$A$ hydrocarbon '$X$' with formula $C_6H_8$ uses two moles of $H_2$ on catalytic hydrogenation of its one mole. On ozonolysis,'$X$' yields two moles of methane dicarbaldehyde (malonaldehyde). The hydrocarbon '$X$' is :

  • A
    hexa$-1, 3, 5-$triene
  • B
    $1-$methylcyclopenta$-1, 4-$diene
  • C
    cyclohexa$-1, 3-$diene
  • D
    cyclohexa$-1, 4-$diene

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Similar Questions

$A$ and $B$ respectively are:
$A \xrightarrow[(2) Zn-H_2O]{(1) O_3} \text{Ethane-}1,2\text{-dicarbaldehyde} + \text{Glyoxal}$
$B \xrightarrow[(2) Zn-H_2O]{(1) O_3} 5\text{-oxohexanal}$

Final product formed on reduction of glycerol by hydroiodic acid is

An alkene $X$ $(C_6H_{12})$ on ozonolysis gives acetaldehyde and ethyl methyl ketone. What is the product formed when $X$ reacts with $HBr$?

The reaction is given as:
$(CH_3)_2C=C(CH_3)_2 + (CH_3)_3N^{+}-O^{-} + H_2O \xrightarrow{OsO_4 (10^{-4} \text{ mole})} A + (CH_3)_3N$
Product $(A)$ is:

Assertion $(A)$: Propene on addition with hydrogen bromide in the presence of peroxide gives $1-$bromopropane as the major product.
Reason $(R)$: $1-$bromopropane is the major product because it is formed through the stable carbocation.

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