Dalton's atomic theory successfully explained (i) Law of conservation of mass (ii) Law of constant composition (iii) Law of radioactivity (iv) Law of multiple proportion

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MCQ (Single)Dalton's Atomic TheoryDalton's Atomic TheoryNCERT Exemplar

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Match the names of the Scientists given in column A with their contributions towards the understanding of the atomic structure as given in column B (A) (B) (a) Ernest Rutherford (i) Indivisibility of atoms (b) J.J.Thomson (ii) Stationary orbits (c) Dalton (iii) Concept of nucleus (d) Neils Bohr (iv) Discovery of electrons (e) James Chadwick (v) Atomic number (f) E. Goldstein (vi) Neutron (g) Mosley (vii) Canal rays

TextDalton's Atomic TheoryDiscovery of Electron by J.J. ThomsonDiscovery of Neutron by Chadwick

Bohr's Model of Atom - Basic Structure and Postulates

Dalton's Atomic Theory

Discovery of Electron by J.J. Thomson

Discovery of Neutron by Chadwick

Rutherford's Nuclear Model of Atom

Bohr's Model of Atom - Basic Structure and Postulates

Assertion (A): 2 g of hydrogen combines with 16 g of oxygen to form 18 g of water. Reason (R): According to Dalton's Atomic Theory, atoms combine in a simple whole number ratio by mass to form compounds. Choose the correct option:

Assertion-ReasonDalton's Atomic Theory