Advertisements
Advertisements
Question
Specific heat capacity of a substance X is 1900 Jkg-1°C-1 means ______.
Options
Substance X absorbs 1900 J for 1°C rise in temperature
1 kg of substance X absorbs 1900 J heat for 1°C rise in temperature
1 kg of substance X absorbs 1900 J heat to increase the temperature
1 kg of substance X absorbs 1900 J heat to cool down by 1°C
Advertisements
Solution
Specific heat capacity of a substance X is 1900 Jkg-1°C-1 means 1 kg of substance X absorbs 1900 J heat for 1°C rise in temperature.
Explanation:
According to the definition of specific heat capacity.
APPEARS IN
RELATED QUESTIONS
A geyser heats water flowing at the rate of 3.0 litres per minute from 27 °C to 77 °C. If the geyser operates on a gas burner, what is the rate of consumption of the fuel if its heat of combustion is 4.0 × 104 J/g?
How will climate changes affect the various animal species?
The specific heat capacity of a body depends on _____________ .
A substance is heated at a constant rate from a low temperature to a high temperature. A graph of temperature against time is shown in the figure. Which part or parts of the graph correspond(s) to the substance existing in two states?
Discuss how high specific heat capacity of water helps in formation of land and sea breeze.
The temperature of a lead piece of mass 400 g rises from 20°C to 50°C when 1560 J of heat is supplied to it. Calculate: Heat capacity of lead piece.
Answer the following question.
Why do we generally consider two specific heats of a gas?
50 g of copper is heated to increase its temperature by 10° C. If the same quantity of heat is given to 5 g water, the rise in its temperature is [Specific heat of copper = 420 joule-kg-1 °C-1 , specific heat of water = 4200 joule-kg-I °C-1]
An office room contains about 4000 moles of air. The change in the internal energy of this much air when it is cooled from 34° C to 19° C at a constant pressure of 1.0 atm is (Use `gamma_"air"` = 1.4 and Universal gas constant = 8.314 J / mol K) ____________.
J/Kg °C is the unit of specific heat capacity.
