Experimental Techniques in Chemistry MCQ's

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Here are MCQ's from Experimental Techniques in Chemistry chapter 2 book 1. Read questions carefully and answer them all.

1. Apex angle of filter paper is slightly greater than

A) 40
B) 50
C) 60
D) 90

2. Rime of funnel should extend the circuference of filter paper

A) 1-4 cm
B) 1-2 cm
C) 1-4 mm
D) 1-2 mm

3. For the preparation of saturated solution for crystallization

A) solute is added in minimum amount of solvent
B) solvent is added to the solute
C) both are possible
D) none

4. Nature of impurities present in a compound for crystallization is that

A) These are highly soluble in solvent
B) These are absolutely in the solvent
C) both
D) none

5. A pure compound obtained after sublimation is called

A) Sublime
B) Sublimand
C) Sublimate
D) none

6. 6. The nature of compound which are separated by solvent extraction is that they are

A) Thermally stable and volatile
B) Thermally unstable and volatile
C) thermally stable and non bolatile
D) thermally unstable and non bolatile

7. Chromatography is employed for

A) Qualitative analysis
B) Quantitative analysis
C) Both
D) none

8. Premature crystallization is prevented by

A) Cold finger apparatus
B) Vacuum desicator
C) Separating funnel
D) Hot water funnel

9. Component of a mixture with small value of K remains in

A) Stationary phase
B) Mobile phase
C) Distribute equally
D) all

10. Paper in paper chromatogrphy acts as

A) Stationary
B) Mobile phase
C) Support for stationary phase
D) support for mobile phase