Question

Which of the following are the laws of chemical combination?

• A. Matter can neither be created nor be destroyed in a chemical reaction
• B. Atoms are indivisible and indestructible
• C. In a chemical substance, atoms of different elements are in definite proportions
• D. It is the atom in an element that takes part in a chemical reaction

Answer 1

Answer: (A), (C)

In a chemical substance, atoms of different elements are in definite proportions

According to the laws of chemical combination,

• Matter can neither be created nor be destroyed in a chemical reaction.
• In a chemical substance, the elements are in definite proportions.