Integrated Science Mock 2026

Question 1 of 50

Which of the following is the basic unit of life?

Question 2 of 50

The SI unit of force is the

Question 3 of 50

Which gas is given off during photosynthesis?

Question 4 of 50

Which of the following is a renewable source of energy?

Question 5 of 50

Which of the following is a physical change?

Question 6 of 50

Which gas turns lime water milky?

Question 7 of 50

The reaction between an acid and a base to form salt and water is called

Question 8 of 50

A solution with a pH of 3 is

Question 9 of 50

Malaria is transmitted by the bite of an infected female

Question 10 of 50

An atom has 11 protons and 12 neutrons. What is its mass number?

Question 11 of 50

The electronic configuration of an element with atomic number 12 is

Question 12 of 50

Isotopes of an element have the same number of

Question 13 of 50

The process used to obtain pure water from sea water is

Question 14 of 50

Paper chromatography is used to separate

Question 15 of 50

A substance that speeds up a chemical reaction without itself being used up is a

Question 16 of 50

The process by which nitrogen gas in the air is changed into nitrates in the soil by bacteria is

Question 17 of 50

The first stage in the germination of a seed is the uptake of water called

Question 18 of 50

Which blood group is known as the universal donor?

Question 19 of 50

Two 6 Ω resistors are connected in parallel. Find the total resistance.

Question 20 of 50

Which of the following is a vector of the disease river blindness (onchocerciasis)?

Question 21 of 50

In processing cassava into gari, the grated cassava is fermented and pressed mainly to

Question 22 of 50

Soft soap is usually made with

Question 23 of 50

A steel ship floats although steel is denser than water because

Question 24 of 50

A short-sighted person sees distant objects clearly with

Question 25 of 50

Two parents with genotype Tt (T = tall, dominant) are crossed. What fraction of the offspring is expected to be short (tt)?

Question 26 of 50

The formula of aluminium oxide is

Question 27 of 50

Palm wine becomes sour over time because

Question 28 of 50

How many neutrons are in ³⁷₁₇Cl?

Question 29 of 50

Which process removes carbon dioxide from the atmosphere?

Question 30 of 50

In the human eye, the part that focuses light onto the retina by changing shape is the

Question 31 of 50

A person whose pancreas produces too little insulin will have

Question 32 of 50

Biological control of pests uses

Question 33 of 50

A 10 N force acts at the end of a 0.3 m spanner. The moment is

Question 34 of 50

A block weighs 10 N in air and 6 N in water. The upthrust on it is

Question 35 of 50

When the biceps contracts, the triceps

Question 36 of 50

An element X has atomic number 12. The formula of its chloride is

Question 37 of 50

Which pair of substances can be separated by sublimation?

Question 38 of 50

The mass of 0.2 mol of CaCO₃ (Ca = 40, C = 12, O = 16) is

Question 39 of 50

Which property shows that a substance is pure?

Question 40 of 50

In the nitrogen cycle, the conversion of ammonium compounds to nitrates is

Question 41 of 50

Lightning contributes to the nitrogen cycle by

Question 42 of 50

Which blood vessel has the highest blood pressure?

Question 43 of 50

The wall of the left ventricle is thicker than that of the right because it

Question 44 of 50

A pump raises 500 kg of water through 12 m in 1 minute (g = 10 m/s²). Its power is

Question 45 of 50

An object of mass 2 kg falls freely from rest for 3 s (g = 10 m/s²). Its kinetic energy is

Question 46 of 50

Leaching of nutrients is most severe in

Question 47 of 50

Which disease is caused by a protozoan transmitted by the tsetse fly?

Question 48 of 50

The formula of iron(III) oxide is

Question 49 of 50

A car of mass 1,000 kg accelerates from 10 m/s to 30 m/s. The work done by the engine (ignoring friction) is

Question 50 of 50

A machine has efficiency 75% and velocity ratio 8. What effort lifts a load of 600 N?