The metal like `Si, Ga` etc., which are used in semiconductors, are purified by ______.

Why are Ge and Si semiconductors ?

The metals used in space technology are purified by _________ method.

Low melting metals like lead and tin are purified by ________.

Assertion: Zone refining method is used to produce pure metals which are used as semiconductors. Reason: Semiconductors are used in highly pure form.

Assertion: Zone refining method is used to produce pure metals which are used as semiconductors. Reason: Semiconductors are used in highly pure form.

Assertion : Zone refining method is used to produce pure metals which are used as semiconductors. Reason : Semiconductors are used in highly pure form.

Pure elemental semiconductors like Si and Ge are called ______.