# Solution Test 5

Total Questions:50 Total Time: 75 Min

Remaining:

## Questions 1 of 50

Question:$$9.8g$$ of $${H_2}S{O_4}$$ is present in 2 litres of a solution. The molarity of the solution is

$$0.1M$$

$$0.05M$$

$$0.2M$$

$$0.01M$$

## Questions 2 of 50

Question:What will be the molarity of a solution containing $$5g$$ of sodium hydroxide in $$250\,ml$$ solution

0.5

1

2

0.1

## Questions 3 of 50

Question:171 g of cane sugar $$({C_{12}}{H_{22}}{O_{11}})$$ is dissolved in 1 litre of water. The molarity of the solution is

2.0 M

1.0 M

0.5 M

0.25 M

## Questions 4 of 50

Question:The volumes of $$4\,N\,HCl$$ and $$10\,N\,HCl$$ required to make 1 litre of $$6\,N\,HCl$$ are

0.75 litre of 10 N HCl and 0.25 litre of 4 N HCl

0.25 litre of 4 N HCl and 0.75 litre of 10 N HCl

0.67 litre of 4 N HCl and 0.33 litre of 10 N HCl

0.80 litre of 4 N HCl and 0.20 litre of 10 N HCl

0.50 litre of 4 N HCl and 0.50 litre of 10 N HCl

## Questions 5 of 50

Question:The number of molecules in $$16gm$$ of methane is

$$3.0 \times {10^{23}}$$

$$6.02 \times {10^{23}}$$

$$\frac{{16}}{{6.02}} \times {10^{23}}$$

$$\frac{{16}}{{3.0}} \times {10^{23}}$$

## Questions 6 of 50

Question:The number of moles of a solute in its solution is 20 and total number of moles are 80. The mole fraction of solute is

2.5

0.25

1

0.75

## Questions 7 of 50

Question:10.6 grams of a substance of molecular weight 106 was dissolved in $$100ml$$. $$10ml$$ of this solution was pipetted out into a $$1000ml$$ flask and made up to the mark with distilled water. The molarity of the resulting solution is

$$1.0M$$

$${10^{ - 2}}M$$

$${10^{ - 3}}M$$

$${10^{ - 4}}M$$

## Questions 8 of 50

Question:The mole fraction of water in 20% aqueous solution of $${H_2}{O_2}$$ is

$$\frac{{77}}{{68}}$$

$$\frac{{68}}{{77}}$$

$$\frac{{20}}{{80}}$$

$$\frac{{80}}{{20}}$$

## Questions 9 of 50

Question:On passing $${H_2}S$$ gas through a solution of $$C{u^ + }$$ and $$Z{n^{ + 2}}$$ ions, CuS is precipitated first because

Solubility product of CuS is equal to the ionic product of ZnS

Solubility product of CuS is equal to the solubility product of ZnS

Solubility product of CuS is lower than the solubility product of ZnS

Solubility product of CuS is greater than the solubility product of ZnS

## Questions 10 of 50

Question:The number of moles of solute per kg of a solvent is called its

Molarity

Normality

Molar fraction

Molality

## Questions 11 of 50

Question:3.65 gms of HCl is dissolved in 16.2 gms of water. The mole fraction of HCl in the resulting solution is

0.4

0.3

0.2

0.1

## Questions 12 of 50

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

18 litre

9 litre

0.9 litre

1.8 litre

## Questions 13 of 50

Question:Molarity of 4% $$NaOH$$ solution is

$$0.1M$$

$$0.5M$$

$$0.01M$$

$$1.0M$$

## Questions 14 of 50

Question:When $$6gm$$ urea dissolve in $$180\,gm\,{H_2}O$$ . The mole fraction of urea is

$$\frac{{10}}{{10.1}}$$

$$\frac{{10.1}}{{10}}$$

$$\frac{{10.1}}{{0.1}}$$

$$\frac{{0.1}}{{10.1}}$$

## Questions 15 of 50

Question:What is the molarity of $${H_2}S{O_4}$$ solution, that has a density 1.84 gm/cc at $${35^o}C$$ and contains solute 98% by weight

4.18 M

8.14 M

18.4 M

18 M

## Questions 16 of 50

Question:A certain aqueous solution of $$FeC{l_3}$$ (formula mass =162) has a density of $$1.1\,g/ml$$ and contains $$20.0\% \,FeC{l_3}$$ . Molar concentration of this solution is

0.028

0.163

1.27

1.47

## Questions 17 of 50

Question:If we take $$44g$$ of $$C{O_2}$$ and $$14g$$ of $${N_2}$$ what will be mole fraction of $$C{O_2}$$ in the mixture

1/5

1/3

2/3

1/4

## Questions 18 of 50

Question:What is the volume of $$0.1\,N\,HCl$$ required to react completely with $$1.0g$$ of pure calcium carbonate $$(Ca = 40,\,C = 12$$ and $$O = 16)$$

$$150\,c{m^3}$$

$$250\,c{m^3}$$

$$200\,c{m^3}$$

$$100\,c{m^3}$$

## Questions 19 of 50

Question:Which of the following is not a colligative property

Optical activity

Elevation in boiling point

Osmotic pressure

Lowering of vapour pressure

## Questions 20 of 50

Question:Colligative properties of a solution depends upon

Nature of both solvent and solute

The relative number of solute and solvent particles

Nature of solute only

Nature of solvent only

## Questions 21 of 50

Question:Which solution will show the maximum vapour pressure at 300 K

1 M $$C{_{12}}{H_{22}}{O_{11}}$$

1 M $$C{H_3}COOH$$

1 M $$NaC{l_2}$$

1 M $$NaCl$$

## Questions 22 of 50

Question:The relative lowering of the vapour pressure is equal to the ratio between the number of

Solute moleules and solvent molecules

Solute molecules and the total molecules in the solution

Solvent molecules and the total molecules in the solution

none of these

## Questions 23 of 50

Question:An aqueous solution of glucose was prepared by dissolving 18 g of glucose in 90 g of water. The relative lowering in vapour pressure is

0.02

1

20

180

## Questions 24 of 50

Question:Relative lowering in vapour pressure of solution containing non-volatile solute is directly proportional to mole fraction of solute. Above statement is

Henry law

Dulong and Petit law

Raoult's law

Le-Chatelier's principle

## Questions 25 of 50

Question:If two substances $$A$$ and $$B$$ have $$P_A^0:\,P_B^0 = 1\,:\,2$$ and have mole fraction in solution 1 : 2 then mole fraction of $$A$$ in vapours

0.33

0.25

0.52

0.2

## Questions 26 of 50

Question:A dry air is passed through the solution, containing the 10 gm of solute and 90 gm of water and then it pass through pure water. There is the depression in weight of solution wt by 2.5 gm and in weight of pure solvent by 0.05 gm. Calculate the molecular weight of solute

50

180

100

25

51

## Questions 27 of 50

Question:All form ideal solution except

$${C_2}{H_5}Br$$ and $${C_2}{H_5}I$$

$${C_2}{H_5}Cl$$ and $${C_6}{H_5}Br$$

$${C_6}{H_6}$$ and $${C_6}{H_5}C{H_3}$$

$${C_2}{H_5}I$$ and $${C_2}{H_5}OH$$

## Questions 28 of 50

Question:Formation of a solution from two components can be considered as (i) Pure solvent $$\to$$ separated solvent molecules $$\Delta {H_{\rm{1}}}$$ (ii) Pure solute $$\to$$ separated solute molecules $$\Delta {H_{\rm{2}}}$$ (iii)Separated solvent and solute molecules $$\to$$ solution $$\Delta {H_3}$$ Solution so formed will be ideal if

$$\Delta {H_{{\rm{soln}}}} = \Delta {H_3} - \Delta {H_1} - \Delta {H_2}$$

$$\Delta {H_{{\rm{soln}}}} = \Delta {H_1} + \Delta {H_2} + \Delta {H_3}$$

$$\Delta {H_{{\rm{soln}}}} = \Delta {H_1} + \Delta {H_2} - \Delta {H_3}$$

$$\Delta {H_{{\rm{soln}}}} = \Delta {H_1} - \Delta {H_2} - \Delta {H_3}$$

## Questions 29 of 50

Question:The azeotropic mixture of water $$(b.p{.100^o}C)$$ and $$HCl\,(b.p.\,{85^o}C)$$ boils at $${108.5^o}C$$. When this mixture is distilled it is possible to obtain

Pure $$HCl$$

Pure water

Pure water as well as pure $$HCl$$

Neither $$HCl$$ nor $${H_2}O$$ in their pure states

## Questions 30 of 50

Question:An azeotropic solution of two liquids has boiling point lower than either when it

Shows a negative deviation from Raoult's law

Shows no deviation from Raoult's law

Shows positive deviation from Raoult's law

Is saturated

## Questions 31 of 50

Question:Which of the following colligative properties can provide molar mass of proteins (or polymers or colloids) with greater precision

Relative lowering of vapour pressure

Elevation of boiling point

Depression in freezing point

Osmotic pressure

Rast's method

## Questions 32 of 50

Question:The average osmotic pressure of human blood is 7.8 bar at $${37^o}C$$. What is the concentration of an aqueous $$NaCl$$ solution that could be used in the blood stream

$$0.16\,\,mol/L$$

$$0.32\,\,mol/L$$

$$0.60\,\,mol/L$$

$$0.45\,\,mol/L$$

## Questions 33 of 50

Question:Isotonic solutions have

Equal temperature

Equal osmotic pressure

Equal volume

Equal amount of solute

## Questions 34 of 50

Question:Which of the following associated with isotonic solutions is not correct

They will have the same osmotic pressure

They have the same weight concentrations

Osmosis does not take place when the two solutions are separated by a semipermeable membrane

They will have the same vapour pressure

## Questions 35 of 50

Question:Which of the following molecules would diffuse through a cell membrane

Fructose

Glycogen

Haemoglobin

Catalase

## Questions 36 of 50

Question:Two solutions of $$KN{O_3}$$ and $$C{H_3}COOH$$ are prepared separately. Molarity of both is $$0.1\,M$$ and osmotic pressures are $${P_1}$$ and $${P_2}$$ respectively. The correct relationship between the osmotic pressures is

$${P_2} > {P_1}$$

$${P_1} = {P_2}$$

$${P_1} > {P_2}$$

$$\frac{{{P_1}}}{{{P_1} + {P_2}}} = \frac{{{P_2}}}{{{P_1} + {P_2}}}$$

## Questions 37 of 50

Question:Which of the following aqueous solutions produce the same osmotic pressure

0.1 M NaCl solution

0.1 M glucose solution

0.6 g urea in 100 ml solution

2,3 and 4 are correct

## Questions 38 of 50

Question:1.0 g of a non-electrolyte solute (X) in 50 ml solution (Molar mass of X = 200)Which of the following aqueous solutions are isotonic $$(R = 0.082$$ atm $${K^{ - 1}}mo{l^{ - 1}})$$

$$0.01\,M$$ glucose

$$0.01\,M\,NaN{O_3}$$

$$500\,ml$$ solution containing $$0.3\,g$$ urea

$$0.04\,N\,HCl$$

1 and 3 are correct

## Questions 39 of 50

Question:The elevation in boiling point of a solution of 13.44g of CuCl$$_2$$ in 1kg of water using the following information will be (Molecular weight of CuCl$$_2$$ = 134.4 and K$$_b$$  = 0.52 K molal$$^{ - 1}$$)

0.16

0.05

0.1

0.2

## Questions 40 of 50

Question:When 10g of a non-volatile solute is dissolved in 100 g of benzene, it raises boiling point by $${1^o}C$$ then molecular mass of the solute is $$({K_b}$$for benzene =2.53k-m$$^{ - 1}$$)

223 g

233 g

243 g

253 g

## Questions 41 of 50

Question:If $${K_f}$$ value of $${H_2}O$$ is 1.86. The value of $$\Delta {T_f}$$ for $$0.1m$$ solution of non-volatile solute is

18.6

0.186

1.86

0.0186

## Questions 42 of 50

Question:1% solution of $$Ca{(N{O_3})_2}$$ has freezing point

$${0^o}C$$

Less than $${0^o}C$$

Greater than $${0^o}C$$

None of the above

## Questions 43 of 50

Question:The freezing point of a 0.01M aqueous glucose solution at 1 atmosphere is $$- {0.18^o}C$$. To it, an addition of equal volume of 0.002 M glucose solution will; produce a solution with freezing point of nearly

$$- {0.036^o}C$$

$$- {0.108^o}C$$

$$- {0.216^o}C$$

$$- {0.422^o}C$$

## Questions 44 of 50

Question:What should be the freezing point of aqueous solution containing $$17\,gm$$ of $${C_2}{H_5}OH$$ in $$1000\,gm$$ of water (water $${K_f}$$ = 1.86 $$\deg - kg\,mo{l^{ - 1}}$$

$$- {0.69^o}C$$

$$- {0.34^o}C$$

$${0.0^o}C$$

$${0.34^o}C$$

## Questions 45 of 50

Question:Which of the following solutions will have the highest boiling point

1% glucose

1% sucrose

1% $$NaCl$$

1% $$CaC{l_2}$$

## Questions 46 of 50

Question:Which one of the following aqueous solutions will exhibit highest boiling point

0.015 M urea

$$0.01\,M\,KN{O_3}$$

$$0.01\,M\,N{a_2}S{O_4}$$

$$0.015\,M\,$$glucose

## Questions 47 of 50

Question:Which of the following will have the lowest vapour pressure

$$0.1M\,KCl$$ solution

$$0.1M$$ urea solution

$$0.1M\,N{a_2}S{O_4}$$ solution

$$0.1M\,{K_4}Fe{(CN)_6}$$ solution

## Questions 48 of 50

Question:The Van't Hoff factor will be highest for

Sodium chloride

Magnesium chloride

Sodium phosphate

Urea

## Questions 49 of 50

Question:The molecular mass of acetic acid dissolved in water is 60 and when dissolved in benzene it is 120.This difference in behaviour of $$C{H_3}COOH$$ is because

Water prevents association of acetic acid

Acetic acid does not fully dissolve in water

Acetic acid fully dissolves in benzene

Acetic acid does not ionize in benzene

## Questions 50 of 50

Question:The correct relationship between the boiling points of very dilute solutions of $$AlC{l_3}\,({t_1})$$ and $$CaC{l_2}\,({t_2})$$, having the same molar concentration is

$${t_1} = {t_2}$$
$${t_1} > {t_2}$$
$${t_2} > {t_1}$$
$${t_2} \ge {t_1}$$