KCPE PAST PAPERS 2015: SCIENCE QUESTIONS AND ANSWERS [QNS 26-50]

KCPE PAST PAPERS 2015 SCIENCE QUESTIONS AND ANSWERS

Question 26.

The most effective control measure against 111V transmission from mother to child is

• A. public awareness on HJV/AIDS
• B. voluntary counselling and testing
• C. mass education
• D. campaign through various media.

Question 27.

The surrounding of an organism is described as its

• A. environment
• B. home
• C. shelter
• D. habitat.

Question 28.

The diagram below shows parts of the human heart.

Blood from the legs enters the heart through the blood vessel labelled

• A. V
• B. W
• c. X
• D. Y

Question 29.

Which one of the following is the most commonly abused drug in Kenya?

• A. Khat.
• B. Glue.
• C. Tobacco.
• D. Alcohol.

Question 30.

The following materials can be used to construct a certain weather instrument:

(i) small plastic bottle
(ii) large plastic bottle
(iii) manila paper
(iv) cello tape.
The weather instrument likely to be constructed is

• A. air thermometer
• B. wind vane
• C. rain gauge
• D. liquid thermometer.

Question 31.

Which one of the following uses of water is not practised on the farm?

• A. Mixing chemicals.
• B. Washing toilet.
• C. Cleaning implements.
• D. Irrigation.

Question 32.

An example of a lever in which the load is between the effort and fulcrum is

• A. wheelbarrow
• B. spade
• C. claw hammer
• D. crowbar.

Question 33.

Which one of the following statements describes hard water?

• A. Contains less mineral salts.
• B. Lathers easily.
• C. Boiled water.
• D. Discolours clothes.

Question 34.

The following are some characteristics of plants:

(i) thin cuticle
(ii) silvery hairs
(iii) flexible stems
(iv) more stomata on lower leaf surface
(v) air sacs
Which pair of characteristics is for plants adapted to wet areas?

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

Question 35.

Which one of the following is an example of a harmful animal?

• A. Turkey.
• B. Donkey.
• C. Termite.
• D. Dog.

Question 36.

The following are misconceptions about HIV and AIDS EXCEPT

• A. HIV and AIDS is a curse
• B. sex with a young girl cures HIV and AIDS
• C. HIV and AIDS has no cure
• D. all thin people have AIDS.

Question 37.

Which one of the following is the least effective preventive measure against the spread of typhoid?

• A. Washing vegetables and fruit.
• B. Washing hands after visiting a toilet.
• C. Proper use of latrines and toilets.
• D. Draining stagnant water.

Question 38.

During a thunderstorm, pupils were observed

(i) sheltering under the verandah
(ii) wearing red jackets in a classroom
(iii) playing on the football pitch
(iv) lying on the ground in the classroom.
In which pair of observations are the pupils more likely to be struck by lightning?

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

Question 39.

In which one of the following activities is renewable energy in use?

• A. Driving a petrol powered car.
• B. Using a windmill to grind maize.
• C. Cooking on energy saving charcoal stove.
• D. Using coal to generate electricity.

Question 40.

Which one of the following mixtures can be separated by either picking or sieving?

• A. Maize and beans.
• B. Rice and sorghum.
• C. Maize and millet.
• D. Green grams and peas.

Question 41.

Which one of the following is a way of maintaining simple tools?

• A. Cleaning before use.
• B. Storing in a safe place.
• C. Using a tool for several purposes.
• D. Oiling.

Question 42.

The following are some of the materials that were provided to pupils for making a beam balance:

(i) two tins of the same size
(ii) wires
(iii) plank of wood
(iv) nails
Which one of the following materials was missing?

• A. Stand.
• B. Strings.
• C. Scale.
• D. Pins.

Question 43.

Which one of the following is an effect of air pollution on non-living things?

• A. Impairs visibility.
• B. Damages iron sheets.
• C. Causes wilting.
• D. Interferes with photosynthesis.

Question 44.

To model the solar system, the following materials can be used:

(i) soft board
(ii) clay
(iii) pins
(iv) glue
(v) manila paper.
Which one of the following materials would be most suitable to use instead of the pins?

• A. Wax.
• B. Plasticine.
• C. Pieces of barbed wire.
• D. Pieces of cello tape.

Question 45.

Which one of the following statements is true about splash erosion?

• A. Forms shallow trenches.
• B. Caused by wind and water.
• C. Removes a thin layer of soil.
• D. Occurs below roofs of buildings.

Question 46.

Which one of the following practices is the most effective in prevention of food poisoning from packed foods?

• A. Washing hands before handling it.
• B. Checking the expiry date.
• C. Proper storage
• D. Proper cooking.

Question 47.

The diagram below shows a set-up to demonstrate a certain aspect of matter

Which one of the following is likely to occur after some time?

• A. Air gets into the balloon.
• B. Heat enters the balloon.
• C. Water enters into the bottle.
• D. Balloon contracts.

Question 48.

The following statements are true about energy except

• A. it causes motion
• B. it can be conserved
• C. it changes from one form to another
• D. is the ability to do work.

Question 49.

Which one of the following pairs of materials is suitable for demonstrating the formation of a rainbow when using the sun as a source of light?

• A. Ruler and mirror.
• B. Mirror and water.
• C. Mirror and white screen.
• D. Glass container and mirror.

Question 50.

Which one of the following materials will not form a shadow when light is shone on it?

• A. White paper.
• B. Mirror.
• C. Glass of a lamp.
• D. Sheet of Aluminium.

MORE STD 8 REVISION RESOURCES

• FULL SET EXAMS FROM PLAYGROUP TO STANDARD 8
  https://drive.google.com/open?id=1cdxLC-nRPWN1S47IUQNNEB81Aoar4AaT
• DOWNLOAD MORE KCPE 2015 PAST PAPERS AND MARKING SCHEMES​https://www.atikaschool.org/kcpe-past-papers-and-answer/kcpe-2015-past-papers-questions-answers-and-reports

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