Which of the following reagents is used to distinguish propene and propyne?

  • A
    $Br_2, CCl_4$
  • B
    Dil. $KMnO_4 / OH^{\Theta}$
  • C
    Conc. $H_2SO_4$
  • D
    $AgNO_3$ in $NH_4OH$

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Identify the alkyne in the following sequence of reactions:

The reagent used in the reaction $R-CH_2-CCl_2-R \xrightarrow{\text{Reagent}} R-C \equiv C-R$ is .............

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What is the product formed when calcium carbide reacts with heavy water?

Which is the most suitable reagent among the following to distinguish compound $(3)$ from the rest of the compounds?
$1. CH_3-C \equiv C-CH_3$
$2. CH_3-CH_2-CH_2-CH_3$
$3. CH_3-CH_2-C \equiv CH$
$4. CH_3-CH=CH_2$

$Alkyne \xrightarrow[{Hg^{2+}}]{{H^+/H_2O}} \text{ketone}$
Which of the following alkynes cannot give a ketone?

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