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Which of the following statements is tru...

Which of the following statements is true?

A

Total mass of the substance remains same in a chemical change.

B

A chemical change is permanent and irreversible.

C

A physical change is temporary and is generally reversible.

D

All of these.

Text Solution

Verified by Experts

The correct Answer is:
D
All statements are true regarding physical and chemical changes.
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MTG IIT JEE FOUNDATION-CHEMICAL REACTIONS AND EQUATIONS-EXERCISE (MULTIPLE CHOICE QUESTIONS) (LEVEL-1)
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  2. AgNO(3(aq))+NaCl((aq))toAgCl((s))+NaNO(3(aq)). Above reaction is

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  3. Which of the following statements is true?

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  4. Which metal is protected by layer of its own oxide ?

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  5. When dilute hydrochloric acid is added to zinc pieces taken in a test ...

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  6. An iron nail is dipped in the solution of copper sulphate for about 30...

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  7. In an endothermic reaction

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  8. Heating limestone produces

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  9. Ferrous sulphate on heating gives:

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  10. White silver chloride in sunlight turns to

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  11. Which of the following chemical equations is an unbalanced one?

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  12. Which of the following is not a chemical reaction?

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  13. The electrolytic decomposition of water gives H(2) and O(2) in the rat...

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  14. Copper on exposure to air reacts with moisture and CO(2) to develop a ...

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  15. In exothermic reaction, the reactants

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  16. A(2)O(3)+2BtoB(2)O(3)+2A is an example of

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  17. When washing soda is treated with hydrochloric acid, it gives off a co...

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  18. Barium chloride on reacting with ammonium sulphate forms barium sulpha...

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  19. One mole of metal (Y) was added to 1.0 dm^(3) of 2.0"mol"//dm^(3) hydr...

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  20. When copper turnings are added to silver nitrate solution, a blue colo...

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