जस्तेदार लोहे की चादरें जं – McqOptions

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1.	जस्तेदार लोहे की चादरें जंग से बची रहती हैं, क्योंकि उन पर निम्नलिखित की परत विद्यमान होती है -
A.	सीसा
B.	जंग
C.	यशद
D.	क्रोमियम
Answer» D. क्रोमियम

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