Physical Chemistry Questions
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![6 02 x 1020 molecules of a substance weigh 44 mg What is the molar mass of the substance](https://media.kunduz.com/media/sug-question-candidate/20200702061437046257-1868846.jpg?w=256)
Physical Chemistry
General6 02 x 1020 molecules of a substance weigh 44 mg What is the molar mass of the substance
![19 Although q is a path dependent function but q is independent P of path because a AH is independent of path b U P and V are state functons and H depends on them c both a and b A d none of these 9000 b](https://media.kunduz.com/media/sug-question-candidate/20200613084916091026-1694569.jpg?w=256)
Physical Chemistry
Energetics19 Although q is a path dependent function but q is independent P of path because a AH is independent of path b U P and V are state functons and H depends on them c both a and b A d none of these 9000 b
![2 molecules ions 1 XeF4 4 SiF4 2 BF AIEEE 2006 The decreasing values of bond angles from NH3 1069 to SbH3 919 down group 15 of the periodic table is due are all the bonds not equal 3 SF4 to 1 decreasing lp bp repulsion 3 increasing bp bp repulsion 2 increasing electronegativity 4 increasing p orbital character in sp In which of the following ionization process the bond order has increased and the magnetic behaviour has changed AIEEE 2007](https://media.kunduz.com/media/sug-question-candidate/20200618123729192247-1513740.jpg?w=256)
Physical Chemistry
General2 molecules ions 1 XeF4 4 SiF4 2 BF AIEEE 2006 The decreasing values of bond angles from NH3 1069 to SbH3 919 down group 15 of the periodic table is due are all the bonds not equal 3 SF4 to 1 decreasing lp bp repulsion 3 increasing bp bp repulsion 2 increasing electronegativity 4 increasing p orbital character in sp In which of the following ionization process the bond order has increased and the magnetic behaviour has changed AIEEE 2007
![If 100 mL of 0 100 M Na SO is added to 200 mL of 0 150 M NaCl what is the concentration of Na ions in the final solution Assume that the volume are additive A 0 133 M B 0 167 M C 0 250 M D 0 350 M illilitan of 0 300 M phosphoris](https://media.kunduz.com/media/sug-question-candidate/20200710164548689512-1759662.jpg?w=256)
Physical Chemistry
GeneralIf 100 mL of 0 100 M Na SO is added to 200 mL of 0 150 M NaCl what is the concentration of Na ions in the final solution Assume that the volume are additive A 0 133 M B 0 167 M C 0 250 M D 0 350 M illilitan of 0 300 M phosphoris
![Calculate the mass of non volatile solute having molecular mass 40 which should be dissolved in 57 gm octane to reduce its vapour pressure to 80](https://media.kunduz.com/media/sug-question-candidate/20200621162922928391-1339674.jpg?w=256)
Physical Chemistry
SolutionsCalculate the mass of non volatile solute having molecular mass 40 which should be dissolved in 57 gm octane to reduce its vapour pressure to 80
![No of oxalic acid molecules in 100 mL of 0 02 N oxalic acid are a 6 023 1020 c 6 023x1022 b 6 023x1021 d 6 023 x 1023](https://media.kunduz.com/media/sug-question-candidate/20200710152314025847-1648442.jpg?w=256)
Physical Chemistry
GeneralNo of oxalic acid molecules in 100 mL of 0 02 N oxalic acid are a 6 023 1020 c 6 023x1022 b 6 023x1021 d 6 023 x 1023
![If uncertainty of position of electron is zero the uncertainty in its momentum would be a Zero b h 2n c h 4 d x 8](https://media.kunduz.com/media/sug-question-candidate/20200711084454772732-1648442.jpg?w=256)
Physical Chemistry
GeneralIf uncertainty of position of electron is zero the uncertainty in its momentum would be a Zero b h 2n c h 4 d x 8
![9 The vapour pressure of an aqueous solution of glucose is 750 mm Hg at 373 K The molality of this solution at the same temperature is 1 0 74 molal 2 0 84 molal 3 0 70 molal 4 0 50 molal](https://media.kunduz.com/media/sug-question-candidate/20200610100136423771-1807739.jpg?w=256)
Physical Chemistry
Solutions9 The vapour pressure of an aqueous solution of glucose is 750 mm Hg at 373 K The molality of this solution at the same temperature is 1 0 74 molal 2 0 84 molal 3 0 70 molal 4 0 50 molal
![46 A metal X crystallises in a face centred cubi arrangement with the edge length 862 pm What is the shortest separation of any two nuclei of the atom b 707 pm d 609 6 pm a 406 pm c 862 pm](https://media.kunduz.com/media/sug-question-candidate/20200630160628393145-1377048.jpg?w=256)
Physical Chemistry
Gaseous and liquid states46 A metal X crystallises in a face centred cubi arrangement with the edge length 862 pm What is the shortest separation of any two nuclei of the atom b 707 pm d 609 6 pm a 406 pm c 862 pm
![The vapour pressure of two pure liquids A and B that form an ideal solution are 100 and 900 torr respectively at temperature T This liquid solution of A and B is composed of 1 mole of A and 1 mole of B What will be the pressure when 1 mole of mixture has been vaporized a 800 torr b 500 torr c 300 torr d None of these rectly the changes in thermodynamic properties during](https://media.kunduz.com/media/sug-question-candidate/20200705150813406555-1871048.jpg?w=256)
Physical Chemistry
SolutionsThe vapour pressure of two pure liquids A and B that form an ideal solution are 100 and 900 torr respectively at temperature T This liquid solution of A and B is composed of 1 mole of A and 1 mole of B What will be the pressure when 1 mole of mixture has been vaporized a 800 torr b 500 torr c 300 torr d None of these rectly the changes in thermodynamic properties during
![When a vander waal s gas undergoes free expansion then it MP PET 2009 temperature a Decreases b Increases c Does not change d Depends upon the nature of the gas](https://media.kunduz.com/media/sug-question-candidate/20200701052124139471-705052.jpg?w=256)
Physical Chemistry
Gaseous and liquid statesWhen a vander waal s gas undergoes free expansion then it MP PET 2009 temperature a Decreases b Increases c Does not change d Depends upon the nature of the gas
![A beam of specific kind of particles of velocity 2 1 x 107 m s is scattered by a gold nuclei Find out specific charge charge mass of this particle if the distance of approach is 2 5 10 4 m a 4 84 107 C kg b 4 84 x 10 7 C kg c 2 42 x 107 C kg d 3x10 12 C](https://media.kunduz.com/media/sug-question-candidate/20200611071814089005-1519193.jpg?w=256)
Physical Chemistry
GeneralA beam of specific kind of particles of velocity 2 1 x 107 m s is scattered by a gold nuclei Find out specific charge charge mass of this particle if the distance of approach is 2 5 10 4 m a 4 84 107 C kg b 4 84 x 10 7 C kg c 2 42 x 107 C kg d 3x10 12 C
![1 Consider the change in oxidation state of bromine corresponding to different emf values as shown in the given diagram dillups HBrO 3000 BrO 1 82 V BrO 3 4 ad obru ohas oe VEW BUL ai fiduridiliups 1 0652 V Br BrO3 1 5 V HBrO Br2 1 595 V go to tolls disproportionation Then the species undergoing is a BrO3 c Br2 UT 1 noi HBrO b BrO4 e 00 21 bon dieroverdi b BrO4](https://media.kunduz.com/media/sug-question-candidate/20200714060734948445-1879389.jpg?w=256)
Physical Chemistry
Electrochemistry1 Consider the change in oxidation state of bromine corresponding to different emf values as shown in the given diagram dillups HBrO 3000 BrO 1 82 V BrO 3 4 ad obru ohas oe VEW BUL ai fiduridiliups 1 0652 V Br BrO3 1 5 V HBrO Br2 1 595 V go to tolls disproportionation Then the species undergoing is a BrO3 c Br2 UT 1 noi HBrO b BrO4 e 00 21 bon dieroverdi b BrO4
![The composition What percentage III of a sample of wustite is Fe 0 9301 of iron is present in the form of IIT 199](https://media.kunduz.com/media/sug-question-candidate/20200713130757988766-1648442.jpg?w=256)
Physical Chemistry
GeneralThe composition What percentage III of a sample of wustite is Fe 0 9301 of iron is present in the form of IIT 199
![Number of atoms in 558 5 g Fe at wt 55 85 is AIEEE 2002 a Twice that in 60 g carbon b 6 023x1022 c Half in 8 g He 5022x 1023](https://media.kunduz.com/media/sug-question-candidate/20200711042643448076-1648442.jpg?w=256)
Physical Chemistry
GeneralNumber of atoms in 558 5 g Fe at wt 55 85 is AIEEE 2002 a Twice that in 60 g carbon b 6 023x1022 c Half in 8 g He 5022x 1023
![4 Select the incorrect 1 Extensive properties are additive in nature 2 Intensive properties are mass independent 3 Vapour pressure is an extensive property 4 Pressure is an intensive property](https://media.kunduz.com/media/sug-question-candidate/20200720161932430949-1835984.jpg?w=256)
Physical Chemistry
General4 Select the incorrect 1 Extensive properties are additive in nature 2 Intensive properties are mass independent 3 Vapour pressure is an extensive property 4 Pressure is an intensive property
![4 5 4 Q 3 50 mL of 0 2 M ammonia solution is treated with 25 mL of 0 2 M HCl If pK of ammonia solution 4 75 the pH of the mixture will be JEE MAIN Online 2017 1 8 25 2 4 75 3 9 25 4 3 75](https://media.kunduz.com/media/sug-question-candidate/20200621215013372994-1338864.jpg?w=256)
Physical Chemistry
Equilibrium4 5 4 Q 3 50 mL of 0 2 M ammonia solution is treated with 25 mL of 0 2 M HCl If pK of ammonia solution 4 75 the pH of the mixture will be JEE MAIN Online 2017 1 8 25 2 4 75 3 9 25 4 3 75
![4 The nodal plane in the bond of ethene is located in A the molecular plane B a plane parallel to the molecular plane C a plane perpendicular to the molecular plane which bisects the carbon carbon a bond a D a plane perpendicular to the molecular plane which contains the carbon carbon bon](https://media.kunduz.com/media/sug-question-candidate/20200618170527942170-1513740.jpg?w=256)
Physical Chemistry
Atomic Structure4 The nodal plane in the bond of ethene is located in A the molecular plane B a plane parallel to the molecular plane C a plane perpendicular to the molecular plane which bisects the carbon carbon a bond a D a plane perpendicular to the molecular plane which contains the carbon carbon bon
![The density of 3M solution of sodium thiosulphate Na S O is 1 58 g ml Calculate amount of Na S O in w w i mole fraction of Na S O iii molality of Na and S O2 ions Calculat](https://media.kunduz.com/media/sug-question-candidate/20200606113711087998-1681262.jpg?w=256)
Physical Chemistry
GeneralThe density of 3M solution of sodium thiosulphate Na S O is 1 58 g ml Calculate amount of Na S O in w w i mole fraction of Na S O iii molality of Na and S O2 ions Calculat
![Density of Li atom is 0 53 g cm 3 The edge length of Li is 3 5 Find out the number of Li atoms in an unit cell NA 6 023 x 1023 M 6 94 g mol 1 0153x6023x10 X 1 2 4 66 9 2 8 3 4](https://media.kunduz.com/media/sug-question-candidate/20200630031115707468-1642118.jpg?w=256)
Physical Chemistry
Solid stateDensity of Li atom is 0 53 g cm 3 The edge length of Li is 3 5 Find out the number of Li atoms in an unit cell NA 6 023 x 1023 M 6 94 g mol 1 0153x6023x10 X 1 2 4 66 9 2 8 3 4
![When Zn Cu 1 the electrical potential of Daniell cell is 1 1 V However a When E 1 1 V current flows from Zn to Cu ext b When Ext 1 1 V current flows from Cu to Zn c When E 1 1 V current flows from Zn to Cu ext d When F 1 V Walantrong flow from](https://media.kunduz.com/media/sug-question-candidate/20200608131316906072-1694569.jpg?w=256)
Physical Chemistry
ElectrochemistryWhen Zn Cu 1 the electrical potential of Daniell cell is 1 1 V However a When E 1 1 V current flows from Zn to Cu ext b When Ext 1 1 V current flows from Cu to Zn c When E 1 1 V current flows from Zn to Cu ext d When F 1 V Walantrong flow from
![A certain radio isotope zXA t1 2 10 days decays to given z 2YA 4 If one g atom of zXA is kept in a sealed vessel how much He will accumulate in 20 day at STP Roorkee 1987](https://media.kunduz.com/media/sug-question-candidate/20200713081100974427-1648442.jpg?w=256)
Physical Chemistry
Chemical kineticsA certain radio isotope zXA t1 2 10 days decays to given z 2YA 4 If one g atom of zXA is kept in a sealed vessel how much He will accumulate in 20 day at STP Roorkee 1987
![51 Which of the following is not primary standard a Na CO3 10H 0 b Oxalic acid 10H 0 d NaOH 52 c Na B407 The mole](https://media.kunduz.com/media/sug-question-candidate/20200711023600671990-1648442.jpg?w=256)
Physical Chemistry
General51 Which of the following is not primary standard a Na CO3 10H 0 b Oxalic acid 10H 0 d NaOH 52 c Na B407 The mole
![The number of moles of KMnO reduced by one 4 mole of KI in alkaline medium is SVILD 1 One 2 Two 3 Five 4 One fifth](https://media.kunduz.com/media/sug-question-candidate/20200617133110366435-1835018.jpg?w=256)
Physical Chemistry
EquilibriumThe number of moles of KMnO reduced by one 4 mole of KI in alkaline medium is SVILD 1 One 2 Two 3 Five 4 One fifth
![100 ml of 3 mol H SO reacts with 100 ml of 3 mol NaOH Enthalpy of neutralisation of reaction will be 1 57 1 kJ mol 3 0 3 x 57 1 kJ 2 2 x 57 1 kJ 4 3 57 1 kJ](https://media.kunduz.com/media/sug-question-candidate/20200614070755405956-1793800.jpg?w=256)
Physical Chemistry
General100 ml of 3 mol H SO reacts with 100 ml of 3 mol NaOH Enthalpy of neutralisation of reaction will be 1 57 1 kJ mol 3 0 3 x 57 1 kJ 2 2 x 57 1 kJ 4 3 57 1 kJ
![Which has minimum number of atoms of oxygen Kame X10 ml H 0 e 2 0 1 mol of V 05 s Begr 3 12 gm O g 4 12 04 x 1022 molecules of CO I male 1](https://media.kunduz.com/media/sug-question-candidate/20200716122342604354-1448338.jpg?w=256)
Physical Chemistry
GeneralWhich has minimum number of atoms of oxygen Kame X10 ml H 0 e 2 0 1 mol of V 05 s Begr 3 12 gm O g 4 12 04 x 1022 molecules of CO I male 1
![Which of the following sets of quantum numbers represents 2007 the highest energy of an atom a n 3 1 0 m 0 s 1 2 b n 3 1 1 m 1 s 1 2 c n 3 1 2 m 1 s 1 2 d n 4 1 0 m 0 s 1 2](https://media.kunduz.com/media/sug-question-candidate/20200711180305864829-1614931.jpg?w=256)
Physical Chemistry
Atomic StructureWhich of the following sets of quantum numbers represents 2007 the highest energy of an atom a n 3 1 0 m 0 s 1 2 b n 3 1 1 m 1 s 1 2 c n 3 1 2 m 1 s 1 2 d n 4 1 0 m 0 s 1 2
![16 In aqueous solution the ionization constants for carbonic acid are K 4 2 107 and K 4 8 10 1 Select the correct statement for a saturated 0 034 M solution of the carbonic acid 2 1 The concentration of H is double that of CO 2 The concentration of CO2 is 0 034 M 2 3 The concentration of CO3 is greater than that of HCO3 4 The concentrations of H and HCO3 are approximately equal AIEEE 2010 I will Motions start precipitating](https://media.kunduz.com/media/sug-question-candidate/20200621190939791798-1338864.jpg?w=256)
Physical Chemistry
General16 In aqueous solution the ionization constants for carbonic acid are K 4 2 107 and K 4 8 10 1 Select the correct statement for a saturated 0 034 M solution of the carbonic acid 2 1 The concentration of H is double that of CO 2 The concentration of CO2 is 0 034 M 2 3 The concentration of CO3 is greater than that of HCO3 4 The concentrations of H and HCO3 are approximately equal AIEEE 2010 I will Motions start precipitating
![From the following bond energies H H bond energy 431 37 kJ mol C C bond energy 606 10 kJ mol C C bond energy 336 49 kJ mol C H bond energy 410 50 kJ mol Enthalpy for the reaction H H H H C C H HH C C H H H will be 1 553 0 kJ mol 1 OH H 2 1523 6 kJ mo](https://media.kunduz.com/media/sug-question-candidate/20200707084658618743-1864899.jpg?w=256)
Physical Chemistry
GeneralFrom the following bond energies H H bond energy 431 37 kJ mol C C bond energy 606 10 kJ mol C C bond energy 336 49 kJ mol C H bond energy 410 50 kJ mol Enthalpy for the reaction H H H H C C H HH C C H H H will be 1 553 0 kJ mol 1 OH H 2 1523 6 kJ mo
![For an ideal gas consider only P V work in going from an initial state X to the final state Z The fina state Z can be reached by either of the two paths shown in the figure Which of the following choice s is are correct Take AS as change in entropy and w as work done P atmosphere X Z V litre a ASx z ASX y ASy Z b wx z Wx y Wy Z c WX Y Z Wx Y](https://media.kunduz.com/media/sug-question-candidate/20200716050924778776-1748351.jpg?w=256)
Physical Chemistry
EnergeticsFor an ideal gas consider only P V work in going from an initial state X to the final state Z The fina state Z can be reached by either of the two paths shown in the figure Which of the following choice s is are correct Take AS as change in entropy and w as work done P atmosphere X Z V litre a ASx z ASX y ASy Z b wx z Wx y Wy Z c WX Y Z Wx Y
![72 In a reaction 4 mole of electrons are transferred to one mole of HNO when it acts as an oxidant The possible reduction product is 1 1 2 mole N 2 1 2 mole N O 4 1 mole NH 3 1 mole of NO](https://media.kunduz.com/media/sug-question-candidate/20200609063739033758-1273596.jpg?w=256)
Physical Chemistry
Equilibrium72 In a reaction 4 mole of electrons are transferred to one mole of HNO when it acts as an oxidant The possible reduction product is 1 1 2 mole N 2 1 2 mole N O 4 1 mole NH 3 1 mole of NO
![526 3 mL of 0 5 m HCl is shaken with 0 5 g of activated charcoal and filtered The concentration of the filtrate is reduced to 0 4 m The amount of adsorption x m is](https://media.kunduz.com/media/sug-question-candidate/20200614102112823357-1339674.jpg?w=256)
Physical Chemistry
General526 3 mL of 0 5 m HCl is shaken with 0 5 g of activated charcoal and filtered The concentration of the filtrate is reduced to 0 4 m The amount of adsorption x m is
![C In a reversible reaction K K and AH 40 KCal The product will be obtained in less amount at 1 High pressure high temperature 2 Low pressure low temperature 3 High pressure low temperature 4 Low pressure high temperature](https://media.kunduz.com/media/sug-question-candidate/20200609104244858611-668842.jpg?w=256)
Physical Chemistry
ElectrochemistryC In a reversible reaction K K and AH 40 KCal The product will be obtained in less amount at 1 High pressure high temperature 2 Low pressure low temperature 3 High pressure low temperature 4 Low pressure high temperature
![must 3 Equimolal solutions of KCl and compound X in water shows depressions in freezing point in the ratio of 4 1 Assuming KCl to be completely ionized the compound X in solution 02 11 to w loM 02 H to virstom od statusle a dissociate to the extent of 50 b hydrolyse to the extent of 80 c dimerize to the extent of 50 d trimerize to the extent of 75 llo sd to do MIRI 101](https://media.kunduz.com/media/sug-question-candidate/20200615065624766474-1694569.jpg?w=256)
Physical Chemistry
Solutionsmust 3 Equimolal solutions of KCl and compound X in water shows depressions in freezing point in the ratio of 4 1 Assuming KCl to be completely ionized the compound X in solution 02 11 to w loM 02 H to virstom od statusle a dissociate to the extent of 50 b hydrolyse to the extent of 80 c dimerize to the extent of 50 d trimerize to the extent of 75 llo sd to do MIRI 101
![5 Chloride samples are prepared for analysis by using NaCl KCl and NH4Cl separately or as mixture What minimum volume of 5 by weight AgNO3 solution sp gr 1 04g mL must be added to a sample of 0 3g in order to ensure complete precipitation of chloride in every possible case](https://media.kunduz.com/media/sug-question-candidate/20200710165952352696-1648442.jpg?w=256)
Physical Chemistry
General5 Chloride samples are prepared for analysis by using NaCl KCl and NH4Cl separately or as mixture What minimum volume of 5 by weight AgNO3 solution sp gr 1 04g mL must be added to a sample of 0 3g in order to ensure complete precipitation of chloride in every possible case
![22 Coagulating power of NaCl and AlCl is 51 and 0 093 respectively AlCl coagulates x times faster than NaCl The value of x is a 530 b 565 1 of c 548 isted d 570 E minde har Id](https://media.kunduz.com/media/sug-question-candidate/20200606134953482557-1694569.jpg?w=256)
Physical Chemistry
Surface chemistry22 Coagulating power of NaCl and AlCl is 51 and 0 093 respectively AlCl coagulates x times faster than NaCl The value of x is a 530 b 565 1 of c 548 isted d 570 E minde har Id
![c 90 a 0470 0 10 g of a sample containing CuCO and some inert impurity was dissolved in dilute sulphuric acid and volume made up to 50 mL This solution was added into 50 mL of 0 04 M KI solution where copper precipitates as Cul and I is oxidized into I3 A 10 mL portion of this solution is taken for analysis filtered and made up free I3 and then treated with excess of acidic permanganate solution Liberated iodine required 20 mL of 2 5 mM sodium thiosulphate solution to reach the end point Determine mass percentage of CuCO3 in the original sample a 7 41 c 61 75 b 74 1 d None of these](https://media.kunduz.com/media/sug-question-candidate/20200715095735080150-693813.jpg?w=256)
Physical Chemistry
Generalc 90 a 0470 0 10 g of a sample containing CuCO and some inert impurity was dissolved in dilute sulphuric acid and volume made up to 50 mL This solution was added into 50 mL of 0 04 M KI solution where copper precipitates as Cul and I is oxidized into I3 A 10 mL portion of this solution is taken for analysis filtered and made up free I3 and then treated with excess of acidic permanganate solution Liberated iodine required 20 mL of 2 5 mM sodium thiosulphate solution to reach the end point Determine mass percentage of CuCO3 in the original sample a 7 41 c 61 75 b 74 1 d None of these
![38 What volume of 0 20 M H SO4 is required to produce 34 0g of H S by the reaction 8KI 5H SO4 4K2SO4 412 H S 4H O](https://media.kunduz.com/media/sug-question-candidate/20200711032655912554-1648442.jpg?w=256)
Physical Chemistry
General38 What volume of 0 20 M H SO4 is required to produce 34 0g of H S by the reaction 8KI 5H SO4 4K2SO4 412 H S 4H O
![The ratio of number of moles of KMnO4 and K Cr O required to oxidise 0 1 mol Sn to Sn 4 in acidic medium 1 6 5 3 1 2 2 5 6 4 2 1](https://media.kunduz.com/media/sug-question-candidate/20200711153928967709-1878792.jpg?w=256)
Physical Chemistry
ElectrochemistryThe ratio of number of moles of KMnO4 and K Cr O required to oxidise 0 1 mol Sn to Sn 4 in acidic medium 1 6 5 3 1 2 2 5 6 4 2 1
![1 HNO acts as an oxidant with which one of the following reagent 1 KMnO 2 H S 3 K Cr O 4 Br](https://media.kunduz.com/media/sug-question-candidate/20200609062817237117-1273596.jpg?w=256)
Physical Chemistry
General1 HNO acts as an oxidant with which one of the following reagent 1 KMnO 2 H S 3 K Cr O 4 Br
![5 ASF molecule is trigonal bipyramidal The orbitals of As atom involved in hybridisation are a d d S PxPy b dxy S Px Pp Pz c S Px Py Pz dz d2 2 S Px Py Pr d](https://media.kunduz.com/media/sug-question-candidate/20200715103155949035-1748351.jpg?w=256)
Physical Chemistry
Atomic Structure5 ASF molecule is trigonal bipyramidal The orbitals of As atom involved in hybridisation are a d d S PxPy b dxy S Px Pp Pz c S Px Py Pz dz d2 2 S Px Py Pr d
![The percentage of sodium in a breakfast cereal labelled as 110 mg of sodium per 100 g of cereal is a 11 b 01 10 d 110 c 0 110](https://media.kunduz.com/media/sug-question-candidate/20200710151516071649-1648442.jpg?w=256)
Physical Chemistry
GeneralThe percentage of sodium in a breakfast cereal labelled as 110 mg of sodium per 100 g of cereal is a 11 b 01 10 d 110 c 0 110
![3 36 The coagulation values of AICI and NaCl are 0 093 and 52 respectively Then coagulating power of AICI as compared to that of NaCl is a 52 x 0 093 times b 52 0 093 times c 0 093 52 times d None of these](https://media.kunduz.com/media/sug-question-candidate/20200606140417018762-1694569.jpg?w=256)
Physical Chemistry
Surface chemistry3 36 The coagulation values of AICI and NaCl are 0 093 and 52 respectively Then coagulating power of AICI as compared to that of NaCl is a 52 x 0 093 times b 52 0 093 times c 0 093 52 times d None of these
![112 The reaction N O4 g 2NO2 g is started with 0 8 moles of N O4 in a one litre vessel What is the equilibrium concentration of NO if equilibrium constant is 0 00466 at 298 K a 0 06 M c 0 74 M b 0 03 M d 0 36 M](https://media.kunduz.com/media/sug-question-candidate/20200703165921182114-1871240.jpg?w=256)
Physical Chemistry
Equilibrium112 The reaction N O4 g 2NO2 g is started with 0 8 moles of N O4 in a one litre vessel What is the equilibrium concentration of NO if equilibrium constant is 0 00466 at 298 K a 0 06 M c 0 74 M b 0 03 M d 0 36 M
![2 40 At what pH does an indicator change colour if the indicator is a weak acid with K 4x 10 F which one s of the following neutralizations would the indicator be useful Explain ind a NaOH CH COOH b HCI NH c HCl NaOH What indicator should be used for the titration of 10MKH BO with 1MUCH 0 41](https://media.kunduz.com/media/sug-question-candidate/20200623082310185463-1338864.jpg?w=256)
Physical Chemistry
General2 40 At what pH does an indicator change colour if the indicator is a weak acid with K 4x 10 F which one s of the following neutralizations would the indicator be useful Explain ind a NaOH CH COOH b HCI NH c HCl NaOH What indicator should be used for the titration of 10MKH BO with 1MUCH 0 41
![d None of these A sol is prepared by addition of excess of AgNO3 solution in KI solution The charge likely to develop on colloidal particles is ugh b negative d both charges numbers of protective colloids A B C and D are 0 04 0 004 10 and 40 respectively a positive c no charge](https://media.kunduz.com/media/sug-question-candidate/20200713162041033534-841847.jpg?w=256)
Physical Chemistry
Solutionsd None of these A sol is prepared by addition of excess of AgNO3 solution in KI solution The charge likely to develop on colloidal particles is ugh b negative d both charges numbers of protective colloids A B C and D are 0 04 0 004 10 and 40 respectively a positive c no charge
![6 The potential energy of the electron present in the ground state of Li2tion is represented by 38 a b TEO c 4TE OT d 3e 4TE OF 3e 4TE OF](https://media.kunduz.com/media/sug-question-candidate/20200711084429012543-1648442.jpg?w=256)
Physical Chemistry
Atomic Structure6 The potential energy of the electron present in the ground state of Li2tion is represented by 38 a b TEO c 4TE OT d 3e 4TE OF 3e 4TE OF
![n factor of HCI in the reaction KMnO HCI KCI MnCl Cl H O 4 1 1 2 6 3 5 8 4 00 L](https://media.kunduz.com/media/sug-question-candidate/20200716171724691832-1624942.jpg?w=256)
Physical Chemistry
Generaln factor of HCI in the reaction KMnO HCI KCI MnCl Cl H O 4 1 1 2 6 3 5 8 4 00 L
![A cylinder fitted with a piston contains 0 10 moles of air at room temperature 20 C The piston is pushed so slowly that the air within the cylinder remain essentially in thermal equilibrium with the surroundings The work done by the air within the O cylinder if the final volume is one half the initial volume](https://media.kunduz.com/media/sug-question-candidate/20200618100243349651-693813.jpg?w=256)
Physical Chemistry
EnergeticsA cylinder fitted with a piston contains 0 10 moles of air at room temperature 20 C The piston is pushed so slowly that the air within the cylinder remain essentially in thermal equilibrium with the surroundings The work done by the air within the O cylinder if the final volume is one half the initial volume
![Polychlorinated biphenyls PCBs known to be dangerous environmental pollutants are a group of compounds with the general empirical formula C HC10 m where m is an integer What is the value of m and hence the empirical formula of the PCB that contains 58 9 chlorine by mass](https://media.kunduz.com/media/sug-question-candidate/20200618144053428797-1839106.jpg?w=256)
Physical Chemistry
GeneralPolychlorinated biphenyls PCBs known to be dangerous environmental pollutants are a group of compounds with the general empirical formula C HC10 m where m is an integer What is the value of m and hence the empirical formula of the PCB that contains 58 9 chlorine by mass