The correct answer is C. (i) and (iv).
Oxygen gas is the gas which occupies 21% and it is responsible for germination and burning.
sharon kalunda answered the question on July 29, 2019 at 14:50
- The diagram below represents a set-up that is used to demonstrate a certain aspect of matter
The aspect investigated is(Solved)
The diagram below represents a set-up that is used to demonstrate a certain aspect of matter
The aspect investigated is
A. Radiation
B. Convection
C. Conduction
D. Expansion.
Date posted: July 29, 2019. Answers (1)
- Which of the following pairs of objects is correctly classified into magnetic and non-magnetic?(Solved)
Which of the following pairs of objects is correctly classified into magnetic and non-magnetic?
Magnetic --------------------- non-magnetic
A. Glass sheet------------------- Tin can.
B.Steel needle ------------------ Pencil lead.
C.Copper coin -------------------- Steel wool.
D.Razor blade -------------------- Staple pin.
Date posted: July 29, 2019. Answers (1)
- In which of the following pairs of levers is the load, effort and fulcrum likely to be in similar positions when in use?(Solved)
In which of the following pairs of levers is the load, effort and fulcrum likely to be in similar positions when in use?
A. Crowbar and claw hammer.
B. Wheelbarrow and spade.
C. Crowbar and spade.
D. Claw hammer and wheelbarrow.
Date posted: July 29, 2019. Answers (1)
- Which of the following planets are in the 2nd and 6th positions from the sun? (Solved)
Which of the following planets are in the 2nd and 6th positions from the sun?
A. Mars and Jupiter.
B. Venus and Saturn.
C. Earth and Saturn.
D. Venus and Jupiter.
Date posted: July 29, 2019. Answers (1)
- Which of the following statements is true about cumulus clouds?(Solved)
Which of the following statements is true about cumulus clouds?
A. Their presence is a sign of rain.
B. Appear at low altitude and spread out in fiat layers.
C. They are shaped like mountains.
D. They are dark grey in color.
Date posted: July 29, 2019. Answers (1)
- Which one of the following pairs is a source of electricity? (Solved)
Which one of the following pairs is a source of electricity?
A. Dam and a dynamo.
B. Wind-driven turbine and a dam.
C. Torch and a dynamo.
D. Dry cell and a geothermal generator.
Date posted: July 29, 2019. Answers (1)
- Which of the following materials are both opaque? (Solved)
Which of the following materials are both opaque?
A. Mirror and fresh milk.
B. Paper smeared with oil and frosted glass.
C. Fresh milk and frosted glass.
D. Mirror and paper smeared with oil.
Date posted: July 29, 2019. Answers (1)
- Which of the following statements is true about Vena Cava? It carries (Solved)
Which of the following statements is true about Vena Cava? It carries
A. Deoxygenated blood
B. Blood from the lungs
C. Blood under high pressure
D. Blood from the heart.
Date posted: July 29, 2019. Answers (1)
- A farmer practicing stall feeding is likely to feed animals on(Solved)
A farmer practicing stall feeding is likely to feed animals on
A. Pasture and fodder
B. Pasture and concentrates
C. Fodder and concentrates
D. Concentrates only.
Date posted: July 29, 2019. Answers (1)
- The following are processes that take place during birth in humans
(i) Dilation of the cervix
(ii) Contraction of the uterus
(iii) Bursting of the...(Solved)
The following are processes that take place during birth in humans
(i) Dilation of the cervix
(ii) Contraction of the uterus
(iii) Bursting of the amniotic bag
(iv) Pushing out of the baby
(v) Curling of the umbilical cord
Which of the following is the correct order of the processes?
A. (i), (iii), (ii), (iv), (v).
B. (i), (iii), (iv), (ii), (v).
C. (ii), (i), (iii), (iv), (v).
D. (ii), (iv), (iii), (i), (V).
Date posted: July 29, 2019. Answers (1)
- Soil that is good for modelling has (Solved)
Soil that is good for modelling has
A. High water drainage
B. Rough texture
C. High capillarity
D. Large air spaces.
Date posted: July 29, 2019. Answers (1)
- Newton is the unit for measuring (Solved)
Newton is the unit for measuring
A. Weight
B. Mass
C. Volume
D. Pressure.
Date posted: July 29, 2019. Answers (1)
- Splash erosion can be prevented by (Solved)
Splash erosion can be prevented by
A. Use of gabions
B. Mulching
C. Terracing
D. Contour farming.
Date posted: July 29, 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. Is free from disease causing germs
B. Is at the right temperature for infants
C. Boosts infant immunity
D. Is easily digested by infants.
Date posted: July 29, 2019. Answers (1)
- Which one of the following animals has scales on its body? (Solved)
Which one of the following animals has scales on its body?
A. Chameleon.
B. Whale.
C. Toad.
D. Newt.
Date posted: July 29, 2019. Answers (1)
- Which of the following pairs of processes occurs when temperature decreases? (Solved)
Which of the following pairs of processes occurs when temperature decreases?
A. Melting and condensation.
B. Freezing and melting.
C. Contraction and evaporation.
D. Freezing and condensation.
Date posted: July 29, 2019. Answers (1)
- The set up shown below can be used to investigate the presence of a certain component of soil.
The soil component investigated is (Solved)
The set up shown below can be used to investigate the presence of a certain component of soil.
The soil component investigated is
A. organic matter
B. water
C. air
D. mineral salts.
Date posted: July 29, 2019. Answers (1)
- To stop a moving object, the force applied should be (Solved)
To stop a moving object, the force applied should be
A. in the same direction as that of the moving object
B. opposite and less than that of the moving object
C. equal and in the opposite direction to that of the moving object
D. perpendicular and more than that of the moving object.
Date posted: July 29, 2019. Answers (1)
- The best procedure of separating a mixture of sand, maize and salt is (Solved)
The best procedure of separating a mixture of sand, maize and salt is
A. picking, dissolving, filtering, evaporating
B. dissolving, filtering, picking, evaporating
C. picking, filtering, dissolving, evaporating
D. dissolving, decanting, picking, evaporating.
Date posted: July 29, 2019. Answers (1)
- Heat is transferred through a vacuum by (Solved)
Heat is transferred through a vacuum by
A. convection and conduction
B. convection only
C. conduction and radiation
D. radiation only.
Date posted: July 29, 2019. Answers (1)