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DAILY PRACTICE PROBLEMS (DPP) Subject : Physical/Inorg.Chemistry Date : DPP No. 57 to 58 Class : XIII Course : DPP No.57 DPP No.1 Total Marks : 30 Max. Time : 30 min. Single choice Objective (no negative marking) Q.1 to Q.3 (3 Marks, 3 Min.) [9, 9] Comprehension ('–1' negative marking) Q.4 to Q.6 (3 marks 3 min.) [9, 9] Subjective Questions (no negative marking) Q.7 to Q.9 (4 marks 4 min.) [12, 12] 1. A current is passed through 2 voltameters connected in series. The first voltameter contains XSO4 (aq.) and second has Y2SO4 the relative atomic masses of X and Y are in the ratio of 2 : 1. The ratio of the mass of X liberated to the mass of Y liberated is (1) 1 : 1 (2) 1 : 2 (3) 2 : 1 (4) None of the above 2. For the electrolytic production of NaClO4 from NaClO3 as per the equation, NaClO3 + H O  NaClO + H2, how many faradays of electricity will be required to produce 0.5 mole of NaClO4, assuming 60% efficiency ? (1) 0.835 F (2) 1.67 F (3) 3.34 F (4) 1.6 F 3. To obs

DAILY PRACTICE PROBLEMS (DPP) Subject : Physical/Inorg.Chemistry Date : DPP No. 57 to 58 Class : XIII Course : DPP No.1 Total Marks : 30 Max. Time : 30 min. Single choice Objective (no negative marking) Q.1 to Q.3 (3 Marks, 3 Min.) [9, 9] Comprehension ('–1' negative marking) Q.4 to Q.6 (3 marks 3 min.) [9, 9] Subjective Questions (no negative marking) Q.7 to Q.9 (4 marks 4 min.) [12, 12] 1. A current is passed through 2 voltameters connected in series. The first voltameter contains XSO4 (aq.) and second has Y2SO4 the relative atomic masses of X and Y are in the ratio of 2 : 1. The ratio of the mass of X liberated to the mass of Y liberated is Js.khesala;ksftr2oksYVehsVjesals/k jkizokfgrdhtkrhgSAizFkeoksYVehVj]XSO4(tyh;);qDrgSrFk f}rh;Y2SO4 ;qDrgSaAXrFk Ydkvkisf{kdijek.kqnzO;eku2:1vuqikresagSaAeqDrgq,XrFk eqDrgq,YdsnzO;ekuksadkvuqikr gksxkgSA (1*) 1 : 1 (2) 1 : 2 (3) 2 : 1 (4)NoneoftheabovemijksDresalsdksbZugha Sol. XSO4 (

DAILY PRACTICE PROBLEMS (DPP) Subject : Physical/Inorg.Chemistry Date : DPP No. 59 to 60 Class : XIII Course : DPP No.1 Total Marks : 27 Max. Time : 27 min. Single choice Objective (no negative marking) Q.1 to Q.5 (3 Marks, 3 Min.) [15, 15] Multiple choice objective (no negative marking) Q.6 to Q.7 (4 marks 4 min.) [8, 8] Subjective Questions (no negative marking) Q.8 (4 marks 4 min.) [4, 4] ANSWER KEY DPP No.-59 1. 4 2. 3 3. 3 4. 4 5. 4 6. 2,4 7. 2,3 8. 5.3. 1. Assuming the salts to be completely ionized in solution, which of the following has highest osmotic pressure. (1) 1% CsCl w/w (2) 1% RbCl w/w (3) 1% KCl w/w (4*) 1% NaCl w/w ekukfdyo.kfoy;uesaiw.kZr;kvk;furgkstkrsgSrcfuEuesafdldkijklj.knkcmPpregSA (1) 1%CsClHk j@Hkkj (2) 1%RbClHkkj@Hk j (3) 1%KClHkkj@Hkkj (4*) 1%NaClHk j@Hkkj 2. What weight of glucose dissolved in 100 grams of water will produce the same lowering of vapour pressure as one gram of urea dissolved in 50 grams of water, at the same temperature?

DAILY PRACTICE PROBLEMS (DPP) Subject : Physical/Inorg.Chemistry Date : DPP No. 59 to 60 Class : XIII Course : DPP No.59 DPP No.1 Total Marks : 27 Single choice Objective (no negative marking) Q.1 to Q.5 (3 Marks, 3 Min.) Max. Time : 27 min. [15, 15] Multiple choice objective (no negative marking) Q.6 to Q.7 (4 marks 4 min.) [8, 8] Subjective Questions (no negative marking) Q.8 (4 marks 4 min.) [4, 4] 1. Assuming the salts to be completely ionized in solution, which of the following has highest osmotic pressure. (1) 1% CsCl w/w (2) 1% RbCl w/w (3) 1% KCl w/w (4) 1% NaCl w/w 2. What weight of glucose dissolved in 100 grams of water will produce the same lowering of vapour pressure as one gram of urea dissolved in 50 grams of water, at the same temperature? (1) 3 gms (2) 5 gms (3) 6 gms (4) 4 gms 3. Three solutions are prepared by adding 'w' gm of 'A' into 1kg of water, 'w' gm of 'B' into another 1 kg of water and 'w' gm of 'C' i

DAILY PRACTICE PROBLEMS (DPP) Subject : Physical/Inorg.Chemistry Date : DPP No. 55 to 56 Class : XIII Course : DPP No.1 Total Marks : 39 Max. Time : 39 min. Single choice Objective (no negative marking) Q.1 to Q.9 (3 Marks, 3 Min.) [27, 27] Multiple choice objective (no negative marking) Q.10 (4 marks 4 min.) [4, 4] Subjective Questions (no negative marking) Q.11 to Q.12 (4 marks 4 min.) [8, 8] ANSWER KEY DPP No.-55 1. 2 2. 1 3. 1 4. 3 5. 4 6. 2 7. (a) 1 ; (b) 2 8. 4 9. 2 10. 1,2,4 11. – 0.0785 V. 12. E° = 0.782 V 1. Which of the following concentration cells will produce maximum Ecell at 298 K. [Take pH = 1.0 atm in each case.] 298KijfuEuesalsdkSulklkUnzrklsyvf/kdreEcell mRiUudjsxkA [izR;sdifjfLFkfresa pH2 =1.0atmç;qDrdhft,] (1) Pt | H (g) | H+ (0.01 M) || H+ (0.1 M) | H (g) | Pt (2*) Pt | H (g) | NH Cl (0.01 M) || HCl (0.1 M) | H (g) | Pt 2 2 2 4 2 (3) Pt | H (g) | H+ (0.1 M) || H+ (0.2 M) | H (g) | Pt (4) Pt | H (g) | H+ (pH = 0.0) || H+ (pH = 0.0) | H (g) | Pt. 2 2

DAILY PRACTICE PROBLEMS (DPP) Subject : Physical/Inorg.Chemistry Date : DPP No. 55 to 56 Class : XIII Course : DPP No.55 DPP No.1 Total Marks : 39 Max. Time : 39 min. Single choice Objective (no negative marking) Q.1 to Q.9 (3 Marks, 3 Min.) [27, 27] Multiple choice objective (no negative marking) Q.10 (4 marks 4 min.) [4, 4] Subjective Questions (no negative marking) Q.11 to Q.12 (4 marks 4 min.) [8, 8] 1. Which of the following concentration cells will produce maximum Ecell at 298 K. [Take pH = 1.0 atm in each case.] (1) Pt | H (g) | H+ (0.01 M) || H+ (0.1 M) | H (g) | Pt (2) Pt | H (g) | NH Cl (0.01 M) || HCl (0.1 M) | H (g) | Pt 2 2 2 4 2 (3) Pt | H (g) | H+ (0.1 M) || H+ (0.2 M) | H (g) | Pt (4) Pt | H (g) | H+ (pH = 0.0) || H+ (pH = 0.0) | H (g) | Pt. 2 2 2 2 2. Given that (at T = 298 K) Cu(s) | Cu2+ (1.0 M) || Ag+ (1.0 M) | Ag(s) Eº = 0.46 V Zn(s) | Zn2+ (1.0 M) || Cu2+ (1.0 M) | Cu(s) cell Eºcell = 1.10 V Then Ecell for, Zn | Zn (0.1 M) || Ag (1.0 M) | Ag at 298 K

DAILY PRACTICE PROBLEMS (DPP) Subject : Physical/Inorg.Chemistry Date : DPP No. 53 to 54 Class : XIII Course : DPP No.1 Total Marks : 41 Max. Time : 41 min. Single choice Objective ('–1' negative marking) Q.1 to Q.11 (3 marks 3 min.) [33, 33] Subjective Questions ('–1' negative marking) Q.12 to Q.13 (4 marks 4 min.) [8, 8] ANSWER KEY DPP No.-53 1. 1 2. 4 3. 1 4. 2 6. 4 7. 2 8. 2 9. 4 10. 4 11. 3 12. (a) No. ; (b) Yes 13. (a) F (b) F (c) F (d) F (e) F (f) F (g) T (h) T (i) T (j) F (k) T (l) T (m) T 1. Which statement about standard reduction potentials is correct (1*) E  2 (2) E  = Zero at all temperature = zero at 298 K D / D2 (3) A redox reaction is feasible if sum of SRP of oxidant and that of reductant is a positive quantity (4) K2Cr2O7 (acid) is stronger oxidising agent than KMnO4 (acid) [Given : E – 2 = 1.51 V ; E 2 – 3  = 1.33 V] MnO4 / Mn Cr2O7 / Cr ekudvip;u foHkods fy,dkSulk dFkulgh gS&

DAILY PRACTICE PROBLEMS (DPP) Subject : Physical/Inorg.Chemistry Date : DPP No. 53 to 54 Class : XIII Course : DPP No.53 DPP No.1 Total Marks : 41 Max. Time : 41 min. Single choice Objective ('–1' negative marking) Q.1 to Q.11 (3 marks 3 min.) [33, 33] Subjective Questions ('–1' negative marking) Q.12 to Q.13 (4 marks 4 min.) [8, 8] 1. Which statement about standard reduction potentials is correct (1) E  2 (2) E  = Zero at all temperature = zero at 298 K D / D2 (3) A redox reaction is feasible if sum of SRP of oxidant and that of reductant is a positive quantity (4) K2Cr2O7 (acid) is stronger oxidising agent than KMnO4 (acid) [Given : E – 2 = 1.51 V ; E 2 – 3  = 1.33 V] MnO4 / Mn Cr2O7 / Cr 2. A solution containing NH Cl and NH OH has a hydroxide ion concentration of 10 6 mol lit 1. Which of the 4 4 following hydroxides could be precipitated when this solution is added in equal volume to a solution cont

DAILY PRACTICE PROBLEMS (DPP) Subject : Physical/Inorg.Chemistry Date : DPP No. 51 to 52 Class : XIII Course : DPP No.51 DPP No.1 Total Marks : 38 Max. Time : 38 min. Single choice Objective ('–1' negative marking) Q.1 to Q.10 (3 marks 3 min.) [30, 30] Subjective Questions ('–1' negative marking) Q.11 to Q.12 (4 marks 4 min.) [8, 8] 1. The solubility of A X is y mol dm 3 . Its solubility product is : (1) 6 y4 (2) 64 y4 (3) 36 y5 (4) 4 y3 2. The solubility of sparingly soluble electrolyte MmAa in water is given by the expression :  (1) s =  Ksp m  a   (2) s =  Ksp 1/ m  a   (3) s =  Ksp m  a   (4) s =  Ksp 1/ m  a   mm aa   mm aa   ma am   ma am          3. Three sparingly soluble salts M2X, MX and MX3 have the solubility product are in the ratio of 4: 1 : 27. Their solubilities will be in the order (1) MX3 > MX > M2 X (2) MX3 > M2X > MX (3) MX > MX3 > M2X (4)

DAILY PRACTICE PROBLEMS (DPP) Subject : Physical/Inorg.Chemistry Date : DPP No. 51 to 52 Class : XIII Course : DPP No.1 Total Marks : 38 Max. Time : 38 min. Single choice Objective ('–1' negative marking) Q.1 to Q.10 (3 marks 3 min.) [30, 30] Subjective Questions ('–1' negative marking) Q.11 to Q.12 (4 marks 4 min.) [8, 8] 1. (4) 2. (2) 3. (2) 4. (1) 5. (2) 6. (2) 7. (2) 8. (3) 9. (1) 10. (3) 1. The solubility of A X is y mol dm 3 . Its solubility product is : A X dhfoys;rk yeksydm3 .gSAbldk foys;rkxq.kuQy gSA (1) 6 y4 (2) 64 y4 (3) 36 y5 (4*) 4 y3 2. The solubility of sparingly soluble electrolyte MmAa in water is given by the expression : ty esavYifoys;fo|qrvi?kV~;dhfoys;rkfdlO;atdds}kjknhtkrhgSA  (1) s =  Ksp m  a   (2*) s =  Ksp 1/ m  a   (3) s =  Ksp m  a   (4) s =  Ksp 1/ m  a   mm aa   mm aa   ma am   ma am          3. Three sparingly soluble sal