| 1 |
What amount of NaOH is required to prepare 500 g of 0.5 molal solution. |
- A. 10 g
- B. 20 g
- C. 30 g
- D. 40 g
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| 2 |
In azeotropic mixture showing positive deviation from Raoult's law, the volume of the mixture is. |
- A. slightly more than the total volume of the components
- B. Slightly less than the total volume of the component
- C. Equal to the total volume of the components
- D. None of these
|
| 3 |
Which of the following solution s has the highest boiling point. |
- A. 5.85% solution of sodium chloride
- B. 18.0 % solution of glucose
- C. 6.0% solution of urea
- D. All have the same boiling point
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| 4 |
Which pair of mixture is called ideal solution. |
- A. Chlorobenzene and bromobenzene
- B. Water alcohol
- C. Water ether
- D. HCl and water
|
| 5 |
A solution of sucrose is 34.2% The volume of solution containing one mole of solute. |
- A. 500 cm3
- B. 1000 cm3
- C. 342 cm3
- D. 3420 cm3
|
| 6 |
18 g glucose is dissolved in 90 g o water, The relative lowering of vapour pressure is equal to. |
- A. 1/5
- B. 5.1
- C. 1/51
- D. 6
|
| 7 |
Unit of mole fraction is |
- A. mol dm-3
- B. mol kg-1
- C. g dm-3
- D. No unit
|
| 8 |
Azeotropic mixture |
- A. Obey Raoult's law
- B. Do not obey Raoult's law
- C. Boils at low temperature only
- D. Boils at high temperature only
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| 9 |
In a solution 7.8 g of benzene and 46 g of toluene is present The mole fraction of benzene is. |
- A. 1/2
- B. 1/3
- C. 1/5
- D. 1/6
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| 10 |
Upper consulate temperature for water phenol system is. |
- A. 150 <sup>o</sup>C
- B. 65.9 <sup>o</sup>C
- C. 120 <sup>o</sup>C
- D. 130 <sup>o</sup>C
|