Give two uses of the following components present in air :
(a) oxygen (b) nitrogen
(c ) carbon dioxide (d) water vapour

Give the group number of the following elements present in periodic table (a) Magnesium (b) Carbon (c) Sulphur (d) Neon

Mention two uses of the following metals and non-metals : (a) Iron (b) Aluminium (c) Gold (d) Oxygen (e) Iodine

Methanogens do not produce (a) Oxygen (b) Methane (c) Hydrogen sulfide (d) Carbon dioxide

What is the use of solubility of oxygen and carbon dioxide in water?

Which of the following combines with haemoglobin in blood? (a) Carbon dioxide (b) carbon monoxide (c) oxygen (d) methane

What is the partial pressure of oxygen and carbon dioxide in atmospheric air ?

What is the partial pressure of oxygen and carbon dioxide in atmospheric air ?

Give a balanced equation for the following conversions: [In one or two steps] Carbon dioxide to carbon.

Convert into mole. (a) 12 g of oxygen gas (b) 20 g of water (c) 22 g of carbon dioxide.

Give reasons for the following: Lime water finds application for testing both carbon dioxide & carbon monoxide gas individually.