Chemistry The main buffer system of the human blood is NH2CONH2 - NH2CONH+ CH3COOH - CH3COO- H2CO3 - HCO3 H2CO3 - CO32- NH2CONH2 - NH2CONH+ CH3COOH - CH3COO- H2CO3 - HCO3 H2CO3 - CO32- ANSWER DOWNLOAD EXAMIANS APP
Chemistry The most abundant element in the human body is Oxygen Nitrogen Iron Carbon Oxygen Nitrogen Iron Carbon ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which gas is used as fire extinguisher ? Sulphur dioxide Carbon suboxide Carbon monoxide Carbon dioxide Sulphur dioxide Carbon suboxide Carbon monoxide Carbon dioxide ANSWER DOWNLOAD EXAMIANS APP
Chemistry Global warming is mainly due to accumulation of Carbon dioxide Oxides of sulphur Oxides of nitrogen Carbon monoxide Carbon dioxide Oxides of sulphur Oxides of nitrogen Carbon monoxide ANSWER DOWNLOAD EXAMIANS APP
Chemistry The rusting of iron is a/an Electrochemical change Electrical change None of these Physical change Electrochemical change Electrical change None of these Physical change ANSWER DOWNLOAD EXAMIANS APP
Chemistry When iron rusts, its weight Remains the same Decreases Increases First increases and then decreases Remains the same Decreases Increases First increases and then decreases ANSWER DOWNLOAD EXAMIANS APP
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