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A mixture of alumina and coke is heated ...

A mixture of alumina and coke is heated in a current of nitrogen to about `1800^(@)C` and the product obtained treated with water.A gas is evolved.The gas is :

A

`N_(2)`

B

`N_(2)O`

C

`NH_(3)`

D

`NO`

Text Solution

Verified by Experts

The correct Answer is:
C
`Al_(2)O_(3)+3C+N_(2)rightarrow 2AIN+3CO`(Serpeck's process)
`2AIN+3H_(2)O rightarrow Al (OH)_(3)+NH_(3)`
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RESONANCE ENGLISH-P BLOCK ELEMENTS-Exercise 2 part 2 OBJECTIVE
  1. The element which forms oxides in all oxidation states -1

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  2. Which of the following compounds does give N(2) on heating ?

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  3. A mixture of alumina and coke is heated in a current of nitrogen to ab...

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  4. The energy corresponding to second line of Balmer series for hydrogen ...

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  5. At 200^o C, hydrogen molecules have velocity 1.4 × 10^5cm s^(−1) . T...

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  6. When ammonia is oxidsed by oxygen in the presence of platinum at 800^(...

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  7. Substances burn more readily in N(2)O than in air because N(2)O:

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  8. The mixed anhydride of nitrous and nitric acid is.

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  9. Which of the following combines with Fe^(2+) ions to form brown comple...

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  10. Select the correct statement.

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  11. A gas is obtained on heating ammonium nitrate.The gas:

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  12. The gas obtained on heating lead nitrate to 400^(@) C :

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  13. A gaseous substance dissolve in water giving a pale blue solution whic...

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  14. White phosphorus may be removed from red phosphorus by :

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  15. Red phosphorus may be prepared from white phosphorus by :

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  16. Holme's signals produce burning gases which serve as a signal to the a...

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  17. Phosphorus trichloride, PCl(3) undergoes, hydrolysis at room temperatu...

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  18. Ortho phosphoric acid on heating above 300^(@)C gives :

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  19. 1 mol of H(3)PO(2), H(3)PO(3) and H(3)PO(4) will neutralise x mol NaOH...

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  20. At 200^o C, hydrogen molecules have velocity 3.4 × 10^4cm s^(−1) . T...

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