a. A is less concentrated than B b. A is more same concentration c. Both have same concentratio d. None of these Ans. a Explanation : Osmosis occurs from dilute solution to concentrate solution. Therefore solution A is less concentrated …
a. Solute molecules only b. Solvent molecules only c. Solute and solvent molecules both d. Neither solute nor solvent molecules Ans. b (7)
(P1 ) , 10 g urea (P2 ) and 10g sucrose (P3) are dissolved in 250 mL of water is a. P1 >P2 > P3 b. P3 > P1 > P2 c.P2 >P1 > P3 d. P2 >P3 > P1 Ans. c (11)
a. > 80 mL b. < 80 mL c. = 80 mL d. ≥ 80 mL Ans. b (23)
a. There will be no net movement across the membrane b. Glucose will flow across the membrane into urea solution c. Urea will flow across the membrane into glucose solution d. Water will flow from urea solution into glucose solution …
a. Carbondisulphide – acetone b. Benzene – toluene c. Acetone – chloroform d. n- hexane – n- heptane e. Ethanol – acetone Ans. c Explanation : Acetone and chloroform form hydrogen bonds between he molecules of each other so in …
100° C) and HCl (b.p. 85° C) boils at 108.5 ° C. When this mixture is distilled it is possible to obtain a. Pure HCl b. Pure water c. Pure water as well as pure HCl d. Neither HCl nor …
a. Zero and zero b. +ve and zero c. -ve and zero d. -ve and -ve Ans. a (4)
a. Benzene + toluene b. n – hexane + n – heptane c. Ethyl bromide +ethyl iodide d. CCl4 + CHCl3 Ans. d (42)
a. CH3 COCH3 + CS2 b. C 6 H 6 + CH3 COCH3 c. CCl4+ CHCl3 d. CH3 COCH + CHCl3 Ans. d (7)
Mp . Whih of the following can be used to calculate molecular mass of the solute in terms of osmotic pressure (m = Mass of solute, V = Volume of solution and π = Osmotic pressure) a. Mp = (m/ π …
a. Heptane + Octane b. Water + Nitric acid c. Ethanol + water d. Acetone + Carbon disulphide Ans. b (11)
a. 84% HCl b. 22.2% HCl c. 63% HCl d. 20.2 % HCl Ans.d Explanation : It is known that azeotropic mixture of HCl and water has 20.2% HCl (9)
a. A – B interactions are stronger than those between A – A or B- B b. Vapour pressure of solution increase because more number of molecules of liquids A and B can escape from the solution c. Vapour pressure …
327° C and concentraiton C osmotic pressure of a solution is P, the same solutions at concentration C/2 and a temperature 427° C shows osmotic pressure 2 atm, value of P will be a. 12/7 b. 24/7 c. 6/5 d. …
a. Δmix G = 0 at constant T and P b. Δmix S = 0 at constant T and P c. Δmix V ≠ 0 at constant T and P d. Δmix H = 0 at constant T and P …
a. Stable structure complex b. Binary liquid mixture c. Zeotropic liquid mixture d.Azeotropic liquid mixture Ans. d Explanation : Azeotropic mixture is mixture of two liquid which boils at on particular temperature like a pure liquid and distils over in …
a. 0.033 b. 0.066 c. 0.33 x 10-2 d. 3 Ans. c (5)
Information : On adding acetone to methanol some of the hydrogen bonds between methanol molecules break a. At specific composition methanol acetone mixture will form minimum boilingg azeotrope and will show positive deviation from Raoult’s law b. At specific composition …
a. Ideal solution b. Positive deviation with non ideal solution c. Negative devitation with non ideal solution d. Normal solution Ans. c Explanation : For the solution with negative deviations there is an intermediate composition for which the vapour pressure …
Information : i. In bromoethane and chloro ethane mixture inter-molecular interaction of A – A and B- B type are nearly same as A-B type interactions ii. In ethanol and acetone mixture A- A or B- B type intermolecular interaction …
a. Water-nitric acid b. Benzene- method c. Water-hydrochloric acid d. Acetone chloroform Ans. b (9)
a. ΔS mix b. ΔV mix c ΔP = PObserved – P Raoult d. ΔH mix Answer : a (15)
a. ΔS mix = 0 b. ΔH mix = 0 c. It obeys Raoult’s law d. ΔV mix = 0 ANSWER : A Explanation : For the ideal solution ΔS mix is not equal to zero (13)
a. The enthalpy of mixing is zero b. The entropy of mixing is zero c. The free energy of mixing is zero d. The free energy as well as the entropy of mixing are each zero ANSWER: A Explanation : …
a. It follows Raoult’s law b. ΔHmix = 0 c. Δ Vmix = 0 d. All of these ANSWER : D (10)
a. C2 H5 Br and C2 H5 I b. C6 H5 Cl and C6 H5Br c. C6 H6 and C6 H5 CH3 d. C2 H5 I and C2 H5 OH ANSWER : D Explanation : C2 H5 I and C2 …
a. Acetone-Chloroform b. Acetone Benzene c. Chloroform Ether d. Chloroform Benzene ANSWER : B (36)
a. Benzene- Chloroform b. Benzene Acetone c. Benzene Ethanol d.Benzene Carbon tetrachloride ANSWER : A Explanation : Benzene chloroform solution shows negative deviation from Raoult’s law (8)
a. CHCl3 + (CH3 )2 CO b. (CH3 )2 CO + C6 H5 NH2 c. CHCl3 + C6 H6 d.(CH3 )2 CO + CS2 e. C6 H5 N + CH3 COOH ANSWER : D Explanation : Acetone is a polar solvent where …
a. Methanol and acetone b. Chloroform and acetone c.Nitric acid and water d. Phenol and aniline ANSWER . A Explanation : In pure methnol, molecules are hydrogen bonded. One adding actone, its molecules get in between the host molecules and …
≤ x1 ≤ 1. The second component must follow Raoult’s law in the range when x2 is a. Close to zero b. Close to 1 c.0 ≤ x2 ≤ 0.5 d. 0 ≤ x2 ≤ 1 ANSWER . D Explanation : When …
a. The solution formed is an ideal solution b. The solution is non-ideal showing +ve deviation from Raoult’s Law c. The solution is non ideal showing -ve deviation from Raoult’s Law d. n- heptane shows + ve deviation while ehtnaol …
a. Behaves like a near ideal solutions b. Obeys Raoult’s law c. Shows a negative deviation from Raoult’s law d. Shows a positive deviation from Raoult’s law Ans. d (8)
a. Ethanol- Acetone b. Chlorobenzene- Bromobenzene c. Chloroform- Acetone d. Benzene Toluene ANSWER . C Explanation : Due to hydrogen bonding (5)
a. 0.027 mmHg b. 0.028 mmHg c. 0.017mmHg d. 0.031 mmHg Ans. c (46)
A. Normal boiling point B. Normal freezing point C. Enthalpy of vaporization a. A only b. A and B only c. A and C only d. A , B and C ANSWER . B (11)
κ J/mole, the boiling point of water at 23 mm pressure will be a. 250 K b. 294 K c. 51.6 K d. 12.5 K Ans.b (12)
(a) If both the assertion and the reason are true and the reason is a correct explanation of the assertion (b) If both the assertion and reason are true but the reason is not a correct explanation of the assertion …
(a) If both the assertion and the reason are true and the reason is a correct explanation of the assertion (b) If both the assertion and reason are true but the reason is not a correct explanation of the assertion …