Chemistry Test 89

Result

Chemistry Test 89

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Weekly Quiz Competition

Question 1
4 / -1

Which of the following statement is true ?

A
Molarity is the number of moles of solute dissolved per litre of solvent

B
The molarity and normality of a solution of sodium carbonate are the same

C
Molality (m) of a solution is defined as the number of moles of solute dissolved is 1000g of solution

D
The ratio of mole fraction of solute and solvent is in the ratio of their respective moles
Question 2
4 / -1

The molarity of H₂SO₄ solution that has a density 1.84 g/cc at 35°C and contains 98% by weight :-

A
4.18 M

B
8.14 M

C
18.4 M

D
18 M

Solution
Question 3
4 / -1

Molarity and molality of a solution of a liquid (mol. wt. = 50) in aqueous solution is 9 and 10 respectively. What is the density of solution ?

A
1 g/cc

B
0.95 g/cc

C
1.05 g/cc

D
1.35 g/cc

Solution
Question 4
4 / -1

The molality of a sulphuric acid solution is 0.2 mol/kg. The total weight of the solution containing 1 mole of H₂SO₄ will be :-

A
1000g

B
1098 g

C
5098 g

D
1019.6 g
Question 5
4 / -1

Which of the following solution is acidic in nature ?

A

B

C

D
Question 6
4 / -1

3.4 g H₂O₂ is dissolved in 448 mL solution. The solution will be labelled as (V = Volume strength) :-

A
0.224 V

B
5 V

C
2.5 V

D
20 V
Question 7
4 / -1

A liquid is kept in a closed vessel. If a glass plate (negligible mass) with a small hole is kept on top of the liquid surface, then the vapour pressure of the liquid in the vessel is :-

A
More than what would be if the glass plate were removed

B
Same as what would be if the glass plate were removed

C
Less than what would be if the glass plate were removed

D
Cannot be predicted
Question 8
4 / -1

Which of the following have unequal vapour pressure ?

A
0.05 M K₃[Fe(CN)₆] and 0.10 M FeSO₄

B
0.10 M K₄[Fe(CN)₆] and
0.10 M FeSO₄.(NH₄)₂SO₄.6H₂O

C
0.30 M NaCl and 0.20 M BaCl₂

D
0.05M K₂SO₄.Al₂(SO₄)₃.24H₂O and
0.02M KCl. MgCl₂.6H₂O
Question 9
4 / -1

A solution contains 3 moles of water, 2 moles of ethyl alcohol and 1 mole of methyl alcohol. What is the mole fraction of water :-

A
0.33

B
0.16

C
0.50

D
1.0
Question 10
4 / -1

A, B, C, D are four liquids having B.P, 40°C, 90°C, 100°C, 150°C respectively. Which will have highest vapour pressure at same temperature ?

A
D

B
C

C
B

D
A