Chemistry Which metal does not undergo corrosion due to the formation of oxide layer? Copper Aluminium Zinc Iron Copper Aluminium Zinc Iron ANSWER DOWNLOAD EXAMIANS APP
Chemistry Conduction band electrons have more mobility than holes because they Have negative charge Are lighter Need less energy to move them Experience collision less frequently Have negative charge Are lighter Need less energy to move them Experience collision less frequently ANSWER DOWNLOAD EXAMIANS APP
Chemistry Baking soda is : Sodium carbonate Sodium hydroxide Potassium carbonate Sodium bicarbonate Sodium carbonate Sodium hydroxide Potassium carbonate Sodium bicarbonate ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which is known as carbolic acid? Acetic acid Phenol Oxalic acid Ethanol Acetic acid Phenol Oxalic acid Ethanol ANSWER DOWNLOAD EXAMIANS APP
Chemistry Heating of a ore below its melting point in the absence of air is known as Smelting Calcination Roasting Refining Smelting Calcination Roasting Refining ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following in automobile exhaust can cause cancer? Lead Oxides of nitrogen Carbon monoxide Polyclinic hydrocarbons Lead Oxides of nitrogen Carbon monoxide Polyclinic hydrocarbons ANSWER DOWNLOAD EXAMIANS APP
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