Which of the following is a liquid?

A. Iron

B. Mercury

C. Brass

D. Gold

E. Aluminium

The space occupied by matter is its

A. area

B. length

C. radius

D. width

E. volume

Which of the following processes could be used to obtain water from a salt solution?

A. Filtration

B. Decantation

C. Evaporation

D. Distillation

E. Sedimentation

The portion of air which is used in burning is

A. nitrogen

B. water vapour

C. oxygen

D. carbon dioxide

E. inert gas

Brine is a saturated solution of

A. sodium chloride and carbon dioxide

B. calcium carbonate and water

C. sodium chloride and water

D. calcium carbonate and kerosene

E. magnesium and water

The chemical symbol for iron is

A. I

B. K

C. Fe

D. Au

E. Cl

A torchlight derives its energy from

A. petrol

B. kerosene

C. a magnet

D. gas oil

E. a dry cell

A substance which cannot be broken down into simpler substances is called

A. a molecule

B. a compound

C. an element

D. a mixture

E. an atom

What type of energy is lost when sweat evaporates from the body?

A. light energy

B. mechanical energy

C. chemical energy

D. Heat energy

E. Electrical energy

The process by which steam is changed into liquid is called

A. evaporation

B. condensation

C. filtration

D. melting

E. sublimation