Science - KCPE 2021 Prediction Set 4 (Questions and Answers)

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  1. Which one of the following is a stem tuber?
    A. Sweet Potato
    B. Arrow root
    C. Irish potato                    
    D. Sugarcane

The diagram below represents the human digestive system

science set 4 q2.png

  1. What is the CORRECT names of the labelled parts?
     

    J

    K

    L

    M

    A

    Stomach

    ileum

    colon

    gullet

    B

    Colon

    ileum

    stomach

    gullet

    C

    Liver

    stomach

    trachea

    colon

    D

    Oesophagus

    trachea

    liver

    gullet

  1. In which order do the colours of a rainbow appear, from the bottom to the top?
    A. Red, violet, orange, yellow, blue, green indigo
    B. Orange, yellow, blue, violet, green, indigo, red
    C. Violet, indigo, blue, green, yellow, orange, red
    D. Red, orange, green yellow, blue, indigo, violet
  2. Which forms of energy do not require a medium to be transferred from one point to another?
    A. Light and heat
    B. Electricity and light
    C. Sound and heat
    D. Electricity and sound.
  3. The exchange of food nutrients and oxygen from the mother's blood to the foetus blood occurs through the:
    A. oviduct
    B. placenta
    C. amnion                         
    D. fallopian tube
  4. The removal of waste products produced by different body organs in called:
    A. Digestion
    B. Excretion
    C. Egestion                        
    D. Ingestion
  5. Which one of the following diseases has no cure?
    A. Syphilis
    B. AIDS
    C. Gonorrhoea                   
    D. Chancroid
  6. Which one of the following pairs consists of animals with webbed feet for swimming?
    A. Duck and turtle
    B. Fish and frog
    C. Toad and dolphin          
    D. Tortoise and whale
  7. Std 6 pupils at Griffins School made a set up to investigate a certain aspects of light as shown below.
    science set 4 q9.png
    The aspects being investigated was:
    A. formation of rainbow
    B. formation of shadows
    C. light reflection
    D. light refraction
  8. Below is a feeding relationship representing a food chain.
    science set 4 q10.png
    Which of the following animals would correctly be represented by X?
    A. Rat
    B. Mongoose
    C. Hawk                            
    D. Hedgehog
  9. In which method of grazing are the animals fed mainly on fodder crops?
    A. Stall feeding
    B. Paddocking
    C. Herding                         
    D. Tethering
  10. Which method of preserving food does NOT dehydrate food?
    A. Salting
    B. Canning
    C. Smoking                       
    D. Drying
  11. The scum seen on hard water after using a bar of soap to wash is formed by:
    A. colour of the water
    B. soil particles in water
    C. dissolved minerals
    D. soap lather.
  12. The component of air that is used in making billboards in the pie chart below is represented by:
    science set 4 q14.png
    A. (i)
    B. (ii)
    C. (iii)                               
    D. (iv)
  13. Which of the following pairs shows recreational uses of water ONLY?
    A. Swimming and watering plant
    B. Boat racing and making fountains
    C. Cleaning pulp and watering crops.
    D. Surfing and water skiing.
  14. Which pairs of non-living components of the environment are used by animals directly?
    A. Soil and water
    B. Water and air
    C. Air and soil
    D. Water and plants.
  15. Which one of the following is a safety measure to avoid being struck by lightning?
    A. Staying in an open field.
    B. Avoid inserting metal objects into sockets.
    C. Wearing shoes with rubber soles
    D. Fitting lightning arresters on buildings made of wood.
  16. Which one of the following parts of human breathing system are both used to filter and moisten the air?
    A. Trachea and gullet
    B. Nose and trachea
    C. Diaphragm and ribs
    D. Nose and lung.
  17. A patient with blood in the stool is likely to have:
    A. pain in the lower abdomen
    B. skin rashes
    C. pain in joints
    D. pale fingers.
  18. Which one of the following is NOT a method of conserving soil?
    A. Mulching
    B. Contour farming
    C. Cover cropping              
    D. Cultivating along river banks.
  19. The process of changing a liquid into gas is known as:
    A. melting
    B. vapourization
    C. condensation
    D. freezing
  20. The softness and loudness of sound is described as
    A. pitch
    B. volume
    C. noise                             
    D. special sound
  21. The component of blood with irregular shape is useful in:
    A. transporting nutrient
    B. transporting oxygen
    C. fighting diseases
    D. clotting blood
  22. The diagram below represents a windsock.
    science set 4 q24.png
    Which is the best material to make part X?
    A. Socks
    B. Old clothes
    C. Polythene bag                
    D. Old mosquito net
  23. Which one of the following aspects is NOT expressed in Newtons?
    A. Effort
    B. Friction
    C. Gravity                         
    D. Inertia
  24. Which one of the following water pollutants leads to water borne diseases if water is consumed untreated?
    A. Floods
    B. Raw sewage
    C. Farm chemicals             
    D. Acid rain
  25. Which crop pest destroy crops by sucking?
    A. Aphid
    B. Cutworm
    C. Weevil                          
    D. Rat
  26. The weed that makes animal milk to have an unpleasant taste is: -
    A. oxalis
    B. wandering jew
    C. mexican marigold
    D. black jack
  27. The vaccine that protects an infant from most diseases is likely to be:
    A. BCG
    B. DPT
    C. anti-measles                  
    D. anti-polio
  28. Birds are similar to reptiles in that both:
    A. lay unfertilized eggs
    B. eat the same type of food
    C. have scales
    D. care for young ones.
  29. Which one of the following vitamins assists our body to resist diseases?
    A. Vitamin E
    B. Vitamin K
    C. Vitamin C
    D. Iron
  30. Light energy is useful when:
    A. cooking
    B. seeing
    C. warming
    D. drying
  31. The figure below represents a flower.
    science set 4 q33.png
    Which part does the same function as a vagina in the female reproductive system?
    A. P
    B. Q
    C. R                                  
    D. S
  32. Which of the following substances is NOT prohibited although it is harmful to the user?
    A. Alcohol
    B. Bhang
    C. Cocaine                        
    D. Glue
  33. When comparing the rates of capillarity in different soils, it important that all the following factors are kept constant EXCEPT:
    A. size of funnels
    B. amount of cotton wool.
    C. type of soil.
    D. amount of water.
  34. Which one of the following substances CANNOT be attracted by a magnet?
    A. Copper
    B. Iron
    C. Steel                              
    D. Nickel
  35. Hard water can be made soft through:
    A. boiling
    B. filtering
    C. adding chlorine             
    D. evaporating
  36. Std 5 pupils set up an experiment as shown in the figure below to investigate a certain property of matter.
    science set 4 q38.png
    The pupils concluded that:
    A. air has weight
    B. water contains air
    C. water contain bubbles
    D. air occupies space.
  37. Water can be conserved in many ways. Which action conserves water through using it sparingly?
    A. Repairing leaking taps
    B. Mulching
    C. Use of drip irrigation
    D. Use of terracing.
  38. Which one of the following nutrients is useful in the body for building body tissues?
    A. Carbohydrates
    B. Proteins
    C. Vitamin
    D. Minerals
  39. Which one of the following activities conserves both water and soil at the same time?
    A. Mulching
    B. Gabion building
    C. Shading
    D. Terracing
  40. Which type of crop among the following is used to make ropes, mats and carpets?
    A. Beverage crop
    B. Fibre crop
    C. Cash crop                      
    D. Vegetable
  41. During a Science lesson to investigate factors affection sinking and floating, Std 4 pupils crushed a bottle and placed it in a container with water. The bottle sunk. The factor that was being investigated was:
    A. shape
    B. material
    C. density                          
    D. size
  42. The type of soil erosion that forms small channels on a gentle slope is called:
    A. sheet
    B. gulley
    C. splash                           
    D. rill
  43. Which one of the following levers has the load between the effort and fulcrum?
    A. Crow bar                
    B. Craw hammer
    C. Wheelbarrow                
    D. Spade
  44. Which aspect of matter is expressed using the instrument drawn below?
    science set 4 q46.png
    A. Mass
    B. Newton
    C. Inertia                           
    D. Weight
  45. Which one of the following is NOT a disadvantage of force that opposes movement?
    A. Causes tear and wear
    B. Causes unwanted heat
    C. Causes use of more effort
    D. Can be reduced through use of grease.
  46. Mutton and mohair are products from:
    A. goat
    B. sheep
    C. cattle                             
    D. poultry
  47. In our environment, bacteria and fungi are commonly referred to us:
    A. consumers
    B. producers
    C. decomposers
    D. scavengers
  48. Which of the following animals feeds on mixed diet?
    A. Goat
    B. Monkey
    C. Lion                              
    D. Hippopotamus


ANSWERS

science set 4 ms

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