A. Lead B. Zinc C. Silver D. Mercury
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A. Mercurous chloride B. Zinc chloride C. Mercuric chloride D. Aluminum chloride
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A. Cast iron and pig iron B. Cast iron and steel C. Pig iron and steel D. Pig iron and wrought iron
A. P-P transition B. d-d transition C. Paired electrons D. None of these
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A. Covalent B. Ionic C. Coordinate D. None of the above
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A. Metals B. Non-metals C. Transition elements D. Rare earths
A. Carbon filters B. Compressed air C. Limestone D. Sulphuric acid