IMPORTANT MCQ AND FILL IN THE BLANKS TYPE QUESTION OF CH-2 SOLUTION WITH ANSWER PART -2

S.No.	Chapter Name	Topic-Concept Name	VSA/SA/Long answer question
1	Solutions	Types Of Solutions	VSA-69  SA TYPE-I (2MARKS)-12  SA TYPE-II (3MARKS)-12  LAQ-1
		Expressing Concentration Of Solutions
		Solubility
		Vapour Pressure Of Liquid Solutions
		Ideal And Non-Ideal Solutions
		Colligative Properties And Determination Of Molar Mass
		Abnormal Molar Masses (REMOVED FROM NEW CBSE COURSES)

 

VERY SHORT ANSWER TYPE QUESTIONS (1 Mark) 

 

S.No.	Topic-Concept Name	VSA (1 Marks)
1	Colligative Properties And Determination Of Molar Mass	An un-ripe mango placed in a concentrated salt solution to prepare pickle shrivels because :-   a) of endosmosis   b) it loses water due to reverse osmosis   c) it gains water due to reverse osmosis   d) it loses water due to osmosis.   Ans- d
2	Colligative Properties And Determination Of Molar Mass	Low concentration of oxygen in tissues of people living at high altitude is due to:-   a) Low temperature   b) Low atmospheric pressure   c) High atmospheric pressure   d) Both low temperature and high atmospheric pressure   Ans-b
3	Solubility	The value of Henry’s constant KH is:-   a) greater for gases with higher solubility   b) greater for gases with lower solubility   c) constant for all gases   d) not related to the solubility of gases.  Ans-b
4	Expressing Concentration Of Solutions	The concentration of solution with its vapour pressure is related in terms of   a) mole fraction   b) parts per million   c) mass percentage   d) molality   Ans-a
5	Colligative Properties And Determination Of Molar Mass	Solution of NaCl freezes at lower temperature than water because-   a) It is a volatile solute   b) It is a double salt   c) It is a coordination compound   d) It is a non- volatile solute  Ans-d
6	Ideal And Non-Ideal Solutions	Characteristics of an ideal solution is:-   a) Obey Raoult’s law, ΔHmix= 0,ΔVmix ≠ 0   b) Obeys Raoult’s law, ΔHmix≠0,ΔVmix = 0   c) Does not obey Raoult’s law, ΔHmix= 0, ΔVmix = 0   d) Obeys Raoult’s law, ΔHmix= 0,ΔVmix= 0   Ans- d
7	Solubility	Which of the following factor affect the solubility of gaseous solute in the fixed volume of the liquid solvent:-   i) Nature of solute   ii) Temperature   iii) Pressure   (a) (i) and (iii) at constant T   (b) (ii) only   (c) (ii) and (iii) only   (d) (iii) only   Ans- a
8	Colligative Properties And Determination Of Molar Mass	Which of the following aqueous solutions should have highest boiling point:-   a) 1.0 M NaOH   b) 1.0 M Na2SO4   c) 0.5 M NaOH   d) 2.0 M Na2SO4  Ans-d out of syllabus
9	Colligative Properties And Determination Of Molar Mass	If molarity of the dilute solution is doubled, the value of the molal depression constant(Kf) will be:-   a) doubled   b) halved   c) tripled   d) Unchanged   Ans- d
10	Ideal And Non-Ideal Solutions	Which of the following is incorrect for ideal solution:-   a) ΔHmix= 0   b) ΔVmix = 0   c) does not obey Raoult’s law over entire range of concentration   d) A – A, B – B, interaction is equal to A – B interaction  Ans-c
11	Colligative Properties And Determination Of Molar Mass	In comparison to 0.01 M solution of glucose, the depression in freezing point of 0.01 M MgCl2 solution is:-   a) Same   b) Twice   c) Three times   d) Six times   Ans-c   freezing point depends on no of ions produced while glucose does not
12	Solubility	Maximum amount of solid solute that can be dissolved in specified amount of given liquid solvent does not depends upon:-   a) Temperature   b) Nature of solute   c) Pressure   d) Nature of solvent   Ans-c
13	Colligative Properties And Determination Of Molar Mass	18 g of glucose is dissolved in 1 kg of water. At what temperature will water boil at 1.013 bar ? Kb for water is 0.52 K kg mol-1   a) 373.2K   b) 378.2K   c) 381.5K   d) 383.2K   ans- a
14	Expressing Concentration Of Solutions	What is the mole fraction of benzene in solution containing 30% by mass in carbon tetrachloride   a) 0.541   b) 0.459   c) 0.514   d) 0.489   Ans-b
15	Colligative Properties And Determination Of Molar Mass	Van’t Hoff factors x, y and z for association, dissociation and no change of solute in the solution respectively are in the order:-   a) x< y < z   b) x> z > y   c) x< z < y   d) x> y > z   Ans-c
16	Colligative Properties And Determination Of Molar Mass	Solution A contains 7g/L of MgCl2 and solution B contains 7g/L of NaCl. At room temperature, the osmotic pressure of :-   a) Solution A is greater than B   b) both have same osmotic pressure   c) Solution B is greater than A   d) Can’t determine   Ans- a due to of ions –out of syllabus
17	Colligative Properties And Determination Of Molar Mass	Vapour pressure of water at 293 k is 17.535 mm Hg. Calculate the vapour pressure of water at 293 K when 25 g of glucose is dissolved in 450 g of water.   a) 15.44 mm Hg   b) 15.43 mm Hg   c) 17.44 mm Hg   d) 17.04 mm Hg   Ans-c
18	Abnormal Molar Masses	Which one of the following electrolytes has the same value of Van’t Hoff factor (i) as that of Al2(SO4)3 (if all are 100% ionized)   a) K2SO4   b) K3[Fe(CN)6]   c) Al(NO3)3   d) K4[Fe(CN)6]   Ans- d due to equal ions
19	Expressing Concentration Of Solutions	Calculate the amount of benzoic acid required to prepare 250mL of 0.15 M solution in methanol.   a) 4.575 g   b) 5.475g   c) 4.015g   d) 5.015g   Ans-a
20	Expressing Concentration Of Solutions	An antifreeze solution is prepared from 222.6 g of ethylene glycol and 200 g of water . What is the molality of the solution?   a) 15.97m   b) 19.57 m   c) 17.07 m   d) 17.95m   Ans-d
21	Ideal And Non-Ideal Solutions	1 mole of liquid A and 2 moles of liquid B, make a solution having a total vapour pressure of 38 torr. The vapour pressure of pure A and pure B are 45 torr and 36 torr respectively. The described solution-   a) is an ideal solution   b) shows negative deviation   c) is a minimum boiling azeotrope   d) has negative ΔV   Ans-b
22	Colligative Properties And Determination Of Molar Mass	Of the following 0.10 M aqueous solutions, which one will exhibit largest freezing point depression-   a) KCl   b) C6H12O6   c) A2(SO4)3   d) K2SO4    Ans- c
23	Ideal And Non-Ideal Solutions	23.  The solutions which obey ______________ law over the entire range of concentration are known as ideal solutions.    Ans- Raoult's
24	Colligative Properties And Determination Of Molar Mass	24.  The pressure that stops the flow of solvent to solution side through semipermeable membrane is ____________ pressure of the solution.   Ans- osmotic
25	Colligative Properties And Determination Of Molar Mass	25.  S.I unit of Molal elevation constant (Kb) is _____________________ .    Ans- K Kg/mole
26	Expressing Concentration Of Solutions	26.  Molality is preferred over Molarity due to ___________ independence.   Ans- volume
27	Solubility	27.  Aquatic species are more comfortable in cold water due to __________ solubility of oxygen.   Ans- high
28	Colligative Properties And Determination Of Molar Mass	28.  The vapour pressure of the solution decreases when a _________ solute is added to the solvent.   Ans- non volatile
29	Colligative Properties And Determination Of Molar Mass	29.  Colligative properties of the solution depend upon _____ of solute particles.   Ans- number
30	Ideal And Non-Ideal Solutions	30.  The solution of ethanol in acetone will show _______ deviation from Raoult’s law.   Ans-positive
31	Colligative Properties And Determination Of Molar Mass	31.  Size of resin___________ when kept in water due to osmosis.  Ans-increase
32	Expressing Concentration Of Solutions	32.  On dilution, molarity of the solution is _______________ than initial concentration.  Ans-decrease
33	Expressing Concentration Of Solutions	33.  Molarity of the solution formed by mixing 0.4g of NaOH in 1000ml water will be ______ mol/L.   Ans- 0.01
34	Abnormal Molar Masses	34.  Van’t hoff factor for the solution containing BaCl2will be ____________.   Ans- 3 out of syllabus
35	Ideal And Non-Ideal Solutions	35.  When A-B interactions are _________ than A-A and B-B interactions, then the solution will show negative deviation.   Ans- stronger
36	Solubility	36.  Ionic solids are generally soluble in ________ solvents.   Ans- ionic or polar
37	Colligative Properties And Determination Of Molar Mass	37.  Degree of dissociation of strong electrolyte can be expressed in term of Van’t hoff factor______________.  Out of syllabus
38	Solubility	38.  With increase in temperature, KH for gases increases whereas solubility ____________.  Ans-decreases
39	Colligative Properties And Determination Of Molar Mass	39.  In cold countries ethylene glycol causes _____ of water in car radiators.   Ans- antifreeze
40	Colligative Properties And Determination Of Molar Mass	40.  In the solution of ethanoic acid in benzene, the value of ΔTb for ethanoic acid will be___________ of the normal value.   Ans- smaller due to association of molecules
41	Colligative Properties And Determination Of Molar Mass	41.  1M aqueous solution of NaCl and 2M aqueous solution of glucose will have ____________boiling point.   Ans -same
42	Abnormal Molar Masses	42.  When concentration of NaCl is doubled in its solution, the osmotic pressure will become _________ times.   Ans double
43	Expressing Concentration Of Solutions	43.  25 % w/w indicates _______ g of solute in 1000g solution.  Ans-250gm
44	Ideal And Non-Ideal Solutions	44.  The solutions showing negative deviation from Raoult’s law are known as _____________ boiling azeotropes.   Ans- maximum
45	Expressing Concentration Of Solutions	45.  1 litre of 0.1 M solution of H2SO4 contains ___________g of H2SO4.   Ans-9.8g
46	Types of Solutions	46.  Amalgam of Mercury with sodium is a type of _______ solution.   Ans- solid
47	Colligative Properties and Determination Of Molar Mass	47.  Out of equimolar solution of H2SO4 and HNO3 __________ will have higher freezing point.   Ans-Sulphuric acid due to produce more no of ions than nitric acid

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