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

31.

Certain crystals produce electric signals on application of perssure. This phenomenon is called :

  • pyroelectricity

  • ferroelectricity

  • piezoelectricity

  • ferrielectricity


C.

piezoelectricity

Certain crystals produce electric signals on application of pressure. This phenomenon is called piezoelectricity.


Advertisement
32.

The element 90Th232 belong to thorium series. Which of the following will act as the end product of the series?

  • 82Pb208

  • 82Bi209

  • 82Pb206

  • 82Pb207


33.

The half-life of a first order reaction having rate constant k =1.7 x10-5 s-1 is :

  • 12.1 h

  • 9.7 h

  • 11.3 h

  • 1.8 h


34.

Aspirin is :

  • antipyretic

  • tranquilizer

  • narcotic

  • anaesthetic


Advertisement
35.

In Williamson's synthesis, ethoxyethane is prepared by :

  • passing ethanol over heated alumina

  • heating sodium ethoxide with ethyl bromide

  • treating ethyl alcohol with excess of H2SO4 at 430-440 K

  • heating ethanol with dry Ag2O


36.

HCHO reacts with CH3MgI to give:

  • CH3CH2OH

  • CH3OH

  • CH3CH2I

  • CH3I


37.

reacts with acetic acid in presence of Hg2+ to give:

  • None of these


38.

Which among the following is strongest acid ?

  • H(ClO)O2

  • H(ClO)O3

  • H(ClO)O

  • H(ClO)


Advertisement
39.

Which of the following amino acid is optically inactive?

  • Phenyl alanine

  • Glycine

  • Glutamic acid

  • Asparagine


40.

Glucose has difference from fructose in that it:

  • does not undergo hydrolysis

  • gives silver mirror with Tollen's reagent

  • monosaccharide

  • none of the above


Advertisement