The most abundant element in the earth crust is
Oxygen

Glass is mostly produced by heating to about 1400C
Limestone, Silica and Soda Ash

Fats and their derivatives occurring in living systems are collectively known as
Lipids

Solder is an alloy of
Lead and Tin

Iodine is administered to patients suffering from
Giotre

The process of bleaching by Chlorine is called
Oxidation

The Combustible material on the tip of a safety match stick is
Antimony Sulphide

Which term is used to express purity of gold ?
24 carats

German silver is an alloy of
Copper, Nickel and Zinc

Which is the hardest metal ?
Tungsten