Which of the following statements about resistors connected in parallel is correct? The total resistance is
2
The pigment in the skin responsible for skin colouration is
3
Which of the following alloys contain copper? I. Brass II. Bronze III. Duralumin
4
A body has a weight of 720 N. Calculate the mass of the body [g = 10 ms-2]
5
The burdizzo is purposely used for
6
An electrical component that is used to vary electric current is the
7
An example of fungal disease of stored grains is
8
Aluminium is used for making high tension cables because it is I. light. II. highly conducting. III. brittle.
9
Which of the following forces is mainly reduced when a lubricant is applied to the moving parts of an engine?
10
An instrument that could be used to measure the relative density of an acid is
11
The potential difference across the terminals of a resistor is 24 V. Determine the current which will flow through the resistor with resistance 15 Ω.
12
The component of air used for welding is
13
In a step-down transformer,
14
One function of water in the germination of seeds is that it
15
An important function of organic matter in the soil is to
16
A car of mass 1600 kg moves with a velocity of 80 ms-1. Determine the momentum of the car.
17
The gas in the stratosphere that absorbs ultraviolet rays to minimize the heat reaching the earth's surface is
18
A mating ratio of 1 : 50 in goat breeding means that 800 females could be serviced by
19
Which of the following substances contribute(s) to the depletion of the ozone layer? I. Carbon (II) oxide II. Chlorofluorocarbon III. Carbon (IV) oxide
20
The gas used in the welding torch belongs to the family of
21
Which of the following metals is a liquid at room temperature?
22
The essential parts of a flower are the
23
The blood vessel that carries oxygenated blood to the heart is
24
Addition of an atom of a pentavalent element to a tetravalent element I. is known as doping. II. forms an n-type semiconductor. III. forms a p-type semiconductor.
25
Which of the following structures in plants prevents water loss?
26
The fraction of petroleum distillation used as fuel for heavy duty engine is
27
Members of the same species living in the same place at the same time make up the
28
Thinning out means
29
Terracing checks soil erosion by
30
The vacuum flask minimizes heat loss by I. having a vacuum between the two surfaces. II. polishing the two surfaces. III. using a cork stopper. Which of the statements above are correct?
31
The radioactive radiation with the least penetration power is
32
Lime juice tastes sour because it contains
33
Good quality seeds should be
34
Which of the following statements about small scale industry is correct? It
35
The most important climate factor affecting crop production in West Africa is
36
Fertilization in flowering plants is known as double because
37
Which of the following scientists is associated with the study of inheritance?
38
During thunderstorm, lightning is seen before the sound is heard although both occur at the same time. This is because
39
In the periodic table, all the elements within the same group have the same
40
The term used to describe all chemical reactions occurring inside an organism is
41
The gas produced when dilute hydrochloric acid reacts with trioxocarbonate (IV) salt is
42
The following substance are air pollutants except
43
A disadvantage of practicing mixed cropping is the
44
DNA testing is used to determine
45
One of the advantages of the free range system of poultry is that
46
The largest excretory organ of the human body is the
47
A flower with both stamens and carpels is said to be
48
The material used for propagating cassava is the
49
An example of a corm is
50
An electric appliance is rated 60 W. This means the appliance
