Chemistry Which of the following is not a precious/semi-precious stone? Sapphire Emerald Pearl Ruby Sapphire Emerald Pearl Ruby ANSWER DOWNLOAD EXAMIANS APP
Chemistry The main constituent of biogas is Acetic acid Methane Methyl alcohol Oxygen Acetic acid Methane Methyl alcohol Oxygen ANSWER DOWNLOAD EXAMIANS APP
Chemistry The first metal used by man was gold iron copper bronze gold iron copper bronze ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following is used to remove ink and rust stains on cloth? Ether Oxalic acid Alcohol Kerosene oil Ether Oxalic acid Alcohol Kerosene oil ANSWER DOWNLOAD EXAMIANS APP
Chemistry Iron is extracted from Bauxite Cinnabar Dolomite Haematite Bauxite Cinnabar Dolomite Haematite ANSWER DOWNLOAD EXAMIANS APP
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