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Question (31)

QN007291

Which statement about atoms was later proven incorrect?

(A) Atoms combine to form compounds
(B) Atoms are indivisible
(C) Atoms rearrange during reactions
(D) Atoms have mass

Correct Answer: B

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Question (32)

QN007292

According to Dalton, atoms of different elements combine to form:

(A) Mixtures only
(B) Compounds
(C) Electrons
(D) Nuclei

Correct Answer: B

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Question (33)

QN007293

If carbon and oxygen combine to form carbon dioxide, the atoms combine in:

(A) Fixed ratio
(B) Variable ratio
(C) Infinite ratio
(D) Equal masses only

Correct Answer: A

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Question (34)

QN007294

Which statement correctly explains conservation of mass using Dalton’s theory?

(A) Atoms are destroyed in reactions
(B) New atoms are formed from energy
(C) Atoms are rearranged but not destroyed
(D) Molecules vanish during reactions

Correct Answer: C

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Question (35)

QN007295

Dalton’s Atomic Theory mainly deals with:

(A) Internal structure of atom
(B) Composition and behaviour of atoms in reactions
(C) Electric charge on electrons
(D) Nuclear stability

Correct Answer: B

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Question (36)

QN007296

Which concept of Dalton’s theory explains why water always has fixed composition?

(A) Atoms are indivisible
(B) Atoms combine in fixed ratios
(C) Atoms are spherical
(D) Atoms have no mass

Correct Answer: B

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Question (37)

QN007297

According to Dalton, chemical reactions involve:

(A) Creation of atoms
(B) Destruction of atoms
(C) Rearrangement of atoms
(D) Splitting of nuclei

Correct Answer: C

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Question (38)

QN007298

Which example best illustrates whole-number combination of atoms?

(A) CO₂
(B) H₁.₇O
(C) Na₀.₃Cl
(D) O₁.₂H

Correct Answer: A

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Question (39)

QN007299

Dalton’s Atomic Theory was important because it:

(A) Introduced modern nuclear model
(B) Provided scientific explanation for chemical laws
(C) Discovered electrons
(D) Explained radioactivity

Correct Answer: B

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Question (40)

QN007300

The smallest particle that takes part in chemical reactions according to Dalton is:

(A) Molecule
(B) Cell
(C) Atom
(D) Electron

Correct Answer: C

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Question (31)

Which statement about atoms was later proven incorrect?

Explanation:

Link:

Question (32)

According to Dalton, atoms of different elements combine to form:

Explanation:

Link:

Question (33)

If carbon and oxygen combine to form carbon dioxide, the atoms combine in:

Explanation:

Link:

Question (34)

Which statement correctly explains conservation of mass using Dalton’s theory?

Explanation:

Link:

Question (35)

Dalton’s Atomic Theory mainly deals with:

Explanation:

Link:

Question (36)

Which concept of Dalton’s theory explains why water always has fixed composition?

Explanation:

Link:

Question (37)

According to Dalton, chemical reactions involve:

Explanation:

Link:

Question (38)

Which example best illustrates whole-number combination of atoms?

Explanation:

Link:

Question (39)

Dalton’s Atomic Theory was important because it:

Explanation:

Link:

Question (40)

The smallest particle that takes part in chemical reactions according to Dalton is:

Explanation:

Link:

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