Solutions Chemistry Mock Test – 1 :15Q. Solutions Chemistry Mock Test, NEET Chemistry Chapter Wise Mock Test – Solutions, Online Test Class 12 Chemistry The Solutions, Solutions free mock tests for NEET, Online mock tests JEE Chemistry Solutions
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12th C02 Solutions Chemistry Mock Test - 2
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- Question 1 of 10
The number of moles of NaCl in 3 litres of 3M solution is
(c) 3M solution means 3 moles in 1 litre.
∴ 9 moles in 3 litre.
- Question 2 of 10
4L of 0.02 M aqueous solution of NaCl was diluted by adding one litre of water. The molality of the resultant solution is ________ .[NCERT Exemplar]
- Question 3 of 10
Low concentration of oxygen in the blood and tissues of people living at high altitude is due to _________ .[NCERT Exemplar]
(a) low temperature
(b) low atmospheric pressure
(c) high atmospheric pressure
(d) both low temperature and high atmospheric pressureCorrectIncorrect
Correct option is B
low atmospheric pressure
Low concentration of oxygen in blood and tissues of people living at high altitudes is due to low atmospheric pressure. Because at high altitude, the partial pressure of oxygen is less than at the ground level. This decreased atmospheric pressure causes the release of oxygen from the blood.
- Question 4 of 10
We have three aqueous solutions of NaCl labelled as ‘A’, ‘B’ and ‘C’ with concentrations 0.1M, 0.01M and 0.001M, respectively. The value of van’t Hoff factor for these solutions will be in the order __________ . [NCERT Exemplar]CorrectIncorrect
(c) van’t Hoff factor (i) does not depend upon concentration.
- Question 5 of 10
When 1 mole of benzene is mixed with 1 mole of toluene (vapour pressure of benzene – 12.8 kPa, Toluene = 3.85 kPa)
(a) The vapour will contain equal amount of benzene and toluene.
(b) Not enough information is given for prediction.
(c) The vapour will contain a higher percentage of benzene.
(d) The vapour will contain higher percentage of toluene.CorrectIncorrect
(c) It is because benzene has high vapour pressure, it will form more vapours as compared to toluene.
- Question 6 of 10
At 100°C, the vapour pressure of a solution of 6.5 g of solute in 100 g of water is 732 mm. If Kb is 0.52 K/m, the boiling point of solution will be [HOTS]
(c) 101 °C
- Question 7 of 10
Which of the following is incorrect for an ideal solution?CorrectIncorrect
(d) ∆G cannot be equal to zero because mixing does not lead to equilibrium.
- Question 8 of 10
Which of the following is correct. [NCERT Exemplar]
(a) KJJ increases with increase in temperature (KH is Henry’s law constant).
(b) Solubility of gas in liquid decreases with increases in temperature.
(c) KJJ decreases with increase in temperature.
(d) Solubility of gas in liquid increases with increase in temperature.CorrectIncorrect
- Question 9 of 10
Benzoic acid, when dissolved in benzene, which of the following is correct. [NCERT Exemplar]
(a) The benzoic acid will undergo dissociation.
(b) The benzoic acid will undergo association.
(c) Observed molar mass of benzoic acid in benzene will less than normal molar mass.
(d) Observed molar mass of benzoic acid in benzene is more than normal molar mass.CorrectIncorrect
- Question 10 of 10
Relative lowering of vapour pressure is a colligative property because ________ . [NCERT Exemplar]
(а) It depends on the concentration of a non electrolyte solute in solution and does not depend on the nature of the solute molecules.
(b) It depends on number of particles of electrolyte solute in solution and does not depend on the nature of the solute particles.
(c) It depends on the concentration of a non electrolyte solute in solution as well as on the nature of the solute molecules.
(d) It depends on the concentration of an electrolyte or nonelectrolyte solute in solution as well as on the nature of solute molecules.CorrectIncorrect
(a) and (b) colligative property depends upon number of particles of solute in both electrolyte and non-electrolyte.