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Hot pin test can be used for testing Bakelite get a very very hot pin from an open flame source, then touch the pin to the item made from Bakelite. Which of the following observations can be made
i) Hot pin will be penetrated into item

ii) It may give off the acid smell

iii) It may give a purple colour burn mark

iv) Hot pin will not be penetrated into item

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i, ii only

ii, iii, iv only

i, ii, iii only

ii, iii only

answer is B.

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Detailed Solution

Hot pin test can give following observations

ii) It may give off the acid smell

iii) It may give a purple colour burn mark

iv) Hot pin will not be penetrated into item.

It is identification test for Bakelite.

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