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Solution


Q.

The incorrect postulates of the Dalton's atomic theory are :

(A) Atoms of different elements differ in mass.

(B) Matter consists of divisible atoms.

(C) Compounds are formed when atoms of different element combine in a fixed ratio.

(D) All the atoms of given element have different properties including mass.

(E) Chemical reactions involve reorganisation of atoms.

Choose the correct answer from the options given below:                     [2024]
1 (B), (D), (E) only  
2 (B), (D) only  
3 (A), (B), (D) only  
4 (C), (D), (E) only  

Ans.

(2)            

According to Dalton's atomic theory:

Atoms are indivisible and atoms of a given element have identical properties including mass.