WorksheetsForm 1 Science Chapter 7
Total questions: 17
Worksheet time: 9mins
What causes gases to trap in Earth?
Atmosphere
Sun
Moon
Space
Air is a mixture of many substances. Which of the following examples is not one of them?
Microorganisms
Dust
Water vapour
Hydrogen
Magnesium
What is W?
Oxygen
Nitrogen
Carbon dioxide
Inert gases and other substances
What is X?
Oxygen
Nitrogen
Carbon dioxide
Inert gases and other substances
What is Y?
Oxygen
Nitrogen
Carbon dioxide
Inert gases and other substances
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
In oxygen cycle, what takes in carbon dioxide and produces oxygen to the environment?
Trees
Animals
Microorganisms
Human
What are the 3 conditions needed for combustion?
Oxygen
Heat
Fuel
Carbon dioxide
Light
The air is made up of _____% Nitrogen.
87
78
76
Which made up the highest composition of air?
Nitrogen
Oxygen
Carbon dioxide
Water vapour
Which gas creates green house effect in the atmosphere?
Carbon dioxide
Ozone
Oxygen
None of these
How to test the presence of Oxygen?
Use lime water
Use glowing wooden splinter
Use burning wooden splinter
Use litmus paper
____________ helps in photosynthesis.
Inert gas
Oxygen
Carbon dioxide
Nitrogen
What is air?
Element
Compound
Mixture
Which is NOT the product of combustion?
Carbon Dioxide
Heat
Light
Oxygen
Carbon + Oxygen → ____________
Water
Nitrogen
Carbon dioxide
Hydrocarbon
