MEDIUM
Upper Secondary: IGCSE
IMPORTANT
Earn 100
Describe the process of separation of gases from the air, using the fractional distillation
process?
Important Questions on Air and Water
EASY
Upper Secondary: IGCSE
IMPORTANT
List the harmful gases produced in car engine.
EASY
Upper Secondary: IGCSE
IMPORTANT
Name the metals they usually use as catalysts.
EASY
Upper Secondary: IGCSE
IMPORTANT
Copy and complete:
Air is a _____ of different gases. of it consists of the two elements _____ and _____. Some of the remaining consist of two compounds, _____, and _____. The rest is made up of elements called the _____. These all belong to Group _____ of the Periodic Table. The gas we depend on most is _____. This gas combines with glucose in our body cells, releasing energy. The process is called _____. This gas is also used in combination with _____, in torches for welding and cutting metal.
EASY
Upper Secondary: IGCSE
IMPORTANT
Air is a mixture of different gases. Which gas makes up about of the air?
EASY
Upper Secondary: IGCSE
IMPORTANT
Air is a mixture of different gases. Which noble gas is present in the greatest quantity, in the air?
EASY
Upper Secondary: IGCSE
IMPORTANT
Air is a mixture of different gases. Which gas containing sulfur is a major cause of air pollution?
EASY
Upper Secondary: IGCSE
IMPORTANT
Air is a mixture of different gases. Which gas containing sulfur is a major cause of air pollution? What harmful effect does this gas have?
EASY
Upper Secondary: IGCSE
IMPORTANT
Air is a mixture of different gases. Name two other gases that contribute to air pollution, and say what harm they do.
