100% copper is obtained from crude copper by

100% copper is obtained from crude copper by
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100% copper is obtained from crude copper by A. Zone refining B. electrorefining C. liqation D. poling
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Crude oils containing more than __________ kg of total salts (expressed in terms of NaCl) per thousand barrel is called a 'salty crude'. (A) 1 (B) 5 (C) 15 (D) 25

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The characterisation factor of a crude oil is calculated as 12.5. It meansthat; it is(A) Paraffinic(B) Naphthenic(C) Intermediate(D) None of these

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Last Answer : (B) 3

Crude oil produced by Indian oil fields are predominantly __________ in nature. (A) Paraffinic (B) Naphthenic (C) Asphaltic (D) Mixed base

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