Question

1. Which postulate of Dalton's atomic theory is the result of:-
(a) Law of conservation of mass
(b) Law of definite proportions

2. What are the drawbacks of Dalton's atomic theory ?

Answer 1

law of definitely proportion.
Dalton atomic theory not possible for all elements.

Answer 2

a, matter neither created nor destroyed
b, the number and kind of atoms in a given compound is fixed
Dalton said that the atom can not be broken into simpler substance
Dalton said that all atoms of an element have same mass
He said that the different elements have different masses