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WorksheetsIS quiz
Total questions: 25
Worksheet time: 13mins
Air contain which gases?
Nitrogen
Oxygen
Carbon dioxide
Noble gases
How do we test for oxygen?
By putting lime water in it
By putting a growing splint in it
By putting hydrogencarbonate indicator in it
No test
How does oxygen used in real life?
For storing living cells
For food packaging
For nothing
For welding metal (support burning)
Which part of the leaf is for photosynthesis?
Water
Chlorophyll
Chrolophyll
Glucose
What does sodium hydrogencarbonate for?
Absorb oxygen
Absorbs carbon dioxide
Provides oxygen
Provides carbon dioxide
Who are the ‘producers’ ?
Me
Plants
Animals
Fish
What are the diseases caused by smoking?
COVID-19
Throat cancer
Fever
Sick
What is the unit of resistance?
Ampere
Ohm
Ammeter
Omh
Which resistor have adjustable resistance?
Voltmeter
Rheostats
Resistor
Ammeter
What is the main voltage in Hong Kong?
110 V
220 V
200 V
100 V
When will overloading occur?
I dunno
Never occur
Occurs when too many electrical appliances are connected to a main socket
When a large current flowing though the circuit
What is a correct rating for a fuse?
No correct rating
Exactly the same
Slightly lower than the current
Slightly higher than the current
Where does rheostats used in?
Volume controls
Lights
3-pin plug
iPhone
What is the name of gases which trapped heat?
Nitrogen
Greenhouse gases
Noble gases
Hydrogen
What does ‘—>’ means in a food chain?
By eaten by
Eaten by
Eat
By eat
What is the effects of current?
Electrical
Heating
Chemical
Fire!!!!!!!!!!
What is the colour of Earth wire?
(a)
What is the word equation for photosynthesis?
Glucose + Carbon dioxide — Light energy + chlorophyll —> Water + Oxygen
Water + Chlorophyll — Light energy + carbon dioxide —> Glucose (starch) + Oxygen
Water + Carbon dioxide — Light energy + chlorophyll —> Glucose (starch) + Oxygen
Water + Oxygen — Light energy + chlorophyll —> Glucose (starch) + Carbon dioxide
What is the pH value of water?
4
9
7
5
What is the special things about acid?
Bitter
Sour
Slippery
Taste good
What does blue litmus paper test?
Water
Acid
Alkaline
Carbon dioxide
What is the advantage of the universal indicator?
Measure is more accurate
Less solution is needed for measurement
Suitable for dark-coloured solutions
Calibration is needed
What is the word equation of neutralization?
Metal + Acid = Hydrogen
Acid + Alkaline = Salt + Water
Acid + Salt = Alkaline + Water
Salt + Alkaline = Salt + Acid
How hydrogen is tested?
Burns with a pop sound
Relight a glowing splint
No test
Change lime water to milky
What does building materials contain?
Metal
Calcium carbonate
Dilute acid
Magnesium sulpate
