Question

Zinc and cold dil. $HNO_3$ reacts to produce

• A. NO
• B. $N{{O}_{2}}$
• C. $N{{H}_{4}}N{{O}_{3}}$
• D. $ZnN{{O}_{3}}$

Answer 1

Answer: (C)

$N{{H}_{4}}N{{O}_{3}}$

Answer 2

$CH _{3} OH$ and $C _{2} H _{5} OH$ can be differentiated by using $Na _{2} CO _{3}$ and $I_{2}, C_{2} H_{5} O H$ gives yellow precipitate of $C H I_{3}$ whereas $C H_{3} O H$ does not react with it.
$C _{2} H _{5} OH +4 I _{2}+ Na _{2} CO _{3} \rightarrow \underset{\overset{\text{lodoform}}{\text{(yellow ppt.)}}}{CHI_3}+5 NaI + HCOONa +3 CO _{2}+ H _{2} O$