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A piece of magnesium ribbon is heated to...

A piece of magnesium ribbon is heated to redness in an atmosphere of nitrogen and on cooling with water, the evolved gas is :

A

`N_(2)`

B

`NH_(3)`

C

`O_(2)`

D

`CO_(2)`

Text Solution

Verified by Experts

The correct Answer is:
B

`3Mg + 6N_(2) overset(Delta)rarr 2Mg_(3)N_(2)`
`Mg_(3)N_(2)+ 6HOH rarr 3Mg(OH)_(2)+ 2NH_(3)`
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ALLEN-S-BLOCK ELEMENTS -EXERCISE
  1. Which of the following does not give oxygen on heating?

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  2. When heated in steam, Mg burns brilliantly producing-

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  3. A piece of magnesium ribbon is heated to redness in an atmosphere of n...

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  4. The hydration energy of Mg^(2+) is larger than that of:

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  5. Molten sodium chloride conducts electricity due to the presence of:

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  6. Which of the following element have maximum tendency to form complex c...

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  7. The compound formed on heating sodium metal in a current of dry ammoni...

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  8. A body weighs 64 N on the surface of the Earth. What is the gravitatio...

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  9. The reactivity of IA elements is due to-

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  10. The metal not found in the native state is-

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  11. The property of Be resembles with-

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  12. In barium hydride, hydrogen is-

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  13. Haploids are more stuitable for mutation studies than the diploids. T...

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  14. Which of the following alkali metals has the biggest tendency of the h...

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  15. Which of the following forms the most basic hydroxide-

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  16. Complex forming tendency is more for-

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  17. Strongest reducing agent is

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  18. Both Be and Al become passive on reaction with conc. nitric acid due t...

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  19. Which of the following is an amphoteric oxide-

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  20. Which one of the following is most soluble in ether

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