Direct conversion of solids into vapours is called ___________________?
A. Solvent extraction
B. sublimation
C. crystallization
D. vaporization
Chemistry Mcqs
In CCI4 I2 shows________________?
In CCI4 I2 shows________________?
A. Red colour
B. Purple colour
C. Blue colour
D. Yellow colour
Crystallization does not involve_______________?
Crystallization does not involve_______________?
A. heating
B. sublimation
C. cooling
D. vaporization
Animal charcoal adsorbs the coloured_________________?
Animal charcoal adsorbs the coloured_________________?
A. impurities
B. crystals
C. solvents
D. both A & B
Ratio of the amount of solute in organic and aqueous solvent is________________?
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
95% ethanol is called_________________?
95% ethanol is called_________________?
A. methylated spirit
B. wood spirit
C. rectified spirit
D. absolute alcohol
Which of the following technique is simple and efficient to purify a substance____________________?
Which of the following technique is simple and efficient to purify a substance____________________?
A. Filtration
B. Sublimation
C. Crystallization
D. Solvent extraction
Separation of a solid from its hot saturated solution by cooling is called__________________?
Separation of a solid from its hot saturated solution by cooling is called__________________?
A. vapourization
B. solvent extraction
C. filtration
D. crystallization
Sintered crucible is made up of________________?
Sintered crucible is made up of________________?
A. Plastic
B. glass
C. porcetain
D. fiber
Gooch Crucibles are made up of________________?
Gooch Crucibles are made up of________________?
A. plastic
B. fibre
C. porcelain
D. steel