IGCSE O Level Chemistry MCQs – Practice Test 7 (Chapter 9)

Methods of purification Quiz with Answers PDF Download – Test 7

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Methods of purification Exam Questions and Answers PDF Download: Test 7

MCQ 31: In order to lower melting point of ice,:

hot water shall be poured
solar energy shall be waited for
salt can be spread over the ice
the ice shall be scrapped from the roads and doorways

MCQ 32: In the fractionating column of fractional distillation, as we go higher in the column the:

temperature becomes lower
temperature becomes higher
minimum absorption is carried out
risks of sublimation exists

MCQ 33: After centrifugation when the sublimate settles, the clear liquid can be:

allowed to rest
allowed to form crystals
decanted off
evaporated

MCQ 34: Pure stearic acid melts at exactly:

78 °C
70 °C
below 70 °C
above 80 °C

MCQ 35: In order to separate colors, dyes and amino acids, the useful method will be:

crystallization
centrifugation
filtration
chromatography

Methods of purification Quiz App & e-Book – IGCSE O Level Chemistry Study Material

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Methods of purification MCQs

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