Bece Past Questions & Answers – 2015 (Science)

JUNE 2015
INTEGRATED SCIENCE 1
OBJECTIVE TEST
45 minutes

1.     Brass is an alloy of
A.    iron and carbon
B.    zinc and copper
C.    iron and copper
D.    copper and tin

2.     An example of inorganic fertilizer is
A.    ammonium nitrate
B.    cow dung
C.    farmyard manure
D.    poultry dropping

3.     The component of the human blood which transports oxygen to all parts of the body is
A.    plasma
B.    platelets
C.    red blood cells
D.    white blood cells

4.     The importance of the fuse in an electrical circuit is to
A.    regulate the voltage
B.    prevent damage to electrical appliances
C.    alter the flow of current in the circuit
D.    minimize the use of current

5.     Which of the following step(s) is/are required in the scientific method?
I.    Formulation of hypothesis
II.    Identification of the problem
III.    Experimentation

A.    I only
B.    II only
C.    II and III only
D.    I, II and III

6.     Which of the following food items produces amino acids as end product of digestion?
A.    Cabbage
B.    Fish
C.    Margarine
D.    Rice

7.     The process of increasing the strength of a signal using a transistor is known as
A.    amplification
B.    biasing
C.    doping
D.    switching

8.     The physical arrangement of soil particles into aggregates is termed
A.    soil porosity
B.    soil profile
C.    soil structure
D.    soil texture

9.     The solvent which is most effective in washing bitumen from the hand is
A.    acid
B.    alcohol
C.    kerosene
D.    water

10.     A piece of stone could be classified as an opaque material because it
A.    absorbs all the light incident on it
B.    does not absorb light incident on it
C.    allows all the light incident on it to pass through it
D.    does not allow light incident on it to pass through it

11.     Fish swims in water with little resistance because it possesses
A.    gills
B.    scales
C.    caudal fins
D.    streamlined body

12.     Which of the following conditions promote(s) rusting of iron?
I.    Air
II.    Moisture
III.    Oil

A.    I only
B.    II only
C.    I and II only
D.    II and III only

13.     The change in the volume of water when a piece of stone is dropped into it is equal to the
A.    density of the stone
B.    mass of the stone
C.    volume of the stone
D.    weight of the stone

14.     The second stage in the life cycle of a mosquito is the
A.    egg
B.    imago
C.    larva
D.    pupa

15.     Which of the following objects could be attracted by a magnet?
A.    Copper chain
B.    Gold chain
C.    Steel blade
D.    Aluminium spoon

16.     The knowledge of soil texture is important because it
A.    influences plant population
B.    determines the planting distance
C.    determines the type of crop to be grown
D.    influences the method of pest control

17.     How many atoms are present in CaCl2?
A.    2
B.    3
C.    4
D.    5

18.     The transfer of heat from the bottom to the top of a beaker containing water is by
A.    absorption
B.    conduction
C.    convection
D.    radiation

19.     An example of a chemical compound is
A.    aluminium
B.    ammonia
C.    oxygen
D.    phosphorus

20.     The type of the human teeth used for biting food substances is
A.    canines
B.    incisors
C.    molars
D.    premolars

21.     Which of the following heavenly bodies is a star?
A.    Jupiter
B.    Moon
C.    Sun
D.    Venus

22.     Which of the following organisms is an endoparasite?
A.    Fleas
B.    Louse
C.    Tapeworm
D.    Tick

23.     The part of the plant where pollination occurs is the
A.    flowers
B.    leaves
C.    roots
D.    stems

24.     Which of the following substances is capable of neutralizing an acid?
A.    Vinegar
B.    Water
C.    Sodium chloride
D.    Sodium hydroxide

25.     Droplet infection is the method by which
A.    diseases are transmitted from animals to plants
B.    infected animals are processed
C.    human beings protect themselves from diseases
D.    diseases are spread through the air

26.     An example of a derived quantity is
A.    length
B.    mass
C.    time
D.    velocity

27.     A structure in the human reproductive system which stores sperms temporarily is the
A.    epididymis
B.    penis
C.    scrotum
D.    vulva

28.     Which of the following statements about diffusion is/are correct?
I.    It involves the movement of water molecules only
II.    It occurs in both gases and liquids
III.    It involves a semi-permeable membrane

A.    I only
B.    II only
C.    I and II only
D.    I, II and III

29.     A farming system which requires at least three years programme is
A.    mixed cropping
B.    crop rotation
C.    organic farming
D.    mixed farming

30.     The component of a living cell responsible for respiration is
A.    chloroplast
B.    mitochondria
C.    nucleus
D.    vacuole

31.     Which of the following statements about a second class lever is correct? The
A.    pivot is between the load and the effort
B.    pivot and the load are at the same position
C.    load is between the effort and the pivot
D.    effort is  between the load and the pivot

32.     One advantage of soft water over hard water is that soft water
A.    has a pleasant taste
B.    can prevent heart diseases
C.    does not waste soap
D.    forms scales in kettles

33.     The gas produced when glucose is oxidized during aerobic respiration is
A.    hydrogen
B.    nitrogen
C.    oxygen
D.    carbon dioxide

34.     The systematic name for N2O is
A.    nitrogen (I) oxide
B.    nitrogen (II) oxide
C.    nitrogen (III) oxide
D.    nitrogen (IV) oxide

35.     A husbandry practice which involves the removal of unwanted plant parts is known as
A.    mulching
B.    pruning
C.    thinning
D.    pricking out

36.     The number of p-n junctions in a transistor is
A.    1
B.    2
C.    3
D.    4

37.     Fruits dispersed by wind
A.    have hairs
B.    are sticky
C.    are succulent
D.    have hooks

38.     Substances that burn living tissues when they come into contact with these tissues are considered
A.    corrosive
B.    flammable
C.    irritant
D.    toxic

39.     The function of the platelets in the circulatory system of humans is to
A.    transport oxygen
B.    transport carbon dioxide
C.    clot the blood
D.    defend the body

40.     Energy is the
A.    force to move an object
B.    weight to do work
C.    ability to do work
D.    power to carry an object




 

CLICK TO VIEW ANSWERS TO OBJECTIVES
JUNE 2015
INTEGRATED SCIENCE 1
OBJECTIVE TEST
SOLUTIONS

1.     B.    zinc and copper
2.     A.    ammonium nitrate
3.     C.    red blood cells
4.     B.    prevent damage to electrical appliances
5.     D.    I, II and III
6.     B.    Fish
7.     A.    amplification
8.     B.    soil structure
9.     C.    kerosene
10.     D.    does not allow light incident on it to pass through it
11.     D.    streamlined body
12.     C.    I and II only
13.     C.    volume of the stone
14.     C.    larva
15.     C.    Steel blade
16.     C.    determines the type of crop to be grown
17.     B.    3
18.     C.    convection
19.     B.    ammonia
20.     B.    incisors
21.     C.    Sun
22.     C.    Tapeworm
23.     A.    flowers
24.     D.    Sodium hydroxide
25.     D.    diseases are spread through the air
26.     D.    velocity
27.     A.    epididymis
28.     B.    II only
29.     B.    crop rotation
30.     B.    mitochondria
31.     C.    load is between the effort and the pivot
32.     C.    does not waste soap
33.     D.    carbon dioxide
34.     D.    nitrogen (I) oxide
35.     B.    pruning
36.     B.    2
37.     A.    have hairs
38.     A.    corrosive
39.     C.    clot the blood
40.     C.    ability to do work