Yes, it is the correct answer. They are ductile and that is why they can be easily drawn into wires.

Bromine is the only non-metal that occurs in a liquid state.

All of the above options are correct.

Magnesium is used in fireworks because when it is ignited in air, it burns with a white flame.

Silver iodide is used in photography because it darkens when exposed to light.

The purity of 22 carat gold is 91.67%.

Duralumin is an alloy of aluminium, copper, magnesium and manganese. It is used in making bodies of aircraft.

Gypsum is the main constituent used in the manufacture of cement. Cement is made from clay, limestone and gypsum.

Plaster of Paris is used for making moulds and statues.

Ca(OCl)Cl is the chemical formula of bleaching powder.

Methane is the smallest hydrocarbon.

Butane and propane are the main constituents of LPG gas.

Starch is present in rice.

Boredeaux is a mixture made from copper sulphate and calcium hydroxide and it is used to prevent fungus attack in potato.

Phosphatic  fertiliser is necessary for growth of roots and formation of seeds.

Saponification is the process of heating oils or fats with sodium hydroxide to form sodium salts of the respective fatty acids.

Polymerisation is the process of linking together small polymers to form a large polymer.

Cobalt oxide is used to prepare blue glass.

A mixture of cement, sand and water is called mortar.

A homogeneous mixture of a metal with a non-metal is called an alloy.

The process of cooling glass articles slowly to prevent brittleness is called annealing.

Thermosetting plastic, once set after being melted, cannot be moulded again. Bakelite is very hard and a good electrical insulator.

The main constituents of carbohydrate are carbon, hydrogen and oxygen.

Galvanised iron is coated with zinc.

Soaps form scum with hard water.

Protein is known as the building block of life.

Yes, it is the correct answer. Aluminium is the most abundant metal in the Earth's crust. Percentage of aluminium in the Earth's crust is 8%.

A mixture of oxygen and helium is used by deep divers for respiration.

Polyvinyl chloride (PVC) is used for covering electric wires. Bakelite is used in making buttons, plugs, switches and other electrical fittings.

Diamond is the allotrope of carbon and it is the hardest known naturally occurring substance.