PPSC Test mcqs of physics SET 2

1. What will be the resultant color if we add all the colors of the rainbow?
(A) Red
(B) Dark Blue
(C) White
(D) Black

2. An instrument used to measure gas pressure is called:
(A) Thermometer
(B) Galvanometer
(C) Manometer
(D) Ammeter

3. If we add salt to pure water, its boiling point will:
(A) Remain same
(B) Increase
(C) Decrease
(D) All of the above

4. The boiling point of alcohol is:
(A) 79°C
(B) 65°C
(C) 80°C
(D) 70°C

5. Which color is formed when we combine red, green, and blue?
(A) Dark Blue
(B) Maroon
(C) Red
(D) White

6. The heating elements in electric kettles and irons are made up of:
(A) Fire-clay
(B) Nichrome
(C) Chromel
(D) Tungsten

7. Air temperature is lower at high altitude than at sea level. What happens to the boiling point of water?
(A) Higher
(B) Lower
(C) Absolute
(D) None of the above

8. What type of process is evaporation?
(A) Condensation
(B) Cooling
(C) Convection
(D) Liquefying

9. On which two processes does a refrigerator work?
(A) Radiation and evaporation
(B) Condensation and evaporation
(C) Convection and radiation
(D) Condensation and evaporation

10. The melting point of ice becomes lower if pressure:
(A) Doubles
(B) Consistency
(C) Decreases
(D) Increases