Palm & Cedar March 2026 Science
Palm & Cedar March 2026 Science - Section A Instructions
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Question 1
The process by which living things such as plants take up nitrogen in the soil in the form of nitrates is termed as
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Question 2
The inorganic mineral particles of the soil are derived from
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Question 3
The gas responsible for global warming is
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Question 4
One reason for brushing the teeth regularly is to
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Question 5
An element A has two electrons in the outermost shell. Another element B has six electrons in its outer shell. The most likely compound which can be formed when they combine is
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Question 6
Which of the following structures controls the passage of dissolved substances in and out of living cells?
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Question 7
A machine has a velocity ratio of 9 and needs an effort of 10 N to move a load of 50 N. Calculate the efficiency of the machine
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Question 8
During exhalation, air is forced out of the lungs because
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Question 9
The best period to harvest fodder for preparing hay or silage is
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Question 10
Which of the following chemical formulae correctly represents Aluminium sulphate?
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Question 11
If a fertilizer contains an ammonium compound, which element is present in the fertilizer?
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Question 12
Which of the following is a natural parent rock?
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Question 13
Which of the following diseases is caused by virus?
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Question 14
In household wiring, appliances are connected in parallel for each of them to get the same
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Question 15
The bronchi in the lungs divide into smaller branches which end up in tiny sacs called
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Question 16
The AIDS virus destroys the body tissues rapidly because
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Question 17
Acidity of the soil may be reduced by
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Question 18
Living cells of both plants and animals contain
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Question 19
When a force is applied to a body, it can result in a change in all the following except
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Question 20
Which of the following specialized cells lack nucleus?
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Question 21
Photosynthesis does not take place in the dark because
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Question 22
All the following are colloids except
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Question 23
The ability of the human body to resist infection by producing antibodies is termed
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Question 24
An atom with a mass number of 23 has 11 protons. How many charged particles are in the atom?
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Question 25
According to World Health Organization, the definition of health includes
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Question 26
A river contaminated by alkali waste will have a pH of about
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Question 27
When the particles making up a substance are closely packed, fixed in position and regularly arranged, the substance is likely to be in the
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Question 28
The non-metal among the following elements is
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Question 29
Which of the following statements is correct?
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Question 30
A symptom of calcium deficiency is
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Question 31
Which of the following pairs of crops belong to the same group?
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Question 32
The site for digestion of all food substances in the human digestive system is the
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Question 33
Parts of plants used for vegetative propagation include I. bulbs II. leaves III. rhizomes
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Question 34
Which of the following statements below about the magnetic properties of iron and steel is correct?
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Question 35
The partitioning of the heart by the septum ensures that
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Question 36
Which of the following are micro-nutrients?
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Question 37
Biogas is obtained from the
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Question 38
Which of the following machines is different from the rest?
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Question 39
Which of the following structures in a plant is concerned with the manufacture of organic food?
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Question 40
An animal with well-developed and pointed canines and strong cheek teeth is likely to feed on
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Question 41
A farmer cultivated four different crops: cassava, millet, cucumber and peas on different plots of the same piece of land using crop rotation. List two principles considered when planning the crop rotational plan.
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Question 42
A farmer cultivated four different crops: cassava, millet, cucumber and peas on different plots of the same piece of land using crop rotation. Using the principles of crop rotation, draw a four-year rotational plan for the crops.
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Question 43
Give three advantages of crop rotation as a farming system.
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Question 44
Briefly explain the role of peas in a crop rotational plan.
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Question 45
Study the diagram showing atoms of two different elements P and Q. Identify, with reason, the group of element P.
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Question 46
Study the diagram showing atoms of two different elements P and Q. Identify, with reason, the period of element Q.
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Question 47
Study the diagram showing atoms of two different elements P and Q. Briefly explain how P and Q are chemically bonded to form a compound.
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Question 48
Study the diagram showing atoms of two different elements P and Q. Give the systematic name and chemical formula of the compound formed by P and Q.
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Question 49
Study the diagram showing atoms of two different elements P and Q. State the observation made when pieces of red and blue litmus papers are dipped into a solution of the compound formed between P & Q.
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Question 50
Study the food web diagram. Name a particular habitat that the food web represents.
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Question 51
Study the food web diagram. Identify two examples each of secondary consumers and producers.
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Question 52
Study the food web diagram. Draw a food chain involving three organisms from the diagram.
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Question 53
Study the food web diagram. Draw a food chain involving four organisms from the diagram.
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Question 54
Give three differences between food web and food chain.
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Question 55
Study the diagram of devices used to generate energy. Identify the devices labelled A and B.
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Question 56
State the type of energy source generated by both devices shown.
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Question 57
Give two benefits of the energy source generated by the devices below.
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Question 58
State one major use of the devices shown below.
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Question 59
State the energy transformations involved in the operation of device B.
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Question 60
Mention one device that can be used to harness energy from the sun.
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Question 61
Name the two particles found in all atomic nuclei.
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Question 62
State three differences between ionic compounds and covalent compounds.
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Question 63
Name the cell organelle responsible for site of cellular respiration.
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Question 64
Name the cell organelle responsible for storage of dissolved minerals and chemicals.
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Question 65
Name the cell organelle responsible for site for protein synthesis.
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Question 66
Name the cell organelle responsible for site for photosynthesis in green plants.
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Question 67
Identify the equipment shown and state three ways it helps reduce heat loss or gain.
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Question 68
Differentiate between land rotation and crop rotation.
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Question 69
Differentiate between mixed farming and mixed cropping.
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Question 70
State two effects of force on an object.
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Question 71
A body of mass 500 g is pulled through a horizontal frictionless floor with an acceleration of 12 m/s². Find the force acting on the body.
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Question 72
Using the table of particles, identify which represent cations, anions, and atoms and Explain the reason for your answer.
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Question 73
Explain four methods of feeding farm animals.
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Question 74
State three ways industrial waste could be made useful.
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Question 75
State one role of nitrogen in crop production.
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Question 76
Copy and complete the pH table and identify strong acid and weak base.
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Question 77
An electrical appliance rated 1.5 kW, 240 V is left running for 2 hours. Calculate current drawn and electrical energy consumed.
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Question 78
Explain the greenhouse effect and climate change and state two effects of climate change.
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Question 79
What is a p-n junction diode and how is it formed and used in forward bias?
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Question 80
Indicate whether given substances are elements, compounds or mixtures.
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Question 81
Identify and explain the methods of applying fertilizers from the image below.
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Question 82
Briefly explain how afforestation and use of old cars affect the carbon cycle.
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