In which of the following compounds, the chlorine atom is most ea

Previous Year Papers

Download Solved Question Papers Free for Offline Practice and view Solutions Online.

Test Series

Take Zigya Full and Sectional Test Series. Time it out for real assessment and get your results instantly.

Test Yourself

Practice and master your preparation for a specific topic or chapter. Check you scores at the end of the test.
Advertisement

 Multiple Choice QuestionsMultiple Choice Questions

111.

Assertion (A) : Cyclohexane is the most stable cycloalkane.

Reason (R) : Cyclopropane and cyclobutane are less stable due to angle starin and torsional strain.

The correct answer is-

  • Both (A) and (R) are true but (R) is not the correct explanation of (A).

  • (A) is true but (R) is not true.

  • (A) is not true but (R) is true.

  • Both (A) and (R) are true and (R) is the correct explanation of (A).


112.

Identify X and Y in the following reactions-


113.

This reaction is known as

  • Wurtz-Fittig reaction

  • Wurtz reaction

  • Fittig reaction

  • Friedel-Crafts reaction


114.

Which one of the following is more reactive towards SN2 reaction ?

  • (CH3)3CX

  • (CH3)2CHX

  • CH3CH2X

  • CH3X


Advertisement
115.

The reaction between an alkyl halide and sodium metal in dry ether is called

  • Clemmensen reduction

  • Kolbe's reaction

  • Wurtz 's reaction

  • Cannizaro's reaction


116.

DDT is related to

  • insecticide

  • fungicide

  • chlorination

  • florination


117.

Which one of the following notations shows product incorrectly?

  • Cm96242 (α, 2n) Bk97243

  • B510 (α, n) N713

  • N714 (n, p) C614

  • Si1428 (d, n) P1529


118.

Carbon-halogen bond is strongest among the following

  • CH3Cl

  • CH3Br

  • CH3F

  • CH3I


Advertisement
Advertisement

119.

In which of the following compounds, the chlorine atom is most easily substituted?

  • Chlorobenzene 

  • Vinyl chloride

  • Allyl chloride

  • p-chlorotoluene


C.

Allyl chloride

The chlorine atom is most easily substituted from allyl chloride because after the removal of chloride ion most stable allyl carbocation is obtained.

CH2=CH-CH2Cl -Cl- CH2=CH-C+H2(Moststable)

While in vinyl chloride and chloro benzene both C-Cl bond have partial double bond character due to resonance, hence they are more stable and does not undergo nucleophilic substitution reaction.


Advertisement
120.

Most stable ion is

  • C6H5CH2+

  • (CH3)3-C+

  • (CH3)2CH+

  • CH3CH2+


Advertisement