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arvind kumar

Asked: July 7, 2021In: Class 10 Science

A student is studying the properties of acetic acid. List two physical properties of acetic acid he observes. What happens when he adds a pinch of sodium hydrogen carbonate to this acid? Write any two observations.

CBSC Session 2022-23. Sample Papers of Class 10th, Science. NCERT Important Questions of Class 10th Science. NCERT Science Solutions of Class 10th. NCERT book extra Questions. CBSC Board and other State board.

arvind kumar

Asked: July 7, 2021In: Class 10 Science

While determining the focal length of a convex lens, you try to focus the image of a distant object, formed by the lens on the screen. The image formed on the screen, as compared to object, should be

CBSC Session 2022-23. Sample Papers of Class 10th, Science. NCERT Important Questions of Class 10th Science. NCERT Science Solutions of Class 10th. NCERT book extra Questions. CBSC Board and other State board.

arvind kumar

Asked: July 6, 2021In: Class 10 Science

A student puts a drop of a solution of caustic soda first on a blue litmus paper and then on a red litmus paper. He would observe that

CBSC Session 2022-23. Sample Papers of Class 10th, Science. NCERT Important Questions of Class 10th Science. NCERT Science Solutions of Class 10th. NCERT book extra Questions. CBSC Board and other State board.

arvind kumar

Asked: July 6, 2021In: Class 10 Science

Elements forming ionic compounds attain noble gas electronic configuration by either gaining or losing electrons from their valence shells. Explain giving reason why carbon cannot attains such a configuration in this manner to from its compounds. Name the type of bonds formed in ionic compounds and in the compound formed by carbon. also explain with reason why carbon compounds are generally poor conductors of electricity.

CBSC Session 2022-23. Sample Papers of Class 10th, Science. NCERT Important Questions of Class 10th Science. NCERT Science Solutions of Class 10th. NCERT book extra Questions. CBSC Board and other State board.

arvind kumar

Asked: July 6, 2021In: Class 10 Science

What is speciation? List four factors that could lead to speciation. Which of the cannot be a major factor in the speciation of a self- pollinating plant species? Explain briefly.

CBSC Session 2022-23. Sample Papers of Class 10th, Science. NCERT Important Questions of Class 10th Science. NCERT Science Solutions of Class 10th. NCERT book extra Questions. CBSC Board and other State board.

arvind kumar

Asked: July 6, 2021In: Class 10 Science

” Energy Flow in food chains is always unidirectional.” justify this statement. Explain how the pesticides enter a food chain and subsequently get into our body.

CBSC Session 2022-23. Sample Papers of Class 10th, Science. NCERT Important Questions of Class 10th Science. NCERT Science Solutions of Class 10th. NCERT book extra Questions. CBSC Board and other State board.

arvind kumar

Asked: July 6, 2021In: Class 10 Science

Describe any three methods of tracing evolutionary relationship among arganisms.

CBSC Session 2022-23. Sample Papers of Class 10th, Science. NCERT Important Questions of Class 10th Science. NCERT Science Solutions of Class 10th. NCERT book extra Questions. CBSC Board and other State board.

arvind kumar

Asked: July 6, 2021In: Class 10 Science

List Three advantages of vegetative propagation.

CBSC Session 2022-23. Sample Papers of Class 10th, Science. NCERT Important Questions of Class 10th Science. NCERT Science Solutions of Class 10th. NCERT book extra Questions. CBSC Board and other State board.

arvind kumar

Asked: July 6, 2021In: Class 10 Science

What is placenta? Explain its function in humans.

CBSC Session 2022-23. Sample Papers of Class 10th, Science. NCERT Important Questions of Class 10th Science. NCERT Science Solutions of Class 10th. NCERT book extra Questions. CBSC Board and other State board.

arvind kumar

Asked: July 6, 2021In: Class 10 Science

Four elements P,Q,R and S belong to the third period of the Modern Periodic Table and have respectively 1, 3, 5 and 7 electrons in their outermost shells. Write the electronic configurations of Q and R and determine their valencies. Write the molecular formula of the compound formed when P and S combine.

CBSC Session 2022-23. Sample Papers of Class 10th, Science. NCERT Important Questions of Class 10th Science. NCERT Science Solutions of Class 10th. NCERT book extra Questions. CBSC Board and other State board.

bhargav

A student is studying the properties of acetic acid. List two physical properties of acetic acid he observes. What happens when he adds a pinch of sodium hydrogen carbonate to this acid? Write any two observations.

While determining the focal length of a convex lens, you try to focus the image of a distant object, formed by the lens on the screen. The image formed on the screen, as compared to object, should be

A student puts a drop of a solution of caustic soda first on a blue litmus paper and then on a red litmus paper. He would observe that

What is speciation? List four factors that could lead to speciation. Which of the cannot be a major factor in the speciation of a self- pollinating plant species? Explain briefly.

” Energy Flow in food chains is always unidirectional.” justify this statement. Explain how the pesticides enter a food chain and subsequently get into our body.

Describe any three methods of tracing evolutionary relationship among arganisms.

List Three advantages of vegetative propagation.

What is placenta? Explain its function in humans.

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