In solvent extraction ether is used to separate products of organic synthesis from________________?

A. Water
B. Iodine
C. Hydrochloric acid
D. Gases

In crystallization if the solvent is inflammable then direct heating is________________?

A. Needed
B. Avoided
C. Depends on temperature
D. Crystallization does not involve heating

Rate of filtration can be increased by applying gentle suction______________?

A. Gooch crucible
B. Filter paper
C. Sintered crucible
D. All of the above

Size of filter paper is selected according to the amount of__________________?

A. Solution
B. Amount of insoluble solute
C. Amount of soluble solute
D. Amount of solvent

Sintered crucible is made up of________________?

A. Plastic
B. Glass
C. Porcetain
D. Fiber

Separation of a solid from its hot saturated solution by cooling is called__________________?

A. Vapourization
B. Solvent extraction
C. Filtration
D. Crystallization

Which of the following technique is simple and efficient to purify a substance____________________?

A. Filtration
B. Sublimation
C. Crystallization
D. Solvent extraction

95% ethanol is called_________________?

A. Methylated spirit
B. Wood spirit
C. Rectified spirit
D. Absolute alcohol

Ratio of the amount of solute in organic and aqueous solvent is________________?

A. Retardation factor
B. Distribution co-efficient
C. Distribution in aqueous solution
D. All statements are wrong

Animal charcoal adsorbs the coloured_________________?

A. Impurities
B. Crystals
C. Solvents
D. Both a & b