Temperature and Its Measurement - Jamb Physics Past Questions and Answers

Question 11:

• JAMB 1986

In an experiment in which molten naphthalene is allowed to cool, the cooling curve in fig 5 was obtained, the temperature \( 80^{\circ}C \) is known as

A. Cooling temperature
B. Boiling point
C. Melting point
D. Vaporization point

Question 12:

• JAMB 1987

Hot water is added to three times its mass of water at 10^oC and the resultant temperature is 20^oC. What is the initial temperature of the hot water?

A. 100^oC
B. 80^oC
C. 50^oC
D. 40^oC

Question 13:

• JAMB 1988

A tap supplies water at 25^oC while another supplies water at 75^oC. If a man wishes to bathe with water at 40^oC, the ratio of the mass of cold water to the mass of hot water required is

A. 1 : 3
B. 15 : 8
C. 7 : 3
D. 3 : 1

Question 14:

• JAMB 1989

A column of air 10.0cm long is trapped in a tube at 27^oC. What is the length of the volume at 100^oC?

A. 12.4cm
B. 13.7cm
C. 18.5cm
D. 37.0cm

Question 15:

• JAMB 1990

The resistances of platinum wire at the ice and steam points are 0.75 ohm and 1.05 ohm respectively. Determine the temperature at which the resistance of the wire is 0.90 ohm

A. 43.0^oC
B. 50.0^oC
C. 69.9^oC
D. 87.0^oC