MCQ
Azo-dyes are prepared from
- AAniline
- BBenzaldehye
- CBenzoic acid
- ✓Phenol
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

| LIST $I$ (Technique) | LIST $II$ (Application) |
| $A$. Distillation | $I$. Separation of glycerol from spent-lye |
| $B$. Fractional distillation | $II$Aniline - Water mixture |
| $C$. Steam distillation | $III$Separation of crude oil fractions |
| $D$. Distillation under reduced pressure | $IV$.ChloroformAniline |
Choose the correct answer from the options given below:
$2 A ( g ) \rightarrow A _{2}( g )$
at $298\, K , \Delta U^ \ominus,=-20\, kJ\, mol ^{-1}, \Delta S \odot=-30\, J$$K ^{-1}\, mol ^{-1},$ then the $\Delta G ^{\ominus}$ will be........$J$