Question 1

The very hard greenish-black deposit around the corners of the teeth is known as

A. gum disease.
B. plaque.
C. caries.
D. cavity.

Question 2

When equal amounts of water are poured on dry soil samples, the increase in weight per unit amount of soil would be highest in

A. gravel.
B. clayey soil.
C. sandy soil.
D. loamy soil.

Question 3

The following practices are cultural practices in crop production except

A. nursing.
B. pest control.
C. mulching.
D. weeding.

Question 4

An example of a mixture is

A. sodium sulphate.
B. hydrogen chloride.
C. ammonia.
D. salt solution.

Question 5

Which of the following statements about acids are correct?

I. They turn red litmus paper blue.
II. They can be neutralized by bases.
III. Citrus fruits contain acids.

A. I and II only
B. II and III only
C. I and III only
D. I, II and III

Question 6

The practice of reducing the number of seedlings per stand for better growth is known as

A. earthing up.
B. filling in.
C. pricking out.
D. thinning out.

Question 7

A herbal mixture has a volume of 200 m³ and a mass of 10,000 kg. Determine the density of the mixture.

A. 50 kg m^-3
B. 200 kg m^-3
C. 800 kg m^-3
D. 10,200 kg m^-3

Question 8

How many atoms are present in H₂O₂?

A. 5
B. 4
C. 3
D. 2

Question 9

Which of the following electronic components is not made of semiconductors?

A. Capacitor
B. Diode
C. LED
D. Transistor

Question 10

Steam changes to liquid by a process called

A. evaporation.
B. condensation.
C. melting.
D. boiling.

Question 11

Which of the following body shapes facilitates movement in a fluid?

A. Rectangular
B. Spherical
C. Streamline
D. Triangular

Question 12

Stirring of soil on vegetable beds is to

I. improve aeration of soil.
II. increase activities of soil organisms.
III. increase water penetration in the soil.
IV. reduce weed growth.

A. I and II only
B. I, III and IV only
C. II, III and IV only
D. I, II and IV only

Question 13

The base of the N-P-N transistor normally

A. is a p-type semiconductor.
B. is an n-type semiconductor.
C. is undoped semiconductor.
D. has electrons as majority charge carriers.

Question 14

One benefit of technology to industrialization is

A. increase in cost of production.
B. reduction in skillful labour.
C. provision of machinery.
D. environmental pollution.

Question 15

Contour ploughing is normally practiced on

A. hard-rocky lands
B. muddy lands.
C. non-fertile lands.
D. sloppy lands.

Question 16

A pupil of mass 70 kg climbed a building of height 15 m. Determine the pupil's potential energy at the top of the building.
[g = 10 m^-2]

A. 10,500 J
B. 5,250 J
C. 1,050 J
D. 700 J

Question 17

Which of the following pairs of structures are present in animal cells?

A. Mitochondrion and Chloroplast
B. Nucleus and Chloroplast
C. Vacuole and Nucleus
D. Cell wall and Mitochondrion

Question 18

Artificial satellites can be used for

I. communication.
II. oil and gas exploration.
III. meteorological studies.

A. I only
B. II only
C. I and II only
D. I, II and III

Question 19

The image formed by a plane mirror is always

A. real.
B. magnified.
C. inverted.
D. virtual.

Question 20

The following practices are principles in crop production except

A. land selection.
B. pests and diseases control.
C. seed planting.
D. harvesting and processing.

Question 21

Which of the following pairs of elements is in the same period in the periodic table?

A. ₅B and ₁₃Al
B. ₁H and ₃Li
C. ₄Be and ₅B
D. ₁₁Na and ₁₉K

Question 22

The daily variation of atmospheric conditions is called

A. climate.
B. weather.
C. season.
D. humidity.

Question 23

To test for starch in a green leaf, it is usually boiled to

A. isolate the starch.
B. kill the leaf.
C. make the leaf soft.
D. extract the chlorophyll.

Question 24

The following effects are as a result of soil erosion except

A. increase in bushfires.
B. weakening support of plants.
C. loss of important minerals to plants.
D. weakening of support of buildings.

Question 25

The following products, X, Y, Z and W have masses 0.05 kg, 50 mg, 500 g and 0.05 g respectively.
Use this information to answer the question below.

If all the products have equal volumes, which of the product(s) would have the highest density?

A. X
B. Y
C. Z
D. W and X

Question 26

The following products, X, Y, Z and W have masses 0.05 kg, 50 mg, 500 g and 0.05 g respectively.
Use this information to answer the question below.

Which of the products have the same mass?

A. Y and W
B. X and Y
C. Y and Z
D. X and W

Question 27

Which of the following ions is formed by the loss of 2 electrons?

A. Ca²⁺
B. S^2-
C. K⁺
D. F^-

Question 28

The farming system that makes the most effective use of land is

A. crop rotation.
B. land rotation.
C. mixed cropping.
D. mixed farming.

Question 29

An example of a natural source of light is

A. lantern.
B. moon.
C. glow worm.
D. torchlight.

Question 30

The SI unit that is derived is

A. kg.
B. k.
C. Pa.
D. s.

Question 31

The grouping together of many stars is known as

A. comet.
B. astronomy.
C. solar-system.
D. galaxy.

Question 32

The current in a resistor is 3A. If the resistance of the resistor is 4 ohms, determine the potential difference across the resistor.

A. 0.75 V
B. 1.33 V
C. 7.00 V
D. 12.00 V

Question 33

Anemometer is an instrument for measuring.

A. relative humidity.
B. rainfall amount.
C. wind direction.
D. wind speed.

Question 34

Which of the following statements distinguishes arteries from veins?

A. Arteries have relatively narrow lumen while veins have relatively wide lumen.
B. Arteries transport blood to the heart while veins carry blood away from the heart.
C. Arteries carry deoxygenated blood while veins carry oxygenated blood.
D. Arteries have valves while veins do not have valves.

Question 35

The element used in the manufacturing of electronic components is

A. sodium.
B. fluorine.
C. silicon.
D. neon.

Question 36

Which of the following factors has the greatest influence on vegetable crop production?

A. Availability of labour
B. Nearness to market
C. Source of water
D. Presence of pest

Question 37

The brightest of all the planets is

A. Mars.
B. Saturn.
C. Uranus.
D. Venus.

Question 38

The use of separating funnel is most appropriate for separating which of the following mixtures?

A. Sulphur and water
B. Water and sodium chloride
C. Vegetable oil and kerosene
D. Water and vegetable oil

Question 39

When a ray of light travels from a dense medium into a denser medium, it

A. bends towards the normal.
B. bends away from the normal.
C. is parallel to the incident ray.
D. is perpendicular to the incident ray.

Question 40

The two main particles in the nucleus of an atom are

A. neutrons and protons.
B. neutrons and electrons.
C. shells and neutrons.
D. electrons and protons.