Chemistry · Structure of Atom
JEE Main 2024 — 5 April, Shift 1 — Question 59
The incorrect postulates of 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 elements combine in a fixed ratio. (D) All the atoms of a given element have different properties including mass. (E) Chemical reactions involve reorganisation of atoms.
Choose the correct answer from the options given below:
- Option A:
(B), (D), (E) only
- Option B:
(A), (B), (D) only
- Option C:
(C), (D), (E) only
- Option D:Correct
(B), (D) only
Answer: D
Step-by-step solution
Dalton's atomic theory assumes that
Atoms are indivisible
Atoms of the same element are identical
Compounds form in fixed ratios
Chemical reactions involve rearrangement of atoms
Evaluating statements, we have
(A) Correct (B) Incorrect (C) Correct (D) Incorrect (E) Correct
Thus, the incorrect postulates are .
Answer key and solution verified before publishing.
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- Exam
- JEE Main 2024
- Paper
- 5 April, Shift 1
- Subject
- Chemistry
- Chapter
- Structure of Atom
- Topic
- Primitive Models of Atom