KCPE PAST PAPERS 2011: SCIENCE QUESTIONS AND ANSWERS [QNS 01-25]

​KCPE PAST PAPERS 2011: SCIENCE QUESTIONS AND ANSWERS [QNS 01-25]

Question 01:

Which one of the following diseases is a child immunized against at birth, sixth week, tenth week and fourteenth week after birth?

• A. Measles.
• B. Yellow fever.
• C. Tuberculosis.
• D. Poliomyelitis.

Question 02:

Which one of the following is advisable when spraying with chemicals?

• A. Spraying when the temperatures are very high.
• B. Wearing a gas mask when spraying.
• C. Spraying against the direction of wind.
• D. Washing hands before spraying.

Question 03:

Which one of the following pairs consists only of omnivorous animals?

• A. Chimpanzee and pig.
• B. Chimpanzee and hyena.
• C. Hippopotamus and crocodile.
• D. Hippopotamus and pig.

Question 04:

The reason why some plants have thick waxy cuticle is to

• A. store manufactured food
• B. reduce water loss
• C. allow breathing to take place
• D. trap more sunlight.

Question 05:

Which one of the following consists of groups of food that mainly contain fats?

• A. Avocado, groundnuts, coconut.
• B. Maize, coconut, beans.
• C. Irish potatoes, groundnuts, maize.
• D. Irish potatoes, beans, avocado.

Question 06:

The first step in obtaining salt from a mixture of salt solution and pieces of copper wire is

• A. filtering
• B. winnowing
• C. using a magnet
• D. evaporating to dryness.

Question 07:

​Substances that have definite mass and volume are

• A. solids only
• B. solids and liquids
• C. liquids only
• D. liquids and gases.

Question 08:

A lactating mother should feed on a diet rich in calcium and phosphorous in order to

• A. enable her to regain strength
• B. replace blood lost during birth
• C. improve the immunity of the baby
• D. strengthen the bones of the baby.

Question 09:

Which one of the following is the most effective preventive measure against the spread of sexually transmitted infections amongst the youth in schools?

• A. Seeking medical attention.
• B. Use of condoms.
• C. Circumcision.
• D. Abstinence.

Question 10:

Which one of the following pairs consist only of inclined planes?

• A. Wheelbarrow and see-saw.
• B. Road winding up a hill and staircase.
• C. Ladder and see-saw.
• D. Wheelbarrow and staircase.

Question 11:

The percentage of the component of air in the atmosphere used by legumes to make proteins is

• A. 78%
• B. 21%
• C. 0.97%
• D. 0.03%.

Question 12:

The following are signs and symptoms of anaemia EXCEPT

• A. breathlessness
• B. pale white eyes
• C. muscle wastage
• D. tiredness.

Question 13:

Which one of the following consists only of a pair of animals that have constant body temperature?

• A. Shark and whale.
• B. Tortoise and ostrich.
• C. Shark and bat.
• D. Bat and ostrich.

Question 14:

The following are some activities carried out in an experiment to investigate drainage in soil.

(i) Put equal amounts of three types of soil in separate funnels.
(ii) Place the funnels on the mouth of each of the three plastic bottles.
(iii) Put cotton wool in the neck of each funnel.
(iv) Pour equal amounts of water on each type of soil at the same time.
Which one of the following is the CORRECT order of the activities?

• A. (i), (ii), (iii), (iv).
• B. (iii), (ii), (i), (iv).
• C. (i), (iii), (ii), (iv).
• D. (ii), (i), (iii), (iv).

Question 15:

Which one of the following methods of soil conservation can be used to control splash erosion?

• A. Making terraces.
• B. Building gabions.
• C. Planting cover crops.
• D. Practising contour farming.

Question 16:

The effects of heat on ice that make it change to gaseous form are

• A. freezing and condensing
• B. melting and evaporating
• C. condensing and evaporating
• D. freezing and melting.

Question 17:

The chart below represents a simple classification of crops

Which one of the following crops are CORRECTLY represented by W, X, Y and Z?

Question 18:

The following is a feeding relationship that was observed in a certain habitat.

Maize grains --> Rats --> K --> Hawks
Which one of the following is CORRECTLY represented by K?

• A. Frogs.
• B. Snakes.
• C. Weaver birds.
• D. Lizards.

Question 19:

Which one of the following pests is CORRECTLY matched with the part of the crop it attacks?

                  Pest                  Part of crop attacked

• A. Aphids                           Grains.
• B. Stalkborer                     Leaves.
• C. Cutworm                       Stems.
• D. Weevils                         Leaves.

Question 20:

Which one of the following diagrams represents what is observed when water is poured into a tin can with holes of the same size at different depths?

Question 21:

The diagram below represents a thermometer used to measure temperature of a certain liquid

From the thermometer, the temperature of the liquid is

• A 30°C
• B 27°C
• C 20°C
• D 10°C.

Question 22:

The diagram below represents a set-up that was used to demonstrate a certain aspect of heat

The aspect demonstrated was

• A. conduction in different solids
• B. Convection in water
• C. conduction in water
• D. expansion in different solids.

Question 23:

To save a person who has touched an exposed electric, wire, one should

• A. push the person away using dry wood
• B. pull the person from the wire
• C. pour cold water on the person
• D. shake the person vigorously.

Question 24:

In a certain investigation pupils heated different materials and recorded their findings.

​Which one of the following CORRECTLY shows the pupils’ findings?

Question 25:

Which one of the following statements is NOT TRUE about friction. Friction is a force that

• A. makes work difficult
• B. is reduced by treading tyres
• C. can be used to produce fire
• D. affect the speed of moving objects.

MORE STD 8 REVISION RESOURCES

• https://drive.google.com/open?id=1cdxLC-nRPWN1S47IUQNNEB81Aoar4AaT

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