED ON TRUE-FALSE Question: 10. Bathing of cattle, people and washing of utensils in the rivers and ponds must be prevented to prevent water pollution. Answer: True. Question: 11. Water is natural home for many plants and animals. Answer: True. Question: 12. If animals eat infected plants, they may also infected and fallen sick. COMBUSTION AND FLAME: ACTIVITY SOLUTION8TH SCIENCE Activity 6.1. Collect some materials like straw, matchsticks, kerosene oil, paper, iron nails, stone pieces, glass etc. Under the supervision of your teacher try to burn each of these materials one by one. If combustion takes place mark the material combustible, otherwise mark it non-combustible (Table 6.1) CLASS SIX SCIENCE CHAPTER LIST It is plants which makes our earth green. Plants are very useful and beneficial to us. Plants give us food, wood, oxygen, and many other things. Plant help in maintaining our environment by absorbing carbon dioxide from the air and released oxygen into the air. If we start making the list of benefits of plants, the list will become endless. FAQS-MCQS CLASS 10 CHEMICAL REACTIONS AND EQUATIONS-WHICH MCQs – Chemical Reactions and Equations class 10 science Try MCQ Test Review Question: Which product is formed when calcium oxidereacts with water?
WATER POLLUTION: QUESTIONS BASED ON TRUE-FALSE Question: 10. Bathing of cattle, people and washing of utensils in the rivers and ponds must be prevented to prevent water pollution. Answer: True. Question: 11. Water is natural home for many plants and animals. Answer: True. Question: 12. If animals eat infected plants, they may also infected and fallen sick. NUTRITION IN PLANTS: EVIDENCE OF PHOTOSYNTHESIS7TH SCIENCE Evidence of Photosynthesis. In photosynthesis, plants prepare carbohydrate. Carbohydrate is ultimately converted into starch. The food prepared by plants stored in various parts of plants includingleaves.
MATTER IN OUR SURROUNDINGS: NCERT EXERCISE SOLUTION9TH SCIENCE Thus, 470 K = 197o C 197 o C. Question: 2. Convert the following temperatures to the Kelvin scale. (a) 25o C 25 o C. Solution: We know that, Temperature (K) = Temperature in Celsius + 273. Thus, 25o C 25 o C + 273 = 298 K. Thus, 25o C 25 o C = 298 K. COMBUSTION AND FLAME: ACTIVITY SOLUTION8TH SCIENCE Activity 6.1. Collect some materials like straw, matchsticks, kerosene oil, paper, iron nails, stone pieces, glass etc. Under the supervision of your teacher try to burn each of these materials one by one. If combustion takes place mark the material combustible, otherwise mark it non-combustible (Table 6.1) WATER POLLUTION: LONG ANSWER TYPE QUESTIONS water-pollution NCERT Solution and CBSE Notes for class twelve, eleventh, tenth, ninth, seventh, sixth, fifth, fourth and General Math for competitive Exams LIGHT: REFLECTION & REFRACTION: NCERT EXERCISE A spherical mirror and a thin spherical lens have each a focal length of –15 cm. The mirror and the lens are likely to be. (a) Both concave. (b) Both convex. (c) the mirror is concave and the lens is convex. (d) the mirror is convex, but the lens is concave. Answer: (a) Both concave. Explanation: Distance of a concave mirror and concavelens
BIRDS AND BEAKS: TRUE Birds use their beak to catch and hold food. Answer – True. Question: 7. Vulture have sticky beak. Answer – False. Question: 8. Swallow catches flies while flying. Answer – True. COMBUSTION AND FLAME: ANSWER OF QUESTIONS ASKED IN Answer Yes. The non luminous zone of a candle flame has highest temperature and it is called the outer zone of complete combustion. It is the hottest part of the flame. Question (4) Goldsmiths blow the outermost zone of a flame with a metallic blow pipe for melting goldand silver.
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