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Asked: 2020-05-09T19:41:19+05:30 In:

GATE MT 2020 Q25. Determine the correctness or otherwise of the following Assertion [a] and the Reason [r] Assertion [a]: The are of homogenization in a dilute substitutional solid Solution of B in A is controlled by the diffusivity of B Reason [r]: Atomic migration cannot occur along dislocations and grain boundaries.

Poll Results

20.51%Both [a] and [r] true [r] is not the correct reason for [a] ( 8 voters )
28.21%Both [a] and [r] are true and [r] is the correct reason for [a] ( 11 voters )
38.46%[a] is true but [r] is false ( 15 voters )
12.82%Both [a] and [r] are false ( 5 voters )
Based On 39 Votes

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GATE MT 2020 Q25. Determine the correctness or otherwise of the following Assertion [a] and the Reason [r] Assertion [a]: The are of homogenization in a dilute substitutional solid Solution of B in A is controlled by the diffusivity of B Reason [r]: Atomic migration cannot occur along dislocations and grain boundaries.
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      diffusion across dislocation and grain boundary will depend on the deriving force. Diffusion across dislocation and grain boundary possible but the rate is slower

      diffusion across
      dislocation and grain boundary will depend on the deriving force.
      Diffusion across dislocation and grain boundary possible but the rate is slower

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