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Propyne and propene can be distinguished...

Propyne and propene can be distinguished by ……….

A

Conc. `H_(2)SO_(4)`

B

`Br_(2)` in `C Cl_(4)`

C

Dil. `KMnO_(4)`

D

`AgNO_(3)` in ammonia

Text Solution

Verified by Experts

The correct Answer is:
D
Terminal alkyne gives white ppt with ammonical sliver nitrate.
`CH_(3)-C-=CH+NH_(3)+AgNO_(3) rarr underset("white ppt.")(CH_(3))-C-=C.Ag+NH_(4)NO_(3)`
while propene does not give any reaction with ammonical `AgNO_(3)` due to absence of acidic hydrogen.
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Knowledge Check

  • 1-propanol and 2-propanol can be best distinguished by :

    A
    oxidation with alkaline `KMnO_(4)` followed by reaction with Fehling's solution
    B
    oxidation with acidic dichromate followed by reaction with Fehling's solution
    C
    oxidation by heating with copper followed by reaction with Fehling's solution
    D
    oxidation with conc. `H_(2)SO_(4)` followed by reaction with Fehling's solution
    • RESONANCE ENGLISH-REDUCTION, OXIDATION & HYDROLYSIS REACTIONS-Additional problems for self Practice (Part-1)
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