Science - KCPE 2021 Prediction Set 1 (Questions and Answers)

1. Which one of the following blood vessels transports oxygenated blood to the heart?
   A. Aorta
   B. Pulmonary Artery
   C. Venacava
   D. Pulmonary vein
2. Which one of the following should be most abundant in food chain?
   A. Producers
   B. Secondary consumers
   C. Primary Consumers
   D. Tertiary consumers
3. Landslide is a form of
   A. splash erosion
   B. sheet erosion
   C. gulley erosion
   D. rill erosion.
4. Doctor Moses saw a boy with the following symptoms in his clinic.
   i) Fever
   ii) Abdominal pains
   iii) Diarrhea          
   iv) Dehydrated skin
   The boy was mostly suffering from
   A. malaria                          B. typhoid
   C. bilharzia                         D. cholera.
5. The diagram below shows arrangement of materials in a compost pit.
   
   Which material is represented by letter K?
   A. Kitchen refuse
   B. Maize stalk
   C. Ashes                            
   D. Farmyard manure
6. Which one of the following pairs represents the smallest and the brightest planets in the solar system?
   A.Venus and Jupiter
   B. Mercury and Mars.
   C. Venus and Mars
   D. Mercury and Venus
7. When investigating drainage in the soils, what should NOT be the same?
   A. Amount of cotton wool
   B. Amount of water
   C. Size of funnel
   D. Size of collecting jar
8. Which one of the following methods of food preservation would be the BEST to preserve kales in very hot areas?
   A. Salting
   B. Use of honey
   C. Drying                         
   D. Use of chemical
9. Fertilizers are grouped in to either straight or compound. Among the following types, which one is a compound fertilizer?
   A. Urea.                
   B. Diammonium Phosphate
   C. Single super phosphate
   D. Calcium Nitrate
10. Which of the following may NOT lead to water pollution?
    A. Floods
    B. Acid rain
    C. Treated water                
    D. Raw sewage
11. Which of the following groups of plants consist of green non-flowering and non-green non-flowering plants respectively?
    A. Sorghum and Mushroom
    B. Algae and puffball
    C. Pine and cedar
    D. Puftball and mushroom
12. The experiment shown below was made by Std 5 pupils during a science lesson.
    
    Which statement is true about the experiment if it was left outside in an open place on a sunny day?
    A. Coloured water in the tube was pushed down
    B. A lower reading on the scale was recorded
    C. Coloured water in the container was sucked in
    D. Level of coloured water in the container rose
13. Fish and birds are vertebrates. Which statement is CORRECT about both of them? They
    A. live in the water.
    B. lay fertilized eggs.
    C. have scales.
    D. are warm blooded.
14. Std 5 pupil of Huruma Primary School heated soil as shown below.
    
    Which component of soil was mostly affected?
    A. Humus.
    B. Air
    C. Water                            
    D. Living organism
15. Which one of the following is NOT a use of light?
    A. Photosynthesis
    B. Keeping off Pests
    C. Photography
    D. Warming
16. When choosing a method of separating solid mixtures, which one of the following is NOT a factor to consider?
    A. Size of the particles
    B. Magnetic nature of particles
    C. Color of the particles
    D. Temperature of the particles
17. The following are characteristics of vertebrates:
    i) They lay eggs
    ii) Bodies are covered with feathers
    iii) have moist skin with no scales
    iv) Have scales
    v) Have backbones
    Which characteristic describes both birds and reptiles?
    A. i, ii, iv
    B. ii, iv, v
    C. i, iv, v                           
    D. ii, iv, iii
18. Class six pupils set the experiment shown below during a science lesson.
    
    If the aspect demonstrated was the part of air used in burning, which mistakes did the pupils make?
    A. Using a small candle
    B. Using a plastic basin
    C. Making a hole on the glass
    D. Inverting the glass upside down
19. Which among the following drugs would cause hallucinations if abused?
    A. Cocaine
    B. Bhang
    C. Heroine                         
    D. Mandrax
20. The following are all ways of conserving water EXCEPT
    A. Recycling
    B. Using sprinkle irrigation
    C. Mulching
    D. Harvesting rain water
21. Which group consist of storage pest only?
    A. Rats, aphids, moles
    B. Rats, boring insects, white ants
    C. White ants, cutworms, rats
    D. Boring insects, rats, cutworms
22. When we exhale the part marked
    
    A. X inflates
    B. W becomes dome shaped
    C. Z expands
    D. Y moves upwards and inwards
23. The set below was used by class 5 pupils to investigate a certain aspect in the soil.
    
    Which aspect was being investigated?
    A. Soil drainage
    B. Soil capillarity
    C. Soil texture                    
    D. Soil profile
24. Germs cause diseases in our bodies. Which disease has the following signs and symptoms?
    i) Loss of weight
    ii) Prolonged cough
    iii) Chest pains
    iv) Passing out sputum with blood
    A. Malaria
    B. Typhoid
    C. Tuberculosis                 
    D. Cholera
25. The diagram below shows a water container being heated.
    
    Heat is transferred from point 1 to point 2 through
    A. convention and conduction
    B. conduction and convection.
    C. convention and radiation
    D. radiation and conduction
26. My Munyao was seen one morning giving his domestic animals solid drugs through the mouth. The method in practice was
    A. deworming
    B. dosing
    C. drenching                      
    D. medicining
27. Which one of the following is NOT true about pressure in liquids? It
    A. increases with depth
    B. is exerted in all direction
    C. is the same at the same level
    D. is greatest at the highest point
28. Which one of the following consists of external parasites only in animals?
    A. Flea and liver-flukes
    B. flea and tsetse fly
    C. Aphids and Cutworms
    D. Tapeworm and termite
29. Below are characteristics of clay soil.
    i) Has the best capillarity
    ii) Has the smallest air spaces
    iii) Does not spread easily
    iv) Spreads easily
    v) Cracks when dry
    vi) Best in drainage
    Which pair of characteristics is INCORRECT?
    A. i,v
    B. ii, iv
    C. i, iii                               
    D. iv, vi
30. During soil erosion, soil is carried away. Which among the following is NOT a factor influencing the process?
    A. Amount of rainfall
    B. Vegetation cover
    C. Type of soil
    D. Mining
31. Which one of the following is NOT a source of electricity?
    A. Bicycle dynamo
    B. Dam
    C. Diesel generator            
    D. Wind mill
32. Which group of plants given below has the same type of roots?
    A. Sugarcane
    B. Coconut acacia carrot
    C. Maize, onion, Lucerne
    D. Tomato, grass, groundnut
33. From the list of animals given below, which one represents amphibians, fish and reptiles respectively?
    A. frog, kingfish, snakes
    B. Salamander, shark, newts
    C. Gecko, Nile perch, lizard
    D. Newts, trauts, gecko
34. During germination of seeds, the parts that grow into a new root and shoot are collectively known as
    A. radicle
    B. cotyledon
    C. plumule                        
    D. embryo.
35. Which one of the following tools is in the same group as claw hammer while in use?
    A. Shovel
    B. Fishing line
    C. Lid opener                    
    D. Nutcracker
36. The following are effects of pests on crops EXCEPT?
    A. Transmission of diseases to consumers
    B. transmission of diseases to crops
    C. Facilitates robust growth
    D. Reduce quality of crops
37. Which one of the following MAINLY explains why an improved jiko conserves heat? The
    A. inner walls are metallic.
    B. outer casing is metallic
    C. inner walls are made of insulators.
    D. jiko has a conical shape.
38. The type of animal feed that provides specific nutrients to the livestock is
    A. silage
    B. pasture
    C. concentrate                   
    D. fodder
39. Which one of the following statement is NOT CORRECT about the diagram shown below?
    
    A. It is produced by the testis.
    B. It forms a zygote when it fuses with ovum.
    C. It is stored in the seminal vesicle.
    D. It is a male reproductive cell.
40. Which one of the following organs prevents the blood of the mother from mixing with that of the foetus?
    A. Uterus
    B. Umbilical cord
    C. Placenta                        
    D. Amniotic fluid
41. The MAIN reason why tyres of the tractor are big and broad is to
    A. increase the friction on the ground.
    B. decrease the pressure on the ground.
    C. make them heavier.
    D. make them last longer.
42. Which one of the following is CORRECTLY matched with its function?
    

    	PART	FUNCTION
    A	Skin	Removes excess water and salt
    B	Ileum	Absorption of water and mineral salts
    C	Trachea	Exchange of gases
    D	Uterus	Fertilization takes place here

43. The horny pad found in the herbivorous animals is for
    A. making the animal to look attractive
    B. preventing the animal from biting its tongue
    C. holding and cutting food
    D. turning plant material for proper chewing
44. Which one of the following methods in food preservation does NOT dehydrate food?
    A. Salting
    B. Smoking
    C. Sun drying
    D. Low temperature
45. Which one of the following statement CANNOT be used to define the term pollution?
    A. Harmful substance to animals
    B. To contaminate air
    C. Burying of organic matter in the soil
    D. Burying of inorganic matter in the soil
46. Inclined planes make work casier by three of the following EXCEPT
    A. increase the effort distance.
    B. reduce the amount of work done.
    C. decrease the slope.
    D. increase the slope.
47. The diagram below shows a solar panel.
    
    Which one of the following shows how energy is transformed?
    A. Heat - electricity
    B. Heat - Light
    C. Solar - Heat
    D. Solar – Electricity
48. A plastic cup was inverted over water as shown below.
    
    It was observed that water did not enter the cup because
    A. air is lighter than water.
    B. liquid takes the shape of the container.
    C. matter occupy space.
    D. water was not heated to expand.
49. Which one of the following is a physical change occurring in boys and girls?
    A. Production of female sex cells
    B. Enlargement of hips
    C. Production of male sex cells
    D. Production of sex cells
50. The tube-like passage of food that runs from the mouth to the anus is known as the
    A. bronchus
    B. oesophagus
    C. alimentary canal            
    D. small intestines

ANSWERS