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Chemistry MCQs

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Chemistry MCQs by CSS 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

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

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Correct Answer: D. boiling point of non-polar substances tends to decrease with increasing molecular weight
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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

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Correct Answer: C. increasing kinetic energy of molecules
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