The oxidation of benzene by V₂O₅ in the presence of air produces

1. benzoic anhydride             2. maleic anhydride

3. benzoic acid                      4. benzaldehyde

$\left(\mathrm{A}\right)\stackrel{Na/N{H}_3\left(l\right)}{\to }\left(B\right)\stackrel{MCBPA}{\to }\left(C\right)$

Compound (C) in above sequence of reaction is:

1.    2. 

3.   4. 

 Product; Product is:

MCPBA $\to$Metachloroperbenzoic acid

1. 

2. 

3. 

4. 

$\underset{2. {\mathrm{NaHSO}}_3}{\overset{1. {\mathrm{OsO}}_4}{\to }}$ Product of the reaction is :

1.    

2. 

3.      

4. 

The end product 'W' in the follownign sequence of reactions is :

1.
2.
3.	$\mathrm{Ph}-{\mathrm{CH}}_2-\mathrm{O}-{\mathrm{CH}}_2-{\mathrm{CH}}_2-\mathrm{Ph}$
4.

In the following series of reactions the major products P and S are respectively.

$\stackrel{{\mathrm{Br}}_2/\mathrm{hv}}{\to }\left(P\right)\stackrel{tBu{O}^{⊝}}{\to }\left(Q\right)\underset{\underset{}{\left(ii\right)Th{O}_2,∆/\left(iii\right)alc.KOH}}{\overset{\left(i\right)HOBr/H^{+}}{\to }}\left(R\right)\underset{\underset{}{\left(ii\right)Th{O}_2,∆/\left(iii\right)alc.KOH\mathit{,}\mathit{∆}}}{\overset{\left(i\right)HOBr/H^{+}}{\to }}\left(S\right)$

1. 

2. 

3. 

4. 

Which of the following is a correct statement regarding the relative acidic character of cyclopropane and propane?

1. Cyclopropane is more acidic than propane

2. Propane is more acidic than cyclopropane

3. Both are equally acidic

4. Both are neutral

An unsaturated hydrocarbon on complete hydrogenation gives 1-isopropyl-3 methylcyclohexane, after ozonolysis it gives one mole of formaldehyde, one mole of acetone and one mole of 2,4-Dioxohexanedial. The possible structure of the hydrocarbon may be:

1.		2.
3.		4.

$\stackrel{\mathrm{NBS}}{\to }$ Products formed are

(A)                 (B) 

(C)                        (D) 

1. (A) and (B) only                        2. (A) and (C) only 

3. (B) and (C) only                        4. (A), (B), (C) and (D)  

When propane is reacted with conc. ${\mathrm{HNO}}_3$ at $400-500°\mathrm{C}$ the number of nitro alkanes obtained are 

1. 1                              2. 2

3. 3                              4. 4