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IIT JAM Chemistry - MCQ Test 4 - Chemistry MCQ


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IIT JAM Chemistry - MCQ Test 4 for Chemistry 2024 is part of Mock Test Series for IIT JAM Chemistry preparation. The IIT JAM Chemistry - MCQ Test 4 questions and answers have been prepared according to the Chemistry exam syllabus.The IIT JAM Chemistry - MCQ Test 4 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 4 below.
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IIT JAM Chemistry - MCQ Test 4 - Question 1

Relative lowering of vapor pressure produced by dissolving 71.5g of a substance in 1Kg of water  is 0.0073. Molecular weight of substance will be

IIT JAM Chemistry - MCQ Test 4 - Question 2

Which solution will show maximum vapor pressure at 300K

IIT JAM Chemistry - MCQ Test 4 - Question 3

The relationship been Osmotic pressure at 273K when 10g Glucose (P1), 10g Urea (P2), 10g Sucrose (P3) are dissolved in 250 Ml of water

IIT JAM Chemistry - MCQ Test 4 - Question 4

Solution A contains 7g/L of MgCl2 and Solution B contains 7g/L of NaCl. At room temp, Osmotic pressure of

IIT JAM Chemistry - MCQ Test 4 - Question 5

When a substance is dissolved in solvent, its vapor pressure is decreased. It brings

Detailed Solution for IIT JAM Chemistry - MCQ Test 4 - Question 5

When a solute dissolves in water, the vapour pressure of solvent decreases and because of this boiling point increases and freezing point decreases.

IIT JAM Chemistry - MCQ Test 4 - Question 6

At a given temperature, total vapor pressure in Torr of a mixture of volatile components A and B is given by

p = 120 – 75XB

Hence, vapor pressure of pure A and B respectively (in Torr) are:

IIT JAM Chemistry - MCQ Test 4 - Question 7

The equilibrium constant is 6.0 × 10–4 for the N2O2→ 2NO reaction. If the concentration of nitrogen is 0.10 mol/L and concentration of oxygen is 0.20 mol/L at equilibrium. Then the concentration of nitric oxide at equilibrium is:

IIT JAM Chemistry - MCQ Test 4 - Question 8

Some solid NH4HS is placed in a flask containing 0.5 atm of NH3, what would be pressure of NH3 and H2S when equilibrium is reached:

            NH4HS(g)→ NH3(g) + H2S(g),  KP = 0.11

IIT JAM Chemistry - MCQ Test 4 - Question 9

Ratio of sigma and pi bonds is maximum in           

IIT JAM Chemistry - MCQ Test 4 - Question 10

For the following three reactions (I), (II) and (III) equilibrium constants are given

   (I) CO(g) + H2O(g)→ CO2(g) + H2(g); K1                  
   (II) CH4(g) + H2O(g)→ CO(g) + 3H2(g); K2
  (III) CH4(g) + 2H2O(g)→ CO2(g) + 4H2(g); K3

Which of the following relations is correct:           

IIT JAM Chemistry - MCQ Test 4 - Question 11

XY2 dissociates as XY2→ XY(g) + Y(g) when the initial pressure of XY2 is 600 mmHg, the total equilibrium pressure is 800mm Hg. Calculate K for the reaction assuming that the volume of the system remain unchanged:

IIT JAM Chemistry - MCQ Test 4 - Question 12

A 50 mL sample of 0.01M Ba(OH)2 is titrated with 0.01 M HCl. The solution at equivalent point is

IIT JAM Chemistry - MCQ Test 4 - Question 13

Which of the following fluorides is angular:

IIT JAM Chemistry - MCQ Test 4 - Question 14

Based on the following information,

                      

Which of the following chemical species is the strongest reducing agent?

IIT JAM Chemistry - MCQ Test 4 - Question 15

Which molecule has zero bond order:                                                                                 

IIT JAM Chemistry - MCQ Test 4 - Question 16

Which of the following processes involves increasing in bond order:

IIT JAM Chemistry - MCQ Test 4 - Question 17

At room temperature, HCl is a gas while HF is a liquid because:                                      

IIT JAM Chemistry - MCQ Test 4 - Question 18

The bond order and bond type in the C2 molecule are, respectively:

IIT JAM Chemistry - MCQ Test 4 - Question 19

The major product formed in the following reacting is

IIT JAM Chemistry - MCQ Test 4 - Question 20

Predict the condition A and the structure of the major product B in the following sequence.

IIT JAM Chemistry - MCQ Test 4 - Question 21

The major product B is:

IIT JAM Chemistry - MCQ Test 4 - Question 22

The major product P is:

 

IIT JAM Chemistry - MCQ Test 4 - Question 23

The conditions A-B, required for the following pericyclic are

IIT JAM Chemistry - MCQ Test 4 - Question 24

The major product P is:

IIT JAM Chemistry - MCQ Test 4 - Question 25

Solubility of BaSO4 in aqueous solution is 1 × 10–5 M. Hence, solubility in 0.1 M BaCl2 is:

Detailed Solution for IIT JAM Chemistry - MCQ Test 4 - Question 25

BaSO₄ ---------> Ba²⁺ + SO₄²⁻
According to ICE table
BaSO₄ -----------------> Ba²⁺ + SO₄²⁻
I                     0.1 M    0
C                    +s       +s
E                    s + 0.1    s
therefore we can write
ksp = ( s + 0.01) . s
as the value of ksp is very small as compared to silver ions initial concentration
we can use approximation
s + 0.1 ≈ 0.1
Ksp = 0.01 . s
s = 1 X 10⁻⁵ / 0.1
s = 0.0001 mol/ L
s = 1 X 10⁻4 mol/ L

IIT JAM Chemistry - MCQ Test 4 - Question 26

pH of a mixture of 1 M benzoic acid (pKa = 4.20) and 1 M sodium benzoate is 4.5. In 300 mL buffer, benzoic acid is:           

IIT JAM Chemistry - MCQ Test 4 - Question 27

58.5 g of NaCl and 180g of glucose were separately dissolved in 1L of water. Identify the correct statements regarding the elevation in boiling point of solution.           

IIT JAM Chemistry - MCQ Test 4 - Question 28

Elevation in boiling point of solution of 13.44g og CuCl2 in 1 Kg of water will be (M.wt = 134.4, Kb =0.52Kmolal-1, assume it is a strong electrolyte)           

IIT JAM Chemistry - MCQ Test 4 - Question 29

At 700 K, the equilibrium constant Kp, for the reaction 2 SO3 (g) ⇌ 2 SO2 (g) + O2 Is 1.8 X 10-3 kPa. What is the numerical value in moles per liter of Kc for the reaction at the same temperature?

IIT JAM Chemistry - MCQ Test 4 - Question 30

0.1 mol of N2O4(g) was sealed in a tube under 1 atmospheric pressure at 25oC. Calculate the no of mole of NO2(g) present if equilibrium is reached after sometime (Kp = 0.14)           

*Multiple options can be correct
IIT JAM Chemistry - MCQ Test 4 - Question 31

The compound pair which shows correct order of angle:

(I) NH3> PH3,    (II) H2S < H2O,           (III) NO2+ >NO2    (IV) 

*Multiple options can be correct
IIT JAM Chemistry - MCQ Test 4 - Question 32

The correct statement among the following is:           

*Multiple options can be correct
IIT JAM Chemistry - MCQ Test 4 - Question 33

Which of the following solutions are isotonic (R = 0.0821 atmK-1mol-1)

*Multiple options can be correct
IIT JAM Chemistry - MCQ Test 4 - Question 34

Some or more species give belowhave pH less than 7.

Detailed Solution for IIT JAM Chemistry - MCQ Test 4 - Question 34

The pH of 10-8M HCl solution is 6.98
The pH of NaoH solution will be 8
The pH of 10 mL of 10-6 M HCl diluted to 100 mL is 6.99

*Multiple options can be correct
IIT JAM Chemistry - MCQ Test 4 - Question 35

For the chemical equilibrium, CaCO3(s)  CaO(s) + CO2(g), DH°r can be determined from which one of the following plots:

*Multiple options can be correct
IIT JAM Chemistry - MCQ Test 4 - Question 36

In I3

*Multiple options can be correct
IIT JAM Chemistry - MCQ Test 4 - Question 37

Which of the following molecule is expected to exhibit diamagnetic behavior ?

*Multiple options can be correct
IIT JAM Chemistry - MCQ Test 4 - Question 38

Select correct statements:

*Multiple options can be correct
IIT JAM Chemistry - MCQ Test 4 - Question 39

Which have a linear structure

*Multiple options can be correct
IIT JAM Chemistry - MCQ Test 4 - Question 40

According to Le-Chatelier’s principle, the equilibrium constant of a reversible reaction will not shift by:           

*Answer can only contain numeric values
IIT JAM Chemistry - MCQ Test 4 - Question 41

The atomicity and the total number of bonds in the elemental white phosphorous molecule are:


*Answer can only contain numeric values
IIT JAM Chemistry - MCQ Test 4 - Question 42

The number of isomers having non–zero dipole moment for PCl2F3 in the trigonal bipyramidal geometry is:


*Answer can only contain numeric values
IIT JAM Chemistry - MCQ Test 4 - Question 43

The number of lone pairs (TOTAL) of electrons on the central atom in I3-, ClF3 and  CIO3are:


*Answer can only contain numeric values
IIT JAM Chemistry - MCQ Test 4 - Question 44

What is the bond order in NO molecule:


*Answer can only contain numeric values
IIT JAM Chemistry - MCQ Test 4 - Question 45

Measured freezing point depression point of a 0.1m aq. Acetic acid solution is 0.19oC. The acid dissociation constant at this concentration will be (in the multiple of 10–5):


*Answer can only contain numeric values
IIT JAM Chemistry - MCQ Test 4 - Question 46

How many of following behave as Lewis Base and as well as Lowry-Bronsted base ?


*Answer can only contain numeric values
IIT JAM Chemistry - MCQ Test 4 - Question 47

30 cc of M/3 HCl, 20cc of M/2 HNO3 and 40 cc of M/4 NaOH are mixed and volume was made   upto 1 dm3 . pH of resulting solution is:


*Answer can only contain numeric values
IIT JAM Chemistry - MCQ Test 4 - Question 48

Maximum coordination number of Oxygen in liquid water is:


*Answer can only contain numeric values
IIT JAM Chemistry - MCQ Test 4 - Question 49

As-Cl bond distance in AsCl3 is 2.20 angstrom. If radius of Chlorine atom is 0.99 Å, Then, radius (in Å) of As atom is:


*Answer can only contain numeric values
IIT JAM Chemistry - MCQ Test 4 - Question 50

No of correct matches are:


*Answer can only contain numeric values
IIT JAM Chemistry - MCQ Test 4 - Question 51

50.0 mL of 0.3 M HCl is mixed with 50 mL of 0.4 M NH3 solution. If pKa of NH4+ is 9.26, pH of the mixture is:


*Answer can only contain numeric values
IIT JAM Chemistry - MCQ Test 4 - Question 52

if the freezing point of 0.1 molal HA(aq) is –0.2046°C, then pH of the solution is [Kf(H2O) = 1.86°C mol–1 kg]:


*Answer can only contain numeric values
IIT JAM Chemistry - MCQ Test 4 - Question 53

A solution containing 30g of non-volatile solute in exactly 90g of water has a vapor pressure of    21.85 mm of Hg at 25oC. Further 18g of water is then added to the solution. The resulting       solution has then vapor pressure of 22.15 mmHg at same temp. M.wt. of solute will be:


*Answer can only contain numeric values
IIT JAM Chemistry - MCQ Test 4 - Question 54

[OH] in a solution prepared by mixing equal volumes of 0.3 M methyl amine (CH3NH2, Kb = 3.7 × 10–4) and 0.60 M CH3NH3+Clis (in the multiple of 10–4 M):


*Answer can only contain numeric values
IIT JAM Chemistry - MCQ Test 4 - Question 55

The Si—O—Si bond angle in Ph3SiOSiPh3 is:


*Answer can only contain numeric values
IIT JAM Chemistry - MCQ Test 4 - Question 56

Number of lone pair(s) in XeOF4 is/are:


*Answer can only contain numeric values
IIT JAM Chemistry - MCQ Test 4 - Question 57

No of tetrahedral units in the structure of  are:


*Answer can only contain numeric values
IIT JAM Chemistry - MCQ Test 4 - Question 58

The number (total) of σ and π bonds present in the C3O2 are:


*Answer can only contain numeric values
IIT JAM Chemistry - MCQ Test 4 - Question 59

The number of isomers having non–zero dipole moment for PCl2F3 in the trigonal bipyramidal geometry is:


*Answer can only contain numeric values
IIT JAM Chemistry - MCQ Test 4 - Question 60

What is the bond order in NO molecule:


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