Which of the following statements about a compound is incorrect?
(a) A molecule of a compound has atoms of different elements.
(b) A compound cannot be separated into its constituent elements by physical methods of separation.
(c) A compound retains the physical properties of its constituent elements.
(d) The ratio of atoms of different elements in a compound is fixed.
Answers
Answer : The incorrect option is, (c) A compound retains the physical properties of its constituent elements.
Explanation :
Pure substance : It is defined as a substance that is made by the combination of only one type of atom or only one type of molecule. The pure substance can not be separated by simple physical methods.
Compound : It is a pure substance which is made from atoms of different elements combined together in a fixed ratio by mass.
The constituents of compound can not be separated into simpler substances by physical methods. They can be separated by chemical methods.
A compound can not retains the physical properties of its constituent elements.
Element : It is a pure substance which is composed of atoms of similar elements.
Hence, the incorrect option is, (c)