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Published on: 24/05/2021
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Download CBSE Class 12th Standard CBSE Chemistry question papers, sample papers, important questions, and previous year solved papers in PDF format. Get free study materials, NCERT solutions, and exam preparation resources for Class 12th Standard CBSE Chemistry
Questions + Answers key
Take MCQ Chemistry Test
1.
Which one of the following is correctly matched ?
Emulsion - smoke
Gel - butter
Aerosol - hair cream
Sol - whipped cream
Foam - mist
2.
The dispersed phase and dispersion medium of fog respectively are
solid, liquid
liquid, liquid
liquid, gas
gas, liquid
3.
The dispersed phase and dispersion medium in soap lather are respectively
gas and liquid
liquid and gas
solid and gas
solid and liquid
gas and solid
4.
The volume of a colloidal particle, Vc as compared to the volume of a solute particle in a true solution, Vs could be
\(\frac { { V }_{ c } }{ { V }_{ s } } =1\)
\(\frac { { V }_{ c } }{ { V }_{ s } } ={ 10 }^{ 23 }\)
\(\frac { { V }_{ c } }{ { V }_{ s } } ={ 10 }^{ -3 }\)
\(\frac { { V }_{ c } }{ { V }_{ s } } ={ 10 }^{ 3 }\)
5.
Given below, catalyst and corresponding process/reaction are matched. The mismatch is
[RhCI(PPh3)2] : hydrogenation
TiCI4+AI(C2H5)3 : polymerization
V2O5 : Haber - Bosch process
nickle : hydrogenation
1.
(b)
Gel - butter
2.
(c)
liquid, gas
3.
(a)
gas and liquid
4.
(d)
\(\frac { { V }_{ c } }{ { V }_{ s } } ={ 10 }^{ 3 }\)
5.
(b)
TiCI4+AI(C2H5)3 : polymerization
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