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

21.

which of the following represents the composition of carnallite mineral?

  • K2O.Al2O3.6SiO2

  • KNO3

  • K2SO4.MgSO4.MgCl2.6H2O

  • KCl.MgCl2.6H2O


D.

KCl.MgCl2.6H2O

Composition of carnallite mineral is KCl.MgCl2.6H2O


Advertisement
22.

Which one of the following is s-butyl phenyl vinyl methane?


23.

The standard reduction potential Eo for half-reaction are:

Zn  Zn2+ + 2e- ; E° = + 0.76V

Fe  Fe2+ + 2e- ; E° = + 0.41 V

The EMF of the cell reaction

Fe2+ + Zn  Zn2+ + Fe is :

  • - 0.35 V

  • + 0.35 V

  • + 1.17 V

  • - 1.17 V


24.

Which one of the following is not true at room temperature and pressure?

  • P4O10 is white solid

  • SO2 is a colourless gas

  • SO3 is a colourless gas

  • NO2 is a brown gas


Advertisement
25.

An element belongs to group 15 and third period of the Periodic Table. Its electronic configuration will be:

  • 1s22s22p3

  • 1s22s22p4

  • 1s22s22p63s23p3

  • 1s22s22p63s23p2


26.

Which one of the following is paramagnetic?

  • N2

  • NO

  • CO

  • O3


27.

Platinum, palladium and iridium are called noble metals because:

  • Alfred Nobel discovered them

  • they are shining lustrous and pleasing to look at

  • they are found in native state

  • they are inert towards many common reagents


28.

Which of the following is used to prepare Cl2 gas at room temperature from concentrated HCl?

  • MnO2

  • H2S

  • KMnO4

  • Cr2O3


Advertisement
29.

NO2 is not obtained on heating:

  • AgNO3

  • KNO3

  • Cu(NO3)2

  • Pb(NO3)2


30.

A plot of ln K against 1/T (abscissa) is expected to be a straight line with an intercept on ordinate axis equal to:

  • S°2.303R

  • S°R

  • -S°R

  • R xSo


Advertisement