DIVISION
S
SECONDARY
YEAR 7, 8, 9
1.
2.
ASIAN SCIENCE OLYMPIAD
CONTEST 2020
(SCHOOL ROUND)
If the resistance of a wire is fixed, the power of the wire is
A.
directly proportional to the current that flows through it.
B.
directly proportional to the square of the current that flows through it.
C.
inversely proportional to the current that flows through it.
D.
inversely proportional to the square of the current that flows through it.
E.
None of the above
Which of the following statements is true about both radio waves and gamma rays?
A.
Both propagate at the same frequency.
B.
Both are transverse waves.
C.
Both have high penetrating power and energy.
D.
Both are suitable for telecommunications.
E.
None of the above
Asian Science and Mathematics Olympiads
DIVISION
S
SECONDARY
YEAR 7, 8, 9
3.
4.
ASIAN SCIENCE OLYMPIAD
CONTEST 2020
(SCHOOL ROUND)
Which of the following substances can be used to coagulate latex?
A.
Ethanoic acid
B.
Ammonium solution
C.
Salt
D.
Water
E.
None of the above
Which of the following metals is suitable to be used to build the body of an aircraft?
A.
Zinc
B.
Lead
C.
Copper
D.
Duralumin
E.
None of the above
Asian Science and Mathematics Olympiads
DIVISION
S
SECONDARY
YEAR 7, 8, 9
5.
6.
ASIAN SCIENCE OLYMPIAD
CONTEST 2020
(SCHOOL ROUND)
Which process makes natural rubber harder and more heat-resistant?
A.
Polymerisation
B.
Vulcanisation
C.
Heating
D.
Hydrogenation
E.
None of the above
Which of the following statements is true about microwave?
A.
Slower than sound wave
B.
Can be reflected by the ionosphere layer
C.
Cannot be used in satellite communication
D.
Can travel far without being scattered by the atmosphere
E.
None of the above
Asian Science and Mathematics Olympiads
DIVISION
S
SECONDARY
YEAR 7, 8, 9
7.
8.
ASIAN SCIENCE OLYMPIAD
CONTEST 2020
(SCHOOL ROUND)
Which process is used to increase the hardness of a metal?
A.
Distillation
B.
Depolymerisation
C.
Alloying
D.
Purification
E.
None of the above
Which of the following food processing methods uses gamma rays?
A.
Freezing
B.
Irradiation
C.
Pasteurisation
D.
Sterilisation
E.
None of the above
Asian Science and Mathematics Olympiads
DIVISION
S
SECONDARY
YEAR 7, 8, 9
9.
ASIAN SCIENCE OLYMPIAD
CONTEST 2020
(SCHOOL ROUND)
Which of the following adaptations is meant to increase the efficiency of gaseous exchange
in plants?
A.
Dropping the old leaves
B.
Having a large number of leaves
C.
More stomata in the upper epidermis
D.
Having the intercellular spaces filled with fluid
E.
None of the above
10. Which of the following is true about ionic compounds?
A.
Dissolve in covalent solvents
B.
Conduct electricity in solid state
C.
Need a lot of heat to break its bonds
D.
Have low melting point and high boiling point
E.
None of the above
Asian Science and Mathematics Olympiads
DIVISION
S
SECONDARY
YEAR 7, 8, 9
ASIAN SCIENCE OLYMPIAD
CONTEST 2020
(SCHOOL ROUND)
11. Which of the following describes Down’s syndrome?
A.
Skin and hair become white
B.
Unable to distinguish between red and green colours
C.
Has less than 46 chromosomes in each body cell
D.
Has an extra chromosome attached to the 21st pair of chromosome
E.
None of the above
12. Which of the following metals reacts more vigorously with oxygen than aluminium?
A.
Copper
B.
Silver
C.
Sodium
D.
Lead
E.
None of the above
Asian Science and Mathematics Olympiads
DIVISION
S
SECONDARY
YEAR 7, 8, 9
ASIAN SCIENCE OLYMPIAD
CONTEST 2020
(SCHOOL ROUND)
13. Which of the following substances is made of ions?
A. Iron
B. Sodium chloride
C. Oxygen
D. Hydrogen
E. None of the above
14. Which of the following occurs when zinc carbonate powder is strongly heated in a test tube?
A.
Black powder is formed
B.
Bright glow is observed
C.
Gas released turns lime water cloudy
D.
The gas changes red litmus paper to blue
E.
None of the above
Asian Science and Mathematics Olympiads
DIVISION
S
SECONDARY
YEAR 7, 8, 9
ASIAN SCIENCE OLYMPIAD
CONTEST 2020
(SCHOOL ROUND)
15. Which of the following substances is an alloy?
A.
Steel
B.
Water
C.
Sodium oxide
D.
Aluminium oxide
E.
None of the above
16. Which of the following wave property changes when interference of waves occurs?
A. Speed
B. Wavelength
C. Amplitude
D. Direction of propagation
E. None of the above
Asian Science and Mathematics Olympiads
DIVISION
S
SECONDARY
YEAR 7, 8, 9
ASIAN SCIENCE OLYMPIAD
CONTEST 2020
(SCHOOL ROUND)
17. Which of the following has the highest frequency?
A. Gamma ray
B. Ultraviolet light
C. Infrared ray
D. X-ray
E. None of the above
18. Why is the filament made in the shape of a coil?
A. To increase the length and produce a higher resistance
B. To increase the current and produce more energy
C. To decrease the resistance and produce a higher current
D. To decrease the current and produce a higher potential difference
E. None of the above
Asian Science and Mathematics Olympiads
DIVISION
S
SECONDARY
YEAR 7, 8, 9
ASIAN SCIENCE OLYMPIAD
CONTEST 2020
(SCHOOL ROUND)
19. Which statement about a transformer is correct?
A. Its output power is always greater than its input power
B. Its efficiency is increased by using laminated steel core
C. Is used to alter the potential difference of direct current
D. Its operating principle is based on electromagnetic induction
E. None of the above
20. Which of the following instruments uses a plane mirror?
A. Camera
B. Periscope
C. Telescope
D. Microscope
E.
None of the above
Asian Science and Mathematics Olympiads
DIVISION
S
SECONDARY
YEAR 7, 8, 9
ASIAN SCIENCE OLYMPIAD
CONTEST 2020
(SCHOOL ROUND)
21. Which of the following electromagnetic waves is arranged in order of decreasing frequency?
A. Microwaves, ultraviolet, X-rays
B. X-rays, visible light, radio waves
C. Radio waves, X-rays, visible light
D. Visible light, gamma rays, radio waves
E. None of the above
22. A sound wave of the frequency of 20000 Hz and a wavelength of 75 cm is used to determine
the depth of a well. The wave takes 8 seconds to return. Find the depth of the well.
A. 20000 m
B. 40000 m
C. 60000 m
D. 80000 m
E. 100000 m
Asian Science and Mathematics Olympiads
DIVISION
S
SECONDARY
YEAR 7, 8, 9
ASIAN SCIENCE OLYMPIAD
CONTEST 2020
(SCHOOL ROUND)
23. Which of the following can be found in the urine of a normal healthy person?
I
Urea
II
White blood cells
III
Amino acids
IV
Red blood cells
V
Sodium chloride
A. I, II, III, IV and V
B. I, II and III only
C. II, III and IV only
D. II, III, IV and V only
E. I and V only
Asian Science and Mathematics Olympiads
DIVISION
S
SECONDARY
YEAR 7, 8, 9
ASIAN SCIENCE OLYMPIAD
CONTEST 2020
(SCHOOL ROUND)
24. An electric generator station generates 100 kW of electricity. If this power is sent to a
factory which needs 20 kV through a cable which has a resistance of 5  , find the amount of
power loss through the cable.
A. 300 W
B. 220 W
C. 185 W
D. 125 W
E. 100 W
25. Which of the following will not increase the effect of electromagnetism?
A. Increase the number of coils
B. Increase the amount of current flow
C. Substitute the soft iron bar with a copper bar
D. Use thinner coil wires
E.
None of the above
Asian Science and Mathematics Olympiads