Quiz 4 for Class 12 Chemistry Chapter 2 Solutions

Quiz 4 for Class 12 Chemistry Chapter 2 Solutions

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Quiz 4 : Solutions - Class 12 Chemistry

Negative Marking :- No

Weightage per Question :- 1 Mark

Number of Questions :- 15

Duration of Quiz :- 15 min

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1) What happens to freezing point to benzene when naphthalene is added ?

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2) How much volume of 1 M H2SO4 is required to neutralise 20 mL of 1 M NaOH ?

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3) Two bottles ‘A’ and ‘B’ contains 1 M and 1 m aqueous solution of H2SO4 respectively.

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4) How many gram of concentrated nitric acid solution should be used to prepare 250 mL of 2.0 M nitric acid. The concentrated acid is 70% HNO3.

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5) 4.0 gm of NaOH is dissolved in 100 mL solution. The normality of the solution is:

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6) An aqueous solution of glucose is 10 % in strength. The volume in which 1 mole of it is dissolved will be :

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7) The vapour pressure of pure solvent is 0.8 mmHg at a particular temperature. On addition of a non-volatile solute ‘A’ the vapour pressure of solution become 0.6 mmHg. The mole fraction of component ‘A’ is :

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8) The osmotic pressure of 12% solution of cane-sugar at 17 °C is:

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9) Choose the correct statement. When concentration of a salt solution increased:

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10) How many grams of sulphuric acid is to be dissolved to prepare 200 mL aqueous solution having concentration of H3O+ ions 1 Molar at 25 °C ?

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11) Which of the following statements about the ideal solution is incorrect ?

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12) If ‘α’ is the degree of dissociation of Na2SO4 then van’t Hoff factor (i) used for calculating the molecular mass is :

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13) A solution containing 62 gm of ethylene glycol (molar mass 62 gm/mol) in 250 gm water is cooled to −10 °C. If Kf for water is 1.86 K Kg mol−1, the amount of water separated as ice is :

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14) Relative lowering of vapour pressure of a dilute solution is 0.2. What is the mole fraction of the non-volatile solute ?

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15) Vapour pressure of pure ‘A’ is 70 mmHg at 298 K. It forms an ideal solution with ‘B’ in which mole fraction of ‘A’ is 0.8. If the vapour pressure of the solution is 84 mmHg at 298 K, the vapour pressure of pure ‘B’ at 298 K is :

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