Which of the following statement about a compound is incorrect?(I) A molecule of a compound has atom of different elements.(II) A compound cannot be separated into its constituent elements by physical method of separation.(III) A compound retained the physical properties of its constituent.(IV) The ratio of atoms of different element in a compound is fixed.

Which of the following statement about a compound is incorrect?(I) A m

1.	Which of the following statement about a compound is incorrect?(I) A molecule of a compound has atom of different elements.(II) A compound cannot be separated into its constituent elements by physical method of separation.(III) A compound retained the physical properties of its constituent.(IV) The ratio of atoms of different element in a compound is fixed.
Answer» (III) because a compound doesn’t retain the physical properties of its constituents.