Gulielmo Marconi invented?

A. Radio.

The unit of mass in C.G.S system is?

b

The main functions of kidneys are?

A. To produce urine

B. To filter And remove waste

C. To regulate body Water

D. All

The body’s largest blood vessel is?

A. Aorta.

Blood pressure is measured by?

A. Sphygmomanometer.

The chemical formula of Lime is?

A. CaO.

Sulfur is used in?

A. Fireworks

B. Skin diseases

C. Insecticides

D. All Of These

The air contains?

A. Nitrogen

B. Oxygen

C. Inert gas

D. All Of These

The age of a tree is determined by? .

A. Rings

Pulse beat is measured from?

A. Artery.