Identification of the components of a sample is_________________?
A. Quantitative analysis
B. Qualitative analysis
C. Stoichiometry
D. Physical chemistry
Submitted by :- Jamil Ahmed
CHEMISTRY
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The technique used to separate components of mixture in solid phase ?
A. Crystallization
B. Filtration
C. Sublimation
D. Solvent extraction
Submitted by :- Jamil Ahmed
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
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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
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Rate of filtration can be increased by applying gentle suction______________?
A. Gooch crucible
B. Filter paper
C. Sintered crucible
D. All of the above
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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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In solvent extraction ether is used to separate products of organic synthesis from________________?
A. water
B. iodine
C. hydrochloric acid
D. gases
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The use of CaCl2 and PCl5 in the process of crystallization is as a____________________?
A. oxidizing agent
B. reducing agent
C. drying agent
D. coloring agent
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Without suction pump filtration is __________________?
A. Fast process
B. Slow process
C. Rapid process
D. All are possible
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Direct conversion of solids into vapours is called ___________________?
A. Solvent extraction
B. sublimation
C. crystallization
D. vaporization
Submitted by :- Jamil Ahmed