For micelle formation,which of the following statements are correct?
$A$. Micelle formation is an exothermic process.
$B$. Micelle formation is an endothermic process.
$C$. The entropy change is positive.
$D$. The entropy change is negative.

  • A
    $A$ and $D$ only
  • B
    $A$ and $C$ only
  • C
    $B$ and $C$ only
  • D
    $B$ and $D$ only

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Assertion $A$ : The diameter of colloidal particles in solution should not be much smaller than the wavelength of light to show Tyndall effect.
Reason $R$ : The light scatters in all directions when the size of particles is large enough.
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