Solutions Test

Result

Solutions Test - 45

Score
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Weekly Quiz Competition

Question 1
4 / -1

What will be the concentration of solution prepared by dissolving 50 gm glucose in 200 gm water ?

A
25 % w/w

B
20 % w/w

C
35 % w/w

D
15 % w/w
Question 2
4 / -1

What quantity of urea required to prepare 20 % w/w solution having weight 150 gm ?

A
20 gm

B
40 gm

C
10 gm

D
30 gm
Question 3
4 / -1

What will be the mole-fraction of ethanol in solution, prepared by dissolving 9.2 gm ethanol in 900 gm water ? (Molecular weight of water and ethanol are 18 and 48 gm/mole respectively)

A
0.04

B
0.004

C
0.4

D
0.0004
Question 4
4 / -1

What will be the mole-fraction of water and NaOH respectively, when 260 gm NaOH dissolved in 1.8 kg water ? (M.W of water NaOH = 18440)

A
0.96, 0.4

B
0.0962, 0.38

C
0.0962, .038

D
0.962, 0.0038
Question 5
4 / -1

What would be the mole-fraction of solute in an aqueous solution of a substances heaving strength 4.5 m ?

A
0.75

B
0.075

C
0.45

D
0.045

Solution
Question 6
4 / -1

The density of 98% w/w H₂SO₄ solution is 1.8 gm/mole then, molarity of the solution is -

A
20 M

B
10 M

C
18 M

D
None of these

Solution
Question 7
4 / -1

Molarity and molality of an aqueous solution of H₂SO₄ are 1.56 (M) and 1.8 (M) respectively; then, water will be the density of the solution ?

A
1.835 gm/ml

B
1.55 gm/ml

C
1.02 gm/ml

D
1.725 gm/ml

Solution
Question 8
4 / -1

A solution is prepared from A, B, C and D mole-fraction of A, B and C are 0.1, 0.2 and 0.4 respectively then, mole-fraction of D is -

A
0.2

B
0.1

C
0.3

D
0.4

Solution
Question 9
4 / -1

The density of 4 M H₂SO₄ solution is 1.992 gm/ml then, what will be the molality of the solution ? (Molecular weight of H₂SO₄ is 98 gm/mole)

A
3M

B
3.5M

C
1.2M

D
0.4M
Question 10
4 / -1

Molarity of 1.2 N aqueous solution of AlCl₃ is -

A
3.6m

B
2.4m

C
1.2m

D
0.4m