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Major Physical Chemistry - Chemistry MCQ


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60 Questions MCQ Test Mock Test Series for IIT JAM Chemistry - Major Physical Chemistry

Major Physical Chemistry for Chemistry 2024 is part of Mock Test Series for IIT JAM Chemistry preparation. The Major Physical Chemistry questions and answers have been prepared according to the Chemistry exam syllabus.The Major Physical Chemistry MCQs are made for Chemistry 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Major Physical Chemistry below.
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Major Physical Chemistry - Question 1

For which of the following process, dq = dU?

Major Physical Chemistry - Question 2

Given that (at T = 298 K)
Cu(s) | Cu2+ (1.0 M) || Ag+ (1.0 M) | Ag(s)     E°cell = 0.46 V
Zn(s) | Zn2+ (1.0 M) || Cu2+ (1.0 M) | Cu(s)     E°cell = 1.10 V
Then, Ecell for 
Zn | Zn2+ (1.0 M) || Ag+ (1.0 M) | Ag at 298 K will be
 

Major Physical Chemistry - Question 3

The following adsorption isotherm for a gas at adsorption surface. The correct order of temperature
           

Major Physical Chemistry - Question 4

Which of the following decay with the change in spin multiplicity is known as ISC (Inter System Crossing)?

Major Physical Chemistry - Question 5

92U238 emits 8α and 6β- particles. The n/p ration in daughter nucleus will be?          

Major Physical Chemistry - Question 6

For a cell reaction, consider the following equations:
A + B ⇌ C + D 
2A + 2B ⇌ 2C + 2D 

Major Physical Chemistry - Question 7

A complex containing K+, Pt(IV) and Cl- is 100% ionized giving i = 3. Thus, complex is?

Major Physical Chemistry - Question 8

The angle between the planes (100) and (110) is:

Major Physical Chemistry - Question 9

Adding heat to a solid and liquid in equilibrium will cause the:           

Major Physical Chemistry - Question 10

Calculate the lattice energy of KCl at 298 K. Given that:           
Sublimation energy of K(s) = 89 kJ mol–1           
Ionization energy of K(g) = 418 kJ mol–1           
Dissociation energy of Cl2(g) = 244 kJ mol–1           
Electro attachment energy of Cl(g) = –349 kJ mol–1           
Formation of KCl(s) = – 437           

Major Physical Chemistry - Question 11

In H-atom, electrons make transition from 5th excited state to ground state producing all possible type of photons. Calculate the number the lines in infrared region.          

Major Physical Chemistry - Question 12

The standard emf of the cell, Cd(s) | CdCl2(aq) (0.1 M) || AgCl(s) | Ag(s) in which the cell reaction, is,  is 0.6915 V at 0°C and 0.6753 V at 25°C. The DH° of the reaction at 25°C is:

Major Physical Chemistry - Question 13

For a equilibrium H2O(s) → H2O(l)  which of the following statements is true:           

Major Physical Chemistry - Question 14

At low pressure if RT = 2(aP)1/2, then, the volume occupied by a real gas is?

Major Physical Chemistry - Question 15

The C-H stretching frequency of an alkane is 2900 cm-1. Calculate the value of C-D frequency (cm-1):

Major Physical Chemistry - Question 16

Given

(i) Zn + 4NH3 → Zn(NH3)42+ + 2e,   E° = 1.03 V
(ii) Zn → Zn2+ + 2e,              E° = 0.763 V
The formation constant of the complex Zn(NH3)42+ is approximately

Major Physical Chemistry - Question 17

On the basis of data given below predict which of the following gases shows least adsorption on a definite amount of charcoal?

Major Physical Chemistry - Question 18

The calomel electrode and quinhydrone electrode are reversible with respect to which ion  respectively:

Major Physical Chemistry - Question 19

At 30°C the solubility of Ag2CO3 (Ksp = 8 × 10–12) would be greatest in one litre of:

Major Physical Chemistry - Question 20

For an enzyme catalyzed reaction, the reaction rate is half of its maximum value when

Major Physical Chemistry - Question 21

The rate constant, the activation energy and Arrhenius parameter of a chemical reaction at 25oC are 3×10-4 s-1, 104.4 kJ/mol and 6.0×1014 s-1 resp.. Calculate the value of rate constant as time →Infinity is?

Major Physical Chemistry - Question 22

The degree of dissociation of SO3 is α at equilibrium pressure P0.
Kp for 2SO3(g) → 2SO2(g) + O2(g) is 

Major Physical Chemistry - Question 23

Aluminum metal has a density of 2.72g/cm3 and crystallizes in lattice with an edge length of 404 pm. Which of the following alternative are correct:           

Major Physical Chemistry - Question 24

The conductivity of a saturated solution of BaSO4 is 3.06 × 10–6 ohm–1 cm–1 and its equivalent conductance is 1.53 ohm–1 cm2 equiv–1. The Ksp for BaSO4 will be:

Major Physical Chemistry - Question 25

In the following reaction started only with Ag,
2A8(g) → 2A3(g) + 3A2(g) +A4(g)
mole fraction of A2 is found to 0.36 at a total pressure of 100 atm at equilibrium. The mole fraction of A8(g) at equilibrium is:

Major Physical Chemistry - Question 26

t1/2 (half-life period) of 1st order reaction is 10 min. Starting with 10 mol L–1, rate after 20 min is:

Major Physical Chemistry - Question 27

The phase diagram of CO2 and Bi differ in the sense that:           

Major Physical Chemistry - Question 28

When pure water is saturated with CaCO3 and CaC2O4, the concentration of calcium ion in the solution under equilibrium is 8 × 10–5 M. If the ratio of the solubility product of CaCO3 to that of CaC2O4 is 3, what is the solubility product of CaCO3 in pure water?

Major Physical Chemistry - Question 29

1g charcoal show chemical adsorption of some acetic acid on coming in contact with 100 mL of 0.50 M acetic acid and the molarity of acetic acid is reduced to 0.49 M. If surface area of charcoal is 3.015 × 102 m2/g, the surface area of each chemical adsorbed molecule of acetic acid is:

Major Physical Chemistry - Question 30

Emf of Cd-cell is 1.018 V at 25°C. The temperature coefficient of cell is –5.2 × 10–5 VK–1. How cell temperature will change during operation?

*Multiple options can be correct
Major Physical Chemistry - Question 31

The radial distribution functions [P(r)] is used to determine the most probable radius, which is used to find the electron in a given orbital  for 1s-orbtial of hydrogen like atom having atomic number Z, is  Then which of the following statements is/are correct

*Multiple options can be correct
Major Physical Chemistry - Question 32

Which one of the following statements is correct?           

*Multiple options can be correct
Major Physical Chemistry - Question 33

KCl can be used in salt bridge as electrolyte in which of the following cells:

*Multiple options can be correct
Major Physical Chemistry - Question 34

A 0.1 M sodium acetate solution was prepared. The Kh = 5.6 × 10–10

*Multiple options can be correct
Major Physical Chemistry - Question 35

Select the correct statements:           

*Multiple options can be correct
Major Physical Chemistry - Question 36

Radioactive decay is not affected by           

*Multiple options can be correct
Major Physical Chemistry - Question 37

The enthalpies of two reaction are ∆H1 and ∆H2 (both positive) with ∆H2 > ∆H1. If the temperature of reacting system is increased from T1 to T2, predict which of the following alternatives is incorrect?

*Multiple options can be correct
Major Physical Chemistry - Question 38

The figure shows the p-V plot of an ideal gas taken through a cycle ABCDA. The part ABC is a semi-circle and CDA is half of an ellipse. Then,          
 

*Multiple options can be correct
Major Physical Chemistry - Question 39

2CaSO4(s) → 2CaO(s) 2SO2(g) +O2(g)  ΔH > 0

Above equilibrium is established by taking some amount of CaSO4(s) in a closed container at 1600 K. Then which of the following may be correct option.

*Multiple options can be correct
Major Physical Chemistry - Question 40

The pH of solution in a cell: Reference electrode || H3O+(?)  H2| Pt can be determined by using the formula   However, the use of hydrogen electrode to determine pH is usually ignored. While are the correct facts about this observation?

*Answer can only contain numeric values
Major Physical Chemistry - Question 41

A plant virus is found to consist of uniform cylindrical particles of 150 angstrom in diameter and 5000 angstrom long. The specific volume of the virus is 0.75 cm3/g. If the virus is considered to be a single particle, find its molar mass (in g/mol, rounded up to three decimal places, in the multiple of 107):


*Answer can only contain numeric values
Major Physical Chemistry - Question 42

Wavelength of high energy transition of H-atom is 91.2 nm. Calculate the corresponding wavelength of He+ ion: (in nm, rounded up to one decimal place)


*Answer can only contain numeric values
Major Physical Chemistry - Question 43

Find the pH of solution forming standard hydrogen electrode:


Detailed Solution for Major Physical Chemistry - Question 43

PH of SHE 0 because conc of H is standard unit i.e 1 thus PH is to be 0

*Answer can only contain numeric values
Major Physical Chemistry - Question 44

For a given gas Critical temperature (Tc) was found to be 40 K. Hence, Ti would be?


*Answer can only contain numeric values
Major Physical Chemistry - Question 45

A millimolar solution of acetic acid demerises to the extent of 60% in benzene at 27°C. Calculate the osmotic pressure (atm) of acetic acid in benzene [rounded up to two decimal places, in the multiple of 10-3]


*Answer can only contain numeric values
Major Physical Chemistry - Question 46

The edge length of a face centred cubic cell of an ionic substance is 508 pm. If the radius of cation is 110 pm, calculate the radius of anion (pm)?


*Answer can only contain numeric values
Major Physical Chemistry - Question 47

When limestone is heated CaO is formed, as  →  For this reaction equilibrium constant (KP) follow the relation.

Calculate the temperature ‘T’ (in K, rounded up to first decimal place) at which reaction comes to completion?


*Answer can only contain numeric values
Major Physical Chemistry - Question 48

What is [H+] in a solution obtained when 0.1 M ammonia is just neutralized by a strong HCl?Given: (Kb = 1.8 × 10–5) [In the multiple of 10-6, up to two decimal places]:


*Answer can only contain numeric values
Major Physical Chemistry - Question 49

How many vibrational modes are there in the nonlinear C60 molecule?


*Answer can only contain numeric values
Major Physical Chemistry - Question 50

 What would be the n-factor of Fe?


*Answer can only contain numeric values
Major Physical Chemistry - Question 51

The ionic strength of a solution containing 0.008 M AlCl3 and 0.005 M KCl is:
(rounded up to two decimal places)


*Answer can only contain numeric values
Major Physical Chemistry - Question 52

The spacing between rotational line of HF is 40 cm–1. Spacing between rotational lines of DF would be ______________? (rounded up to first decimal place)


*Answer can only contain numeric values
Major Physical Chemistry - Question 53

For a reaction:    ⇌  Find DH in KJ mol–1?


*Answer can only contain numeric values
Major Physical Chemistry - Question 54

What volume (in ml, rounded up to first decimal place) of 0.10 M sodium formate solution should be added to 50 ml of 0.05 M formic acid to produce a buffer solution of pH 4. [pKa for formic acid is 3.7]


*Answer can only contain numeric values
Major Physical Chemistry - Question 55

By X-ray diffraction methods, the unit length of NaCl is observed to be 0.5627 nm. The density of NaCl is found to be 2.164 g cm–3. The percentage of Na+ and Cl ions missing is ____________%:   (rounded  up to 2 decimal place)


*Answer can only contain numeric values
Major Physical Chemistry - Question 56

The chemisorption of H2 on an activated surface becomes 40% faster if temperature is raised from 500 K to 1000 K. Calculate the activation energy of chemisorptions (in KJ/mol). (rounded up to first decimal place)


*Answer can only contain numeric values
Major Physical Chemistry - Question 57

Calculate how long (in seconds, in the multiple of 1012, rounded up to first decimal place) a hydrogen atom will remain on the surface of a solid at 298 K if its desorption activation energy is 150 kJ mol–1 Assume that


*Answer can only contain numeric values
Major Physical Chemistry - Question 58

If energy of a state in 2D-box is 17h2/8ml2, degeneracy would be?


*Answer can only contain numeric values
Major Physical Chemistry - Question 59

Not considering the electronic spin, the degeneracy of the second excited state (n = 3) of H atom is 9, while the degeneracy of the second excited state of H is:


*Answer can only contain numeric values
Major Physical Chemistry - Question 60

Equilibrium population of a doubly degenerate level lying at energy 2 unit above than the lowest energy level (assume KBT = 1) obtained in microwave region will be____? (up to two decimal place)


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