The correct answer is D. (i) and (iii).
Burning charcoal and using diesel produces smoke which pollutes the air
sharon kalunda answered the question on July 30, 2019 at 09:34
- Which one of the following statements is TRUE about manures? They (Solved)
Which one of the following statements is TRUE about manures? They
A. Increase the growth of weeds
B. Release specific nutrients to the soil
C. Destroy micro-organism in the soil
D. Cause pollution of the soil.
Date posted: July 30, 2019. Answers (1)
- Which of the following pairs of practices will control ticks, fleas and lice in livestock?(Solved)
Which of the following pairs of practices will control ticks, fleas and lice in livestock?
A. Spraying and deworming.
B. Herding and dipping.
C. Deworming and rotational grazing.
D. Dipping and spraying.
Date posted: July 30, 2019. Answers (1)
- Which of the following is the CORRECT procedure that is used to obtain clear water from muddy water? (Solved)
Which of the following is the CORRECT procedure that is used to obtain clear water from muddy water?
A. Filtering and decanting.
B. Evaporating and filtering.
C. Decanting and filtering.
D. Evaporating and decanting.
Date posted: July 30, 2019. Answers (1)
- Soil becomes waterlogged due to (Solved)
Soil becomes waterlogged due to
A. Its color.
B. The size of its particles.
C. The absence of small animals in it.
D. The amount of air in it.
Date posted: July 30, 2019. Answers (1)
- Which of the following practices will conserve soil? (Solved)
Which of the following practices will conserve soil?
A. Using dry grass for mulching.
B. Burying vegetation on farms.
C. Ploughing along the slope.
D. Burying plastic materials.
Date posted: July 30, 2019. Answers (1)
- Which of the following consists of materials with a definite volume and definite shape? (Solved)
Which of the following consists of materials with a definite volume and definite shape?
A. Water, bottle. Stone.
B. Paper, pin, ink.
C. Kerosene. Cooking oil. Milk.
D. Sand. Flour, sugar.
Date posted: July 30, 2019. Answers (1)
- In an investigation. Equal amounts of soap was added to equal amounts of water samples W and Z obtained from different sources. The following observations...(Solved)
In an investigation. Equal amounts of soap was added to equal amounts of water samples W and Z obtained from different sources. The following observations were made:
(i) W formed lather.
(ii) Z formed suspended particles.
Which of the following statements about W and Z is NOT CORRECT?
A. W may have fewer minerals.
B. Z may form lather after boiling.
C. W can form scales in kettles.
D. Z wastes soap when washing.
Date posted: July 30, 2019. Answers (1)
- Which of the following practices LEAST pollutes the soil? (Solved)
Which of the following practices LEAST pollutes the soil?
A. Spraying crops to kill pests.
B. Burning plant wastes in the farm.
C. Disposing of animal wastes in the farm.
D. Burying plastics in the soil.
Date posted: July 30, 2019. Answers (1)
- The diagram below represents a simple electric circuit.
Which of the following energy transformations would take place when the switch is on?(Solved)
The diagram below represents a simple electric circuit.
Which of the following energy transformations would take place when the switch is on?
A. Chemical—> electrical—>heat—> light.
B. Electrical—> chemical-alight——> heat.
C. Chemical—> electrical—> light—> heat.
D. Electrical—> light—>chemical—> heat.
Date posted: July 30, 2019. Answers (1)
- For two masses X and Y. the mass of X was twice that of Y. The diagram below shows a set-up that was used to...(Solved)
For two masses X and Y. the mass of X was twice that of Y. The diagram below shows a set-up that was used to investigate how the two masses balance at positions Q. R. S and T on a seesaw.
Which of the following was a correct observation about the investigation?
Position of X --------------------Position of ---------------------------------Y Observation made
A. Q----------------------------------- T----------------------------------------- End P moved down
B. R -----------------------------------T----------------------------------------- End V moved up.
C. Q----------------------------------- S---------------------------------------- Seesaw balanced.
D. R----------------------------------- S------------------------------------------ End V moved down
Date posted: July 30, 2019. Answers (1)
- In which of the following are characteristics of cumulus and nimbus clouds CORRECTLY placed?(Solved)
In which of the following are characteristics of cumulus and nimbus clouds CORRECTLY placed?
Cumulus--------------------------- Nimbus
A. Dark grey in color---------------- Appear like bundles of cotton.
B. Mountainous in shape ---------------white in color.
C. White in color --------------------Mountainous in shape.
D. Rain bearing------------------------ Dark grey in color.
Date posted: July 30, 2019. Answers (1)
- Which of the following is a preventive measure against the spread of tuberculosis? (Solved)
Which of the following is a preventive measure against the spread of tuberculosis?
A. Clearing bushes around houses.
B. Boiling drinking water.
C. Proper disposal of human waste.
D. Living in a well-ventilated house.
Date posted: July 30, 2019. Answers (1)
- A person in the incubation period of HIV infection will show (Solved)
A person in the incubation period of HIV infection will show
A. Signs and symptoms but test negative
B. No signs and no symptoms but test positive
C. No signs, no symptoms and test negative
D. Signs, symptoms and test positive.
Date posted: July 30, 2019. Answers (1)
- The MAIN reason why mothers are encouraged to breast feed their infants is because breast milk (Solved)
The MAIN reason why mothers are encouraged to breast feed their infants is because breast milk
A. Boosts immunity of the infant
B. Is free from disease causing germs
C. Is at the right temperature for infants
D. Is easily digested by infants.
Date posted: July 30, 2019. Answers (1)
- The diagram below represents a model of the solar system prepared by class six pupils.
The mistake made in the model was(Solved)
The diagram below represents a model of the solar system prepared by class six pupils.
The mistake made in the model was
A. Using threads instead of wires
B. Placing a ball of clay next to the one representing the sun
C. Placing two balls of clay on one thread
D. Using balls of clay of different sizes. Each planet should be In its own thread.
Date posted: July 30, 2019. Answers (1)
- The diagram below shows an improvised rain gauge.
The collecting bottle should (Solved)
The diagram below shows an improvised rain gauge.
The collecting bottle should
A. Have the funnel sealed to its mouth
B. Be wide to collect enough water
C. Be placed above the ground
D. Be transparent for easy reading.
Date posted: July 30, 2019. Answers (1)
- A hilly area with deep channels is LIKELY to be experiencing (Solved)
A hilly area with deep channels is LIKELY to be experiencing
A. Sheet erosion
B. Gulley erosion
C. Rill erosion
D. Splash erosion.
Date posted: July 30, 2019. Answers (1)
- Which of the following pairs consists of diseases caused by lack of minerals in the diet? (Solved)
Which of the following pairs consists of diseases caused by lack of minerals in the diet?
A. Anaemia and rickets.
B. Kwashiokor and anaemia.
C. Marasmus and Kwashiokor.
D. Rickets and marasmus.
Date posted: July 30, 2019. Answers (1)
- Which of the following is the MAIN reason why eating bread after expiry date is discouraged? The bread could have (Solved)
Which of the following is the MAIN reason why eating bread after expiry date is discouraged? The bread could have
A. Lost nutrients
B. A bad taste
C. Some micro-organisms
D. Changed its colour.
Date posted: July 30, 2019. Answers (1)
- Which of the following pairs of food is preserved by smoking, salting and drying? (Solved)
Which of the following pairs of food is preserved by smoking, salting and drying?
A. Meat and mushrooms.
B. Beans and fish.
C. Mushrooms and beans.
D. Meat and fish.
Date posted: July 30, 2019. Answers (1)