Chemistry Which of the following is not a precious/semi-precious stone? Emerald Ruby Pearl Sapphire Emerald Ruby Pearl Sapphire ANSWER DOWNLOAD EXAMIANS APP
Chemistry 'Vinegar' is a commercial name of Oxalic acid Citric acid Acetic acid Hydrochloric acid Oxalic acid Citric acid Acetic acid Hydrochloric acid ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following is not a natural source of hydrocarbon? Petroleum Coal Mica Natural Gas Petroleum Coal Mica Natural Gas ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which among the following is pure matter ? Air Iron Brass Carbon–dioxide Air Iron Brass Carbon–dioxide ANSWER DOWNLOAD EXAMIANS APP
Chemistry The main buffer system of the human blood is H2CO3 - HCO3 H2CO3 - CO32- NH2CONH2 - NH2CONH+ CH3COOH - CH3COO- H2CO3 - HCO3 H2CO3 - CO32- NH2CONH2 - NH2CONH+ CH3COOH - CH3COO- ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which one of the following is used to restore the colour of old oilpaintings ? Hydrogen peroxide Ozone Sodium peroxide Barium peroxide Hydrogen peroxide Ozone Sodium peroxide Barium peroxide ANSWER DOWNLOAD EXAMIANS APP
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