(D) The Assertion is incorrect because,according to nuclear reactions,atoms can be created or destroyed (e.g.,in nuclear fission or fusion). The Reaso

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If both the Assertion and Reason are incorrect.

(D) The Assertion is incorrect because,according to nuclear reactions,atoms can be created or destroyed (e.g.,in nuclear fission or fusion). The Reason is also incorrect because,according to Avogadro's Law,equal volumes of all gases under the same conditions of temperature and pressure contain an equal number of molecules,and consequently,an equal number of atoms if the gases are monatomic.

Class 11 Chemistry Some Basic Concepts of Chemistry Laws of chemical combination

Medium

Assertion : Atoms can neither be created nor destroyed.
Reason : Under similar conditions of temperature and pressure,equal volumes of gases do not contain equal numbers of atoms.

AIIMS 2002 All AIIMS

A
If both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.
B
If both Assertion and Reason are correct but Reason is not a correct explanation of the Assertion.
C
If the Assertion is correct but Reason is incorrect.
D
If both the Assertion and Reason are incorrect.

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Class 11

Chemistry Questions

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Some Basic Concepts of Chemistry

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Laws of chemical combination

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AIIMS 2002 Paper All AIIMS years →

$5.06 \ g$ of pure cupric oxide $(CuO)$ on complete reduction gives $4.04 \ g$ of metallic copper. In another experiment,$1.3 \ g$ of metallic copper is dissolved in nitric acid and the resulting solution is carefully dried to yield $1.63 \ g$ of $CuO$. Which law of chemical combination is illustrated by these results?

Medium

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Carbon and oxygen combine to form two oxides,carbon monoxide and carbon dioxide,in which the ratio of the weights of carbon and oxygen is respectively $12 : 16$ and $12 : 32$. These figures illustrate the:

Medium

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From the given information, select the suitable law of chemical combination:
Cupric Carbonate % of $Cu$ % of $C$ % of $O$
Natural sample $51.35$ $9.74$ $38.91$
Synthetic sample $51.35$ $9.74$ $38.91$

MediumKCET 2026

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Which of the following pairs of substances illustrate the law of multiple proportions?

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Which law is followed by the different proportions of oxygen in various oxides of nitrogen?

Easy

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Cupric Carbonate	% of $Cu$	% of $C$	% of $O$
Natural sample	$51.35$	$9.74$	$38.91$
Synthetic sample	$51.35$	$9.74$	$38.91$

Assertion : Atoms can neither be created nor destroyed. Reason : Under similar conditions of temperature and pressure,equal volumes of gases do not contain equal numbers of atoms.

Similar Questions

Carbon and oxygen combine to form two oxides,carbon monoxide and carbon dioxide,in which the ratio of the weights of carbon and oxygen is respectively $12 : 16$ and $12 : 32$. These figures illustrate the:

From the given information, select the suitable law of chemical combination: Cupric Carbonate% of $Cu$% of $C$% of $O$Natural sample$51.35$$9.74$$38.91$Synthetic sample$51.35$$9.74$$38.91$

Which of the following pairs of substances illustrate the law of multiple proportions?

Which law is followed by the different proportions of oxygen in various oxides of nitrogen?

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Assertion : Atoms can neither be created nor destroyed.
Reason : Under similar conditions of temperature and pressure,equal volumes of gases do not contain equal numbers of atoms.

From the given information, select the suitable law of chemical combination:
Cupric Carbonate % of $Cu$ % of $C$ % of $O$
Natural sample $51.35$ $9.74$ $38.91$
Synthetic sample $51.35$ $9.74$ $38.91$