Chemistry Combustion of a candle is a/an Physical change Photochemical reaction Exothermic reaction Endothermic reaction Physical change Photochemical reaction Exothermic reaction Endothermic reaction ANSWER DOWNLOAD EXAMIANS APP
Chemistry The lowest layer of earth's atmosphere is Mesosphere Troposphere Stratosphere Ionosphere Mesosphere Troposphere Stratosphere Ionosphere ANSWER DOWNLOAD EXAMIANS APP
Chemistry Oxygen has (+) oxidation number only in H2O (2) N2O OF2 C12O H2O (2) N2O OF2 C12O ANSWER DOWNLOAD EXAMIANS APP
Chemistry Electrolysis of an aqueous solution of copper sulphate using copper electrodes gives Copper at anode and oxygen at cathode. Copper at cathode and oxygen at anode Hydrogen at cathode and oxygen at anode Copper at cathode and anodes dissolve to give copper Copper at anode and oxygen at cathode. Copper at cathode and oxygen at anode Hydrogen at cathode and oxygen at anode Copper at cathode and anodes dissolve to give copper ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following is a natural dye ? Alizarin Phenolphthalein Aniline blue Crystal violet Alizarin Phenolphthalein Aniline blue Crystal violet ANSWER DOWNLOAD EXAMIANS APP
Chemistry The polymerisation of which often following is used in manufacturing of polythene in industry ? Ethylene Acetylene Methane Styrene Ethylene Acetylene Methane Styrene ANSWER DOWNLOAD EXAMIANS APP
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