set 1 MCQ Questions & Answers Detailed Explanation

Question : 1

An ice cube is floating in a glass of water. What happens to the water level when the ice melts? It

a) Falls

b) Remains the same

c) Rises

d) First rises and then falls

Question : 2

Houses far from the municipal water tank find it difficult to get water on the top floor even if their ceilings are lower than the level of water filled in tank. Its reason is

a) pipes are less wide.

b) pipes are more wide.

c) when water flows there is loss of pressure.

d) None of these

Question : 3

Working of atomizer is based on

a) Bernoulli’s law

b) Boyle’s law

c) Newton’s laws of motion

d) Archimedes’ principle

Question : 4

A body floats in a liquid containing in a beaker. The whole system as shown in Fig. is falling under gravity. The upthrust on the body due to liquid is

a) equal to weight of body in air

b) zero

c) equal to weight of liquid displaced

d) equal to weight of immersed part of the body

Question : 5

Static science is associated with

a) Situation of rest

b) Mental situation

c) Dynamic situation

d) Data analyzing

Question : 6

A sudden fall in barometer reading indicates that the weather will be

a) Rainy weather

b) Cool dry weather

c) Stormy weather

d) Hot and humid weather