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KCPE PAST PAPERS, EXAMS

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KCPE PAST PAPERS 2006: SCIENCE QUESTIONS AND ANSWERS [25-50]

28/8/2019

1 Comment

 

KCPE PAST PAPERS 2006: SCIENCE QUESTIONS AND ANSWERS [25-50]

26.

A pupil investigating a certain aspect of pressure in a liquid used a setup shown in the diagram below

Picture
What conclusion could the pupil make from the investigation?
  • A. Air exerts pressure on the surface of a liquid
  • B. Pressure in a liquid increases with depth
  • C. Pressure in a liquid is equal at the same depth
  • D. Pressure in a liquid is exerted on the sides only
27.

The temperature at which a substance freezes is the same temperature at which the substance

  • A. Condenses
  • B. Evaporates
  • C. Boils
  • D. Melts
28.

Which one of the following consists of only substances that have no definite shape but have definite volume?

  • A. Stone, kerosene, carbon dioxide
  • B. Oil, toothpaste, glue
  • C. Clay, flour, cement
  • D. Nitrogen, oxygen, water vapour
29.

The diagram below represents a setup that can be used to demonstrate heat transfer in air

Picture
​For the demonstration to work a burning candle must be placed at
  • A. P
  • B. Q
  • C. R
  • D. S
30.

The percentage of the component of air that is fixed by bacteria in root nodules to make nutrients for the plant is

  • A. 0.03%
  • B. 0.97%
  • C. 21%
  • D. 78%
31.

Which one of the following is the last step when separating a mixture of sand and salt?

  • A. Dissolving
  • B. Filtering
  • C. Evaporating
  • D. Decanting
32.

The diagram below shows a stone being thrown using a catapult

Picture
The form of energy in the rubber band before the stone is released is
  • A. Kinetic
  • B. Potential
  • C. Chemical
  • D. Sound
33.

Which one of the following is CORRECT about a solar heater? A solar heater changes

  • A. Heat energy to electrical energy
  • B. Light energy to electrical energy
  • C. Chemical energy to heat energy
  • D. Light energy to heat energy
34.

Tall buildings are fitted with sharp pointed metal rods at their tops and connected to the ground. The rods are for

  • A. Protecting the buildings against lightning
  • B. Protecting electricity users from being electrocuted
  • C. Fixing aerials for radios and televisions
  • D. Allowing expansion of walls during hot weather
35.

Which one of the following is TRUE about the rainbow? It forms

  • A. Before heavy rainfall
  • B. When it rains while the sun is shining
  • C. When the sky is covered with thick clouds
  • D. When it rains in the afternoon
36.

Which one of the following energy transformations take place when a radio that uses cells is operating?

Picture
37.

Which one of the following sources of energy DOES NOT contain chemical energy?

  • A. Car battery
  • B. Bicycle dynamo
  • C. Food
  • D. Firewood
38.

Heat reaches the feet of a person seated by the side of a fire by

  • A. Conduction and convection
  • B. Radiation only
  • C. Convection only
  • D. Radiation and convection
39.

Which one of the following DOES NOT pollute the air?

  • A. Exhaust gases from aeroplanes
  • B. Smoke from burning charcoal
  • C. Smoke from burning domestic wastes
  • D. Gases from decaying animals
40.

The main reason why it is advisable to spray crops in the direction of wind is to avoid

  • A. The chemicals getting into contact with the skin 
  • B. Wastage of chemicals
  • C. Polluting the air
  • D. Inhaling the chemicals
41.

The following signs and symptoms were observed in a certain child

  • (i) Thin and weak
  • (ii) Wrinkled face
  • (iii) Pot bellied
  • (iv) Hungry and crying a lot
The child was most likely suffering from
  • A. Anaemia
  • B. Rickets
  • C. Kwashiokor
  • D. Marasmus
42.

Which one of the following groups consists only of foodstuffs that protect the body against diseases?

  • A. Lemon, cabbage, carrot
  • B. Beans, groundnuts, fish
  • C. Maize, potatoes, rice
  • D. Meat, oranges, spinach
43.

The purpose of salt in food preservation is to

  • ​A. Remove water
  • B. Add flavour
  • C. Remove air
  • D. Lower the temperature
44.

The most likely reason why some expectant mothers crave for soil is to

  • A. Increase breast milk production after delivery
  • B. Increase appetite
  • C. Help in digestion of food
  • D. Provide sufficient mineral nutrients
45.

Which one of the following levers when in use has the position of the effort between the load and the fulcrum?

  • A. Spade
  • B. Wheelbarrow
  • C. Claw hammer
  • D. Crowbar
46.

A single fixed pulley

  • A. Changes direction of force
  • B. Increases effort distance
  • C. Reduces effort required
  • D. Reduces load distance
47.

The diagram below represents a tyre of a vehicle

Picture
The purpose of treads in the vehicle tyre is to
  • A. Make them last longer
  • B. Increase grip on the road
  • C. Reduce surface area
  • D. Make them lighter
48.

The following activities are carried out when making a beam balance but not in the correct order

  • (i) Suspend the arm to find balance point and mark
  • (ii) Make a base, a stand and the arm
  • (iii) Fix the stand and the arm to the base
  • (iv) Suspend tins on both sides of the arm
Which one of the following is the CORRECT order in which the activities are carried out?
  • A. (iii) (i) (ii) (iv)
  • B. (ii) (i) (iii) (iv)
  • C. (iii) (ii) (iv) (i)
  • D. (ii) (i) (iv) (iii)
49.

Which one of the following statements is CORRECT about a stone thrown a few metres directly upwards by a passenger in a moving lorry? The stone will fall

  • A. In front of the person
  • B. Behind the person
  • C. On the person
  • D. Behind the lorry
50.

The diagram below represents a certain weed

Picture
​The weed is
  • A. Pigweed
  • B. Mexican marigold
  • C. Black jack
  • D. oxalis

Also Read

  • KCPE 2006 PAST PAPERS, ANSWERS AND REPORTS
  • FREE 2006 KCPE ANSWERS - KCPE PAST PAPERS
  • FREE KCPE PAST PAPERS: KISWAHILI 2018 ANSWERS
  • KCPE 2007 PAST PAPERS, ANSWERS AND REPORTS
aNSWERS
2006_answers_science_26-50.pdf
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1 Comment
Jane kimonyi
6/11/2022 16:10:22

Let us cooperate

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