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Standard X

Chemistry

Concentration of Ore

Assertion :Ex...

Question

Assertion :Extraction of metals from their ores by chemical methods requires the use of reducing agent. Reason: Reducing agent helps to convert the metal oxide from its ore to the metal.

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
Reducing agent helps to convert the metal oxide from its ore to the metal.

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Similar questions

Q. Assertion: Aluminium is used as a reducing agent in the extraction of chromium from its oxide,

C r_{2} O_{3}

.
Reason: Reduction by Aluminium is known as Gold Schmidt thermite process or Aluminothermic process.

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.

Q. Assertion: The impurities such as

{SiO}_{2}

present in iron ore is removed by

{CaCO}_{3}

.

Reason:

CaO

formed by decomposition of

{CaCO}_{3}

reacts with

{SiO}_{2}

to form slag.

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

Q. Assertion: The compressibility factor for

H_{2}

and

H e

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

Reason: The compressibility factor for

H_{2}

and

H e

can be derived from Van der Waal's equation.

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Assertion :Extraction of metals from their ores by chemical methods requires the use of reducing agent. Reason: Reducing agent helps to convert the metal oxide from its ore to the metal.

The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for AssertionReducing agent helps to convert the metal oxide from its ore to the metal.

The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
Reducing agent helps to convert the metal oxide from its ore to the metal.