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




26.The rate of filtration can be increased by applying gentle suction
A. Gooch crucible
B. Filter paper
C. Sintered crucible
D. All of the above

27.Sintered crucible is made up of
A. Plastic
B. Glass
C. Porcelain
D. Fibre

28.The tip of funnel should touch the wall of the breaker in order to avoid
A. Inconsistent flow of filtration
B. splashing
C. premature crystallization
D. all of above

29.Separation of a solid from its hot saturated solution by cooling is called
A. Vapourization
B. Solvent extraction
C. Filtration
D. Crystallization

30.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

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