Haloalkanes and...

Which is the correct increasing order of boiling points of the following compounds?

1-Bromoethane, 1-Bromopropane, 1-Bromobutane, Bromobenzene

Which of the following are secondary bromides?

(i) \((CH_3)_2 CHBr \)

(ii) \((CH_3)_3C CH_2Br \)

(iii) \(CH_3CH(Br)CH_2CH_3 \)

(iv) \((CH_3)_2CBrCH_2CH_3\)

Which of the following compounds can be classified as aryl halides?

(i) \(p-ClC_6H_4CH_2CH(CH_3 )_2 \)

(ii) \(p-CH_3CHCl(C_6H_4 )CH_2CH_3 \)

(iii) \(o-BrH_2C-C_6H_4CH(CH_3 )CH_2CH_3 \)

(iv) \(C_6H_5 -Cl\)

Alkyl halides are prepared from alcohols by treating with

(i) \(HCl + ZnCl_2 \)

(ii) Red P + \(Br_2 \)

(iii) \(H_2 SO_4\) + KI

(iv) All the above

Alkyl fluorides are synthesised by heating an alkyl chloride/bromide in presence of _______ or _________.

(i) \(Ca F_2\)

(ii) \(CoF_2 \)

(iii) \(Hg_2F_2 \)

(iv) NaF

Assertion : It is difficult to replace chlorine by –OH in chlorobenzene in comparison to that in chloroethane.

Reason : Chlorine-carbon (C—Cl) bond in chlorobenzene has a partial double bond character due to resonance.

Assertion : Hydrolysis of (–)-2-bromooctane proceeds with inversion of configuration.

Reason : This reaction proceeds through the formation of a carbocation.

Assertion : Nitration of chlorobenzene leads to the formation of m-nitro chlorobenzene 

Reason : —\(NO_2\) group is a m-directing group.

Among the halogens, the one which is oxidized by nitric acid is