ZIMBABWE SCHOOL EXAMINATIONS COUNCIL <br> General Certificate of Education Ordinary Level
**NOVEMBER 2019 SESSION**
Additional materials: Multiple Choice answer sheet Soft clean eraser Soft pencil (type B or HB is recommended.) Electronic calculator
TIME 1 hour
INSTRUCTIONS TO CANDIDATES
Do not open this booklet until you are told to do so. Write your name, centre number and candidate number on the answer sheet in the spaces provided unless this has already been done for you. There are forty questions in this paper. Answer all questions. For each question, there are four possible answers, A, B, C and D. Choose the one you consider correct and record your choice in soft pencil on the separate answer sheet.
Read very carefully the instructions on the answer sheet.
INFORMATION FOR CANDIDATES
Each correct answer will score one mark. A mark will not be deducted for a wrong answer. Any rough working should be done in this booklet.
This question paper consists of 18 printed pages and 2 blank pages. Copyright: Zimbabwe School Examinations Council, N2019.
Question 1
Which one has the same unit as moment of a force?
A force
B momentum
C power
D work
Question 2
What is the reading shown on the vernier callipers?
A 8.4 mm
B 8.6 mm
C 14.5 mm
D 15.0 mm
Question 3
What is the density of a piece of metal which has a mass of 450 g and a volume of \(48 \mathrm{~cm}^{3}\) ?
A \(0.1 \mathrm{~g} / \mathrm{cm}^{3}\)
B \(9.4 \mathrm{~g} / \mathrm{cm}^{3}\)
C \(402 \mathrm{~g} / \mathrm{cm}^{3}\)
D \(21600 \mathrm{~g} / \mathrm{cm}^{3}\)
Question 4
The graph shows the motion of a car from point A to C.
Which row best describes the motion of the car?
| | A-B | B-C | | :--- | :--- | :--- | | A | uniform acceleration | uniform velocity | | B | change in acceleration | uniform acceleration | | C | uniform velocity | uniform acceleration | | D | change in velocity | uniform acceleration |
Question 5
Which statement is correct for a rock falling freely?
A Acceleration is constant.
B Acceleration increases.
C Acceleration decreases.
D Acceleration is zero.
Question 6
Which changes result in an increase in the stability of an object?
A increased base area and increased height of centre of gravity
B decreased base area and increased height of centre of gravity
C increased base area and decreased height of centre of gravity
D decreased base area and decreased height of centre of gravity
Question 7
Inertia is
A resistance to change of state of motion.
B pressure due to change of motion.
C a force which opposes motion.
D a force which causes motion.
Question 8
The diagram shows a uniform metre rule in equilibrium.
What is the value of X ?
A 8 N
B 9 N
C 16 N
D 60 N
Question 9
Which statement is correct for a body moving in a circle at constant speed?
A There is no force acting on it.
B There is no force producing an acceleration.
C There is a force acting at a tangent to the circle.
D There is a force acting towards the centre of the circle.
Question 10
The diagram shows a pulley system.
What is the mechanical advantage of the pulley system?
A 0.067
B 0.670
C 1.50
D 15.00
Question 11
Which quantity is calculated by multiplying force and distance?
A work
B power
C pressure
D momentum
Question 12
Gravitational potential energy is transformed to kinetic energy when
A a car is travelling on a flat horizontal ground.
B a mango falls from a mango tree.
C a car is travelling up a hill.
D an object is thrown upwards.
Question 13
One watt is equivalent to one
A volt per second.
B joule per second.
C coulomb per second.
D ampere per second.
Question 14
Which source of energy is renewable?
A coal
B tides
C generators
D batteries
Question 15
Which factor affects the strength of joints?
A size of load
B size of contact area
C size of materials
D size of dowels
Question 16
What causes the production of soot in a petrol engine?
A blocked jets
B worn-out jets
C worn out radiator
D blocked petrol filter
Question 17
A compressional force is a
A rotational force.
B stretching force.
C crushing force.
D twisting force.
Question 18
The diagram shows the effect of removing air from a can.
Why does the can crush?
A The pressure inside the can is greater than outside pressure.
B The pressure inside the can is equal to outside pressure.
C The pressure inside the can is less than outside pressure.
D The pressure inside the pump is equal to the outside pressure.
Question 19
Which row shows what happens to the melting point of ice and the boiling point of water when the pressure is reduced?
| | melting point | boiling point | | :--- | :--- | :--- | | A | increases | increases | | B | increases | decreases | | C | decreases | decreases | | D | decreases | increases |
Question 20
Which statement best explains why water is not used in thermometers?
A It adheres to glass.
B It has a low heat capacity.
C It does not expand when heated.
D It has unusual behaviour.
Question 21
What happens to the temperature of a substance during change of state?
A it increases
B it decreases
C it remains constant
D it fluctuates
Question 22
What increases the loudness of a sound note?
A increase in frequency
B decrease in frequency
C decrease in amplitude
D increase in amplitude
Question 23
The diagram shows a ray of light travelling from air to glass.
Which ratio represents the refractive index of glass?
A \(\frac{P}{Q}\)
B \(\frac{Q}{P}\)
C \(\frac{\operatorname{Sin} P}{\operatorname{Sin} Q}\)
D \(\frac{\operatorname{Sin} Q}{\operatorname{Sin} P}\)
Question 24
Which electromagnetic wave is used in data communication?
A X-rays
B infra-red
C ultra-violet
D microwave
Question 25
The diagram shows a ray of white light passing through a glass prism.
Which component of the light is refracted the most?
A violet
B green
C blue
D red
Question 26
The depolariser used in a dry cell is
A ammonium (II) chloride.
B manganese (IV) oxide.
C zinc (II) sulphate.
D zinc (II) chloride.
Question 27
The diagram shows a charged rod brought close to a gold leaf electroscope.
The leaf diverges because
A negative charges move from the charged rod to the gold leaf.
B negative charges are repelled from the metal cap to the gold leaf.