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Q281) The protection of steel by chrome plating is due to [ MP PMT 2001]




SOLUTION


Answer: (c)


Q282) Zinc and mercury do not show variable valency like d-block elements because [ MP PMT 2000]




SOLUTION


Answer: (b)


Q283) The final step in the metallurgical extraction of Cu metal from Cu pyrites takes place in a Bessemer converter. the reaction taking place is [ CPMT 2000]



SOLUTION


Answer:(c)



Q284) Which of the following is major impurity in pig iron? [ AFMC 2000]



SOLUTION


Answer: (d)


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