JEE Chemistry Solved Question Paper 2012 | Previous Year Papers | Zigya

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

Advertisement
1.

Which one of the followmg has no unpaired electrons?

  • O2-

  • O2+

  • O22-

  • O2


2.

The "spin only'' magnetic moment of Ni2+ in aqueous solution would be [At. no. of Ni = 28]

  • 15 BM

  • 2 BM

  • 8 BM

  • 6 BM


3.

Impossible orbital among the following is

  • 3f

  • 2p

  • 4d

  • 2s


4.

The total number of electrons in 18 mL of water (density = 1 g mL-1) is

  • 6.02 × 1025

  • 6.02 × 1024

  • 6.02 ×  18 × 1023

  • 6.02 × 1023


Advertisement
5.

The number of moles of hydrogen that can be added to 1 mole of an oil is the highest in

  • groundnut oil

  • sunflower seed oil

  • mustard oil

  • linseed oil


6.

The equilibrium constant of a reaction is 0.008 at 298 K. The standard free energy change of the reaction at the same temperature is

  • -11.96 kJ

  • -5.43 kJ

  • -8.46 kJ

  • +11.96 kJ


7.

The correct order of electronegativities of N, O, F and P is

  • F > O > P > N

  • F > O > N > P

  • N > O > F > P

  • F > N > P > O


8.

Which of the following is not a characteristic of a covalent compound?

  • No definite geometry

  • Insoluble in polar solvent

  • Smal difference in electronegativity between the combining atoms

  • Low melting point


Advertisement
9.

The volume of 0.1 M oxalic acid that can be completely oxidized by 20 mL of 0.025 M KMnO4 solution is

  • 25 mL

  • 12.5 mL

  • 37.5 mL

  • 125 mL


10.

A ligand is a

  • Bronsted acid

  • either a Lewis acid or a Lewis base

  • Lewis base

  • Lewis acid


Advertisement