Class 12 Chemistry Chapter 2 Solutions MCQs | Class 12 Chemistry Chapter 2 Solutions Multiple Choice Questions (MCQs) and Answers
Questions
1
Equal volumes of 0.1M AgNO3 and 0.2M NaCl are mixed. The concentration of NO3– ions in the mixture will be
Answer:0.05M
2
Which of the following should be done in order to prepare 0.4M NaCl starting with 100ml of 0.3M NaCl?
Answer:add 0.01 mol NaCl
3
The volume of 0.025M H3PO4 required to neutralise 25ml of 0.03M Ca(OH)2 is
Answer: 20ml
4
The mole fraction of the solute in one molal aqueous solution is
Answer: 0.018
5
5 cm3 of acetone is added to 100 cm3 of water, the vapour pressure of water over the solution will be
Answer: less than the vapour pressure of pure water
6
The density of a solution prepared by dissolving 129g of urea in 1000g of water is 1.15g/ml. The molarity of this solution is
Answer:2.05M
7
If at a certain temperature the vapour pressure of pure water is 25 mm Hg and that of a very dilute aqueous urea solution is 24.5 mm Hg, the molality of the solution is:
Answer:1.11
8
The relationship between osmotic pressure at 273K when 10g glucose (P1), 10g urea (P2) and 10g sucrose (P3) are dissolved in 250ml of water is
Answer:P2 > P1 > P3
9
Two liquids X and Y form an ideal solution. At 300K vapour pressure of the solution containing 1mol of X and 3 mol of Y is 550 mm Hg. At the same temperature, if 1 mol of Y is further added to this solution, the vapour pressure of the solution increases by 10 mm Hg. Vapour pressure of X and Y in the pure states will be respectively
500 and 600
200 and 300
Answer: (b)
Answer:400 and 600
10
Mixing up equal volumes of 0.1M NaOH and 0.1M CH3COOH yields a solution which is
Answer:basic
11
Which of the following possesses physical state of solute and solvent are liquid and solid respectively ?
Answer:zinc amalgam
12
Which of the following alternative is correct for physical state of solute and solvent for a solution of camphor in N2 gas ?
Answer: solid, gas
14
Which of the following pair of solution having same physical state of solute ?
Answer: moist air, solution of ethanol in water
15
Which of the following pair of solution having same physical state of solvent ?
Answer:homogenous mixture of camphor in N2 gas, moist air
16
Which of the following pair of solution having different physical state of solute ?
Answer: homogenous mixture of chloroform in N2 gas, solution of CO2 in water
17
Which of the following pair of solution having different physical state of solvent ?
Answer: sodium amalgam, solution of urea in water
18
Which of the following compound possesses maximum solubility in water ?
Answer:Pentane – 1, 2, 3, 4 – tetraol
19
Which of the following given compound is least soluble in water ?
Answer: Hexan – 1 – ol
20
To convert molarity into which of the following unit of concentration, does not require density of the solution ?
Answer: normality
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