EASY
Upper Secondary: IGCSE
IMPORTANT
Earn 100

In the separation of air into its gases why is argon obtained before oxygen?

Important Questions on Air and Water

MEDIUM
Upper Secondary: IGCSE
IMPORTANT
Complete Chemistry for Cambridge IGCSE® Second Edition>Chapter 15 - Air and Water>Q>Q 1
In the separation of air into its gases, what do you think is the biggest expense? Explain.
EASY
Upper Secondary: IGCSE
IMPORTANT
Complete Chemistry for Cambridge IGCSE® Second Edition>Chapter 15 - Air and Water>Q>Q 2
Give two uses of oxygen gas.
EASY
Upper Secondary: IGCSE
IMPORTANT
Complete Chemistry for Cambridge IGCSE® Second Edition>Chapter 15 - Air and Water>Q>Q 3
 A mixture of oxygen and acetylene burns with a much hotter flame than a mixture of air and acetylene. Why?
 
EASY
Upper Secondary: IGCSE
IMPORTANT
Complete Chemistry for Cambridge IGCSE® Second Edition>Chapter 15 - Air and Water>Q>Q 4
Nitrogen is used to keep food frozen during transportation. Which properties make it suitable for this?
EASY
Upper Secondary: IGCSE
IMPORTANT
Complete Chemistry for Cambridge IGCSE® Second Edition>Chapter 15 - Air and Water>Q>Q 5
Give three uses for noble gases.
EASY
Upper Secondary: IGCSE
IMPORTANT
Complete Chemistry for Cambridge IGCSE® Second Edition>Chapter 15 - Air and Water>Q>Q 1
Which come from petrol burned in car engines?
EASY
Upper Secondary: IGCSE
IMPORTANT
Complete Chemistry for Cambridge IGCSE® Second Edition>Chapter 15 - Air and Water>Q>Q 1
Which come from air? How and why do these form?
EASY
Upper Secondary: IGCSE
IMPORTANT
Complete Chemistry for Cambridge IGCSE® Second Edition>Chapter 15 - Air and Water>Q>Q 2
Natural gas or methane is a fossil fuel. In a plentiful supply of air, it burns to give carbon dioxide and water. Write a balanced equation to show this.