Science Questions and Answers - KCPE 2023 Prediction Papers Set 1

1. The property of light used in the working of a candle in a dark room is that light
   1. disperses in different directions.
   2. spreads in all directions
   3. bend at a corner
   4. travel in a straight line.
2. Which of the following is the function of the last teeth to be shed?
   1. Tearing food.
   2. Holding food.
   3. Grinding food.
   4. Cutting food.
3. Which of the following plants are correctly matched with the type of root system?
   

   	Fibrous root	Tap root
   A.	Green grams	Onion
   B.	Wandering jew	Sisal
   C.	Cocnut	Acacia
   D.	Millet	Sorghum

4. In the structure of the mammalian heart, the blood vessel that carries blood to the Left auricle is the
   1. Pulmonary vein
   2. Aorta
   3. Pulmonary artery
   4. Vena cava
5. Which one of the following statements about reproduction in human beings is correct?
   1. The embryo develops into a zygote.
   2. Amniotic fluid nourishes the foctus.
   3. Ovulation takes place in the oviduct.
   4. Labour pain is caused by contraction of the uterine walls.
6. Which of the following is the main information usually given when obtaining medicine from a doctor?
   1. Disposal method of the medicine.
   2. The prescribed dose. 
   3. How to store the medicine.
   4. Duration to complete dose.
7. Which of the following ways do plants depend on animals?
   1. Nutrients and shelter.
   2. Shade and medicine.
   3. Pollination and carbon dioxide. 
   4. Habitat and pollination.
8. Which one of the following diseases cannot be prevented by maintaining proper hygiene and sanitation?
   1. Cholera
   2. Bilharzia
   3. Typhoid
   4. Malaria.
9. Which one of the following pairs make up the embryo of a maize seed?
   1. Plumule and endosperm.
   2. Radicle and plumule.
   3. Endosperm and cotyledon.
   4. Cotyledon and radicle.
10. The diagram below was set up to demonstrate a certain aspect of light.
    
    The aspect of light that was being demonstrated was
    1. spitting of light.
    2. bending of light.
    3. bouncing of light.
    4. how light travels.
11. The following are advantages of manure and fertilizers:
    1. improve soil structure.
    2. nutrients are released immediately
    3. bind soil particles together.
    4. have specific amount of nutrients.
    5. have long term effect in the soil.
       Which statements are true about fertilizers?
       1. (i) and (iv)
       2. (iv) and (v)
       3. (ii) and (iv)
       4. (iii) and (v)
12. Which one of the following is not true about pressure exerted by liquids? Pressure in liquids increases when
    1. depth of liquid is increased.
    2. diameter of container is reduced.
    3. container with liquid is raised.
    4. amount of liquid is increased.
13. Which one of the following is an effect of IIIV infection to the family?
    1. Increases number of orphans.
    2. Lowering of self-esteem.
    3. Poor performance at work.
    4. Increased number of school drop-outs.
14. Which one of the following groups consist of non-flowering plants?
    1. Mushroom, grass, toadstool. 
    2. Conifers, cabbage, sisal.
    3. Mould, onions, bracket tree.
    4. Algae, moss, liverworts
15. Which one of the following is true about solids and liquids? Both have 
    1. indefinite mass
    2. definite volume Bindefinite volume.
    3. definite shape 
    4. indefinite volume.
16. Which one of the following pairs consist of planets, with the shortest orbits?
    1. Mars and Jupiter.
    2. Earth and Saturn.
    3. Venus and Mercury.
    4. Neptune and Uranus.
17. Which one of the following is a renewable source of energy?
    1. Natural gas
    2. Kerosene
    3. Diesel
    4. Biogas.
18. The diagram below shows a method of conserving water.
    
    The method of water conservation shown above is
    1. recycling water.
    2. using water sparingly.
    3. re-using water.
    4. harvesting water. 
19. Which one of the following animalslay eggs, has constant body temperature and its body is covered with fur?
    1. Spiny ant cater
    2. Whale
    3. Shark
    4. Flying fox.
20. Which one of the following is the function of the rectum?
    1. Absorbs water.
    2. Absorbs digested food.
    3. Stores undigested food.
    4. Completes digestion of food.
21. Which one of the following levers can work with the fulcrum between the load and effort?
    1. Fishing rod.
    2. Wheel barrow
    3. Spade
    4. Crowbar
22. The diagram below shows a single fixed pulley.
    
    At what position should a spring balance be fixed in order to measure the force applied?
    1. Q
    2. T
    3. R
    4. S
23. Among the following, which one does not contain chemical energy?
    1. Food
    2. Dynamo
    3. Car battery
    4. Charcoal
24. The best way of controlling whooping cough is by
    1. avoiding crowded places. 
    2. drinking boiled milk.
    3. vaccination.
    4. treatment.
25. Which of the following is not an essential constituent of commercial animal feeds?
    1. Roughage
    2. Proteins
    3. Carbohydrate
    4. Vitamins.
26. Special sounds can have all the following meanings except
    1. when someone needs help.
    2. when a baby is happy.
    3. change from one activity to another.
    4. give way on the road.
27. The component of air that makes up 0.97% of the atmosphere is used in
    1. breathing.
    2. making bulbs.
    3. preservation of soft drinks.
    4. making plant proteins 
28. Which one of the following parasite control measure is capable of controlling lungworms and ticks?
    1. Paddocking
    2. Spraying
    3. Dipping
    4. Deworming
29. Sound travels poorest in
    1. vacuum
    2. copper
    3. air
    4. water.
30. The diagram below represents the female reproductive system.
    
    In the diagram above the part marked W is the place where
    1. implantatin of zygote take place.
    2. development of the embryo take place.
    3. mature ovum is released. D
    4. fusion of sex cell take place.
31. The following are facts about HIV/AIDS except AIDS
    1. is caused by a virus called HIV.
    2. is transmitted through blood transfusion.
    3. has no cure.
    4. is a curse and not a disease.
32. A mixture of beans and sorghum can be separated by either
    1. picking or sieving
    2. sieving or winnowing
    3. winnowing or decanting
    4. decanting or sieving
33. Which of the following is the main reason for food preservation? To A
    1. develop its flavour.
    2. use it later.
    3. retain nutrients.
    4. retain its colour.
34. Which one of the following plants store food in the stem?
    1. Sweet potatoes
    2. Arrow roots
    3. Cassava
    4. Irish potatoes
35. A suitable diet for a child with rapid heartbeat and pale fingernails is 
    1. beans and beef.
    2. rice and carrots.
    3. .spinach and kidney.
    4. potatoes and eggs.
36. Which one of the following would be observed when two similar balloons are rubbed against the same material then brought close together? They
    1. would attract each other.
    2. would burst
    3. will neither attract nor repel
    4. would repel each other.
37. Class four pupils put a long piece of wire in water and it sank. They cut the same piece of wire into two equal pieces and they still sank. Which factor affecting floating and sinking were they investigating?.
    1. Size
    2. Weight 
    3. Material
    4. Shape.
38. The following are some effects of drug abuse;
    1. Withdrawal symptoms.
    2. Truancy
    3. Addiction
    4. Drug induced accidents
    5. Lack of concentration
       Which one of the following consists of health effects only?
       1. (i) and (iv)
       2. (ii) and (iii)
       3. (v) and (ii)
       4. (iii) and (v)
39. Which one of the following statements is true about the second stage of HIV infection? 
    1. This is a dangerous stage of infection.
    2. If HIV test is carried out the result is positive.
    3. The body is weak and cannotfight infection.
    4. There are visible signs.
40. Class five pupils put wet tea leaves in a transparent glass container filled with water and heated it gently at the bottom. Which one of the following aspects of matter were they investigating?
    1. Convection in air. 
    2. Conduction in solids.
    3. Convection in liquids
    4. Radiation in air.
41. The main reason why ball bearings are used between parts that are in contact is to
    1. absorb unnecessary sound.
    2. make the machine last longer.
    3. increase the grip between the parts.
    4. reduce opposing force.
42. The diagram below shows a compost heap.
    
    From the above diagram, it is true to say that 
    1. layer O feeds the decomposers.
    2. layer N is made of top soil.
    3. the manure is made by animals waste.
    4. the manure contain specific nutrients.
43. During a science lesson, pupils carried out the following activities:
    1. put a young plant in coloured water for some hours.
    2. cut the stem and leaves after sometime and observed the part cut.
       Which process in plants were they investigating?
       1. Absorption
       2. Transpiration
       3. Transportation
       4. Photosynthesis
44. Which one of the following is true about the energy saving jiko?
    1. It cooks faster than other jikos
    2. Less fuel is used.
    3. It is made from cheap materials. 
    4. It is portable.
45. Which of the following is not a major non-living component of environment?
    1. Water
    2. Plant
    3. Soil
    4. Air.
46. Which of the following physical changes during adolescence take place in both boys and girls? 
    1. Increase in height and weight. 
    2. Hips broaden.
    3. Broadening of shoulders.
    4. Menstruation starts.
47. Air is polluted by all the following ways except
    1. vehicle exhaust fumes.
    2. smoking tobacco.
    3. decomposing vegetable matter. 
    4. gases from burning domestic waste.
48. The diagram below shows an inclined plane.
    
    Which one of the following should be done to use less effort? 
    1. Increase the length CA.
    2. Reduce the length BA.
    3. the length AB.
    4. Reduce the length CB.
49. Which one of the following materials is non magnetic?
    1. Steel wool
    2. Sewing needle
    3. Staple pins
    4. Aluminium plate.
50. A pen and a book were released two metres above the ground at the same time. Which of these statements is true about the observation done?
    1. Pen hit the ground first. 
    2. Both hit the ground at the same time.
    3. The book was the last to hit the ground.
    4. The book and the pen hit the ground almost the same time.

MARKING SCHEME

1. B
2. C
3. C
4. B
5. D
6. B
7. C
8. D
9. B
10. B
11. C
12. C
13. A
14. D
15. B
16. C
17. D
18. B
19. A
20. C
21. D
22. A
23. B
24. C
25. A
26. B
27. B
28. A
29. C
30. D
31. D
32. A
33. B
34. D
35. C
36. D
37. A
38. D
39. B
40. C
41. D
42. A
43. C
44. B
45. B
46. A
47. C
48. A
49. D
50. B