Solutions Test

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Solutions Test - 12

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Weekly Quiz Competition

Question 1
1 / -0

An aqueous solution of methanol and water has vapour pressure

A
More than that of water

B
Less than that of water

C
Equal to that of water

D
Equal to that of methanol

Solution

They show positive deviation.
Question 2
1 / -0

Which has highest freezing point at 1 atm?

A
0.1 molal FeCl₃ solution

B
0.1 molal NaCl solution

C
0.1 molal BaCl₂ solution

D
0.1 molal sugar solution

Solution

Sugar solution has i=1 so ΔTf minimum so Tf will be maximum.
Question 3
1 / -0

Which of the following has highest boiling point?

A
0.1 molal NaCl solution

B
0.1 molal sugar solution

C
0.1 molal BaCl₂ solution

D
0.1 molal urea solution

Solution

i=3 so ΔT_b will be maximum and hence Tb will be maximum.
Question 4
1 / -0

A solution showing a large positive deviation from ideal behaviour has

A
ΔH_mix is negative

B
Higher boiling point than both the components

C
Lower boiling point than both the components

D
None of these

Solution

A solution showing a large positive deviation from ideal behaviour shows lower boiling point than both the components.
Question 5
1 / -0

Solution of hydrogen in palladium is an example of

A
Gas in solid

B
Solid in solid

C
Gas in gas

D
Liquid in gas

Solution

Hydrogen (solute, gas) and solvent is palladium (solid).
Question 6
1 / -0

In which unit, the concentration of solution remains independent of temperature

A
molality

B
formality

C
molarity

D
normaility

Solution

It is independent of volume hence independent of Temperature.
Question 7
1 / -0

The depression in freezing point for 1M urea, 1 M glucose and 1 M NaCl are in the ratio of

A
3:2:2

B
1:1:2

C
1:1:1

D
1:2:3

Solution

NaCl has i=2 while urea and glucose will have i=1
Question 8
1 / -0

35 mL of 0.1 M solution is used to neutralize 25 mL of barium hydroxide. The molarity of Barium hydroxide solution is

A
0.07

B
0.28

C
0.35

D
0.14

Solution

M₁v₁ = M₂v₂
N=M×nfN=M×nf
35×0.1=2×M2×2535×0.1=2×M2×25
M₂= 0.07

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Re-Attempt Weekly Quiz Competition

Solutions Test - 12

Result

Solutions Test - 12

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SHARING IS CARING

Question 1

More than that of water

Less than that of water

Equal to that of water

Equal to that of methanol

Solution

Question 2

0.1 molal FeCl3 solution

0.1 molal NaCl solution

0.1 molal BaCl2 solution

0.1 molal sugar solution

Solution

Question 3

0.1 molal NaCl solution

0.1 molal sugar solution

0.1 molal BaCl2 solution

0.1 molal urea solution

Solution

Question 4

ΔHmix is negative

Higher boiling point than both the components

Lower boiling point than both the components

None of these

Solution

Question 5

Gas in solid

Solid in solid

Gas in gas

Liquid in gas

Solution

Question 6

molality

formality

molarity

normaility

Solution

Question 7

3:2:2

1:1:2

1:1:1

1:2:3

Solution

Question 8

0.07

0.28

0.35

0.14

Solution

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0.1 molal FeCl₃ solution

0.1 molal BaCl₂ solution

0.1 molal BaCl₂ solution

ΔH_mix is negative