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Oil cup in Pensky-marten’s apparatus is made with __________

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Oil cup in Pensky-marten’s apparatus is made with __________

(a) Brass

(b) Iron

(c) Copper

(d) Steel

This question was posed to me in my homework.

My question is from Lubricants General Questions topic in division Lubricants of Applied Chemistry

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The correct choice is (a) Brass

To explain: Oil cup in Pensky-marten’s apparatus is made with the brass. Brass does not undergo rusting. The oil cup is made with metals that do not undergo rusting. Iron, copper and steel undergo rusting and having equivalent conductivity.

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