IIT JEE : Solid State QUESTIONS AND ANSWERS :: part1 : 26 to 30
Following IIT JEE Entrance Multiple choice objective type questions and answers will help you in Maths, Physics and Chemistry 2024 examinations :
26.How many four fold axes and three fold axes are there in a cube respectively? |
| 1, 1 |
| 2, 3 |
| 3, 3 |
| 4, 3. |
27.A pure crystalline substance on being heated gradually first forms a turbid liquid at constant temperature and still at a higher temperature, the turbidity completely disappears. The behaviour is a characteristic of substance forming |
| allotropic crystal |
| liquid crystal |
| isomeric crystal |
| isomorphous crystal. |
28.Pure silicon doped with phosphorus is |
| amorphous |
| p-type conductor |
| n-type conductor |
| insulator. |
29.Which of the following unit cells has the highest symmetry? |
| Hexagonal |
| Orthorhombic |
| Cubic |
| Monoclinic. |
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