HEAT TEMPERATURE AND PRESSURE - Quiz

1) Calculate the amount of heat required to raise the temperature of 85.5 gm of sand from 20 Degree C to 35 Degree C specific heat of sand = 0.1.

128.25 Joules 125.28 Joules 128.26 Joules 126.28 Joules

2) What is the specific heat of the material if we require 510 calories to raise the temperature of 170 gm of material from 50 Degree C to 80 Degree C?

0.1 0.01 1.1 1.11

3) How much quantity of heat is required to raise the temperature of 300 grams of copper (sp.heat 0.092 cal/gram) from 25 Degree C to 75 Degree C in Kcal?

138 Kcal 1.38 Kcal 207 Kcal 2.07 Kcal

4) How much heat is absorbed by a copper ingot weighing 400 Kg is heated from 40 Degree C to 72 Degree C for the purpose of forging? (sp.heat of copper is 0.09)

1521 Kcal 1251 Kcal 1152 Kcal 1215 Kcal

5) What is called for the materials that restricts heat flow by radiation, conduction and convection?

Conductors Insulators Ferrous Non-ferrous