UPSC  Chemistry

1. The couple between base units of DNA is through

Hydrogen bonding Electrostatic bonding Covalent bonding vander Waal’s forces
Comments

Share QNo: 1

2. Sublimation is a process in which a solid

Changes into another allotropic form Changes into liquid form Changes into vapour form None of the above
Comments

Share QNo: 2

3. methanol and acetone can be separated by

Fractional distillation Distillation Steam distillation Vacuum distillation
Comments

Share QNo: 3

4. aniline is separated from a mixture by

Fractional crystallization Fractional distillation Vacuum distillation Steam distillation
Comments

Share QNo: 4

5. glycerol is purified by

Steam distillation Vacuum distillation Fractional distillation Simple distillation
Comments

Share QNo: 5

6. Two immiscible liquids are separated by

Separating funnel Fractional distillation Chromatography Sublimation
Comments

Share QNo: 6

7. Latest technique for purification, isolation and separation of organic compounds is-

Chromatography Steam distillation Crystallisation Vacuum distillation
Comments

Share QNo: 7

8. Oils are purified by

Fractional distillation Steam distillation Vacuum distillation Simple distillation
Comments

Share QNo: 8

9. Chromatography technique is used for the separation of

Small sample of mixture Plant pigments Dye stuffs All
Comments

Share QNo: 9

10. A mixture of naphthalene and benzoic acid can be separated by

Chromatography Sublimation Fractional crystallization Distillation
Comments

Share QNo: 10

 

*Click on the QNo to display a Question.

Total Ans