Organic Chemistry Questions and Answers Pdf - 1

Question: 1

What is a reactant in a chemical equation?

Answer:

Reactant is the substance that take part in a chemical reaction.

Question: 2

Write any two limitations of Dalton’s atomic theory?

Answer:

1. Atom is no longer considered as the smallest indivisible particle.

2. Substances made up of same kind of atoms may have different properties.

Question: 3

Write the properties of neutrons?

Answer:

1. Neutron is a neutral particle, that is, it carries no charge.

2. It has mass equal to that of a proton that is 1.6 x 10^-24 g.

Question: 4

State the Law of Conservation of Mass?

Answer:

The law states that during any chemical change, the total mass of the products is equal to the total mass of the reactants.

Question: 5

Define valency of an element with respect to hydrogen?

Answer:

Valency of an element is defined as the number of hydrogen atoms which combine with one atom of it.