Chapter-2 - 11th - Experimental Techniques in Chemistry Preparation Multiple Questions and Answers.




36.Without suction pump filtration is
A. Fast process
B. Slow process
C. Rapid process
D. All are possible

37.Animal charcoal adsorbs the coloured
A. Impurities
B. Crystals
C. Solvents
D. Both a & b

38.Direct conversion of solids into vapours is called
A. Solvent extraction
B. Sublimation
C. Crystallization
D. Vaporization

39.Crystallization does not involve
A. Heating
B. Sublimation
C. Cooling
D. Vaporization

40.In CCI4 I2 shows
A. Red colour
B. Purple colour
C. Blue colour
D. Yellow colour

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