Mass Transfer
With increase in temperature, the leaching rate increases due to

Neither A nor B
Increased diffusivity
Decreased liquid viscosity
Both A & B

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Mass Transfer
An example of elutioh is

Recovery of vegetable oils from seeds
Dissolution of tannin out of tree barks by water
Separation of uranium oxide from its ore by H₂SO₄ in a Pachuca tank
Separation of sugar from sugar beet by hot water

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