Everyday Science MCQs

5120 MCQs  (Page 327 of 512)

Attempt Everyday Science MCQs Quiz
Separation of a solid from its hot saturated solution by cooling is called__________________?
A. Vapourization
B. Solvent extraction
C. Filtration
D. Crystallization
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Which of the following technique is simple and efficient to purify a substance____________________?
A. Filtration
B. Sublimation
C. Crystallization
D. Solvent extraction
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95% ethanol is called_________________?
A. Methylated spirit
B. Wood spirit
C. Rectified spirit
D. Absolute alcohol
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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
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Animal charcoal adsorbs the coloured_________________?
A. Impurities
B. Crystals
C. Solvents
D. Both a & b
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Crystallization does not involve_______________?
A. Heating
B. Sublimation
C. Cooling
D. Vaporization
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In CCI4 I2 shows________________?
A. Red colour
B. Purple colour
C. Blue colour
D. Yellow colour
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Fluted filter paper is used to__________________?
A. Filter hot solution
B. Avoid premature crystallization
C. Increase the rate of filtration
D. Decrease the area
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A substance having very high vapour pressure at its melting point on heating will show_______________?
A. Melting
B. Sublimation
C. Decomposition
D. Condensation
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A technique of partition chromatography in which the solvent is in a pool at the bottom of container_______________?
A. Adsorption chromatography
B. Ascending chromatography
C. Radial chromatography
D. Descending chromatography
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Word of the Day
26 Jul
Simultaneously
at the same time.
ایک ہی وقت میں، ایک ساتھ، بیک وقت

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