KCPE PAST PAPERS 2007: SCIENCE QUESTIONS AND ANSWERS [QNS 1-25]

​KCPE PAST PAPERS 2007: SCIENCE QUESTIONS AND ANSWERS [QNS 1-25]

1.

Which one of the following is NOT CORRECTLY matched with its function?

	​PART	FUNCTION
A.	​Oesophagus	​passage of food
B.	​Stomach	​mixes food with enzymes
C.	Small intestine	​complete digestion of food
D.	​Large intestine	​absorbs digested food

2.

Which one of the following is NOT A CORRECt statement about reproduction in human beings?

• A. Fertilization takes place in the uterus
• B. The zygote get implanted in the wall of the  uterus
• C. The blood of the mother and foetus do not mix
• D. Menstruation stop during pregnancy

3.

The blood vessel through which deoxygenated blood flows to the heart is the

• A. Aorta
• B. Pulmonary artery
• C. Vena cava
• D. Pulmonary vein

4.

Which one of the following changes take place during adolescence in boys only?

• A. Fast body growth
• B. Growth of pubic hair
• C. Chest and shoulders become broader
• D. Releasing of sex cells

5.

Which of the following statements is TRUE about HIV and AIDS?

• A. All HIV positive people have AIDS
• B. During the window stages a person may test negative 
• C. It can be transmitted by sharing utensils
• D. It is not spread during the asymptomatic phase

6.

Which one of the following is NOT a communicable disease?

• A. Whooping cough
• B. Tetanus
• C. Tuberculosis
• D. Measles

7.

A child suffering from kwashiorkor should be given a diet rich in

• A. Carbohydrates
• B. Fats
• C. Vitamins
• D. Proteins

8.

Wearing protective clothing while walking in stagnant water can prevent one from contracting

• A. Bilharzia
• B. Typhoid
• C. Typhoid and cholera
• D. Bilharzia and cholera

9.

Which of the following statement is CORRECT according to immunization schedule of infacts?

• A. The first dose of polio is given at 6 weeks
• B. DPT vaccine is given at birth and 10 weeks
• C. DPT and measles vaccine are given at 14 weeks
• D. Polio and BGG vaccines are given at birth

10.

Planets appear bright because they

• A. Reflect light
• B. Produce light
• C. All twinkle
• D. Are large

11.

A pupil gave the following reasons as to why dairy cattle are given commercial feeds.

• ​i. To increase milk production
• ii. Given only to cattle under zero grazing
• iii. To supplement other feeds
• iv. Only when folder crops and pasture are not available.

Which two reasons are CORRECT?

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

12.

The diagram below represent a set-up that is used to lift load.

​To investigate the force required to lift the load a spring balance must be at

• A. P
• B. Q
• C. R
• D. S

13.

The following are some methods of preserving foods:

• i. Smoking
• ii. Drying
• iii. Freezing
• iv. Salting
• v. Canning

Which method are traditional?

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

Which one of the following pairs of machines belongs to the same group as a ladder?

• A. Claw hammer and bottle opener
• B. Spade and fishing rod
• C. Staircase and road winding uphill
• D. Handcart and wheelbarrow

15.

The reason why an ordinary jiko without a clay lining is not recommended for use is because

• A. It pollutes the environment
• B. Of the large amounts of charcoal used
• C. It takes a long time when cooking
• D. It gets too hot to hold

16.

The following are liquids added together in glass bottles labelled P,Q,R and S by some pupils.

• P- kerosene and cooking oil
• Q- water and cooking oil
• R-milk and water
• S- milk and kerosene

 Which glass bottle contains liquids that cannot be separated by decanting?

• A. P
• B. Q
• C. R
• D. S

17.

Which one of the following plants is green and non-flowering?

• A. Mould
• B. Onion
• C. Sisal
• D. Moss

18.

Which one of the following consists of a pair of storage pests?

• A. Rats and aphids
• B. White ants and rats
• C. Aphids and cutworms
• D. White ants and cutworms

19.

Which one of the following is a possible food chain that could be found in a grassland inhabited by hawks, frogs, snakes, mice and grasshoppers?

• A. Grass----- grasshopper ------frogs----- snakes
• B. Grass -----grasshoper-----frogs------mice
• C. Grass-----snakes----mice----hawks
• D. Grass------ grasshopper -----hawks---snakes

20.

Which one of the following is TRUE for both chickens and frogs? Both

• A. Have a constant body temparature
• B. Have scales
• C. Breath by lungs
• D. Feed on insects only

21.

Which one of the following is NOT a rotational method of grazing?

• A. Paddocking
• B. Herding
• C. Tethering
• D. Strip

22.

Birds which feed on nectar have

• A. Short pointed beaks
• B. Strong curved beaks
• C. Long slender pointed beaks
• D. Long slender curved beaks

23.

In which one of the following practices is water re-used?

• A. Using dirty water from the kitchen for watering plants
• B. Collecting rainwater from the roof for domestic uses
• C. Getting clean water from dirty water by boiling and cooling the steam
• D. Storing water in dams to be used in irrigation

24.

The texture of a soil type depends on the

• A. Amount of water in the soil
• B. Organic matter in the soil
• C. Amount of mineral particles in the soil
• D. Size of soil particles

25.

The component that makes up 0.97% of air is used in

• A. Rusting
• B. Preservatiuon of soft drinks
• C. Electic bulb
• D. Making proteins

ANSWERS

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