Science - KCPE 2021 Prediction Set 2 (Questions and Answers)

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Social Studies - KCPE 2021 Prediction Set 2 (Questions and Answers)

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Fertilization in human beings takes place in the?
A. uterus
B. ovary
C. oviduct
D. cervix
A patient had the following signs and symptoms:
(i). severe stomachache
(ii). feeling weak and dizzy.
(iii). violent vomiting
(iv). Diarrhoea
Which of the following diseases was he suffering from?
A. Malaria
B. Cholera
C. Bilharzia
D. Typhoid
Which one of the following simple tools has the position of the load, effort and fulcrum in the same positions as a spade?
A. wheel barrow
B. claw hammer
C. spiral stairs
D. fishing rod
Which of the following pairs of liquids can be separated by decanting?
A. Water and spirit
B. Alcohol and water
C. Ink and paraffin
D. Diesel and petrol
Which component of air can be used in the preservation of soft drinks?
A. Carbon dioxide
B. Oxygen
C. Rare gases
D. Nitrogen
The following are adaptive characteristic of mammals. Which one is NOT?
A. Presence of a horny pad on the upper jaw in some herbivores
B. Shedding off of teeth to allow the permanent ones to grow
C. Presence of diastema in herbivores
D. Molars with ridged surfaces
A pupil put a plastic ruler in a glass of water as shown below

The ruler appeared bent because
A. of refraction of light
B. light does not need a medium of transmission
C. air is heavier than water
D. light is split into several colours
Which one of the following is NOT a sexually transmitted Infection?
A. Gonorrhoea
B. Syphilis
C. Chancroid
D. Bilharzia
Which one of the following shows the correct order of development of a fertilised egg?
A. Zygote   → Foetus  → Embryo → Baby
B. Embryo → Zygote → Foetus   → Baby
C. Zygote   → Embryo → Foetus   → Baby
D. Foetus → Zygote   → Embryo →   Baby
Which one of the following practices will NOT pollute the air?
A. Tobacco smoking
B. Emission from vehicles exhaust pipes
C. Burning vegetation cover
D. Controlling weeds by use of herbicides
Which of the following is NOT a sign of unhealthy crops?
A. Stunted growth
B. Low yields
C. Curled leaves
D. Discoloured leaves
The BEST meal for a lactating mother should be
A. rich in fibre and water only
B. fried and not steamed or boiled
C. more of carbohydrates than proteins
D. rich in calcium and phosphorus
Which of the following practices cannot help in conserving soil?
A. Ploughing across the contours
B. Planting trees on hilly areas
C. Digging of terraces
D. Applying mulches
Which one of the following groups of animals have moist skin, breathe by means of lungs and lays eggs in water?
A. Tilapia, salamander lizard
B. Frog, newt, toad
C. Chameleon, lizard, trout
D. Spiny-anteater, tilapia lizard
Acid rain is usually formed when rain water mixes with
A. Carbon monoxide and Sulphur monoxide
B. Sulphur monoxide and Carbon monoxide
C. Sulphur dioxide and Carbon dioxide
D. Sulphur dioxide and Carbon monoxide
The rollers used when moving a heavy load help in
A. making the load more streamlined
B. reducing the amount of work to be done
C. increasing the surface in contact
D. reducing the force that opposes motion
Which one of the following adaptations helps both birds and fish in movement?
A. webbed feet
B. good eye sight
C. streamlined body
D. presence of fins
Below is a diagram of a simple circuit

Which one of the following statements is true about the circuit?
A. The bulb did not light
B. The bulb lit dimly
C. The bulb blew up
D. The bulb kept blinking
Which one of the following is NOT advisable while handling electricity?
A. Fitting of lighting arresters on tall buildings
B. Do not overload sockets
C. Switching off lights with dry hands
D. Inserting wires in the sockets
Which one of the following is NOT a commended way of controlling crop pests?
A. Scaring
B. Hand picking
C. Poisoning
D. Pruning
Blood that flows into the right auricle of the heart is carried by the
A. aorta
B. vena cava
C. pulmonary artery
D. pulmonary vein
A pupil dropped pieces of paper above an open fire. Which of the following statements is TRUE about what was observed?
A. The papers fell in the open fire and got burned
B. Convectional currents in the air blew them upwards
C. Radiation of heat carried the papers away
D. The weight of cold air helped in blowing the papers upwards
Clouds which have flat bases are also known to be
A. mountainous
B. dark grey
C. rain bearing
D. lying low in the sky
Which is the sixth planet in the solar system?
A. Uranus
B. Pluto
C. Neptune
D. Saturn
Which one of the following is a social effect of drug abuse?
A. Poor health of the unborn
B. Loss of consciousness
C. Dropping out of school
D. Impaired judgement
Which of the following is a disadvantage of friction?
A. Wearing out surfaces
B. Helps in sharpening
C. Makes movement possible
D. Enables us to clean surface
The diagram below shows change of state in matter

Which pair represents processes that occur due to an increase in temperature?
A. Q and R
B. R and S
C. S and T
D. T and Q
The diagram shows an experiment done to investigate a certain property of matter

Which of the following properties of matter was being investigated?
A. Solids contract on cooling
B. Liquids expand when heated
C. Matter exchanges its state when cooled
D. Gases decrease in volume when cooled
Which one of the following livestock parasites affects the brain of sheep?
A. Lungworm
B. Roundworm
C. Liver fluke
D. Tapeworm
The following are disadvantages of hard water EXCEPT
A. wasting soap during laundry
B. discolouring the inside of kettles
C. discolouring white garments
D. providing additional minerals to the body
Animals depend on plants
A. for protection
B. for manure
C. for support
D. for oxygen
Plants that grow in wet areas have all the following adaptations except
Flexible stems
B. Thin cuticles on the leaves
C. Waxy shiny leaves
D. Folded leaves
Which one of the following is the third stage in the process of birth?
Widening of the cervix
B. Contraction of the uterine walls
C. Breaking of the amnion sac
D. Release of the after birth
To conserve energy by using it sparingly, one should do all the following except
switch off lights when not in use
B. share transport to the same destination
C. use an improved jiko for cooking
D. construction of smooth road net-work
The fall of an object is caused by
gravity B. volume
C. presence D. mass
The diagram below represents an investigation on soil

The set up was heated gently for some time. Which one of the following components of soil was being investigated?
A. Air in soil
B. Living things in soil
C. Organic matter in soil
D. Moisture in soil
Which one of the following is NOT a source of electricity?
A.Batteries
B. solar panels
C. bicycle dynamos
D. water dam
Which one of the following is NOT a factor influencing soil erosion?
A. Slope of the land
B. Type of soil
C. Amount of rainfall
D. Flowing waters
Which one of the following animals does NOT reproduce by laying eggs?
A. Shark
B. Salamander
C. Whale
D. Ostrich
Hard water can easily be made soft by
A. adding table salt
B. leaving in the sun to evaporate
C. boiling then leaving to cool down
D. mixing with water from other sources
The diagram below represents an investigation on energy.

The pupils must have been investigating
A. transformation of energy in an electromagnet
B. the simple lighting process of a bulb
C. ways of conserving electric energy
D. ways of generating electricity using dry cells
A child who easily becomes dizzy, gets tired easily, has white palms and nails should be feed on
A. proteins such as bean and eggs
B. carbohydrates such as cereals
C. foods rich in iron
D. fibre and water to help in digestion of food
How many incisors does a child have on the upper jaw?
A. Two
B. Three
C. Four
D. Six
Which one of the following is NOT a common communicable disease?
A. Tetanus
B. Tuberculosis
C. Malaria
D. Cholera
Which of the following components of blood is correctly matched with its functions
A. White blood cells - helps in clotting
B. Red blood cells-transports hormones in the body
C. Plasma - transports food nutrients
D. Platelets - transports oxygen in the body

An air and a liquid thermometers were put in the same place on a hot day. Which one of the following shows what happened?

	Air Thermometer	Liquid Thermometer
A.	Level of water rose	Level of water dropped
B.	Level of water dropped	Level of water rose
C.	No change to the water level	Level dropped then rose
D.	Level rose then dropped	No changes to the level

The following are advantages of using organic manures. Which one is NOT? They
A. are bulk to transport
B. improve the soil structure
C. benefit the soil for a long time
D. help to restore the lost nutrients in the soil
Which of the following happens last during germination?
A. Growth of the shoot
B. Bursting of testa
C. Growth of the radicle
D. Absorption of water
Where does fertilisation take place in green flowering plants?
A. Flowers
B. Stigma
C. Ovules
D. Ovary
Which one of the following factors does NOT affect floating and sinking?
A. Shape
B. Size
C. Material
D. Weight