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Standard X

Chemistry

Physical Properties of Metals

Assertion : E...

Question

Assertion : Electrical cables are made up of aluminium or copper wires Reason: Copper and aluminium are good electrical conductors.

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

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Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion

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Assertion is correct but Reason is incorrect

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Both Assertion and Reason are incorrect

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Solution

The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
Copper and aluminium are metals and have free electron which are responsible for conduction of heat and electricity, hence they are used in making electrical cables.

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Q. Assertion: The compressibility factor for

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and

H e

(1 + \frac{P b}{R T})

Reason: The compressibility factor for

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and

H e

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Assertion – The non-fusible impurities present in iron ore are removed by $C a C O_{3}$ .

Reason: $C a C O_{3}$ which decomposes into $C a O$ and $C O_{2}$ . The $C a O$ formed reacts with $S i O_{2}$ to remove silica

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{SiO}_{2}

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Reason:

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ASSERTION: n-Pentane and n-Hexane belong to a homologous series.

REASON: n-Pentane and n-Hexane belong to the same class of hydrocarbons and they differ by a - $C H_{2}$ - group.

Assertion (A) Order of the reaction can be zero or fractional.

Reason (R) We cannot determine order from balanced chemical equation.

(a) Both assertion and reason are correct and the reason is correct explanation of assertion
(b) Both assertion and reason are correct, but reason does not explain assertion.
(c) Assertion is correct, but reason is incorrect
(d) Both assertion and reason are incorrect
(e) Assertion is incorrect but reason is correct.

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Assertion : Electrical cables are made up of aluminium or copper wires Reason: Copper and aluminium are good electrical conductors.

The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for AssertionCopper and aluminium are metals and have free electron which are responsible for conduction of heat and electricity, hence they are used in making electrical cables.

The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
Copper and aluminium are metals and have free electron which are responsible for conduction of heat and electricity, hence they are used in making electrical cables.