Integrated Science Mock 2020

Question 1 of 50

The probability that a baby will be a boy is

Question 2 of 50

The number of protons in the nucleus of an atom is its

Question 3 of 50

Which is a physical change?

Question 4 of 50

The chemical formula of water is

Question 5 of 50

Which gas is used by divers in breathing cylinders, mixed with nitrogen?

Question 6 of 50

Rusting of iron requires

Question 7 of 50

The process by which plants lose water vapour through their leaves is

Question 8 of 50

Decomposers return nutrients to the soil by

Question 9 of 50

A frog undergoes metamorphosis from egg to

Question 10 of 50

Food is absorbed into the blood mainly in the

Question 11 of 50

The function of the kidneys is to

Question 12 of 50

Xylem tissue in plants transports

Question 13 of 50

The SI unit of work and energy is the

Question 14 of 50

Which is a renewable source of energy?

Question 15 of 50

A boy pushes a box with 50 N through 6 m. How much work does he do?

Question 16 of 50

Malaria parasites are carried by the female

Question 17 of 50

A balanced diet must contain

Question 18 of 50

Which practice improves soil fertility?

Question 19 of 50

Global warming is caused mainly by the build-up of

Question 20 of 50

Which is a sexually transmitted infection?

Question 21 of 50

A body at rest stays at rest unless acted on by an external force. This is

Question 22 of 50

Momentum is the product of

Question 23 of 50

A testable explanation proposed before an experiment is a

Question 24 of 50

Information gathered using the senses is an

Question 25 of 50

A sudden change in the genetic material of a cell is

Question 26 of 50

Separating a mixture of ethanol and water uses

Question 27 of 50

Which part of the eye controls the amount of light entering?

Question 28 of 50

The organ of balance is in the

Question 29 of 50

An object floats when its density is

Question 30 of 50

Sound travels fastest through

Question 31 of 50

Solar panels produce direct current (DC). To run normal household appliances you need

Question 32 of 50

A charge controller in a solar system mainly

Question 33 of 50

The factor that is deliberately changed in an experiment is the

Question 34 of 50

Repeating an experiment several times mainly improves its

Question 35 of 50

The group in an experiment that is not given the treatment is the

Question 36 of 50

The hormone that lowers blood sugar is

Question 37 of 50

A force of 20 N moves a box 5 m in the direction of the force. The work done is

Question 38 of 50

A 2 kg mass at 10 m above the ground has potential energy (g = 10 m/s²)

Question 39 of 50

The resistance of a conductor carrying 2 A with a p.d. of 12 V is

Question 40 of 50

Pressure exerted by a force of 50 N on an area of 0.5 m² is

Question 41 of 50

A 1.5 kW heater runs for 2 hours. Energy used is

Question 42 of 50

The efficiency of a machine that gives 400 J output for 500 J input is

Question 43 of 50

The upthrust on a body fully immersed in water equals the

Question 44 of 50

Cholera is best prevented by

Question 45 of 50

A solution of pH 2 is

Question 46 of 50

When an acid reacts with a carbonate, the gas given off is

Question 47 of 50

Neutralisation produces

Question 48 of 50

A 60 W bulb is used for 5 hours. Energy used is

Question 49 of 50

A car of mass 1000 kg moving at 10 m/s has kinetic energy

Question 50 of 50

Eutrophication of water bodies is caused mainly by