Which one of the following statements is false? Explain your choice of answer. a

Question

Which one of the following statements is false? Explain your choice of answer.

a] Slip is difficult in ionic ceramics that do not contain sodium chloride.
(The 1- means a bar over the one)
b] (1 1 1-) and (1- 1- 1) are indistinguishable as slip planes in a single crystal of gold.
c] [1 0 1-] and [1 0 1] are indistinguishable as slip directions in a single crystal of gold.
d] When a single crystal wire of zinc is subjected to a tensile load, it is possible for the resolved shear stress on all slip systems to be less than the critical resolved shear stress.
e] Both the tensile strength and the yield strength of a metal can be increased by alloying.

Explanation / Answer

a) false==== slip is difficult in all ionic ceramics wheather it contain sodium chloride or not b)false ==== just look at the plane indices if you multiply any plane by -1 you will get another that means they are the normal vetors of the same plane having different directions

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