Select Chapter Topics:
Q. No.If 22 g of benzene is dissolved in 122 g of carbon tetrachloride then the mass percentage of benzene (C6H6) and carbon tetrachloride (CCl4) are respectively:
1. 86.32 %; 13.68 %
2. 13.68 %; 86.32 %
3. 84.72 %; 15.28 %
4. 15.28 %; 84.72 %
1. 86.32 %; 13.68 %
2. 13.68 %; 86.32 %
3. 84.72 %; 15.28 %
4. 15.28 %; 84.72 %
Subtopic: Concentration Terms & Henry's Law |
66%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
The mole fraction of benzene in solution containing 30% by mass in carbon tetrachloride is:
1. 0.528
2. 0.618
3. 0.458
4. 0.338
1. 0.528
2. 0.618
3. 0.458
4. 0.338
Subtopic: Concentration Terms & Henry's Law |
56%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
The molarity of 30 g Co(NO3)2. 6H2O in 4.3 L of solution is:
1. 0.053 M
2. 0.043 M
3. 0.023 M
4. 0.063 M
Subtopic: Concentration Terms & Henry's Law |
67%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
What mass of urea (NH₂CONH₂) is needed to prepare 2.5 kg of a 0.25 molal solution?
| 1. | 39 g | 2. | 37 g |
| 3. | 41 g | 4. | 35 g |
Subtopic: Concentration Terms & Henry's Law |
81%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
Calculate the molarity of the KI solution, provided its density is 1.202 g mL-1 and it consists of a 20% (mass/mass) concentration.
1. 1.25 M
2. 1.95 M
3. 1.45 M
4. 2.15 M
1. 1.25 M
2. 1.95 M
3. 1.45 M
4. 2.15 M
Subtopic: Concentration Terms & Henry's Law |
63%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
The solubility of H2S in water at STP is 0.195 m, The value of Henry’s law constant will be:
| 1. | 274 atm | 2. | 285 atm |
| 3. | 295 atm | 4. | 278 atm |
Subtopic: Concentration Terms & Henry's Law |
54%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
Henry’s law constant for CO2 in water is 1.67 × 108 Pa at 298 K. The quantity of CO2 in 500 mL of soda water when packed under 2.5 atm CO2 pressure at 298 K is:
| 1. | 1.24 g | 2. | 1.45 g |
| 3. | 1.65 g | 4. | 1.85 g |
Subtopic: Concentration Terms & Henry's Law |
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
The vapour pressure of pure liquids A and B are 450 and 700 mm Hg respectively, at 350 K. If the total vapour pressure is 600 mm Hg then the composition of the vapour phase are:
1. XA=0.30; XB=0.70
2. XA=0.40; XB=0.60
3. XA=0.20; XB=0.90
4. XA=0.50; XB=0.50
Subtopic: Raoult's Law |
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
Vapour pressure of pure water at 298 K is 23.8 mm Hg. 50 g of urea (NH2CONH2) is dissolved in 850 g of water.
The vapour pressure of water (in mm Hg) for this solution is :
The vapour pressure of water (in mm Hg) for this solution is :
| 1. | 23.40 | 2. | 0.23 |
| 3. | 12.87 | 4. | 40.14 |
Subtopic: Raoult's Law |
65%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
If the boiling point of water at 750 mm Hg is 99.63°C, what quantity of sucrose is needed to be dissolved in 500 g of water to achieve a boiling point of 100°C?
(Molal elevation constant for water is 0.52 K kg mol−1 )
1. 128.17 g
2. 121.67 g
3. 125.57 g
4. 116.27 g
(Molal elevation constant for water is 0.52 K kg mol−1 )
1. 128.17 g
2. 121.67 g
3. 125.57 g
4. 116.27 g
Subtopic: Elevation of Boiling Point |
65%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
Select Chapter Topics:
© 2024 GoodEd Technologies Pvt. Ltd.