Post Utme Physics Past Questions and Answers

Question 351:

A blacksmith droped a 1.5 kg iron bead at3000C into some quantity of water. If the temperature of the water rose from 15oC to 180C, what is the mass of the water assuming no heat is lost to the surrounding? (Take the specific heat of iron as 0.46 J kg-1 C-1 and that of water as 4.2x103Jkg-1 C-1)

A. 15.44kg
B. 194.58 g
C. 15.44 g
D. 194.58 kg

Question 352:

Which of the following properties are not those of a suitable thermometric liquid?
I. It should be a good conductor of heat
II. It should be op aque
III Its expansion should be regular
IV. It should wet glass
V. It should have a high melting point and low boiling point

A. I and II
B. II and III
C. III and IV
D. IV and V

Question 353:

A gas at pressure P1 N/m2 and temperature 300C is heated to 61oC at constant volume. Find its new pressure.

A. 1.1 N/m2
B. 1.2 P1 N/m2
C. 1.01 P1 N/m2
D. 1.1 P1 N/m2.

Question 354:

A steel bar has a width of 10 cm at 500C At what temperature will it fit exactly into a hole of constant width 10.005 cm if coefficient of linear expansion of steel is 11x10-6 C-1)?

A. 750C
B. 0.0050C
C. 75.50C
D. -75.50C

Question 355:

The amount of heat that is required to raise the temperature of unit mass of a substance one degree

A. Heat capacity
B. Thermal capacity
C. Specific heat
D. Heat energy