1. Steel is an alloy of iron and
A. aluminum
B. carbon
C. silicon
D. gold
A. aluminum
B. carbon
C. silicon
D. gold
2. An atom that has lost one or more electron(s) is called
A. a molecule
B. a proton
C. an ion
D. a negative particle
A. a molecule
B. a proton
C. an ion
D. a negative particle
3. In all machines, the efficiency is
A. always 100%
B. less than 100%
C. more than 100%
D. always 0%
A. always 100%
B. less than 100%
C. more than 100%
D. always 0%
4. In electronic circuits, LEDs are used to indicate the absence or presence of
A. voltage source
B. p-n junction
C. electric current
D. emitter and collector
A. voltage source
B. p-n junction
C. electric current
D. emitter and collector
5. Which of the following statements about the scientific method is/are correct? It provides
A. I only
B. I and II only
C. I and III only
D. II and III only
A. I only
B. I and II only
C. I and III only
D. II and III only
6. Which of the following substances is a compound
A. Hydrogen
B. Nitrogen
C. Oxygen
D. Water
A. Hydrogen
B. Nitrogen
C. Oxygen
D. Water
7. Which of the following source(s) of energy is/are renewable?
A. I only
B. I and II only
C. I and III only
D. I, II and III
A. I only
B. I and II only
C. I and III only
D. I, II and III
8. The pressure in fluids
A. increases with depth
B. decreases with depth
C. acts upwards at any point
D. acts differently in all directions
A. increases with depth
B. decreases with depth
C. acts upwards at any point
D. acts differently in all directions
9. Which of the following chemical equations is balanced?
A. N2 + H₂ → NH₃
B. N₂ + 3H₂ → NH₃
C. 2N₂ + H₂ → 2NH₃
D. N₂ + 3H₂ → 2NH₃
A. N2 + H₂ → NH₃
B. N₂ + 3H₂ → NH₃
C. 2N₂ + H₂ → 2NH₃
D. N₂ + 3H₂ → 2NH₃
10. Lime juice tastes sour because it is
A. acidic
B. alkaline
C. basic
D. salty
A. acidic
B. alkaline
C. basic
D. salty
11. A metal block has a mass of 1.0 kg. What is the volume of the block if its density is 10 kg m⁻³?
A. 0.01 m³
B. 0.10 m³
C. 1.00 m³
D. 10.00 m³
A. 0.01 m³
B. 0.10 m³
C. 1.00 m³
D. 10.00 m³
12. It is easier to move a heavy load with a crowbar when the
A. effort distance is shorter than the load distance
B. effort distance is longer than the load distance
C. effort distance is equal to the load distance
D. effort is equal to the load
A. effort distance is shorter than the load distance
B. effort distance is longer than the load distance
C. effort distance is equal to the load distance
D. effort is equal to the load
13. Benedict’s solution was added to a mixture in a test tube and it turned brick red when heated. The mixture is likely to contain
A. glucose
B. vitamin
C. protein
D. oil
A. glucose
B. vitamin
C. protein
D. oil
14. Chlorine gas is an example of
A. an atom
B. an element
C. a compound
D. a molecule
A. an atom
B. an element
C. a compound
D. a molecule
15. Which of the following statements about a force are correct? It
A. I and II only
B. I and III only
C. I, III and IV only
D. I, II, III and IV
A. I and II only
B. I and III only
C. I, III and IV only
D. I, II, III and IV
16. Kerosine is able to reach the other end of a wick by
A. diffusion
B. suction pressure
C. capillary action
D. osmosis
A. diffusion
B. suction pressure
C. capillary action
D. osmosis
17. Which of the following processes is used separate insoluble solids from liquids?
A. Sublimation
B. Filtration
C. Evaporation
D. Crystallization
A. Sublimation
B. Filtration
C. Evaporation
D. Crystallization
18. Which of the following chemical compounds is used in removing hardness in water?
A. NaCl
B. NaOH
C. Na₂CO₃
D. NaHCO₃
A. NaCl
B. NaOH
C. Na₂CO₃
D. NaHCO₃
19. When a thermometer is put in hot water, the mercury level rises because the mercury increases in
A. density
B. mass
C. volume
D. weight
A. density
B. mass
C. volume
D. weight
20. The work done when a force moves a body through a distance of 12 m is 720 J. The force applied is
A. 8640 N
B. 732 N
C. 708 N
D. 60 N
A. 8640 N
B. 732 N
C. 708 N
D. 60 N
21. Which of the following compounds is neutral to litmus paper?
A. HCl
B. H₂O
C. NaOH
D. KOH
A. HCl
B. H₂O
C. NaOH
D. KOH
22. A balanced diet is one which is made up of
A. right proportions of protein, carbohydrates and oils
B. equal amounts of protein, carbohydrates and oil
C. enough water and iodated salt
D. vegetables, fruits and water
A. right proportions of protein, carbohydrates and oils
B. equal amounts of protein, carbohydrates and oil
C. enough water and iodated salt
D. vegetables, fruits and water
23. The ovules in a flower develop to form the
A. fruit
B. leaf
C. seed
D. stem
A. fruit
B. leaf
C. seed
D. stem
24. Water drains faster through sand than clay because
A. sand particles are rougher
B. sand contains more air space
C. clay particles are smoother
D. clay particles are bigger
A. sand particles are rougher
B. sand contains more air space
C. clay particles are smoother
D. clay particles are bigger
25. The best method for checking erosion on a slope is
A. cover cropping
B. mixed cropping
C. contour ploughing
D. mulching
A. cover cropping
B. mixed cropping
C. contour ploughing
D. mulching
26. The housefly is an agent for the spread of
A. cholera
B. malaria
C. measles
D. tuberculosis
A. cholera
B. malaria
C. measles
D. tuberculosis
27. Which of the following substances are carried by blood?
A. II and III only
B. I, II and IV only
C. I and III only
D. I, III and IV only
A. II and III only
B. I, II and IV only
C. I and III only
D. I, III and IV only
28. Which of the following statements about a plant cell is correct?
A. does not have a nucleus
B. contains large vacuoles
C. is surrounded by the cell membrane only
D. does not have a definite shape
A. does not have a nucleus
B. contains large vacuoles
C. is surrounded by the cell membrane only
D. does not have a definite shape
29. The study of the soil profile of an area helps the farmer to
A. control weed growth
B. determine the soil temperature
C. determine the types of crop to grow
D. know the pesticides to use
A. control weed growth
B. determine the soil temperature
C. determine the types of crop to grow
D. know the pesticides to use
30. The term leaching in soils refers to
A. accumulation of organic matter
B. decomposition of plant materials
C. fixation of nitrogen
D. removal of soil nutrients by water
A. accumulation of organic matter
B. decomposition of plant materials
C. fixation of nitrogen
D. removal of soil nutrients by water
31. How many stages does the mosquito go through in its life cycle of development?
A. 1
B. 2
C. 3
D. 4
A. 1
B. 2
C. 3
D. 4
32. Which of the following enzymes helps in the digestion of protein in the human stomach?
A. I only
B. II only
C. I and II only
D. II and III only
A. I only
B. II only
C. I and II only
D. II and III only
33. Kidneys absorbs water from the blood stream of humans through the process of
A. diffusion
B. egestion
C. osmosis
D. assimilation
A. diffusion
B. egestion
C. osmosis
D. assimilation
34. An example of soil micro-nutrients is
A. copper
B. calcium
C. phosphorus
D. potassium
A. copper
B. calcium
C. phosphorus
D. potassium
35. The vegetable crop that requires it staking during its growth is
A. sweet pepper
B. garden eggs
C. tomatoes
D. hot pepper
A. sweet pepper
B. garden eggs
C. tomatoes
D. hot pepper
36. The function of the white blood cells in human is to
A. produce haemoglobin
B. produce digestive enzymes
C. ensure blood cloth during injury
D. produce antibodies to fight diseases causing organism
A. produce haemoglobin
B. produce digestive enzymes
C. ensure blood cloth during injury
D. produce antibodies to fight diseases causing organism
37. The carpel of a flower is made up of the following parts except
A. filament
B. ovary
C. style
D. stigma
A. filament
B. ovary
C. style
D. stigma
38. The food web shows how
A. food produced by plants is distributed to other parts of the plant
B. an organism protects itself in its environment
C. organisms depend on one for shelter
D. food produced by green plant is distributed among organism in a community
A. food produced by plants is distributed to other parts of the plant
B. an organism protects itself in its environment
C. organisms depend on one for shelter
D. food produced by green plant is distributed among organism in a community
39. Balanced ration enables animals to
A. increase fertility rate
B. maintain normal growth
C. increase meat production
D. maintain energy level of work animals
A. increase fertility rate
B. maintain normal growth
C. increase meat production
D. maintain energy level of work animals
40. Cultural practices are activities undertaken on a farm
A. after harvesting and before processing
B. before maturity and after harvesting
C. after planting and before harvesting
D. before transplanting seedlings
A. after harvesting and before processing
B. before maturity and after harvesting
C. after planting and before harvesting
D. before transplanting seedlings
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