A. Oxalic acid B. Lactic acid C. Malic acid D. Tartaric acid
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A. Propene B. Chloropropene C. Propyne D. Benzene
A. C-50 B. C-30 C. C-40 D.C-60
A. Ethanol B. Butane C. Benzene D. Alcohol
A. Combusion reaction B. Endothermic reaction C. Displacement reaction D. Exothermic reaction
A. Very strong B. Very weak C. Weaker D. Stronger
A. Blue B. Red C. White D. Green
A. Magnesium B. Beryllium C. Potassium D. Calcium
A. Newlands B. Moseley C. Dobereiner D. Mendeleev