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 hydrogen atoms are there in a molecule of methane?

Option 1: 2

Option 2: 6

Option 3: 4

Option 4: 3

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 : How many fundamental SI units are there?

Option 1: 4

Option 2: 7

Option 3: 5

Option 4: 9

Question : How many calories are there in a joule?

Option 1: 0.24

Option 2: 0.48

Option 3: 0.72

Option 4: 0.96