O Level Online Exam Test Multiple Choice Questions with Answers – PDF Download

MCQ 1: If the car tires are hot, the pressure of gas molecules in them would be:

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

MCQ 2: Volume of gas is:

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

MCQ 3: If air at a pressure of 1 MPa is compressed such that the new volume of the air is one quarter of its initial volume, then the new pressure of the air is:

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

MCQ 4: In an aquarium, air bubble at the bottom has a volume = 0.5 mm³. What would be the size of the bubble at the top if the height of the 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

MCQ 5: As the volume is inversely proportional to pressure, we can conclude that:

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