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The conversion of atomic hydrogen into o...

The conversion of atomic hydrogen into ordinary hydrogen is

A

Exothermic change

B

Endothermic change

C

Nuclear change

D

Photochemical change

Text Solution

Verified by Experts

The correct Answer is:
B
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NARAYNA-HYDROGEN & ITS COMPOUCDS-C.U.Q HYDROGEN
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  2. The metal that cannot displace hydrogen from dil. HCl is

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  3. The conversion of atomic hydrogen into ordinary hydrogen is

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  4. Which of the following reactions requires high temperature and cataly...

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  5. CH-=CH+H(2)O overset(Hg^(+2))to CH(3)CHO The reation is known as

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  6. Which of the following is used as rocket fuel?

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  7. During hydrogenation of oils the catalyst commonly used is

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  8. Synthetic petrol is prepared by using a mixture.

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  9. Which of the following statements are correct regarding hydrogen? (i)...

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  10. The temperature of k is generated when atomic hydrogen is allowed to ...

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  11. Ionic hydrides are usually

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  12. Which of the following exists as polymeric chain in the solid state?

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  13. The hypothesis that all photosynthetic organic require a source of hyd...

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  14. Di-hydrogen reduces CuO to

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  15. Which of the following hydride have significant covalent character :

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  16. Which of the following statements are correct about ionic hydrides ? ...

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  17. Law of constant composition doesnot hold good for

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  18. Which of the following is not correct about the hydrides of alkali met...

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  19. How do you expect the metallic hydrides to be useful for hydrogen stor...

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  20. Percentage of water present in oceans

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