Introduction to Haloalkanes

Q.

Why $CC{l}_4$ is used in Halogenation?

Q.

The reactivities of methyl chloride, propyl chloride and chlorobenzene are in

the order

[KCET 1988]

Q. Draw all the possible isomers of C3H6O and also give their IUPAC name.

Q. Consider (1) Zn(OH)2 (2) Cr(OH)3 (3) Mg(OH)2 (4) Al(OH)3 which hydroxide is precipitated by NH4OH containing NH4Cl- (a) 1, 2 (b) 2, 4 (c) Only 4 (4) 1, 2, 3&4

Q. 63 Which of the following group show +m effect? a)-CN b)-O-No c) -NH-coo-ch3 d)-CHO

Q.
The number of $E_1$ product(s) formed by the above reaction is .

Q.

$3CHCH\stackrel{Cu,{500}^{\circ }C}{\to }A;A+3H_2\stackrel{Ni}{\to }B$ Identify correct statement

1. Both A and B are homo cyclic and B is non aromatic

2. Both A and B are carbo cyclic aromatic compounds

3. Both A and B are hetero cyclic aromatic compounds

4. Both A and B are homo cyclic and B is aromatic

Q.

$S_{N}1$ solvolysis of 4-bromopent-2-ene in ethanol gives:

1. 4-methoxypent-2-ene

2. The same product as obtained during $S_{N}1$ solovolysis of 5-bromopent-2-ene in ethanol

3. The reaction gives a mixture or products

4. The reaction proceeds via a resonance-stabilized carbocation

Q. The order of reactivity of the given haloalkanes towards nucleophile is

1. $RCl>RBr>RI$
2. $RBr>RI>RCl$
3. $RBr>RCl>RI$
4. $RI>RBr>RCl$