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Mayur Arya

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Mayur Arya

Asked: December 22, 2023In: Class 10 Science

Explain the reason for the following: (i) Aluminium oxide is called an amphoteric oxide. (ii) An iron strip dipped in a blue copper sulphate solution turns the blue solution pale green. (iii) Hydrogen gas is not evolved when most metals react with nitric acid. (iv) Calcium does not occur in free state in nature. (v) Sodium or potassium metals are kept immersed under kerosene.

CBSE NCERT Science Class 10 Sample Question Paper 2023-2024

Mayur Arya

Asked: December 22, 2023In: Class 10 Science

Metal X is found in nature as its sulphide XS. It is used in the galvanisation of iron articles. Identify the metal X. How will you convert this sulphide ore into the metal? Explain with equations.

CBSE Science Class 10 Sample Question Paper 2023-2024 free download with answers

Mayur Arya

Asked: December 19, 2023In: Class 10 Science

What do you observe when you drop a few drops of acetic acid to a test tube containing: a) Phenolphthalein b) Universal indicator c) distilled water d) sodium hydrogen carbonate

CBSE sample question paper 2023-24 class 10 science

Mayur Arya

Asked: December 19, 2023In: Class 10 Science

“Human beings occupy the top level in any food chain.” What are the consequences of this on our body?

New CBSE rationalised 2023-24 sample question paper class 10

Mayur Arya

Asked: December 19, 2023In: Class 10 Science

What do you understand by “Watershed Management”? List any two advantages of watershed management.

CBSE sample question paper class 10 science with answer key 2023-2024

Mayur Arya

Asked: December 19, 2023In: Class 10 Science

Improvements in our lifestyle have resulted in greater amounts of waste generation.” Give two examples to support the given statement. Suggest one change that we can incorporate in our lifestyle in order to reduce non-biodegradable waste.

CBSE science class 10 sample question paper 2023-2024

Mayur Arya

Asked: December 19, 2023In: Class 10 Science

What is reactivity series? How does the reactivity series of metals help in predicting the relative activities of various metals?

NCERT latest Class 10 Science sample question paper 2023-2024

Mayur Arya

Asked: December 16, 2023In: Class 10 Science

A student has to project a three times magnified image of a candle flame on a wall. Name the type of the lens (converging/ diverging) required for the purpose. It the candle flame is at a distance of 6 m from the wall, find the focal length of the lens.

CBSE class 10 science sample question paper pdf free download 2023-2024

Mayur Arya

Asked: December 16, 2023In: Class 10 Science

Different species use different strategies to determine sex of a new born individual. It can be environmental cues or genetically determined”. Justify this statement giving reason/example.

Latest CBSE science class 10 sample question paper with answer 2023-2024 pdf download

Mayur Arya

Asked: December 16, 2023In: Class 10 Science

List any four methods of contraception used by humans. How does the use of three methods have a direct effect on the heath and prosperity of a family?

NCERT CBSE class 10 science sample question paper with answer 2023-2024

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Mayur Arya

Metal X is found in nature as its sulphide XS. It is used in the galvanisation of iron articles. Identify the metal X. How will you convert this sulphide ore into the metal? Explain with equations.

What do you observe when you drop a few drops of acetic acid to a test tube containing: a) Phenolphthalein b) Universal indicator c) distilled water d) sodium hydrogen carbonate

“Human beings occupy the top level in any food chain.” What are the consequences of this on our body?

What do you understand by “Watershed Management”? List any two advantages of watershed management.

Improvements in our lifestyle have resulted in greater amounts of waste generation.” Give two examples to support the given statement. Suggest one change that we can incorporate in our lifestyle in order to reduce non-biodegradable waste.

What is reactivity series? How does the reactivity series of metals help in predicting the relative activities of various metals?

A student has to project a three times magnified image of a candle flame on a wall. Name the type of the lens (converging/ diverging) required for the purpose. It the candle flame is at a distance of 6 m from the wall, find the focal length of the lens.

Different species use different strategies to determine sex of a new born individual. It can be environmental cues or genetically determined”. Justify this statement giving reason/example.

List any four methods of contraception used by humans. How does the use of three methods have a direct effect on the heath and prosperity of a family?

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