What is the process of converting a substance from a gas to a liquid?
A. Evaporation
B. Boiling
C. Condensation
D. Melting
Correct Answer:
C. Condensation
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C. Condensation
Chemistry MCQs
Chemistry MCQs by CSSMCQs
Here, you will find all Chemistry MCQs with their Answers. These MCQs would help you achieve good marks in ALL kinds of entry tests of FPSC, PPSC, KPPSC, SPSC, NTS, PTS, OTS, CTS, MDCAT, ECAT, ETEA, NUMS and all other entry tests preparation etc. They will also help you get better marks in any types of job or university admission tests. Our focus will be on the fundamental level of the Chemistry course. However, advance level and its main branches MCQs will also be shared with their correct answers. For other subject’s MCQs Click HERE
What is sublimation in chemistry?
A. The transformation of a solid directly into a gas
B. The transformation of a gas directly into a solid
C. The transformation of a liquid directly into a gas
D. The transformation of a liquid directly into a solid
Correct Answer: A. The transformation of a solid directly into a gas
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Hydrogen bond is unimportant in
A. DNA structure
B. The liquid properties of water
C. Liquid HF
D. Liquid CH4
Correct Answer: D. Liquid CH4
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All of the following acids have hydrogen bond in liquid state except
A. sulfuric acid
B. nitric acid
C. hydrofluoric acid
D. hydrochloric acid
Correct Answer: D. hydrochloric acid
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Which of the following statements is incorrect?
A. dispersion force is the weakest type of intermolecular interactions
B. the strong intermolecular attractions in H2O result from hydrogen bonding
C. boiling point of H2S is less than H2O
D. boiling point of non-polar substances tends to decrease with increasing molecular weight
Correct Answer: D. boiling point of non-polar substances tends to decrease with increasing molecular weight
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Keeping in mind different factors which affect the boiling point of a substance, element having highest boiling among the following is
A. He
B. F2
C. Ne
D. Br2
Correct Answer: D. Br2
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The increasing vapor pressure caused by heating a liquid is due to
A. increase intermolecular interactions
B. increasing potential energy of molecules
C. increasing kinetic energy of molecules
D. decreasing surface tension
Correct Answer: C. increasing kinetic energy of molecules
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