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1296

An empty 60 litre petrol tank has a mass of 10kg. Its mass when full of fuel of relative density 0.72 is

A. 7.2kg
B. 33.2kg
C. 43.2kg
D. 53.2kg

View Answer & Discuss (13) JAMB 1997

1297

The length of mercury thread when it is at 0°C, 100°C and at an unknown temperature \(\theta\) is 25mm, 225mm and 175mm respectively. The value of \(\theta\) is

A. 85.0^oC
B. 80.0^oC
C. 75.0^oC
D. 70.0^oC

View Answer & Discuss (6) JAMB 1997

1298

Equal masses of copper and rubber are raised to the same temperature. After sometimes, the copper was observed to be at a lower temperature because

A. the specific heat capacity of copper is lower than that of rubber
B. copper expands more than rubber
C. the specific heat capacity of rubber is lower than that of copper
D. rubber expands more than copper

View Answer & Discuss (19) JAMB 1997

1299

Before starting a journey, the tyre pressure of a car was 3 x 10⁵Nm^-2 at 27^oC. At the end of the journey, the pressure rose to 4 x 10⁵Nm^-2. Calculate the temperature of the tyre after the journey, assuming the volume is constant