The correct structure of 3,3-dimethyl butyne is-
1. 
2. 
3. 
4. 

The IUPAC name of the compound, 

 $C{H}_3—C{H}_2—CH—CON{H}_2$
$|$
$C{H}_3$ is-

1. 2-Ethylbutanamide

2. 2-Methylbutanamide

3. 1-Amino-2-methylpropane

4. None of the above

 The compound is an example:

1. aromatic compound                 

2. heterocyclic compound

3. annulene                               

4. xanthates

Which of the following species exhibits paramagnetism?

The IUPAC name of the compound CH₃CONH(Br) is:

1. 1-Bromoacetamide

2. N-Bromoethanamide

3. Ethanoyl bromide

4. None of the above

The compound obtained by heating a mixture of primary amine and chloroform with ethanolic potassium hydroxide (KOH) is                                                                          

1. an alkyl isocyanide

2. an alkyl halide

3. an amide

4. an amide and nitro compound

Nitrobenzene on reaction with conc. HNO₃/H₂SO₄ at 80-100$°$C forms -

1. 1,2-Dinitrobenzene

2. 1,3-Dinitrobenzene

3. 1,4-Dinitrobenzene

4. 1,2,4-Trinitrobenzene

Ethyl chloride is converted into diethyl ether by -                                                  

 1. Wurtz reaction                           
 2. Grignard reaction
 3. Perkin's reaction                       
 4. Williamson's synthesis

Consider the following reaction,

Phenol$\stackrel{\mathrm{Zn}-\mathrm{dust}}{\to }$X$\underset{\mathrm{Anhy}.{\mathrm{AlCl}}_3}{\overset{{\mathrm{CH}}_3\mathrm{Cl}}{\to }}$Y$\stackrel{\mathrm{Alk}.{\mathrm{KMnO}}_4}{\to }$Z 

The product Z is                            

1. toluene

2. benzaldehyde

3. benzoic acid

4. benzene

In this reaction, CH₃CHO + HCN$\to$CH₃CH(OH)CN$\stackrel{\mathrm{H}.\mathrm{OH}}{\to }$CH₃CH(OH)COOH an asymmetric centre is generated. The acid obtained would be                                                                      

1. 50% D + 50% L-isomer

2. 20%D + 80% L-isomer

3. D-isomer

4. L-isomer