A. Trigonal B. Tetrahedral C. Linear D. None of these
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A. Argon B. Oxygen C. Carbon dioxide D. Carbon monoxide
A. Initiator B. Catalyst C. Promoter D. Auto-catalyst
A. Stronger oxidant B. Stronger reductant C. Easily reduced D. Can’t be predicted
A. Anhydrite B. Bauxite C. Corundum D. Diaspore
A. Na B. Li C. Mg D. Ca
A. Normal elements B. Transition elements C. Alkaline earth metals D. Alkali metals
A. Ethane B. Nitroethane C. Ethylnitrite D. Ethylisocyanide
A. Methanal B. Ethanal C. Propanal D. Butanal
A. Directly B. Inversely C. Squarely D. None