D:-21
Correct Answer:- Option-C

Question29:-The law starting that “the partial pressure of the gas in vapour phase is proportional to the mole fraction of the
65 17 the solution" is known as

A:-Raoults law

B:-Dalton's law of partial pressure
C:-Ostwald's dilution law
D:-Henry's law

Correct Answer:- Option-D

Question30:-The excess pressure that is applied to the solution to prevent the passage of solvent in to it through a semi
pemmeable membrane is referred to as

A:-Partial pressure

B:-Critical pressure

C:-Osmotic pressure

D:-None of these

Correct Answer:- Option-C

:-The hybridisation of carbon in Graphite is
"05072"

ந்தா?
Correct Answer:- Option-D
Question32:-Isotonic solutions have
A:-Same osmotic pressure
B:-same freezing point
C:-same melting point
D:-same boiling point
Correct Answer:- Option-A
Question33:-Best method to prevent corrosion of iron ‏کا‎

കണ്ടി n cathode
B:-maki n anode
ம்‌ saline water

D:-make it in contact with atmosphere
Correct Answer:- Option-A
Question34:-The half life of first order reaction with rate constant 'K is given by
கற
8:௩0
C:-*(0.693)/(2K)"
:-:(0.693)/(07
Correct Answer:- Option-D
Question35:-Unit of first order reaction is
കടടവ
8:௬௦ (151
ளும்‌
:-dimensionless
Correct Answer:- Option-A
Question36:-Which of the following constitute Daniel cell?
A:-Zn-Hg cell
B:-Zn-Cu cell
C:-Zn-Ag cell
D:-Cu-Hg cell
Correct Answer:- Option-B
Question37:-The correct formula for plaster of paris ‏کا‎
‎Cas0_4.2H_20"

. _(1)/(2)“"H_20"‘
D:'Ca_ZSO_ 'H_20"‘
CcrrectAnswer.Optlc'n-C

Question38:-Permanent hardness of water is due to the presence of