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Select the correct option given below. ...

Select the correct option given below.
a) Chemical combination is always endothermic.
b) Chemical decomposition is always exothermic.

A

'a' and 'b' are correct.

B

'a' is correct and 'b' is incorrect.

C

'a' is incorrect and 'b' is correct.

D

both 'a' and 'b' are incorrect.

Text Solution

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The correct Answer is:
D
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VGS PUBLICATION-BRILLIANT-CHEMICAL REACTIONS AND EQUATIONS-OBJECTIVE TYPE QUESTIONS
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  2. Match it and select the correct option. {:("i) Copper","A) "Fe(2)O(3...

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  3. Select the correct option given below. a) Chemical combination is al...

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  4. The layer which gives shiny finish to the wall after whitewash

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  5. Product of a reaction is ………………………. rarr2Fe+Al(2)O(3), Choose the reac...

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  6. On heating lead nitrate brown fumes of …………………. Are liberated.

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  7. Heating of Pb(NO(3))(2) gives two gases 'X' and 'Y'. The colour of X a...

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  8. xH(2)+yO(2)rarr zH(2)O. The values of x, y, z are

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  9. Potato chips are spoiled in a chips packet, predict the reason

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  10. Iron grill was not rusted, predict the proper reason

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  11. A green coating is observed on a metal pipe. The pipe may be made with

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  12. Brown coloured metal powder is changed into black colour on heating. T...

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  13. An yellow coloured powder changed into gray colour on exposing in the ...

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  14. Gas in a cylinder was put off the burning stick with a pop sound. The ...

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  15. The balanced chemical equation, among the following, is ……………….

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  16. Which one is necessary to test for a hydrogen gas ?

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  17. Barium sulphate is formed when these are added in beaker

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  18. Which gas is produced when zinc granules react with Hydrochloric acid ...

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  19. Heating of which of the following compound gives acidic and basic oxid...

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  20. What do you notice when water added to quick lime?

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