The energy stored in the fossil fuel is _____.

1. 1. Heat energy
   2. Elastic potential energy
   3. Chemical energy
   4. Electrical energy

When the cat peas for its prey then the chemical energy present in its muscles is converted to _____.

1. 1. Potential energy then to kinetic energy
   2. Heat energy then to Nuclear energy
   3. Potential energy then to light energy
   4. Electrical energy then to heat energy

Electrochemical energy is required for the working of _____.

1. 1. Digestive system
   2. Nervous system
   3. Circulatory system
   4. Excretory System

When a body is dropped from a certain heigh, the gravitational potential energy is converted into _____.

1. 1. Light energy
   2. Elastic potential energy
   3. Chemical energy
   4. Kinetic energy

In cell chemical energy is transformed into _____.

1. 1. Heat energy
   2. Kinetic energy
   3. Electrical energy
   4. Potential energy

A person climbing a hill bends forward in order to _____.

1. 1. Increase stability
   2. Reduce fatigue
   3. Avoid slipping
   4. Increase speed

A thermostat is _____.

1. 1. An instrument by which the accuracy of thermometers determined
   2. A modern type of thermoflask which work on the principle of equipartition of heat energy
   3. A device which varies the temperature of a bath
   4. A device used to maintain a constant temperature of a water bath or an oven

Dead red blood corpuscles are stored in _____.

1. 1. Kidney
   2. Heart
   3. Spleen
   4. Liver

The largest cell in the human body is _____.

1. 1. Liver cell
   2. Nerve cell
   3. Muscle cell
   4. Kidney cell

The time interval between two beats of a normal human heart is _____.

1. 1. 1 second
   2. 0.7 second
   3. 3 seconds
   4. 4 seconds