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
221.

The major product P will be


222.

The product P of the given reaction is 

 


223.

In the reaction 

C7H3Cl2/  X Br2/ Fe Y Zn/ HCl Z

Z is

  • o-bromotoluene

  • m-bromotoluene

  • p-bromotoluene

  • 3-bromo-2, 2, 6- trichlorotoluene


224.

The molal freezing point depression constant for benzene (C6H6) is 4.90 K Kg mol-1. Selenium exists as a polymer of the type Sex. When 3.26 g of selenium is dissolved in 226 g of benzene, the observed freezing point is 0.112°C lower than that of pure benzene. The molecular formula of selenium is (atomic mass of Se = 78.8 g mol-1).

  • Se8

  • Se6

  • Se4

  • Se2


Advertisement
225.

X, Y and Z respectively are


226.

Choose the correct alkyne and reagents for the preparation of

 


227.

For carbanion

Stability order will be

  • P > Q > S > R

  • P > R > Q > S

  • Q > R > S > R

  • S > R > Q > P


228.

Which one of the following acts as a nucleophile?

  • (CH3)3N

  • BF3

  • N+O2

  • CH3 - C+ = O


Advertisement
229.

Which of the following compounds have highest melting point?

  • Only I

  • Only II

  • I and II

  • II and III


230.

Identify the major product 'X' obtained in the following reaction.

2, 3-dimethyl butan-2-ol conc. H2SO4 X


Advertisement