Question

CLASS 12TH CHEMISTRY
Question-1 Choose the correct option - (each has 1 score)
(i) Wax is example of
12
(a) ionic solid (b) covalent solid (c) molecular solid (d) amorphous solid
(ii) The number of atoms in an infinitely dense cubic cell is:
(a)1
(b) 2
(c)3
(d) 4
iii) How many types of dimensional lattice are possible in the case of a solid substan
(a)23
(b) 7
(c) 8 (d) 14
(iv) Regulation of solubility of gases was given -
(a) Vant Hoff
(b) Berkeley (c) Henry (d) Boyle
(v) Pure water solubility
(a) 55.5
(b) 50.5
(c) 18
(d) 60.5
Question - 2 Fill in the blank space - (1 score each)
(i) An ideal solution is that which follows..............
(ii) Point defect found in ...............crystal.
(iii) The material on the surface of which the adsorption takes place is called........
(iv) The value of hydrogen in standard electrode potential is
(v) Catalyst used in Haber's Process is
Question - 3 answers in one word / one sentence. (1 score each)
(i)
Formula for density of unit cell
Differentiation between Frankel defect and Schottkydefect.
Formulas used for division of moles.
Define micelle formation?
What is quantum efficiency?
(iv)
(v)
Question - 4 match the columns - (each has 1 point)
(i) covalent solid
(ii) Antacids
(iii) Peptization
(iv) Amorphous solids
(v) Arrhenius equation
(a) Electrolyte
(b) Diamond
(c) Acidity treatment
(d) K = Ae^(-Ea / RT)
(e) Plastic​

Answer 1

Answer:

molecular crystal

Explanation:

for 1st question answer is molecular crystal