Question

if we take 59 g of water and supply 300 calories of heat to it then the rise in temperature is​

Answer 1

Explanation:

Question 1: What is heat? What is the S. I. unit of heat?

Answer: Heat is a form of energy, which when absorbed by a body makes it hot and when extracted from a makes it cold. It is also defined as the total kinetic energy possessed by all the molecules of a body. The S. I. unit of heat is joule/kg kelvin.

Question 2: Define the term calorie. How is it related with joule (the SI unit of heat)?

Answer: One calorie is the heat required to raise the temperature of 1 g of water from 14.5°C to 15.5°C

1 Calorie = 4.2 joule.

Question 3: Differentiate between heat and temperature.

Answer:

Heat Temperature

1. It is a form of energy. It is the sensation of hotness and coldness.

2. Unit of heat is Joule. Unit of temperature is °C or Kelvin.

Question 4: What are other units of heat? Name and define them.

Answer: (i) Calorie: It is the quantity of heat required to raise the temperature of 1 gm of water by 1°C (more accurately the rise in temperature is taken from 14.5°C to 15.5°C).

(ii) Kilo calorie: It is the quantity of heat required to raise the temperature of 1 kg of water by 1°C. It is equivalent to 1000 calories.

Question 5: How is the heat capacity of a body related to the specific heat capacity of its substance?

Answer: Heat capacity of a body = Mass of the body × Specific heat capacity of its substance.