KCPE PAST PAPERS 2009: SCIENCE QUESTIONS AND ANSWERS [QNS 1-25]

KCPE 2009 SCIENCE QUESTIONS AND ANSWERS

Question 01:

Which of the following components of blood is involved in clotting after an injury?

• A plasma
• B white blood cells
• C red blood cells
• D platelets

Question 02:

which one of the following shows the CORRECT order of the blood flow in the heart?

• A vena cava-->pulmonary artery-->pulmonary vein-->aorta
• B pulmonary artery-->vena cava-->pulmonary vein-->aorta
• C pulmonary vein-->aorta-->pulmonary artery-->vena cava
• D aorta-->pulmonary vein-->vena cava-->pulmonary artery

Question 03:

which one of the following pairs consists only of social effects of drug abuse?

• A rape and truancy
• B lack of concentration and addiction
• C accidents and withdrawal
• D impaired judgment and loss of consciousness

Question 04:

which one of the following statements is TRUE about the incubation stage of HIV infection?

• A if HIV is carried out, the result is negative
• B this is the first stage of infection
• C there are no visible signs
• D The body cannot fight diseases

Question 05:

which one of the following is NOT a CORRECT statement about a foetus?

• A receives oxygen through placenta
• B the blood of the mother and that of the foetus mix
• C Receives food substances from the mother's blood
• D waste products are removed through the placenta

Question 06:

which one of the following pairs of infectious consists only of those that are sexually transmitted?

• A chancroid and HIV
• B gonorrhoea and bilharzia
• C syphilis and typhoid
• D gonorrhoea and tuberclosis

Question 07:

a ruler placed slanting and partially immersed in water appears bent because light;

• A from that part of the ruler under water is reflected
• B from that part of the ruler under water is refracted
• C from that part of the ruler under water is scattered
• D travels in a straight line in the same medium.

Question 08:

the diagram below represents a set-up that can be used to demonstrate a certain aspect of heat

The aspect demonstrated is that;

• A solids melt when heated
• B metals expand when heated
• C solids conduct heat
• D Metals bend when heated

Question 09:

which one of the following is a storage pest?

• A weaver bird
• B white ant
• C cut worm
• D aphid

Question 10:

which one of the following stores food in the same part of the plant as Irish potato?

• A carrot
• B sweet potato
• C sugarcane
• D cassava

Question 11:

the embryo of a seed is made up of?

• A plumule and testa
• B cotyledon and plumule
• C radicle and plumule
• D cotyledon and radicle

Question 12:

the following are some characteristics of certain animals

(i) body covered with scales
(ii) lay eggs
(iii) body temperature vary with the surroundings
(iv) breathe through lungs
Which of the following pairs of animals has ALL the characteristics listed?

• A turtle and sheep
• B lizard  and tortoise
• C tilapia and frog
• D elephant and platypus

Question 13:

which one of the following is the main constituent of a balanced diet obtained by animals which feed on lucerne?

• A carbohydrates
• B protein
• C vitamins
• D minerals

Question 14:

which one of the following is NOT an example of rotational grazing?

• A strip
• B paddocking
• C  tethering
• D herding

Question 15:

the following are activities carried out when modelling the solar system, but not in their correct order.

(i) draw circles on manilla paper to show orbits
(ii) model the planets and the sun using clay
(iii) put name tags and models of planets and the sun
(iv) fix models of planets to orbits and the model of the sun at the centre
(v) paste manilla paper on the soft board
Which one of the following is the CORRECT order in which the activities are carried out?

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

Question 16:

the following are some uses of components of air:

(i) manufacture of  electric bulbs
(ii) support burning
(iii) manufacture of soft drinks
(iv) germination of seeds
(v) putting out fires
Which of the uses are for carbon dioxide?

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

Question 17:

a certain machine when in use, can work with load, effort and fulcrum at different positions as shown in the diagrams I and II.

The machine is a

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

Question 18:

the following are methods of separating mixtures:

(i) picking
(ii) filtering
(iii) decanting
(iv) sieving
Which two methods are suitable for separating a mixture of water and sand?

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

Question 19:

which one of the following is a CORRECT food chain?

• A grass--> rabbit-->eagle-->>leopard
• B maize-->grasshopper-->lizard-->snake
• C grass-->grasshopper-->eagle-->rabbit
• D kales-->aphids-->weaverbird-->rabbit

Question 20:

when pieces of paper are dropped above a fire, they rise. This is because:

• A heat makes the paper lighter than air
• B paper expands when heated
• C Hot air carries the paper upwards
• D heat from the fire carries the paper upwards

Question 21:

The diagram below represents a set-up that was used to demonstrate a certain property of matter

The property demonstrated was

• A air occupies space
• B water exerts pressure
• C Air has mass
• D water occupies space

Question 22:

which one of the following materials allow light to pass but one cannot see through it clearly?

• A frosted glass
• B mirror
• C clean water
• D milk

Question 23:

which one of the following is the BEST method of managing plastic waste?

• A burning
• B burying
• C recycling
• D reusing

Question 24:

Which one of the following diseases can be prevented by wearing gumboots and gloves?

• A typhoid
• B malaria
• C bilharzia
• D cholera

Question 25:

which one of the following practices is an advantage to the soil?

• A ploughing across the contours
• B disposal of vegetable refuse
• C burning of crop remains
• D use of herbicides

MORE STD 8 REVISION RESOURCES

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

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