Solutions Test

Result

Solutions Test - 21

Score
-
out of -
Rank
-
out of -

TIME Taken - -

SHARING IS CARING

If our Website helped you a little, then kindly spread our voice using Social Networks. Spread our word to your readers, friends, teachers, students & all those close ones who deserve to know what you know now.

Weekly Quiz Competition

Question 1
4 / -1

A solution of sucrose (molar mass = 342 g/mol) is prepared by dissolving 68.4 g of it per litre of solution, what is its osmotic pressure
(R = 0.082 L atm K^-1 mol^-1) at 273 K ?

A
3.92 atm

B
4.48 atm

C
5.92 atm

D
29.4 atm

Solution
Question 2
4 / -1

In a 0.2 molal aqueous solution of a weak acid HX, the degree of ionisation is 0.3. Taking K_f for water as 1.85, the freezing point of the solution will be nearest to

A
- 0.481°C

B
- 0.360° C

C
-0.260° C

D
+ 0.480° C
Question 3
4 / -1

At temperature 327°C and concentration C osmotic pressure of a solution is p, the same solutions at concentration C /2 and a temperature 427°C shows osmotic pressure 2 atm, value of p will be

A

B

C

D

Solution
Question 4
4 / -1

18 g of glucose ( C₆H₁₂O₆ ) is added to 178.2 g of water. The vapour pressure of water for this aqueous solution at 100°C is

A
759.00 Torr

B
7.60 Torr

C
76.00 Torr

D
752.40 Torr
Question 5
4 / -1

The vapour pressure will be lowest for

A
0.1 M sugar solution

B
0.1 M KCl solution

C
0.1 M Cu(NO₃)₂ solution

D
0.1 M AgNO₃ solution
Question 6
4 / -1

Osmotic pressure of 0.4% urea solution is 1.64 atm and that of 3.42% cane sugar is 2.46 atm. When the above two solutions are mixed, the osmotic pressure of the resulting solution is

A
0.82 atm

B
2.46 atm

C
1.64 atm

D
4.10 atm
Question 7
4 / -1

Depression in freezing point is 6 K for NaCl solution if K_f for water is 1.86 K/Kg/mol, amount of NaCl dissolved in 1 Kg water is

A
3.42

B
1.62

C
3.24

D
1.71
Question 8
4 / -1

If a solution containing 0.072 g atom of sulphur in 100 g of a solvent ( K_f = 7.0 ) gave a freezing point depression of 0.84°C , the molecular formula of sulphur in the solution is

A
S₆

B
S₇

C
S₈

D
S₉
Question 9
4 / -1

Equimolar solution in the same solvent have

A
different boiling and different freezing points

B
same boiling and same freezing points

C
same freezing point but different boiling point

D
same boiling point but different freezing point
Question 10
4 / -1

The molar freezing point constant for water is 1.86°C/mol. If 342 g of cane sugar ( C₁₂ H₂₂ O₁₁) is dissolved in 1000 g of water , the solution will freeze at

A
-1.86°C

B
1.86°C

C
-3.92°C

D
2.42°C