Chemistry MCQs

Page No. 88

Rate of filtration can be increased by applying gentle suction______________?


aGooch crucible

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bFilter paper

✓


cSintered crucible

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dAll of the above

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View Answer Filter paper

In crystallization if the solvent is inflammable then direct heating is________________?


aneeded

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bavoided

✓


cdepends on temperature

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dcrystallization does not involve heating

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View Answer avoided

In solvent extraction ether is used to separate products of organic synthesis from________________?


aWater

✓


biodine

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chydrochloric acid

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dgases

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View Answer Water

The use of CaCl2 and PCl5 in the process of crystallization is as a____________________?


aoxidizing agent

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breducing agent

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cdrying agent

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dcolouring agent

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View Answer drying agent

Without suction pump filtration is __________________?


aFastprocess

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bSlow process

✓


cRapid process

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dAll are possible

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View Answer Slow process

Direct conversion of solids into vapours is called ___________________?


aSolvent extraction

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bsublimation

✓


cCrystallization

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dvaporization

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View Answer sublimation

In CCI4 I2 shows________________?


aRed colour

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bPurple colour

✓


cBlue colour

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dYellow colour

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View Answer Purple colour

Crystallization does not involve_______________?


aheating

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bsublimation

✓


ccooling

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dvaporization

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View Answer sublimation

Animal charcoal adsorbs the coloured_________________?


aimpurities

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bcrystals

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csolvents

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dBoth A and B

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View Answer impurities

Ratio of the amount of solute in organic and aqueous solvent is________________?


aRetardation factor

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bDistribution co-efficient

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cDistribution in aqueous solution

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dAll statements are wrong

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