Assertion:- Gold and platinum are used to make ornaments.

Reason:- Gold and platinum do not corrode easily.

Assertion: Correct
Reason: Correct
Reason is the correct explanation of assertion

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Assertion: Incorrect
Reason: Correct

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Assertion: Incorrect
Reason: Incorrect

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Assertion: Correct
Reason: Incorrect
Reason is the correct explanation of assertion.

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Solution

The correct option is A Assertion: Correct
Reason: Correct
Reason is the correct explanation of assertion

Gold and platinum are metals. They are malleable, ductile and lustrous ( shiny surface).

Gold and platinum are used to make ornaments because they are unreactive metals.

So, they do not corrode and also maintain their lustre for a long time.

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Similar questions

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 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.

Assertion (A) Order and molecularity are same.

Reason (R) Order is determined experimentally and molecularity is the sum of the stoichimetric coeffcient of rate determining elementary step.

Assertion (A) All collision of reactant molecules lead to product formation.

Reason (R) Only those collisions in which molecules have correct orientation and sufficient kinetic energy lead to compound formation.

Q. Assertion : Bond order of

H_{2}^{+} is 0.5.

Reason : Electrons are removed from the antibonding molecular orbital from

H_{2} .

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Assertion:- Gold and platinum are used to make ornaments. Reason:- Gold and platinum do not corrode easily.

Assertion:- Gold and platinum are used to make ornaments.

Reason:- Gold and platinum do not corrode easily.