Question

The quantity of heat required to raise the temperature of 1 gm of water through 1 degree centigrade is called as
1. Kelvin
2. Calorie
3. Joule
4. Pascal

Answer 1

Correct Answer - Option 2 : Calorie

Explanation:

Calorie

• The quantity of heat required to raise the temperature of one gm of a substance through 1°C is called Calorie. 

Temperature: 

• It is the measure of the degree of hotness and coldness of a body.
• The SI unit of temperature is Kelvin (K).
• It is the base unit of temperature, denoted with K.
• There are no negative numbers on the Kelvin scale as the lowest is 0 K.

• The relation between Celsius and Kelvin is given by:

• °C + 273.15 = K

Joule 

• It is a SI unit of energy or work done which is represented by J.

• 1 joule = 1 watt. Sec

Pressure

• The pressure is defined as the force per unit area (Pressure = Force/Area)
• SI unit of pressure is ‘Pascal’ and it is denoted by Pa.
• 1 Pascal equals the pressure of 1 newton per square meter and the formula is as follows: 1 Pa = 1N/m2 = 1 kg/m.