Chemistry A balloon filled with helium rises in air because Helium pushes down on the air below the balloon The balloon is weightless Helium is less dense than air Air exerts an upward force on the balloon Helium pushes down on the air below the balloon The balloon is weightless Helium is less dense than air Air exerts an upward force on the balloon ANSWER DOWNLOAD EXAMIANS APP
Chemistry Trinitrotoluene is Used to melt metals Used as an abrasive Used to fuse two metals Used as an explosive Used to melt metals Used as an abrasive Used to fuse two metals Used as an explosive ANSWER DOWNLOAD EXAMIANS APP
Chemistry Photo chemical smog is a resultant of the reaction among NO2, O3 and peroxy acetyl nitrate in the presence of Sunlight CO, CO2 and NO2at low temperature CO, O2 and peroxy acetyl nitrate in the presence of Sunlight High concentration of NO2, O3, and CO in the evening NO2, O3 and peroxy acetyl nitrate in the presence of Sunlight CO, CO2 and NO2at low temperature CO, O2 and peroxy acetyl nitrate in the presence of Sunlight High concentration of NO2, O3, and CO in the evening ANSWER DOWNLOAD EXAMIANS APP
Chemistry Chloroform can be used as Anaesthetic Antimalarial Analgesic Antibiotic Anaesthetic Antimalarial Analgesic Antibiotic ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which one of the following elements is least likely to be found in commercial fertilisers? Phosphorous Potassium Silicon Nitrogen Phosphorous Potassium Silicon Nitrogen ANSWER DOWNLOAD EXAMIANS APP
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