Question : How many oxygen atoms are there in a molecule of acetic acid?

Option 1: 1

Option 2: 2

Option 3: 4

Option 4: 3

Question : How many oxygen atoms are there in an acetone molecule?

Option 1: 3

Option 2: 1

Option 3: 2

Option 4: 4

Question : What is the number of hydrogen atoms in a molecule of calcium bicarbonate?

Option 1: 0

Option 2: 1

Option 3: 2

Option 4: 4

Question : How many isotopes of hydrogen elements are there?

Option 1: 2

Option 2: 3

Option 3: 4

Option 4: None of the options is correct

Question : When Hydrogen starts burning in air ,it produces?

Option 1: Ammonia

Option 2: water

Option 3: Methane

Option 4: Carbon dioxide