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The major product of following reaction is : R–C ≡ N O H ) 2 ( ) Bu i ( AlH ) 1 ( 2 2 ⎯ ⎯ ⎯ ⎯ ⎯ → ⎯ − ?

1. RCHO
2. RCOOH
3. RCONH 2
4. RCH 2 NH 2

Correct answer: RCHO

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