Which is the most suitable reagent among the following to distinguish compound (III) from rest of the compounds?                                                                                                 

I. CH₃-C$\equiv$C-CH₃

II. CH₃-CH₂-CH₂-CH₃

III. CH₃-CH₂-C$\equiv$CH

IV. CH₃-CH=CH₂

(a) Br₂/CCl₄                     (b) Br₂/CH₃COOH

(c)Alk.KMnO₄                   (d) Ammonical AgNO₃

Which of the following reagents will be able to distinguish between 1-butyne and 2-butyne?       

(a) NaNH₂            (b) HCl             (c) O₂                 (d) Br₂

A compound is treated with NaNH₂ to give sodium salt. Identify the compound.                      

(a) C₂H₂                  (b) C₆H₆

(c) C₂H₆                   (d) C₂H₄

When chlorine is passed through propene at 400$°$C, which of the following is formed?            

(a) PVC                         (b) Allyl chloride  

(c) Nickel chloride          (d) 1,2-dichloro ethane

When acetylene is passed through $\mathrm{dil}.{\mathrm{H}}_2{\mathrm{SO}}_4$ in presence of ${\mathrm{HgSO}}_4$, the compound formed is

(a) ether                           (b) ketone

(c) acetic acid                    (d) acetaldehyde

Benzene reacts with ${\mathrm{CH}}_3\mathrm{Cl}$ in the presence of anhy. ${\mathrm{AlCl}}_3$ to form

(a) toluene

(b) chlorobenzene

(c) benzylchloride

(d) xylene

In the following reaction,

2-bromopentane is heated with potassium ethoxide in ethanol. The major product obtained is 

(a) 2-ethoxypentane                    (b)pentene-1

(c) trans-pentene-2                     (d) cis -pentene-2

CH₃-C$\equiv$C-H$\stackrel{{\mathrm{CH}}_3\mathrm{MgBr}}{\to }$CH₄ + (A)$\underset{\left(\mathrm{ii}\right) {\mathrm{H}}_2\mathrm{O}/{\mathrm{H}}^{+}}{\overset{\left(\mathrm{i}\right) {\mathrm{CO}}_2}{\to }}$(B); (B) will be

(1) H₃C-CH₂-CH₂-COOH                                (2) CH₃-C$\equiv$C-CH₃

(3) H₃C-C$\equiv$C-COOH                                      (4) H₃C-CH=CH-COOH

The monochlorinated products (excluding stereo-isomers) obtained from the reaction is:

(1) 4            (2) 5              (3) 6            (4) 7