11) Hydraulic brake works on which law
Ans) Pascal’s law
12) On which principle sprayer works?
Ans) On the Bernoulli’s principle
13) what happens to the liquid when the vapours pressure is equal to atmospheric pressure
Ans) It starts boiling
14)On hills, water boils at a lower temperature because
Ans) Air pressure is low at hills
15) A drop of oil on the water dilates, because
Ans) Surface tension of oil is much less than that of water
LEARN MOST IMPORTANT GENERAL SCIENCE MCQ’S
16) why drops of rain are round in shape
Ans) Because of surface tension
17) On which principle ball pen works
Ans) Surface tension
18) By which action oil soars above the lamp (General Science Objective Questions)
Ans) Capillarity
19) Why is lubricant is used in the vehicles
Ans) To reduce friction
20) Which is the solid lubricant
Ans) Graphite
