Directions : In the following question more than one of the answers given may be correct. Select the correct answer and mark it according to the code:
Nitrogen can combine directly at higher temperature to give nitrides with (1)\[Mg\] (2)\[Al\] (3)\[Zn\] (4)\[Pb\]A) 1, 2 and 3 are correct
B) 1 and 2 are correct
C) 2 and 4 are correct
D) 1 and 3 are correct
Correct Answer: B
Solution :
At higher temperature\[Mg\]and\[Al\]combine with nitrogen to form nitrides. \[3Mg+{{N}_{2}}\xrightarrow{\Delta }M{{g}_{3}}{{N}_{2}}\] \[2Al+{{N}_{2}}\xrightarrow{\Delta }2AlN\]
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