While calculating vapor pressure of a liquid in manometer, the column of mercury facing the vapors of a liquid is _ due to pressure on surface of liquid in flask.
Correct answer: B. Depressed
- A. Compressed
- B. Depressed
- C. Rises
- D. Lowers
Explanation
This question, like many of the 2021 PMC practice tests, is a direct line from the Punjab textbook. Please refer to section 4.2.2: Measurement of Vapour Pressure in the grade 11 chemistry book.
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About Experimental Techniques in Chemistry
Separation methods are selected according to differences in solubility, particle size, volatility and sublimation behaviour. Filtration and crystallisation separate insoluble or dissolved solids, sublimation isolates suitable volatile solids, distillation separates liquids by boiling point, and solvent extraction transfers a substance between immiscible solvents.
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