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IGCSE physics practice test MCQ: if car tires are hot, pressure of gas molecules in them would be with choices high, low, same as before heating and may be high or low for scholars to prepare for online study guide questions and answers to improve study skills. Free study guide is for online learning o level online exam test quiz test with MCQs to practice test questions with answers. O Level Online Exam Test Video

MCQ: If car tires are hot, pressure of gas molecules in them would be

1. high
2. low
3. same as before heating
4. may be high or low

A

MCQ: Volume of gas is

1. directly proportional to temperature
2. inversely proportional to temperature
3. directly proportional to friction
4. inversely proportional to heat

A

MCQ: If air at a pressure of 1 MPa is compressed such that new volume of air is one quarter of its initial volume, then new pressure of air is

1. 1 M Pa
2. 0.25 M Pa
3. 2 M Pa
4. 4 M Pa

D

MCQ: In an aquarium, air bubble at bottom has a volume = 0.5 mm³. What would be size of bubble at top if height of water level is = 1 m. (density of water = 1000 kg ⁄ m³, atmospheric pressure = 1 × 105 Pa, gravitational acceleration = 10 m s-1²)

1. 0.5 mm³
2. 0.55 mm³
3. 0.6 mm³
4. 0.65 mm³

B

MCQ: As volume is inversely proportional to pressure, we can conclude that

1. p1V2 = p2V1
2. p2/V2 = p1V1
3. p1V1 = p2V2
4. p1V1 = p2/V2

C