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Home » Assertion: Zone refining method is very useful for producing semiconductors. Reason: Semiconductors are of high purity.
Assertion: Zone refining method is very useful for producing semiconductors. Reason: Semiconductors are of high purity.
CBSE | Chemistry | Class 12 | Exercise 1 | General Principles and Processes of Isolation of Elements | NCERT Exemplar
Assertion: Zone refining method is very useful for producing semiconductors. Reason: Semiconductors are of high purity.

(i) Both assertion and reason are true and the reason is the correct explanation of assertion.

(ii) Both assertion and reason are true but the reason is not the correct explanation of assertion.

(iii) The assertion is true but the reason is false.

(iv) The assertion is false but the reason is true.

(v) Assertion and reason both are wrong.

 

Correct Answer: (ii) Both assertion and reason are true but the reason is not the correct explanation of assertion.

Explanation: In the refining process, impure metal rod is heated by electricity until the metal in the burning area melts. Pure metal is collected on the other side of the rod. Repetition of metal and product obtained every time a very pure metal is found. This method is very useful in the production of semiconductors and metals materials with high purity.

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