Ethylbenzene is obtained from phenyl methyl ketone by using:

1. Zn–Hg+HCl

2. LiAlH₄

3. KMnO₄

4. None of the above

Acetaldehyde reacts with semicarbazide to yield the following as a product:

1.	\( {CH_3CH=NHNH_2} ~\)
2.	\({CH_3CH=NCONHNH_2}~~~\)
3.	\({CH_3CH=NNH-CO-NH_2}~~~~~\)
4.

Cyanohydrin of which of the following compounds on hydrolysis gives an optically active product:

1. HCHO

2. ${\mathrm{CH}}_3\mathrm{CHO}$

3. ${\mathrm{CH}}_3{\mathrm{COCH}}_3$

4. All of the above

Which one among the given options, can be oxidized to produce a carbonyl compound?

1. o-Nitrophenol

2. Aniline

3. 2-Methyl-2-hydroxypropane

4. 2-Hydroxy propane 

Clemmensen reduction reaction is:

1.
2.	\(C_6H_5-CO-CH_3 + NH_2NH_2 \xrightarrow{C_2H_5ONa}\\ C_6H_5CH_2CH_3\)
3.	\(CH_3COCH_3 + 4HI \xrightarrow{\text{Red. P}} CH_3CH_2CH_3\)
4.	All of the above

The product P is:

1.		2.
3.		4.

In the following reaction, product 'P' is:

1. RCH₂OH

2. RCOOH

3. RCHO

4. RCH₃

Product 'P' in the above reaction is: 

1.		2.
3.		4.

Intermediates formed during the reaction of ${\mathrm{RCNH}}_2$
$$ $$ $$ $\left|\right|$
$$ $$ $$ $\mathrm{O}$ with ${\mathrm{Br}}_2$ and KOH are:

1. RNHCOBr and RNCO

2. RCONHBr and RNCO

3. RNH-Br and RCONHBr 

4. RCON${\mathrm{Br}}_2$

\(CH_3CHO+HCN\rightarrow CH_3CH(OH)CN\\ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~\downarrow{\bf{H.OH}}\\ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~CH_3CH(OH)COOH~\)

1. 100 % R-isomer

2. 100% S-isomer

3. 50% R + 50% S-isomer

4. 20% R + 80% S-isomer