Hydrocarbons

The correct IUPAC name of the following alkane is

(i) 3,6 – Diethyl – 2 – methyloctane

(ii) 5 – Isopropyl – 3 – ethyloctane

(iii) 3 – Ethyl – 5 – isopropyloctane

(iv) 3 – Isopropyl – 6 – ethyloctane

Arrange the following in decreasing order of their boiling points. 

(A) n–butane 

(B) 2–methylbutane 

(C) n-pentane 

(D) 2,2–dimethylpropane 

(i) A > B > C > D 

(ii) B > C > D > A 

(iii) D > C > B > A 

(iv) C > B > D > A

Arrange benzene, n-hexane and ethyene in decreasing order of acidic behaviour.

The increasing order of reduction of alkyl halides with zinc and dilute HCl is

(i) R–Cl < R–I < R–Br

ii) R–Cl < R–Br < R–I

(iii) R–I < R–Br < R–Cl

(iv) R–Br < R–I < R–Cl

Which of these will not react with acetylene? 

(a) NaOH  

(b) ammonical AgNO₃ 

(c) Na  

(d) HCl.