Subject

Chemistry

Class

NEET 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.

The atomic number of cerium (Ce) is 58. The correct electronic configuration of Ce3+ ion is.

  • [Xe] 4f1

  • [Kr] 4f1

  • [Xe] 4f13

  • [Kr] 4d1


A.

[Xe] 4f1

Atomic number of Cerium = 58

Electronic configuration of Ce = [Xe] 4f2 5d0 6s2

Electronic configuration of Ce3+ = [Xe] 4f1


Advertisement
2.

The number of lone pairs of electrons on the central atoms of H2O, SnCl2, PCl3 an XeF2 respectively are

  • 2, 1, 1, 3

  • 2, 2, 1, 3

  • 3, 1, 1, 2

  • 2, 1, 2, 3


3.

Consider the following salts : NaCl, HgCl2, Hg2Cl2, CuCl2, CuCl and AgCl. Identify the correct set of insoluble salts in water.

  • Hg2Cl2, CuCl, AgCl

  • Hg2Cl, CuCl, AgCl

  • Hg2Cl2, CuCl2, AgCl

  • Hg2Cl2, CuCl, NaCl


4.

At a certain temperature, the value of the slope of the plot of osmotic pressure (π) against concentration (C in molL-1) of a certain polymer solution is 291R. The temperature at which osmotic pressure is measured, is (R is gas constant) 

  • 271°C

  • 18°C

  • 564 K

  • 18 K


Advertisement
5.

The RMS velocity of CO gas molecules at 27°C is approximately 1000 m/s. For N2 molecules at 600 K, the RMS velocity is approximately

  • 2000 m/s

  • 1414 m/s

  • 1000 m/s

  • 1500 m/s


6.

A gas can be liquefied at temperature T and pressure p provided

  • T = Tc and p < pc

  • T < Tc and p > pc

  • T > Tc and p > pc

  • T > Tc and p < pc


7.

The dispersed phase and dispersion medium of fog respectively are

  • solid, liquid

  • liquid, liquid

  • liquid, gas

  • gas, liquid


8.

The decreasing order of basic character of K2O, BaO, CaO and MgO is

  • K2O > BaO > CaO > MgO

  • K2O > CaO > BaO > MgO

  • MgO > BaO > CaO > K2O

  • MgO > CaO > BaO > K2O


Advertisement
9.

Cold ferrous sulphate solution on absorption of NO develops brown colour due to the formation of

  • paramagnetic [Fe(H2O)5(NO)] SO4

  • diamagnetic [Fe(H2O)5(N3)] SO4

  • paramagnetic [Fe(H2O)5(NO3)][SO4]2

  • diamagnetic [Fe(H2O)4 (SO4)]NO3


10.

For the reaction,
2SO2 (g) + O2 (g) 2SO3 (g) at 300 K, the value of G° is -690.9 R. The equilibrium constant value for the reaction at that temperature is (R is gas constant)

  • 10 atm-1

  • 10 atm

  • 10

  • 1


Advertisement