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31 Years NEET Previous Year Questions: Solutions - 2 - Question 1

An ideal solution is formed when its components [1988]

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31 Years NEET Previous Year Questions: Solutions - 2 - Question 2

All form ideal solution except [1988]

Detailed Solution for 31 Years NEET Previous Year Questions: Solutions - 2 - Question 2

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31 Years NEET Previous Year Questions: Solutions - 2 - Question 3

The relative lowering of the vapour pressure is equal to the ratio between the number of [1991]

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31 Years NEET Previous Year Questions: Solutions - 2 - Question 4

Which of the following aqueous solution has minimum freezing point ? [1991]

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31 Years NEET Previous Year Questions: Solutions - 2 - Question 5

Blood cells retain their normal shape in solution which are [1991]

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31 Years NEET Previous Year Questions: Solutions - 2 - Question 6

Which of the following modes of expressing concentration is independent of temperature ? [1992,1995]

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31 Years NEET Previous Year Questions: Solutions - 2 - Question 7

Which one is a colligative property ? [1992]

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31 Years NEET Previous Year Questions: Solutions - 2 - Question 8

If 0.1 M solution of glucose and 0.1 M solution of urea are placed on two sides of the semipermeable membrane to equal heights, then it will be correct to say that [1992]

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31 Years NEET Previous Year Questions: Solutions - 2 - Question 9

At 25°C, the highest osmotic pressure is exhibited by 0.1 M solution of [1994]

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31 Years NEET Previous Year Questions: Solutions - 2 - Question 10

Which one of the following salts will have the same value of van’t Hoff factor (i) as that of K_{4}[Fe (CN)_{6}]. [1994]

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31 Years NEET Previous Year Questions: Solutions - 2 - Question 11

The number of moles of oxygen in one litre of air containing 21% oxygen by volume, in standard conditions, is [1995]

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31 Years NEET Previous Year Questions: Solutions - 2 - Question 12

Vapour pressure of benzene at 30°C is 121.8 mm.When 15 g of a non volatile solute is dissolved in 250 g of benzene its vapour pressure decreased to 120.2 mm. The molecular weight of the solute (Mo. wt. of solvent = 78) [1995]

Detailed Solution for 31 Years NEET Previous Year Questions: Solutions - 2 - Question 12

31 Years NEET Previous Year Questions: Solutions - 2 - Question 13

According to Raoult's law, relative lowering of vapour pressure for a solution is equal to [1995

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31 Years NEET Previous Year Questions: Solutions - 2 - Question 14

The vapour pressure at a given temperature of an ideal solution containing 0.2 mol of a nonvolatile solute and 0.8 mol of solvent is 60 mm of Hg. The vapour pressure of the pure solvent at the same temperature is [1996]

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31 Years NEET Previous Year Questions: Solutions - 2 - Question 15

Which of the following 0.10 m aqueous solutions will have the lowest freezing point ? [1997]

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31 Years NEET Previous Year Questions: Solutions - 2 - Question 16

A 5% solution of cane sugar (mol. wt. =342) is isotonic with 1% solution of a substance X. The molecular weight of X is [1998]

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31 Years NEET Previous Year Questions: Solutions - 2 - Question 17

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?

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31 Years NEET Previous Year Questions: Solutions - 2 - Question 18

Which of the following statements, regarding the mole fraction (x) of a component in solution, is incorrect? [1999]

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31 Years NEET Previous Year Questions: Solutions - 2 - Question 19

Which of the following colligative property can provide molar mass of proteins (or polymers or colloids) with greatest precision ? [2000]

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31 Years NEET Previous Year Questions: Solutions - 2 - Question 20

The beans are cooked earlier in pressure cooker, because [2001]

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31 Years NEET Previous Year Questions: Solutions - 2 - Question 21

Molarity of liquid HCl will be, if density of solution is 1.17 gm/cc [2001]

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31 Years NEET Previous Year Questions: Solutions - 2 - Question 22

1 M, 2.5 litre NaOH solution is mixed with another 0.5 M, 3 litre NaOH solution. Then find out the molarity of resultant solution [2002]

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31 Years NEET Previous Year Questions: Solutions - 2 - Question 23

A solution con tains non -volatile solute of molecular mass M_{2}. Which of the following can be used to calculate the molecular mass of solute in terms of osmotic pressure ? [2002]

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31 Years NEET Previous Year Questions: Solutions - 2 - Question 24

A solution containing components A and B follows Raoult's law when [2002]

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31 Years NEET Previous Year Questions: Solutions - 2 - Question 25

Formation of a solution from two components can be considered as [2003]

(i) Pure solvent → separated solvent molecules, ΔH_{1}

(ii) Pure solute → separated solute molecules, ΔH_{2}

(iii) Separted solvent & solute molecules → Solution, ΔH_{3}

Solution so formed will be ideal if

(a) ΔHsoln = ΔH1 + ΔH2 - ΔH3

(b) ΔHsoln = ΔH1 + ΔH2 + ΔH3

(c) ΔHsoln = ΔH1 - ΔH2 - ΔH3

(d) ΔHsoln = ΔH3 - ΔH1 - ΔH2

Detailed Solution for 31 Years NEET Previous Year Questions: Solutions - 2 - Question 25

31 Years NEET Previous Year Questions: Solutions - 2 - Question 26

Camphoris often used in molecular mass determination because [2004]

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31 Years NEET Previous Year Questions: Solutions - 2 - Question 27

The vapour pressure of two liquids ‘P’ an d ‘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 [2005]

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31 Years NEET Previous Year Questions: Solutions - 2 - Question 28

A solution of urea (m ol. mass 56 g mol^{-1}) boils at 100.18°C at the atmospheric pressure. If K_{f }and K_{b }for water are 1.86 and 0.512 K kg mol^{-1} respectively, the above solution will freeze at [2005]

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31 Years NEET Previous Year Questions: Solutions - 2 - Question 29

The mole fraction of the solute in one molal aqueous solution is: [2 00 5]

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31 Years NEET Previous Year Questions: Solutions - 2 - Question 30

A solution of acetone in ethanol [2006]

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