Question

SUBJECT : CHEMISTRY
TIME: 2 Hrs
MULTIPLE CHOICE QUESTIONS (2 marks X 20 = 40 marks)
1. Co-Ordination number of Ci-ion in NaCl structure is
a) 2
b) 6
c) 3
d) 4
2. Unit of rate constant for first order reaction constant K is
a) S-1
b) mol-LS-
c) mol-?L?S-1
d) moll-'S
3. Calamine is an ore of
a) Zn
b) Al
c) Cu
d) Fe
4. Which concentration unit is independent of temperature?
a) Molarity
b) Molality c) Normalityd) Mass volume ratio
5. Emulsions is a colloidal solution of
a) Two solids
b) Two liquids
c) Two gases
d) One solid and​

Answer 1

Answer:

1)c,3 2)b,mol-LS- 3)a,zn-zinc 4)b, Molality. 5)b,Two liquids