Prism breaks light up into?

A. Seven Colors.

The body’s largest blood vessel is?

A. Aorta.

Sound can not travel through?

A. A vacuum.

Which of the following keeps the circulation of blood in the body?

A. Skeletal system

B. Nervous system

C. Cardiovascular system

D. All

CNG stands for?

A. Compressed Natural Gas.

Which of the following is not a conductor?

A. Copper

B. Glass

C. Silver

D. Aluminum

Which gas is used in Refrigerators to cool things?

A. Ammonia.

Which of the following convert chemical energy into electrical energy?

A. Generator

B. Motor

C. Battery

D. Moving-Coil meter

The S.I unit of electric current is?

A. Ampere.

The percentage of water in whole Milk is about?

A. 87%.