A.
B. Solvent extraction
C. Fluorescence
D. Phosphorescence
142. Which one is used as stationary phase in
paper chromatography.?
A. Piece of
paper
B. Alcohol
C. Acetone
D. Water
143. The stationary phase can be.?
A. Only solid
B. Only
liquid
C. A solid or liquid
D. None of
above
144. The solvent is drawn up by the paper
because of.?
A. The force
of gravity
B. The water
content of the paper
C. The capillary action
D. All of
above
145. The process of removing a substance form
its aqueous solution (not often) by shaker with an organic solvent is termed as.?
A. Solvent extortion
B. Crystallization
C. Sublimate
in
D. Filtration
146. Which of the following is not a separation
technique.?
A. Sublimation
B. Boiling
C. Filtration
D. Solvent extortion
147. Which mixture can be speared by adding
water, stirring and filtering.?
A. Barium
chloride and sodium chloride
B. Copper
and magnesium
C. Silver chloride and sodium nitrate
D. None of
above
148. Slow cooking.?
A. Bigger size crystals
B. Animal charcoal
C. Vacuum dissector
D. None of
above
149. Safe and reliable method of drying.?
A. Gooch crucible
B. Using charcoal
C. Vacuum desecrator
D. None of above
150. Purple color of free iodine.?
A. Ether
B.
C. Sublimation
D. None of above
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