Chemistry The atomic number of carbon is 6 and its atomic mass is 12. How many are there protons in the nucleus of carbon ? 18 Zero 6 12 18 Zero 6 12 ANSWER DOWNLOAD EXAMIANS APP
Chemistry The chemical name of quartz is Sodium silicate Calcium oxide Sodium phosphate Calcium phosphate Sodium silicate Calcium oxide Sodium phosphate Calcium phosphate ANSWER DOWNLOAD EXAMIANS APP
Chemistry Most poisonous pollutant in water is Detergent Phosphate Zinc Arsenic Detergent Phosphate Zinc Arsenic ANSWER DOWNLOAD EXAMIANS APP
Chemistry Stains of rust on clothes can be removed by : Oxalic acid H2O2 Alcohol Petrol Oxalic acid H2O2 Alcohol Petrol ANSWER DOWNLOAD EXAMIANS APP
Chemistry When there are two electrons in the same orbital, they have: Same or opposite spin No spin Opposite spin Same spin Same or opposite spin No spin Opposite spin Same spin ANSWER DOWNLOAD EXAMIANS APP
Chemistry Major gaseous pollutant of the thermal power station is H2 S SO2 NO2 NH3 H2 S SO2 NO2 NH3 ANSWER DOWNLOAD EXAMIANS APP
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