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WorksheetsScience Form 1 Chapter 7: Air
Total questions: 20
Worksheet time: 10mins
The air is made up of _____% Nitrogen.
87
78
76
What is W?
Oxygen
Nitrogen
Carbon dioxide
Chlorine gas
What is X?
Oxygen
Nitrogen
Carbon dioxide
Inert gases and other substances
Which made up the highest composition of air?
Nitrogen
Oxygen
Carbon dioxide
Water vapour
Which of the following is not an importance of oxygen?
Respiration
Combustion of fuels
Welding and cutting
Photosynthesis
Which of the following is an importance of carbon dioxide?
Respiration
Production of juice drinks
Photosynthesis
Cooling agent
Which of the following activities released carbon dioxide in carbon cycle?
Respiration
Decomposition
Burning of fossil fuels
Photosyntesis
Use of electric cars
What is environmental problem shown?
Covid 19
Haze
Greenhouse effect
What are two effect of the problems occurred based on the picture?
Causes breathing difficulties and cough
Can cause lung cancer
The visibility distance is limited/ shorter.
Can cause greenhouse effect
The road accident rate increase when this happen. Why?
Causes breathing difficulties and cough
The visibility distance is limited / shorter.
Which gas creates green house effect in the atmosphere?
Carbon dioxide
Ozone
Oxygen
None of these
A layer that surrounds the Earth
Atmosphere
Cloud
Sky
What is the suitable method to separate air components ?
chromatography
Fractional distillation
using magnet
What is the gas is used to fill hot air balloons and weather balloons?
Argon
Helium
Neon
the gas is used to fill the light bulb
Helium
Neon
Argon
What is the gas used in advertisement lighting?
Nirogen
Neon
Carbon dioxide
Oxygen
What is the gas used for welding and cutting metal?
Nitrogen
Carbon dioxide
Oxygen
Choose two steps that can be taken to prevent the distruption to the oxygen and carbon cycle
Reduce the burning of fuels
Encourage deforestation
Plants more trees
Use leaded petrol
