Assertion: Platinum, gold and silver are used to make jewellery.

Reason: Platinum, gold and silver are least reactive metals.

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Both Assertion and Reason are true and Reason is the correct explanation of the Assertion.

Both Assertion and Reason are true but Reason is not the correct explanation of the Assertion.

Assertion is true but Reason is false

Assertion is false but Reason is true

answer is A.

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Detailed Solution

Both Assertion and Reason are true, and Reason is the correct explanation of the Assertion.
Assertion: Platinum (Pt), gold (Au), and silver (Ag) are native elements that are found freely in the earth's crust. Platinum For the following reasons, jewellery is made of gold and silver. They are extremely shiny metals that don't corrode. They may be moulded into any shape or pattern due to their extreme malleability and ductility.
Reason: These metals are purely non-reactive and don't react with air or water. These metals possess high malleable properties, as well as these metals are lustrous. Due to their non-reactive nature, they are widely used in ornament making and are the most valuable metals.

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