Question

According to the law of definite proportions
(a) Matter remains constant
(b) Matter can neither be created nor destroyed matter remains constant
(c) A chemical compound is always made up of the same element combined together in the same fixed proportion matter remains constant (d) All of these​

Answer 1

(c) A chemical compound is always made up of the same elements combined together in the same fixed proportion correctly states the law of definite proportions.

• Law of definite proportions is also known by the name law of constant composition or Proust's law.
• The law states that a particular chemical compound will always have the same constituent elements in a fixed ratio, irrespective of its source or method of production.
• The first two options of question are per the law of conservation of mass.