Haloalkanes and halo arenes practice · Mixed difficulty

Which of the following is not inflammable?

For the carbylamine reaction we need hot alcoholic KOH and:

In the reaction:

$C{H_3} - \mathop {CH}\limits^{\mathop {\,\,\,C{H_3}}\limits_| } - C{H_2} - O - C{H_2} - C{H_3} + HI \to {\text{product}}\,{\text{is}}$

A reaction of benzo nitrile with one equivalent $C{H_3}MgBr$ followed by hydrolysis produces a yellow liquid $P.$
The compound $P$ will give positive

General formula for arenes is:

Assertion : 4-Nitrochlorobenzene undergoes nucleophilic substitution more readily than chlorobenzene.

Reason : Chlorobenzene undergoes nucleophilic substitution by elimination-addition mechanism while 4-nitrochlorobenzene undergoes nucleophilic substitution by addition-elimination mechanism.

Which of the following statements is correct for four isomeric bromobutanes?

Read the following statements and choose the correct code

(i) ${SN}^2$ reaction proceed with complete stereochemical inversion.

(ii) ${SN}^1$ reaction proceed with recimisation.

(iii) A dextrorotatory compound rotate the plane polarised light to the left.

(iv) A laevorotatory compound rotate the plane polarised light to the right

1-phenyl, 2-chloropropane on treatment with aqueous $\mathrm{KOH}$ gives mainly:

At higher temperature, iodoform reaction is given by:

Although chlorobenzene does not give Ulmann’s reaction. However, presence of…group in chlorobenzene at $o - ,p -$position enables it to give Ulmann’s reaction.

Assertion : Exposure of ultraviolet rays to human causes the skin cancer, disorder and disrupt the immune system.

Reason : Carbon tetrachloride is released into air it rises to atmosphere and deplets the ozone layer.

2-chlorobutane obtained by chlorination of butane, will be:

$C{H_3} - CH - C{H_2} - C{H_3}\xrightarrow[{UV}]{{C{l_2}}}A\,\left( {\mathrm{major}} \right),\,A$ is

Which of the following undergoes nucleophilic substitution exclusively ${\mathrm{S}_\mathrm{N}}1$ mechanism?

What mass of isobutylene is obtained from 37 g of tertiary butyl alcohol by heating with 20% ${\mathrm{H}_2}\mathrm{S}{\mathrm{O}_4}$ at 363 K, if the yield is 65%?

In $S{N^1}$ reaction, the racemization takes place it is due to

Which can be hydrolysed most easily?

Statement I: $CC{l_2}{F_2}$ is called Freon 12

Statement II: Freon 12 is manufactured from tetra-chloromethane by Swarts reaction.

In the light of the above statements, choose the correct answer

Which one of the following possess highest m.pt. ?

20% aqueous solution of sodium chloride containing ethyl alcohol on electrolysis gives:

Iodoform is obtained when ethanol is heatd with

Best reagent for preparing a chloro alkane from an alcohol is

Which of the following compound shows greater reactivity towards $S{N^1}$ reaction

Which of the following statements is/are true for geminal halide?

Among the following, the most reactive towards alcoholic ${KOH}$ is :

Arrange decreasing order of reactivity of these compounds for nucleophilic substitution reaction.
$\left( {\text{I}} \right)\,\,\,C{H_3}C{H_2} - O - \begin{array}{cccccccccccccccccccc} O \\ {||} \\ S \\ {||} \\ O \end{array} - C{F_3}$
$\left( {{\text{II}}} \right)\,\,\,C{H_3} - C{H_2} - OTs$
$\left( {{\text{III}}} \right)\,\,\,C{H_3} - \mathop {CH}\limits_{\begin{array}{cccccccccccccccccccc} | \\ {OH} \end{array}} - C{H_3}$
$\left( {{\text{IV}}} \right)\,\,\,C{H_3} - \mathop {CH}\limits_{\begin{array}{cccccccccccccccccccc} | \\ {{C_6}{H_5}} \end{array}} - OH$

Which one of the following pairs is the strongest pesticide?

Which of the following is not correct?

Arrange the following carbonyl compounds in increasing order of their reactivity in nucleophilic addition reaction

i) Benaldehyde $\quad$ ii) P-Tolualdehyde
iii) P-Nitro benzaldehyde $\quad$ iv) Acetophenone