BASIC SCIENCE THIRD TERM EXAMINATION JUNIOR SECONDARY SCHOOL (JSS 3) MOCK EXAM QUESTIONS

DURATION – 2½

SECTION A- OBJECTIVES

INSTRUCTION – ATTEMPT ALL QUESTIONS IN THIS SECTION. ALL QUESTIONS CARRY EQUAL MARK

SECTION A – THEORY

Answer all questions. 

1 The union of male and female sex cells is called _______.

(a) gamete

(b) zygote

(c) cell

(d) embryo

 

2. _______ is a part of the mammalian eye where image is formed.

(a) Retina

(b) Optic nerve

(c) Pupil

(d) Ciliaya muscle

 

3. The chemical symbol for potassium is _______.

(a) K

(b) Na

(c) H

(d) P

 

4. All are separation techniques except _______.

(a) evaporation

(b) sublimation

(c) centrifuge

(d) titration

 

5. The solar system comprises of _______.

(a) Sun, planets

(b) sun, metalloid

(c) stars, moon

(d) sun, earth

 

6. _______ is the power house of a cell.

(a) Mitochondrion

(b) Nucleus

(c) Chloroplast

(d) Ribosome

 

7. Which of the following animals is a mammal?

(a) Fish

(b) Whale

(c) Bird

(d) Lizard

 

8. The unit of energy is called _______.

(a) Newton

(b) Joule

(c) Watt

(d) Ohms

 

9. The end product of carbohydrate digestion is _______.

(a) glucose

(b) maltose

(c) fatty acid and glycerol

(d) Amino acid

 

10. Which of these is an example of water borne diseases?

(a) Small pox

(b) Chicken pox

(c) Typhoid fever

(d) measles

 

11. The atomic number of Boron is _______.

(a) 3

(b) 4

(c) 5

(d) 6

 

12. All are elements of weather except _______.

(a) temperature

(b) rainfall

(c) humidity

(d) wave

 

13. Load stone magnet is _______ magnet.

(a) impure

(b) natural occurring

(c) fire

(d) temporary

 

14. Which of the following is a second class lever?

(a) Scissors

(b) Pliers

(c) Crowbar

(d) Bottle opener

 

15. The temperature at which liquid turns to solid is called _______ point.

(a) cooling

(b) freezing

(c) boiling

(d) melting

 

16. The carriers of micro organisms that cause diseases are called _______.

(a) antibodies

(b) germs

(c) vectors

(d) carrier

 

17. Astronauts in space have one major problem which is _______.

(a) weather

(b) heaviness

(c) communication

(d) weightlessness

 

18. The followings are major types of resources from plants except _______.

(a) food crops

(b) textile materials

(c) wood crops

(d) hide and skin

 

19. _______ is a method of heat transfer.

(a) Evaporation

(b) Conduction

(c) Insulation

(d) Distillation

 

20. How much work is done when a force of 200N is applied by car over a distance of 6m?

(a) 1200N

(b) 1200j

(c) 1200m/s2

(d) 1200N/M

 

21. A sound heard after the reflection of the sound wave is called _______.

(a) echo

(b) pitch

(c) noise

(d) music

 

22. These are fossil fuels except _______.

(a) cooking gas

(b) candle wax

(c) bitumen

(d) kerosene

 

23. _______ is not a water pollutant.

(a) CO2

(b) oil

(c) sewage

(d) gammaline

 

24. Another name for red blood cell is _______.

(a) erythrocyte

(b) leucocyte

(c) thromcyte

(d) luccocyte

 

25. Chlorination can be defined as the addition of _______ to eater to kill germs.

(a) Alum

(b) Cl

(c) Mg

(d) Iron

 

26. The energy conversion that takes place when you rub a palm together is _______ energy.

(a) mechanical/sound

(b) mechanical/chemical

(c) heat to sound

(d) mechanical/heat

 

27. The radiation used to examine soft body tissue is _______ ray.

(a) ᵝ

(b) ᵧ

(c) ᵪ

(d)

 

28. The soil type mostly rich in nutrients is _______.

(a) clay

(b) gravel

(c) loamy

(d) sandy

 

29. Style, stigma and ovary of a flower are referred to as _______.

(a) carpel

(b) stamen

(c) petal

(d) sepal

 

30. The tiny membrane which covers the vaginal opening is called _______.

(a) velva

(b) hymen

(c) mon pubic

(d) clitoris

 

31. The pigment which gives plants the green colour is _______.

(a) chrolophyll

(b) chloroplast

(c) chloroform

(d) chromoplast

 

32. These are field forces except _______ force.

(a) electric

(b) frictional

(c) gravitational

(d) magnetic

 

33. The bones-like structure found in the middle ear are called _______.

(a) blades

(b) ear bone

(c) ossicle

(d) pinna

 

34. A pregnant woman will develop goitre if she lacks _______ in her diet.

(a) calcium

(b) iron

(c) phosphorous

(d) iodine

 

35. One major difference between plants and animals is _______.

(a) movement

(b) excretion

(c) reproduction

(d) respiration

 

36. The genotype “Tt” shows that _______.

(a) shortness dominate tallness

(b) tallness is partially recessive

(c) shortness is partially dominant

(d) tallness dominates shortness

 

37. The parts of the body that are responsible for movement are _______, _______ and joint.

(a) bone, muscle

(b) bone, cartilage

(c) cartilage,muscle

(d) skeleton.cartilage

 

38. The quantity of H2O in the atmosphere is termed _______.

(a) air pressure

(b) humidity

(c) visibility

(d) rainfall

 

39. The vector for sleeping sickness is _______.

(a) housefly

(b) blackfly

(c) tee-tse fly

(d) mosquito

 

40. All are excretory products except _______.

(a) sweat

(b) urine

(c) carbon (iv) oxide

(d) faeces

 

41. Limestone is used to make the following except _______.

(a) concrete

(b) glass

(c) water pipes

(d) quick lime

 

42. Pulse taking is a medical procedure in determining proper functioning of the _______.

(a) heart

(b) kidney

(c) lungs

(d) liver

 

43. The outer ear is called _______.

(a) eardrum

(b) auditory meatus

(c) pinna

(d) canal

 

44. The function of lipase is to digest _______.

(a) starch

(b) proteins

(c) fats

(d) vitamins

 

45. Which of the following blood group is a universal donor?

(a) AB

(b) O

(c) A

(d) B

 

46. _______ Brown discovered Brownian motion.

(a) Robbin

(b) Rowland

(c) Rugged man

(d) Robert

 

47. Matters could be in form of atoms, molecules and _______.

(a) iron

(b) ion

(c) lion

(d) fays

 

48. Less than _______ % of all the earth’s water is available as fresh water.

(a) 1

(b) 2

(c) 3

(d) 4

 

49. Dry air contains _______ % of nitrogen.

(a) 21

(b) 78

(c) 7.8

(d) 2.1

 

50. The symbol of resistor is _______.

 

SECTION B – THEORY

INSTRUCTION – ANSWER THREE (3) QUESTIONS. 

QUESTION 1

A. What is family life education?

B. State 5 consequences of teenage pregnancy

C. List and explain types of abortion and when exactly abortion is the option to save life.

 

QUESTION 2

A. Define radioactivity.

B. Types of radioactivity with their symbol.

C. Outline the importance of radioactivity.

 

QUESTION 3

A. What are ethnical issues in science?

B. Explain the wrong application, implication of bad scientific practices and adverse effects in the country.

 

QUESTION 4

A. Define simple machine.

B. Mention three classes of simple machine with examples.

 

QUESTION 5

A. Write out the first 20 elements with the symbols

B. What are the latin words for,

I. Sodium

II. Iron

III. Potassium

IV. Lead