Advertisements
Advertisements
Question
State the contributions of John Dalton – towards the development of Chemistry.
Advertisements
Solution
John Dalton
1. He compiled his theory in 1803 known as Dalton’s atomic theory.
2. The main postulates of Dalton’s atomic theory are that “Matter consists of particles called atoms, which are indivisible and cannot be created or destroyed.”
3. The theory was later contradicted in certain aspects by the Modem atomic theory
RELATED QUESTIONS
Give two examples of the following substance.
Medicines
Give two examples of the following substance.
Chemical war weapons
What is the contribution of chemistry in following field?
Industry
Name the scientists who discovered the following:
Safety lamp
Name the scientists who discovered the following:
Elements
Write True or False against the following statement.
Antibiotics are used as preservatives:
Write True or False against the following statement.
D.D.T. is an important fertiliser:
Choose the correct alternative from the choices given below for the following statement:
The chemicals prescribed by a doctor in the treatment of infectious diseases are called
Differentiate between natural fibres & synthetic fibres.
Give reasons for the following
Titanium dioxide is an important ingredient in cosmetics.
