MCQ
$ .......... $ are substances which do not allow electricity to pass through them :
- ✓Insulators
- BConductors
- CSemi $-$ conductors
- DNone of these
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| Column A | Column B |
| (i) Cretinism | (a) Over secretion of growth hormone |
| (ii) Gigantism | (b) Under secretion of ADH |
| (iii) Exophthalmia | (c) Over secretion of thyroxin |
| (iv) Diabetes insipidus | (d) Deficiency of thyroxin |