f centre can't be observed if
1.NaCl is heated in inert condition.
2.KCl is heated in potassium vapour environment.
3.point defect is present.
4.all are correct.
5.all are incorrect.
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Answer:
all are correct
F centre can't be observed if
1. NaCl is heated in inert condition.
2. KCl is heated in potassium vapour environment.
3.point defect is present.
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