Ncert Exercises & Solutions

One of the statements of Dalton's atomic theory is given below

"Compounds are formed when atoms of different elements combine in a fixed ratio"

a. Law of conservation of mass

b. Law of definite proportions

c. Law of multiple proportions

d. Avogadro law

Which of the following laws is not related to this statement?

1. a, and d

2. b, and d

3. c, and b

4. b, and c

Hint: Follow law of conservation of mass

Law of conservation of mass is simply the law of destructibility of matter during physical or chemical changes. Avogadro law states that equal volumes of different gases contain the same number of molecules under similar conditions of temperature and pressure.

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