HEAT NUMERICAL QUIZ

The temperature of a body is 25°C. What is its value in Fahrenheit?

• 45°F

• 77°F

• 98.6°F

• 298°F

Convert 86°F into Celsius.

• 25°C

• 30°C

• 28°C

• 20°C

A temperature is measured to be 310 K. What is its equivalent in Celsius?

• 37°C

• 45°C

• 25°C

• 100°C

A temperature is 20°C. Select its equivalent values. (Multiple correct)

• 293 K

• 68°F

• 290 K

• 77°F

The temperature is 300 K. Which of the following represents the same temperature? (Multiple correct)

• 27°C

• 80.6°F

• 20°C

• 85°F

If a body requires 500 J of heat to raise its temperature by 10°C, what is its heat capacity?

• 50 J/°C

• 5 J/°C

• 500 J/°C

• 100 J/°C

A copper block requires 840 J to increase its temperature by 20°C. Find its heat capacity.

• 42 J/°C

• 60 J/°C

• 48 J/°C

• 40 J/°C

A 2 kg aluminum block is heated from 30°C to 50°C. If the specific heat of aluminum is 900 J/kg°C, how much heat is required?

• 18000 J

• 36000 J

• 45000 J

• 9000 J

How much heat is needed to raise the temperature of 500 g of water from 20°C to 70°C? (Specific heat of water = 4200 J/kg°C)

• 105000 J

• 84000 J

• 100000 J

• 95000 J

A 1.5 kg iron rod at 25°C is heated to 75°C. If specific heat of iron is 470 J/kg°C, find the heat absorbed.

• 35300 J

• 35250 J

• 35000 J

• 36000 J