Question

The foundation for the law of chemical combination was laid by:

• A. Dalton
• B. Proust
• C. Democritus
• D. Lavoisier

Answer 1

The correct option is D

Lavoisier

Explanation for correct option:

Option D: Lavoisier

1. The foundation for the law of chemical combination was laid by Lavoisier.
2. The law of chemical combination given by Lavoisier is known as Law of conservation of mass.
3. The law of conservation of mass states that mass cannot be created nor be destroyed in a chemical reaction.
4. The mass remains constant in any chemical reaction.

Explanation for incorrect option:

Option A: Dalton framed the atomic theory which stated that all matter are made up of small particles called Atoms.

Option B: Proust’s framed the law of definite proportions, in which he stated chemical compounds are made up of elements that are present in a fixed ratio.

Option C: Democritus proposed the early idea that matter is made up of tiny indivisible particles.

Hence, The foundation for the law of chemical combination was laid by , option (d) Lavoisier.