ZIMBABWE SCHOOL EXAMINATIONS COUNCIL <br> General Certificate of Education Ordinary Level
**COMBINED SCIENCE**
PAPER 1 Multiple Choice JUNE 2019 SESSION 1 hour
Additional materials: Multiple Choice answer sheet Soft clean eraser Soft pencil (type B or HB is recommended.) Calculator (Optional)
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 **20** printed pages. Copyright: Zimbabwe School Examinations Council, J2019.
Question 1
Which nutrient provides energy?
A carbohydrate
B vitamin C
C fibre
D iron
Question 2
What is the function of the gall bladder?
A stores bile
B stores urine
C produces bile
D produces urea
Question 3
The photograph shows a condition due to malnutrition.
What is the name of the condition?
A obesity
B diabetes
C kwashiorkor
D anorexia nervosa
Question 4
Benedict's solution was added to a food sample. The mixture was heated. A brick-red colour was observed.
Which food component was present?
A fat
B starch
C protein
D glucose
Question 5
During anaerobic respiration,
A oxygen is used.
B alcohol is produced.
C lactic acid is produced in plant cells.
D a large amount of energy is released.
Question 6
The diagram shows the structure of an alveolus.
Which gas moves in the direction of the arrow?
A carbon monoxide
B carbon dioxide
C nitrogen
D oxygen
Question 7
The diagram shows a plant cell after it has been placed in a concentrated salt solution.
Which substance moves in the direction of the arrow?
A salt
B ions
C water
D cytoplasm
Question 8
The diagram shows the internal section of a blood vessel.
What is the function of **T**?
A to increase blood flow towards the heart
B to increase the lumen of the blood vessel
C to push blood towards the heart
D to prevent back flow of blood
Question 9
The diagram shows the human circulatory system. Which blood vessel, A, B, C or D, has blood under highest pressure?
Question 10
A woman starts her menstrual flow on the 2nd of April.
When is she expected to ovulate?
A 7 April
B 12 April
C 16 April
D 2 May
Question 11
Which part of the male reproductive system stores sperms?
A prostate gland
B sperm duct
C epididymis
D testis
Question 12
The diagram shows the reproductive system of a woman.
What is part S?
A cervix
B ovary
C uterus
D oviduct
Question 13
Which disease is spread by drinking contaminated water?
A ebola
B typhoid
C malaria
D chancroid
Question 14
The diagram shows some specialised human cells. Which cell, A, B, C or D, is the target of HIV?
Question 15
The diagram shows a simple distillation apparatus.
What happens in part X?
A the distillate is warmed
B vapour is converted to liquid
C vapour is directed into the container
D salt and the distillate are separated
Question 16
Element X has an electronic configuration of 2, 8, 2.
What is the charge of an ion of X?
A \(X^{2+}\)
B \(X^{2-}\)
C \(X^{6+}\)
D \(X^{6-}\)
Question 17
Which statement is true about the atom \({ }_{17}^{37} X\)?
A It has 37 neutrons.
B It has 37 protons.
C It has 20 protons.
D It has 20 neutrons.
Question 18
Which formula is used to calculate the concentration of a solution?
A number of moles x volume
B mass x volume
C \(\frac{\text{number of moles}}{\text{volume}}\)
D \(\frac{\text{volume}}{\text{mass}}\)
Question 19
Which one is a property of a molten ionic compound?
A It is an electrolyte.
B It is insoluble in water.
C It has a low melting point.
D It is a non conductor of electricity.
Question 20
Chlorine gas is used in
A food preservation.
B electric light bulbs.
C soap making.
D water purification.
Question 21
The reaction between sodium hydroxide and hydrochloric acid produces a salt and
A water.
B a base.
C an acid.
D hydrogen.
Question 22
Iron, copper, zinc and magnesium are all metals.
Which one is the least reactive?
A magnesium
B copper
C zinc
D iron
Question 23
The diagram shows the electrolysis of water.
What is gas X?
A oxygen
B chlorine
C nitrogen
D hydrogen
Question 24
Which process is prevented by galvanising?
A decomposition
B neutralisation
C reduction
D rusting
Question 25
The diagram shows stages in the manufacture of ammonia.
What is the pressure required at **X**?
A 8-10 atm
B 100-150 atm
C 200-300 atm
D 450-500 atm