Podcast
Questions and Answers
Which gas is used in fire extinguishers to put out fires?
Which gas is used in fire extinguishers to put out fires?
- Nitrogen
- Oxygen
- Water vapour
- Carbon dioxide (correct)
Which gas is used in cutting metals in the industry?
Which gas is used in cutting metals in the industry?
- Oxygen (correct)
- Carbon dioxide
- Water vapour
- Nitrogen
What gas is used to produce a fog effect on stages?
What gas is used to produce a fog effect on stages?
- Oxygen
- Nitrogen
- Carbon dioxide
- Water vapour (correct)
What gas is used in advertising lights?
What gas is used in advertising lights?
What gas is used to fill balloons and airships?
What gas is used to fill balloons and airships?
What gas is used to fill light bulbs?
What gas is used to fill light bulbs?
What gas is used for storing living cells and tissues?
What gas is used for storing living cells and tissues?
What gas is used to fill some food packages to prevent food from going bad?
What gas is used to fill some food packages to prevent food from going bad?
What gas does not support burning and is denser than air?
What gas does not support burning and is denser than air?
What gas is used to help with breathing difficulties?
What gas is used to help with breathing difficulties?
Which gas relights a glowing splint?
Which gas relights a glowing splint?
What happens to a burning splint when it is placed into a test tube of oxygen?
What happens to a burning splint when it is placed into a test tube of oxygen?
What happens to a glowing splint when it is placed into a test tube of oxygen?
What happens to a glowing splint when it is placed into a test tube of oxygen?
What happens to hydrogencarbonate indicator when it is added to a test tube of oxygen?
What happens to hydrogencarbonate indicator when it is added to a test tube of oxygen?
What happens to limewater when it is added to a test tube of oxygen?
What happens to limewater when it is added to a test tube of oxygen?
What happens to a burning splint when it is placed into a test tube of carbon dioxide?
What happens to a burning splint when it is placed into a test tube of carbon dioxide?
What happens to a glowing splint when it is placed into a test tube of carbon dioxide?
What happens to a glowing splint when it is placed into a test tube of carbon dioxide?
What happens to hydrogencarbonate indicator when it is added to a test tube of carbon dioxide?
What happens to hydrogencarbonate indicator when it is added to a test tube of carbon dioxide?
What happens to limewater when it is added to a test tube of carbon dioxide?
What happens to limewater when it is added to a test tube of carbon dioxide?
Which gas does not have a simple test to identify it?
Which gas does not have a simple test to identify it?
According to the text, why are living things found on Earth but not on the Moon?
According to the text, why are living things found on Earth but not on the Moon?
What is air made up of according to the text?
What is air made up of according to the text?
According to the text, what percentage of air is nitrogen?
According to the text, what percentage of air is nitrogen?
According to the text, what percentage of air is carbon dioxide?
According to the text, what percentage of air is carbon dioxide?
According to the text, what percentage of air is water vapor?
According to the text, what percentage of air is water vapor?
According to the text, how can we test for gases in air?
According to the text, how can we test for gases in air?
According to the text, what are the major components of air?
According to the text, what are the major components of air?
According to the text, why is air essential to living things?
According to the text, why is air essential to living things?
According to the text, why are there no living things found on the Moon?
According to the text, why are there no living things found on the Moon?
According to the text, who discovered oxygen?
According to the text, who discovered oxygen?
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