Chemistry A balloon filled with helium rises in air because Air exerts an upward force on the balloon The balloon is weightless Helium is less dense than air Helium pushes down on the air below the balloon Air exerts an upward force on the balloon The balloon is weightless Helium is less dense than air Helium pushes down on the air below the balloon ANSWER DOWNLOAD EXAMIANS APP
Chemistry PH scale ranges from 0 – 7 0 – 14 8 – 14 None 0 – 7 0 – 14 8 – 14 None ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following is ozone depleting pesticide ? Methyl bromide D.T. Benzene Ethylene ozonide Methyl bromide D.T. Benzene Ethylene ozonide ANSWER DOWNLOAD EXAMIANS APP
Chemistry The buffer action of blood is due to the presence of CI– and [CO3]2– CI– and [HCO3]– [HCO3]– and H2CO3 HCI and NaCI CI– and [CO3]2– CI– and [HCO3]– [HCO3]– and H2CO3 HCI and NaCI ANSWER DOWNLOAD EXAMIANS APP
Chemistry The sewage obtained from water closets and urinals is known as Sullage Garbage Sanitary waste Industrial waste Sullage Garbage Sanitary waste Industrial waste ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following is usually not an air-pollutant? Sulphur dioxide Hydrocarbons Carbon dioxide Nitrous oxide Sulphur dioxide Hydrocarbons Carbon dioxide Nitrous oxide ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS