Shalaa

what is osmosis

Semipermeable membrane

Vapour pressure lowering

what is the colligative properties and this types

viii. Pb has fee structure with edge length of unit cell 495 pm. Radius of Pb atom is

vii. A compound forms hep structure. Number of octahedral and tetrhedral voids in 0.5 mole of substance is respectively.

vi. Which of the following is not correct?

V. The coordination number of atoms in bec crystal lattice isa. 2 b. 4 c. 6 d. 8

iv. In crystal lattice formed by bcc unit cell the void volume isa. 68%b. 32%c. 74%d. 26%

iii. In Frenkel defect?

ii. Which of the follwong is n-type semiconductor?a. Pure Sib. Si doped with Asc. Si doped with Gad. Ge doped with In

i. Molecular solids are a.crystalline solidsb. amorphous solidsc. ionic solidsd. metallic solids