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IIT JAM Chemistry - MCQ Test 3 - Chemistry MCQ


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IIT JAM Chemistry - MCQ Test 3 for Chemistry 2024 is part of Mock Test Series for IIT JAM Chemistry preparation. The IIT JAM Chemistry - MCQ Test 3 questions and answers have been prepared according to the Chemistry exam syllabus.The IIT JAM Chemistry - MCQ Test 3 MCQs are made for Chemistry 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for IIT JAM Chemistry - MCQ Test 3 below.
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IIT JAM Chemistry - MCQ Test 3 - Question 1

Which of the following molecules will have the highest zero point vibrational energy:

Detailed Solution for IIT JAM Chemistry - MCQ Test 3 - Question 1

Less the reduced mass, high the zero point vibrational energy. B has least reduced mass.

IIT JAM Chemistry - MCQ Test 3 - Question 2

Which one of the normal modes of ethylene is active in the infrared:

IIT JAM Chemistry - MCQ Test 3 - Question 3

The moment of inertia for HCl gas can be determined from its microwave spectrum, which property of the HCl molecule may be obtained from the moment of inertia:

IIT JAM Chemistry - MCQ Test 3 - Question 4

Overtones are observed in the vibrational spectra of diatomic molecules when:

IIT JAM Chemistry - MCQ Test 3 - Question 5

The correct order of the fundamental vibrational frequency of the following diatomic molecules is:

IIT JAM Chemistry - MCQ Test 3 - Question 6

The reaction of the bromo compound shown below with sodium ethoxide gives predominantly

IIT JAM Chemistry - MCQ Test 3 - Question 7

The reaction of l-bromo-2-fluorobenzene with furan in the presence of one equivalent to Mg gives:

IIT JAM Chemistry - MCQ Test 3 - Question 8

Correct absolute configuration is

IIT JAM Chemistry - MCQ Test 3 - Question 9

The microwave spectrum of a molecule yields three rotational constants. The molecule is:

IIT JAM Chemistry - MCQ Test 3 - Question 10

Electronegativity and Electron affinity of an element A are X and Y resp. Hence Ionisation potential is

IIT JAM Chemistry - MCQ Test 3 - Question 11

Which of the following is the most stable conformer of the following molecule:

Detailed Solution for IIT JAM Chemistry - MCQ Test 3 - Question 11

Correct Answer :- B

Explanation : When the methyl group in the structure above occupies an axial position it suffers steric crowding by the two axial hydrogens located on the same side of the ring. The conformation in which the methyl group is equatorial is more stable, and thus the equilibrium lies in this direction.

Therefore,the equatorial bonds are the most stable in chair form.

IIT JAM Chemistry - MCQ Test 3 - Question 12

The increasing order of basicity among the following is :

IIT JAM Chemistry - MCQ Test 3 - Question 13

The major product P is: 

IIT JAM Chemistry - MCQ Test 3 - Question 14

The major product expected from the following reaction is?  

IIT JAM Chemistry - MCQ Test 3 - Question 15

The population (N) distribution over states (n) of a diatomic molecular corresponds to:

IIT JAM Chemistry - MCQ Test 3 - Question 16

Arrange the following in increasing order of Ka value:

IIT JAM Chemistry - MCQ Test 3 - Question 17

Correct energy profile for amine inversion and hybridization of nitrogen in transition state is:

IIT JAM Chemistry - MCQ Test 3 - Question 18

Resonance frequencies for EPR and NMR are respectively in the spectral region:

IIT JAM Chemistry - MCQ Test 3 - Question 19

Compound A and B exist in

IIT JAM Chemistry - MCQ Test 3 - Question 20

Consider the cell Cd(s)/Cd+2(1.0M)// C+2(1.0M)/Cu(s). if we wanted to make a cell with a more positive voltage using the same substances, we should:

Detailed Solution for IIT JAM Chemistry - MCQ Test 3 - Question 20

Cd(s) + Cu2+(1.0M) →Cd2+ (1.0M) + Cu(s)
Ecell = Ec- cell - 0.0592log.[Cd2+]/[Cu2+]
Ecell increases when conditions as in (d) made.

IIT JAM Chemistry - MCQ Test 3 - Question 21

The major product P is:

IIT JAM Chemistry - MCQ Test 3 - Question 22

EMF of the following cell is 0.67 V at 298 K. Pt|H2(latm) |H+(pH = X) || KCl (IN) | Hg2Cl2(s) | Hg Calculate the pH of anode compartment. Given 

IIT JAM Chemistry - MCQ Test 3 - Question 23

Rate of formation of SOin the following reaction

is 100g min-1. Hence, rate of disappearance of O2 is:

IIT JAM Chemistry - MCQ Test 3 - Question 24

In the following sequence of pericyclic reactions X and Y are

Detailed Solution for IIT JAM Chemistry - MCQ Test 3 - Question 24

IIT JAM Chemistry - MCQ Test 3 - Question 25

Specifi heat of N2 at constant pressure is 0.25 cal/g°C. Hence specific heat at constant volume is

IIT JAM Chemistry - MCQ Test 3 - Question 26

Bridge-head hydrogen of the conform of cis-decalin is positioned as:

IIT JAM Chemistry - MCQ Test 3 - Question 27

The resonance energy of anthracene (from the below data)

IIT JAM Chemistry - MCQ Test 3 - Question 28

Given    which of the following statement is incorrect:

IIT JAM Chemistry - MCQ Test 3 - Question 29

Weight of 14C have radioactivity 1 Curie (Disintegration constant is 4.4 × 10–12 sec-1 is ‘(in Kg)

IIT JAM Chemistry - MCQ Test 3 - Question 30

In the reaction, P + Q → R + S the time taken for 75% reaction of P is twice the time taken for 50% reaction of P. The concentration of Q varies with reaction time as shown in the figure. The overall order of the reaction is:

*Multiple options can be correct
IIT JAM Chemistry - MCQ Test 3 - Question 31

Consider the following reaction involving two acids shown below: formic acid and HF.

Which of the following statements about this reaction is/are true?

*Multiple options can be correct
IIT JAM Chemistry - MCQ Test 3 - Question 32

Which statement is correct in respect of the below reaction:

*Multiple options can be correct
IIT JAM Chemistry - MCQ Test 3 - Question 33

Which of the following statement is/are correct:

(I) The conductance of one cm3 (or 1 unit3) of a solution is called specific conductance

(II) Specific conductance increases while molar conductively decreases on progressive dilution

(III) The limiting equivalent conductivity of weak electrolyte cannot be determine exactly by extrapolation of the plot of ∧eq against 

(IV) The conductance of metals is due to the movement of free electrons

*Multiple options can be correct
IIT JAM Chemistry - MCQ Test 3 - Question 34

In electrolyte concentration cell:

(I) The electrode material and the solution in both half –cells are composed of the same substances

(II) Only the concentrations of solutions of the same substances is different

(III) E0cell = 0

(IV) The Nernst equation reduces to 

Which of the following statement is correct:

*Multiple options can be correct
IIT JAM Chemistry - MCQ Test 3 - Question 35

Dimer formation can take place in

*Multiple options can be correct
IIT JAM Chemistry - MCQ Test 3 - Question 36

Which of the following complex species is expected to show optical isomerism- 

*Multiple options can be correct
IIT JAM Chemistry - MCQ Test 3 - Question 37

Boric acid is dissolved in D2O. Hence, which of the following is/are true           

*Multiple options can be correct
IIT JAM Chemistry - MCQ Test 3 - Question 38

Mg and Zn do not resemble in following properties           

*Multiple options can be correct
IIT JAM Chemistry - MCQ Test 3 - Question 39

Which of the following compound is/ are chiral:

*Multiple options can be correct
IIT JAM Chemistry - MCQ Test 3 - Question 40

Which among the following is/are acid:           

*Answer can only contain numeric values
IIT JAM Chemistry - MCQ Test 3 - Question 41

If  is 1.69 V &   is 1.40 V, then  will be(in Volt):


*Answer can only contain numeric values
IIT JAM Chemistry - MCQ Test 3 - Question 42

Consider the following nuclear reactions:

The number of neutrons in the element L is:


*Answer can only contain numeric values
IIT JAM Chemistry - MCQ Test 3 - Question 43

The two fine-structure components of a nuclear magnetic resonance transition are observed  at chemical shifts of 2.142 and 2.208 ppm in a 300 MHz NMR spectrometer. Calculate the coupling constant (in Hz):


*Answer can only contain numeric values
IIT JAM Chemistry - MCQ Test 3 - Question 44

What is the oxidation state of ‘W’ in (Me3CO)3W(CCMe3) ?


*Answer can only contain numeric values
IIT JAM Chemistry - MCQ Test 3 - Question 45

B2H6 is added with excess of RCl. Number of the possible products among following:

B2H1R5 ,B2H2R4, B2H3R3 , B2H5R1, B2R6, B2H4R2 


*Answer can only contain numeric values
IIT JAM Chemistry - MCQ Test 3 - Question 46

Number of molecules among the following, having pЛ-dЛ bonding is/are

P4O10, N2O5, (SiH3)3N, SO3.


*Answer can only contain numeric values
IIT JAM Chemistry - MCQ Test 3 - Question 47

How many P-O-P bond are there in H27P25O76  andH25P25O75 resp:


*Answer can only contain numeric values
IIT JAM Chemistry - MCQ Test 3 - Question 48

Half life of 53I125 is 60 days. What percentage of radioactivity would be present after 180 days ?


*Answer can only contain numeric values
IIT JAM Chemistry - MCQ Test 3 - Question 49

What would be the atomic weight of isotope of Hydrogen which contains 2 neutrons in nucleus.


*Answer can only contain numeric values
IIT JAM Chemistry - MCQ Test 3 - Question 50

For the fuel cell reaction 

What is ΔS0298 (kJ/K) for the given fuel cell reaction?


*Answer can only contain numeric values
IIT JAM Chemistry - MCQ Test 3 - Question 51

Rotational property of a body is characterized by its moment of inertia. Consider ABCD is square box of side 4m. Find moment of inertia (in Kg/m2) along Z-axis:


*Answer can only contain numeric values
IIT JAM Chemistry - MCQ Test 3 - Question 52

Ionisation energy of He+  is 19.6 × 10–18 Jatom-1.The energy of first stationary state of Li+2 is…(in J atom-1 , in the multiple of 10–17):


*Answer can only contain numeric values
IIT JAM Chemistry - MCQ Test 3 - Question 53

At 570 C gaseous dinitrogentetraoxide is 50% dissociated. Calculate standard free energy change (J/mol) of it at this temp and 1atm initial pressure of gas:


*Answer can only contain numeric values
IIT JAM Chemistry - MCQ Test 3 - Question 54

Equal volume of two monoatomic gases A and B are mixed at same temp. and pressure.  The ratio of specific heats Cp:Cvof mixture will be …?


*Answer can only contain numeric values
IIT JAM Chemistry - MCQ Test 3 - Question 55

For the reaction X2O4(l) giving 2XO2(g) , ∆U = 2.1 kcal, ∆S= 20 cal/K at 300K. Calculate ∆G(in kcal):


*Answer can only contain numeric values
IIT JAM Chemistry - MCQ Test 3 - Question 56

A sample of rock from moon contains equal number of atoms of Uranium and Lead (t1/2 for
U = 4.5× 109 years. What is age (years) of rock (in the multiple of 109)?


*Answer can only contain numeric values
IIT JAM Chemistry - MCQ Test 3 - Question 57

Consider the following reaction,

The reaction is first order in each direction, with an equilibrium constant of 104. For the conversion of chair form to boat form e–Ea/RT = 4.35 × 10–8 at 298 K with pre-exponential factor of 1012 s–1, Apparent rate constant (=kA + kB) at 298 K is(S–1, in the multiple of 108):


*Answer can only contain numeric values
IIT JAM Chemistry - MCQ Test 3 - Question 58

Following is the graph between (a – x)–1 and time t for a second order reaction,

Hence, rate at the start of the reaction is (in mol L–1 min–1 ).


*Answer can only contain numeric values
IIT JAM Chemistry - MCQ Test 3 - Question 59

The number of neutrons emitted when 92U235 undergoes controlled nuclear fission to 54Xe142 and 38Sr90.


*Answer can only contain numeric values
IIT JAM Chemistry - MCQ Test 3 - Question 60

The J = 0 to J = 1 rotational transition for 1H79Br occurs at 500.72 GHz. Assuming the molecule to be a rigid rotor, the J = 3 to J = 4 transition occurs at …….(in cm–1)


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