Which one is the right option:

Previous Year Papers

Download Solved Question Papers Free for Offline Practice and view Solutions Online.

Test Series

Take Zigya Full and Sectional Test Series. Time it out for real assessment and get your results instantly.

Test Yourself

Practice and master your preparation for a specific topic or chapter. Check you scores at the end of the test.

The Solid State

Multiple Choice Questions

201. The presence of F-centres in a solid makes it

conducting
colourless
coloured
non-conducting

292 Views

202. Most crystals show good cleavage because their atoms, ions and molecules are

Weakly bonded together
strongly bonded together
spherically symmetrical
arranged in planes.

1643 Views

203. The available space occupied by spheres of equal size in three dimensions in both hcp and ccp arrangements is:

74%
70%
60.4%
52.4%

437 Views

204. The tetrahedral voids formed by ccp arrangement of CI^– ions in rock salt structure are:

Occupied by Na⁺ ions
Occupied by CI^– ions
Occupied by either Na⁺ or CI^– ions
Vacant

638 Views

205. CsCl has which type of lattice?

213 Views

206. If the distance between Na⁺ and CI^– ions in NaCl crystal is a pm, what is the length of the cell edge?
2a pm
a / 2 pm
4a pm
a/4 pm

2a pm

358 Views

207. A compound is formed by elements A and B. This crystallises in the cubic structure when atoms A are at the corners of the cube and atoms B are at the centre of the body. The simplest formula of the compound is:

AB
AB₂
A₂B
AB₄

238 Views

Short Answer Type

208. Name the crystal defect which lowers the density of an ionic crystal

316 Views

209. What makes the crystal of KCl appear sometimes violet?

730 Views

210. What is the effect of Schottky and Frenkel defects on the density of crystalline solids?

897 Views