Non-steady State Diffusion MCQ’s

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This set of Materials Science Multiple Choice Questions & Answers (MCQs) focuses on “Non-steady State Diffusion”.

1. Which of the following will diffuse the fastest in iron?
a) W
b) C
c) H
d) He

2. Which of the following law is a partial differential equation?
a) Fick’s first law
b) Fick’s second law
c) Bragg’s law
d) Charles’s law

3. Which of the following law is used to non-steady state diffusion?
a) Fick’s first law
b) Fick’s second law
c) Bragg’s law
d) Charles’s law

4. Which of the following operator is used and on which side of Fick’s second law’s equation?
a) Laplacian operator, right hand side
b) Laplacian operator, left hand side
c) Curl operator, left hand side
d) Gradient, left hand side

5. Concentration gradient varies with time for which of the following processes?
a) Non-steady state diffusion
b) Osmosis
c) Steady state diffusion
d) Filter

6. Gaussian error function in denoted as ef.
a) True
b) False

7. What is the dimension of d2c/dx2?
a) cm3
b) cm5
c) cm-3
d) cm-5

8. In non-steady diffusion, a type of atom accumulates or depletes from a region.
a) True
b) False

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