Assertion: Copper utensils generally get a greenish colour on them over time.
Reason: When copper comes in contact with air and moisture, it forms a greenish-colored compound on the surface.

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Both assertion and reason are true, and the reason is the correct explanation of the assertion.

Both assertion and reason are true, but the reason is not the correct explanation of the assertion.

The assertion is true, and the reason is false.

Both assertion and reason are false.

answer is A.

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Detailed Solution

The assertion in the question is correct. Copper utensils generally develop a greenish color on their surface over time due to a process called oxidation. When copper comes in contact with air and moisture, it reacts with them to form a layer of copper hydroxide, which is green in color. This process is also known as patination, and it is a natural and harmless process that does not affect the quality of the copper.

The reason given in the question is also correct. When copper comes into contact with air and moisture, it forms a greenish-colored compound on the surface due to the chemical reaction between copper and oxygen in the air. The resulting copper hydroxide is responsible for the greenish color of the copper surface.

Therefore, the correct answer to the question is option A, which states that both the assertion and reason are true, and the reason is the correct explanation of the assertion.

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