Chemistry What is the chemical name for ‘Baking Soda’ ? Sodium nitrite Sodium nitrate Sodium carbonate Sodium bicarbonate Sodium nitrite Sodium nitrate Sodium carbonate Sodium bicarbonate ANSWER DOWNLOAD EXAMIANS APP
Chemistry The main buffer system of the human blood is H2CO3 - HCO3 NH2CONH2 - NH2CONH+ CH3COOH - CH3COO- H2CO3 - CO32- H2CO3 - HCO3 NH2CONH2 - NH2CONH+ CH3COOH - CH3COO- H2CO3 - CO32- ANSWER DOWNLOAD EXAMIANS APP
Chemistry The ionisation energy of hydrogen atom in the ground state is x KJ. The energy required for an electron to jump from 2nd orbit to 3rd orbit is 7.2 x x/6 5x/36 5x 7.2 x x/6 5x/36 5x ANSWER DOWNLOAD EXAMIANS APP
Chemistry What material is used to make electric heater coil ? Iron Nichrome Silver Copper Iron Nichrome Silver Copper ANSWER DOWNLOAD EXAMIANS APP
Chemistry Greenhouse effect is caused by Nitrogen Carbon dioxide Nitrogen dioxide Carbon monoxide Nitrogen Carbon dioxide Nitrogen dioxide Carbon monoxide ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following pairs of materials serves as electrodes in chargeable batteries commonly used in devices such as torch lights, electric shavers, etc. ? Lead peroxide and lead Iron and cadmium Nickel and cadmium Zinc and carbon Lead peroxide and lead Iron and cadmium Nickel and cadmium Zinc and carbon ANSWER DOWNLOAD EXAMIANS APP
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