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WASSCE Nov 2017 science

OBJECTIVE TEST

1.

Which of the following nutrients is not needed by crops in large quantity?

A.

calcium

B.

iron

C.

nitrogen

D.

phosphorus

2.

The motion of gas particles is an example of a

A.

circular motion

B.

rectilinear motion

C.

rational motion

D.

random motion

3.

Which of the following hormones maintains pregnancy in humans?

A.

Follicle-simulating hormone

B.

Oestrogen

C.

Progesterone

D.

Testosterone

4.

When alum is used in the treatment of water, it helps

A.

clay particles to coagulate

B.

the growth of algae

C.

heavy metals to precipitate

D.

remove odour in water

5.

Cassava mosaic is spread by an insect called..

A.

capsid

B.

mealy bug

C.

moth

D.

whitefly

6.

A test for the presence of lipids in food substances requires...

A.

Sudan III

B.

Benedict's solution

C.

Fehling's solution

D.

Million's reagent

7.

The amount of light entering the human eye is regulated by the...

A.

cornea

B.

lens

C.

pupil

D.

retina

8.

Galvanized roofing sheets are iron coated with a thin layer of...

A.

gold

B.

plastic

C.

tin

D.

zinc

9.

Liming as a method of maintaining soil fertility aims at...

A.

removing excess water from the soil

B.

reducing soil aggregation

C.

reducing soil acidity

D.

reducing soil alkalinity

10.

Which of the following mammals has a diastema?

A.

dog

B.

goat

C.

pig

D.

rat

11.

The functional group of methanoic acid is...

A.

B.

C.

D.

-COOH

12.

The mode of heat transfer in which the particles carrying the heat move from the hot region to the cold region is known as...

A.

conduction

B.

convection

C.

conversion

D.

radiation

13.

Which of the following physical properties are associated with non-metals?

I. Good conductor of electricity

II. Low tensile strength

III. High melting point

IV. Poor conductor of heat

A.

I and II only

B.

II and IV only

C.

I,II and III only

D.

II,III and IV only

14.

The feature of coconut which adapts it for water disposal is its...

A.

succulent nature

B.

high perishability

C.

fibrous mesocarp

D.

soft mesocarp

15.

Spacing of plants on the farm varies mainly according to the...

A.

type of soil

B.

the planting season

C.

fertility of the soil

D.

the variety of the crop

16.

Formation of rust could be facilitated by ...

I. the presence of moisture in the atmosphere

II. the presence of acids in the atmosphere

III. coating the surface of metals with oil

Which of the statements above is/are correct?

A.

I only

B.

II only

C.

I and II only

D.

II and III only

17.

An electrical bulb is rated 20W. This means that when it is in use, the...

A.

energy required to light it if outages is 20J

B.

amount of energy consumed daily is 20J

C.

word done in a day is 20J

D.

amount of energy consumed every hour is 20J

18.

The diagram below illustrates a uniform metre rule. Which point represents its centre of gravity?

A.

Q

B.

R

C.

S

D.

T

19.

Which of the following substances is hazardous?

A.

CO

B.

CO2

C.

Ne

D.

He

20.

Which of the following statements about the dentine of tooth is/are correct?

I. It is beneath the enamel

II. It occupies the largest part of the tooth

III. It contains the crown of the tooth

A.

I only

B.

I and II only

C.

II and III only

D.

I, II and III

21.

The final stage of the purification of water for town supply is

A.

addition of chlorine

B.

flocculation

C.

aeration

D.

sedimentation