Give two uses of:

(a) Silicon

(b) Antimony

(c) Tungsten

(d) Germanium

(a) Two uses of silicon are:

1. It is used to make water proof materials like bags, umbrellas, raincoats etc.
2. Highly pure silicon is used in making microchips for computers, transistors, solar cells, rectifiers.

(b) Two uses of antimony are:

1. It is used in electric industry to make semiconductor devices.
2. It is used in printing presses as type metal.

(c) Two uses of tungsten are:

1. It is used in making filament of bulb.
2. It is used in making electrodes.

(d) Two uses of Germanium are:

1. It is used as a semi-conductor.
2. It is used as a transistor in many electronic appliances when mixed with arsenic, gallium, antimony, etc.