Melting and Solidification Multiple Choice Questions with Answers PDF – Test 72

MCQ 356: The temperature of a pure substance only changes upon heating where there is:

1. state of change
2. no state of change
3. solid state
4. liquid state

MCQ 357: A girl accidently dropped a ring into a pool at night. She shone a powerful torch light to locate the ring. The refractive index of water is 1.33, what is the pool's depth?

1. 2 m
2. 2.6 m
3. 1.1 m
4. 1.9 m

MCQ 358: The motion repeated at regular intervals is called:

1. translatory motion
2. exclatory motion
3. periodic motion
4. circulatory motion

MCQ 359: The resultant force can be found by taking one direction as positive and the opposite as negative, and then adding up the forces to find the resultant force for:

1. parallel forces
2. non-parallel forces
3. negative forces
4. net force

MCQ 360: When a gas is heated and its temperature rises, causing the gas molecules to move at:

1. lower speed
2. constant slow speed
3. zero speed
4. higher speed