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

Advertisement

291.

The end product in the sequence would be 

C3H7OH 170°H2SO4 A Br2 B KOHAlc. C

  • CH3-CCH

  • CH3-C(OH)=CH2

  • CH2=C=CH2

  • CH3-CH(OH)-CH2(OH)


A.

CH3-CCH

CH3CH2CH2OH 170°(dehydration)H2SO4 CH3CH=CH2propene (A) Br2  CH3-CH(Br)-CH2(Br)'B'1 , 2-dibromopropane  (Dehydrohalogenation)Alc. KOH  CH3CCHpropyne (B)


Advertisement
292.

Assertion: Ortho and para-nitrophenol can be separated by steam distillation.

Reason: Para-nitrophenol is steam volatile due to intramolecular hydrogen bonding.

  • If both assertion and reason are true and reason is the correct explanation of assertion.

  • If both assertion and reason are true but reason is not the correct explanation of assertion.

  • If assertion is true but reason is false.

  • If both assertion and reason are false.


293.

The function of anhydrous AlCl3 in the Friedel-Craft's reaction is to :

  • absorb water

  • absorb HCl

  • to produce electrophile

  • to produce nucleophile


294.

When two double bonds are present on adjacent carbon atoms , the diene is called as :

  • conjugated diene

  • cumulative diene

  • isolated diene

  • None of these


Advertisement
295.

Lindlar's catalyst/H2RCCR Na/NH3 A ,

A and B are geometrical isomers (RCH=CHR)

  • A is cis , B is trans

  • A is trans , B is cis

  • A and B both are cis

  • A and B both are trans


296.

The homologue of ethyne is :

  • C2H4

  • C3H6

  • C3H3

  • C3H4


297.

Which of the following is a chiral compound?

  • Hexane

  • n-Butane

  • Methane

  • 2,3,4-Trimethylhexane.


298.

Which of the following will show aromatic behaviour ?

  • None of these


Advertisement
299.

When trans-2-butene is reacted with Br2 then product formed is

  • Meso compounds

  • both (b) and (c)


300.

Assertion : Phenol is more reactive than benzene towards electrophilic substitution reaction.

Reason : In the case of phenol, the intermediate carbocation is more resonance stabilised.

  • If both assertion and reason are true and reason is the correct explanation of assertion.

  • If both assertion and reason are true but reason is not the correct explanation of assertion.

  • If assertion is true but reason is false.

  • If both assertion and reason are false.


Advertisement