Subject

Chemistry

Class

JEE Class 12

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

41.

In chlorination benzene, the reactive species is

  • Cl+

  • Cl-

  • Cl2

  • Cl2-


42.

The number of moles of proton which can be easily given by butyne-1 (1 mole) is

  • 1

  • 2

  • 3

  • 6


Advertisement

43.

The addition of HBr is easiest with

  • CH2=CHCl

  • ClCH=CHCl

  • CH3-CH=CH2

  • (CH3)2C=CH2


D.

(CH3)2C=CH2

Group or atom attached with double bond bearing carbon, shows +I-effect, increases electron density on double bond bearing carbon and facilitate the attach of electrophile (hydrogen bromide) -CH3 group shows +I-effect, -Cl shows -I-effect.


Advertisement
44.

Formation of 2-butene as major product by dehydation of 2-butanol is according to

  • Markownikoff's rule

  • Saytzeff's rule

  • Peroxide effect

  • Anti-Markownikoffs rule


Advertisement
45.

Which of the ions having following electronic structure would have maximum magnetic moment?

  • 1s2, 2s2, 2p6,3s2,3p6,3d3

  • 1s2, 2s2, 2p6,3s2,3p6,3d5

  • 1s2, 2s2, 2p6,3s2,3p6,3d7

  • 1s2, 2s2, 2p6,3s2,3p6,3d9


46.

Chlorine atom differs from chloride in the number of which of the following?

  • Protons

  • Neutrons

  • Electrons

  • Both (a) and (c)


47.

Which of the following does not have the hydrogen bond?

  • Phenol

  • Liquid NH3

  • Water

  • Liquid HCl


48.

The vapour pressure ofa pure liquid 'A' is 0.80 atm. When a non-volatile solute 'B' is dissolved in 'A' its vapour pressure becomes 0.60 atm. The mole fraction of 'B' in the solution is

  • 0.125

  • 0.25

  • 0.50

  • 0.75


Advertisement
49.

Which of the following does not show negative deviation from Raoult's law?

  • Acetone -Chloroform

  • Acetone-Benzene

  • Chloroform- Ether

  • Chloroform- Benzene


50.

In CsCl structure, the coordination number of Cs+ is

  • equal to that of Cl, that is 6

  • equal to that of Cl, that is 8

  • not equal to that of Cl, that is 6

  • not equal to that of Cl, that is 8


Advertisement