When a substance X burns in air, it produces an oxide Y, that turns moist blue litmus paper to red. Which of the following observations regarding Y is incorrect?

Y turns turmeric indicator to red.

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Y turns China rose indicator to dark pink.

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Y is an acidic oxide.

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Y reacts with a basic solution to produce salt and water.

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Solution

The correct option is A Y turns turmeric indicator to red.
Since Y turns moist blue litmus paper red, it must be an acidic oxide.

An acidic substance:

Turns China rose indicator dark pink

Has no effect on turmeric indicator

Thus, Y will not turn turmeric indicator red.
Since Y is an acidic oxide, it would undergo a neutralisation reaction.

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Similar questions

An element burns in air to form an oxide.The aqueous solution of this oxide turns blue litmus paper red. State whether the element is a metal or non-metal.Name one such element.

The element Z burns in air to form an oxide.The aqueous solution of this oxide turns blue litmus to red.

(a) carbon

(b) calcium

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