ECAT Chemistry Chapter 9 Solutions Online Test With Answers

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ECAT Chemistry Chapter 9 Solutions Online Test

Sr. # Questions Answers Choice
1 A solution containing maximum amount of solute dissolved at a given temperature is called Saturated solution Unsaturated solution Supersaturated solution Impure solution
2 The process in which solvent particles surround solute particles is called Hydrolysis Hydration Solvation Dissolution
3 A solution of two component is called Binary solution Dilute solution Original solution Standard solution
4 Coligative properties are the properties of Dilute solution which behave as nearly ideal solutions Concentrated solutions which behave as nearly non-ideal solution Both (i) and (ii) Neither (i) and (ii)
5 Which is independent of temperature Molarity Molality Normality Mole fraction
6 In azeotropic mixture showing negative deviation form Raoult's law show Higher b.p. than either Lower b.p. than either No change in b.p. None of these
7 An azeotropic mixture of two liquids boils at a lower temperature than either of them when lower temperature It is saturated it shows positive deviation from Raoult's law It shows negative deviation form Raoult's law It is metastable
8 Use of glycol as anti freeze in the automobile is an important application of Colligative property Raoult's law Fractional crystallization Prrhenivs law
9 Compared to a 1.0M aqueous solution of calcium chloride will have The same freezing and boiling point A lower freezing point and lower boiling point A lower freezing point and higher boiling point A higher freezing point and higher boiling point
10 A one thousand dm3sample of water contains one gram of iron (iii) ions what is the concentration in parts per million of Fe3f(eq) in parts per million 0.001 0.01 0.1 1.0
11 The relative lowering of vapour pressure is equal to the mole fraction of the solute is statement of Rault law Henry law Dalton law Grahms law
12 Two solutions of NaCl and KCl are prepared separately by dissolving 0.1 M of the solute in water. Which of the following statements is not true for these solution KCl solution will have higher boiling point than NaCl solution Both the solutions have same boiling KCl and NaCl solution possess same vapour pressure KCl solution possess same freezing point at NaCl solution
13 Which of the following solution has the highest boiling point 5.85% solution of sodium chloride 18.0% solution of glucose 6.0% solution of urea All have the same boiling point
14 Which statement is not true. A solution is a homogeneous mixture of Two ionic substance like NaCl and HCl Two molecular substances sugar and water A solute and a solvent 1% NaHCO<sub>3</sub>in water NaCl and sand
15 The freezing mixture used in ice cream machine consists of ice and NaCI KCI MgCI<sub>2</sub> NaNO<sub>3</sub>
16 3.6% WN solution of HCI has the molairity 1.0 1.15 0.98 1.98
17 If 5.85 of NaCI are dissolved in 90g of water the mole fraction of NaCI is 0.1 0.01 0.2 0.0196
18 According to Raoult's law Relative lowering of V.P. is equal to mole fraction of solute The lowering of V.P. is directly proportional to mole fraction of solute V.P. of solvent above solution is equal to product of V.P. of pure solvent and mole fraction of solvent ins solution All of the above
19 A solutiion of 0.5 mole camphor in 100 grmas chloroform (Kb= 0.322) has rise in boiling point than that of chloroform by 0.81°C 1.61°C 1.81°C 0.61°C
20 Which of the following half molar solutions will have lowest freezing point Solution of non-volatile, none electrolyte Solution of non volatile, weak electrolyte Solution of non volatile strong electrolyte Solution of volatile, non electrolyte
21 Which of the following salts mixed with ice to make the freezing mixture used in ice cream machine KNO<sub>3</sub> NH<sub>4</sub>NO<sub>3</sub> AgNO<sub>3</sub> Mg(NO<sub>3</sub>)<sub>2</sub>
22 Which one of the following is used as antifreeze in the radiator Methanol Ethanol Ethylene glycol Glycerin
23 Which one of the following solution will have higher vapour pressure than that of water Aqueous solution of methanol Aqueous solution of HCI Aqueous solution of glucose Aqueous solution of urea
24 Solubility cure of Na2SO410H2shows Constant increase of solubility Constant decreases of solubility Discontinuously solubility wit temperature None of above
25 Which of the following aqueous solutions have the lowest freezing point 5.85% NaCI 6% urea 34.2 sucrose All of them have same freezing points
26 Aqueous solution of glucose C6H12O6, boils at 100.052°C. The solution contains 180 grams glucose in 1 kg water 18 grams glucose in 1 kg water 1.8 grams glucose in 1 kg water 3.6 grams glucose in 1 kg
27 Solubility of a substance in water decreases with rise in temperature except CaCI<sub>2</sub>. 6H<sub>2</sub>O Pb(NO<sub>3</sub>)<sub>2</sub> K<sub>2</sub>Cr<sub>2</sub>O<sub>7</sub> Ce<sub>2</sub>(SO<sub>4</sub>)<sub>3</sub>
28 Saturated solution of a solid is prepared at a constant temperature. 100 cm3of this saturated solution is evaporated in a china dish. The mass of the residue is called Azetropic mixture Solubility Solubility product Equilibrium constant
29 Which one of the following has continuous solubility curve NH<sub>4</sub>NO<sub>3</sub> CaCI CaCI<sub>2</sub>. 6H<sub>2</sub>O Na<sub>2</sub>SO<sub>4</sub>. 10H<sub>2</sub>O
30 Which one of the following has discontinuous solubility curve CaCI<sub>2</sub>6H<sub>2</sub>O NaCI KCI NaNO<sub>3</sub>
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