Question

Dalton's atomic theory successfully explained :
(i) Law of conservation of mass
(ii) Law of constant composition
(iii) Law of radioactivity
(iv) Law of multiple proportions

• A. (i), (ii) and (iii)
• B. (i), (iii) and (iv)
• C. (ii), (iii) and (iv)
• D. (i), (ii) and (iv)

Answer 1

Answer: (D)

(i), (ii) and (iv)

Correct option is (D).

Dalton's atomic theory proposed that all matter was composed of atoms, indivisible and indestructible building blocks. While all atoms of an element were identical, different elements had atoms of different size and mass.

Dalton's atomic theory explains

1. Law of conservation of mass
2. Law of constant composition
3. Law of multiple proportions