Physics Quizzes

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Science → MCQs → Physics → Physics Quizzes from 11 to 15

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11. When vapors of a substance are cooled and changes into liquid, it is called
(A) conduction
(B) condensation
(C) convection
(D) evaporation

12. An instrument used to measure gas pressure is called
(A) ammeter
(B) barometer
(C) galvanometer
(D) manometer

13. If we add salt to the pure water, its boiling point will
(A) increase
(B) decrease
(C) remain same
(D) none of these

14. The boiling point of alcohol is
(A) 71 °C
(B) 75 °C
(C) 79 °C
(D) 83 °C

15. The presence of impurities __________ the freezing point of water.
(A) increases
(B) decreases
(C) accelerate
(D) do not have any effect on

ANSWERS: PHYSICS QUIZZES
11. (B) condensation
12. (D) manometer
13. (A) increase
14. (C) 79 °C
15. (B) decreases