Air lesson

Air contains -------nitrogen

• 100%

• 78.09%

• 89%

• 0.04%

Who named oxygen?

• C.W. Scheele

• Daniel Rutherford

• Newton

• Lavoisier

Which is called dry ice

• Carbon dioxide

• Oxygen

• Nitrogen

• Magnesium

Which is not a greenhouse gas

• CFC

• Methane

• Carbon dioxide

• Ozone

The surface temperature of Venus is

• 490⁰C

• 780⁰C

• 462⁰C

• 743⁰C

Rust is called ----------

• Hydrated ferric oxide

• Ferrous oxide

• Ferrous nitrate

• Magnesium sulphate

The Full form of CNG

• Compressed Natural Gas

• Compressed Nitrogen gas

• Common Natural gas

• Converted nitrogen gas

The percentage of Argon gas in air

• 0.93%

• 20.95%

• 0.07%

• 0.04%

The Greek word azote means------

• Venom

• Acid producer

• No life

• Earth

Which gas is used as a rocket fuel?

• Nitrogen

• Oxygen

• Carbon dioxide

• Hydrogen