Assertion :1- butyne forms white precipitate with ammoniacal silver nitrate solution while 2- butyne does not Reason: 1- butyne has a acidic hydrogen

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
Tollen's reagent (ammonical silver) $A g (N H_{3})^{2 +}$ reacts with 1-alkyne (having acidic hydrogen) and give white ppt.

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