Chemistry A balloon filled with helium rises in air because Helium pushes down on the air below the balloon The balloon is weightless Air exerts an upward force on the balloon Helium is less dense than air Helium pushes down on the air below the balloon The balloon is weightless Air exerts an upward force on the balloon Helium is less dense than air ANSWER DOWNLOAD EXAMIANS APP
Chemistry Global warming is mainly due to accumulation of Oxides of nitrogen Carbon dioxide Carbon monoxide Oxides of sulphur Oxides of nitrogen Carbon dioxide Carbon monoxide Oxides of sulphur ANSWER DOWNLOAD EXAMIANS APP
Chemistry The pair of compounds used as anaesthetic in medicines : Ether, Ammonia Nitrogen dioxide, ether Chloroform, Nitrogen dioxide Nitrous oxide, Chloroform Ether, Ammonia Nitrogen dioxide, ether Chloroform, Nitrogen dioxide Nitrous oxide, Chloroform ANSWER DOWNLOAD EXAMIANS APP
Chemistry The natural resource, known as black gold is Lead Platinum Coal Tin Lead Platinum Coal Tin ANSWER DOWNLOAD EXAMIANS APP
Chemistry What is the chemical symbol of mercury None of these Hg Mg Mr None of these Hg Mg Mr ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following is colourless ? Sulphur Oxygen Chlorine Phosphorus Sulphur Oxygen Chlorine Phosphorus ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS