O Level

Chemistry MCQ Questions

O Level Chemistry MCQs - Chapter

Methods of purification Quiz Questions and Answers p. 7

Methods of purification quiz questions and answers PDF, methods of purification MCQ worksheets with answers key, O level chemistry worksheet 7 for online classes. Learn pure substances and mixtures MCQs, Methods of purification MCQ questions and answers for admission and merit scholarships test. Learn pure substances and mixtures, distillation: purification process, decanting and centrifuging, paper chromatography career test for ACT subject tests.

"In order to lower melting point of ice," Multiple Choice Questions (MCQ) on methods of purification with choices solar energy shall be waited for, hot water shall be poured, salt can be spread over the ice, and the ice shall be scrapped from the roads and doorways for best online ACT prep class. Practice pure substances and mixtures quiz questions for jobs' assessment test and online courses for colleges that offer online courses.

Methods of purification Questions and Answers

1.

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

2.

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

3.

After centrifugation when the sublimate settles, the clear liquid can be

allowed to rest
allowed to form crystals
decanted off
evaporated

4.

Pure stearic acid melts at exactly

78 °C
70 °C
below 70 °C
above 80 °C

5.

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

crystallization
centrifugation
filtration
chromatography