NEET/JEE/ KEAM Entrance Examination - Chemistry - Chapter: Solutions

16 Questions | Total Attempts: 34

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NEET/JEE/ KEAM  Entrance Examination - Chemistry - Chapter: Solutions

Each correct answer have 4 Marks Each wrong answers have -1 Mark Time - 20 Minutes ( 15 Questions )


Questions and Answers
  • 1. 
    Which of the following is dependent on temperature?
    • A. 

      Molarity

    • B. 

      Mole fraction 

    • C. 

      Weight percentage 

    • D. 

      Molality

  • 2. 
    How many grams of concentrated nitric acid solution should be used to prepare 250 ml of 2.0M HNO3 ? The concentrated acid is 70% HNO3
    • A. 

      90.0 g conc. HNO3

    • B. 

      70.0 g conc. HNO3

    • C. 

      54.0 g conc. HNO3

    • D. 

      45.0 g conc. HNO3

  • 3. 
    1M, 2.5 litre NaOH solution is mixes with another 0.5 M, 3 litre NaOH solution. Then find out the molarity of resultant solution.
    • A. 

      0.80 M

    • B. 

      1.0 M

    • C. 

      0.73 M

    • D. 

      0.50 M

  • 4. 
    Molarity of liquid HCl will be, if density of solution is 1.17 gm/cc
    • A. 

      36.5

    • B. 

      32.05

    • C. 

      18.25

    • D. 

      42.10

  • 5. 
    Which of the following modes of expressing concentration is independent of temperature?
    • A. 

      Molarity

    • B. 

      Molality

    • C. 

      Formality

    • D. 

      Normality

  • 6. 
    An aqueous solution is 1.00 molal in KI. Which change will cause the vapour pressure of the solution to increase?
    • A. 

      Addition of NaCl

    • B. 

      Addition of Na2SO4

    • C. 

      Addition of 1.00 molal KI

    • D. 

      Addition of water 

  • 7. 
    A solution of acetone in in ethanol
    • A. 

      Shows a positive deviation from Raoult's law 

    • B. 

      Behaves like a non ideal solution 

    • C. 

      Obeys Raoult's law 

    • D. 

      Shows a negative deviation from Raoult's law

  • 8. 
    The vapour pressure of two liquids 'P' and 'Q' are 80 and 60 torr, respectively. The total vapour pressure of solution obtained by mixing 3 mole of P and 2 mole of Q would be,
    • A. 

      72 torr

    • B. 

      140 torr

    • C. 

      68 torr 

    • D. 

      20 torr

  • 9. 
    The vapour pressure of a solvent decreased by 10mm of mercury when a non-volatile solute was added to the solvent. The mole fraction of the solute in the solution is 0.2. What should be the mole fraction of the solvent if the decrease in the vapour pressure is to be 20mm of mercury?
    • A. 

      0.8

    • B. 

      0.6

    • C. 

      0.4

    • D. 

      0.2

  • 10. 
    According to Raoult's law, relative lowering of vapour pressure for a solution is equal to,
    • A. 

      Moles of solute 

    • B. 

      Moles of solvent 

    • C. 

      Mole fraction of solute 

    • D. 

      Mole fraction of solvent 

  • 11. 
    An ideal solution is formed when its components, 
    • A. 

      Have no volume change on mixing 

    • B. 

      Have no enthalpy change on mixing 

    • C. 

      Have both the above characteristics 

    • D. 

      Have high solubility

  • 12. 
    A 0.0020 m aqueous solution of an ionic compound Co(NH3)5(NO2) Cl freezes at -0.00732 0C. Number of moles of ions which 1 mol of ionic compound produces on being dissolved in water will be (Kf = -1.86 0C/m)
    • A. 

      3

    • B. 

      4

    • C. 

      1

    • D. 

      2

  • 13. 
    1.00 g of a non-electrolyte solute (molar mass 250 g mol-1 ) was dissolved in 51.2 g of benzene. If the freezing point depression constant, Kf of benzene is 5.12 K kg mol-1 , the freezing point of benzene will be lowered by, 
    • A. 

      0.3 K

    • B. 

      0.5 K

    • C. 

      0.4 K

    • D. 

      0.2

  • 14. 
    Which one is a colligative property?
    • A. 

      Boiling point

    • B. 

      Vapour pressure

    • C. 

      Osmotic pressure

    • D. 

      Freezing point

  • 15. 
    Blood cells retain their normal shape in solution which are, 
    • A. 

      Hypotonic to blood

    • B. 

      Isotonic to blood

    • C. 

      Hypertonic to blood

    • D. 

      Equinormal to blood

  • 16. 
    Which one do you like?
    • A. 

      Option 1

    • B. 

      Option 2

    • C. 

      Option 3

    • D. 

      Option 4

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