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For the reaction: What are X and R respectively in the given reaction?

• (a)X: Acetaldehyde, R: methyl
• (b)X: Formaldehyde, R: methyl
• (c)X: Acetaldehyde, R: ethyl
• (d)X: Formaldehyde, R: ethyl

Answer

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From ISC 2025 Practice Chemistry, question 3.