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JEE Main 2019 Question paper with solutions- 10 Jan C1

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JEE Main 2019 Question paper with solutions- 10 Jan C1

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Attempting question papers is best way to practice. In this blog you have JEE Main 2019 solved question paper with solutions for 10th January shift 1.

Before starting with JEE Main 2019 solved question paper, let me tell you some tips to prepare better and score higher.

1. Before seeing JEE Main 2019 question paper with solutions you should know the syllabus and exam paper pattern. Click here to know the same.

2. One should be aware of previous year chapter wise weightage. Click here to know the chapter wise weightage of JEE Main’s previous year paper.

3. Make a proper schedule. While planning out a schedule for JEE Main preparation, it will be beneficial for you to have a properly structured schedule. Click here to read a short article on time management.

4. List down all important reactions. Chemistry requires regular revision. Kunduz can help you with the same. Visit our lecture section.

5. Name reactions are very important for Organic Chemistry. Get here all the name reactions for organic chemistry.

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JEE Main 2019 Question Paper with Solutions- 10 January Shift 1

Chemistry

Question 1

Two pi and half sigma bonds are present in :

  1. N2+
  2. N2
  3. O2+
  4. O2

Correct answer: 1

Two pi and half sigma bonds are present in

Question 2

The chemical nature of hydrogen peroxide is:

  1. Oxidising agent in acidic medium but not in basic medium.
  2. Reducing agent in basic medium , but not in acidic medium.
  3. Oxidising and reducing agent in acidic medium , but not in basic medium.
  4. Oxidising and reducing agent in both acidic and basic medium.

Correct answer: 4

The chemical nature of hydrogen peroxide is JEE Main 2019 question paper with solutions

Question 3

Which dicarboxylic acid in presence of a dehydrating agent is least reactive to give an anhydride?

1.
2.
3.
4.

Correct answer: 4

Which dicarboxylic acid in presence of a dehydrating agent is least reactive to give an anhydride

Question 4

Which premitive unit cell has unequal edge lengths (a ≠ b ≠ c ≠) and all axial angles different from 90o?

  1. Tetragonal
  2. Hexagonal
  3. Monoclinic
  4. Triclinic 

Correct answer: 4

Which premitive unit cell has unequal edge lengths (a ≠ b ≠ c ≠) and all axial angles different from 90 JEE Main 2019 question paper with solutions

Question 5

Wilkinson catalyst is :

  1. (Ph3P)3RhCl
  2. (Et3P)3IrCl
  3. (Et3P)3RhCl
  4. (Ph3P)3IrCl

Correct answer: 1

Wilkinson catalyst is

Question 6

The total number of isotopes of hydrogen and number of radioactive isotopes among them , respectively , are :

  1. 2 and 0
  2. 3 and 2
  3. 3 and 1
  4. 2 and 1

Correct answer: 3

The total number of isotopes of hydrogen and number of radioactive isotopes among them , respectively , are JEE Main 2019 question paper with solutions

Question 7

The major product of the following reaction is:

1.
2.
3.
4.

Correct answer: 3

The major product of the following reaction is

Question 8

The total number of isomers for a square planar complex [M(F)(Cl)(SCN)(NO2)] is:

  1. 12
  2. 8
  3. 16
  4. 4

Correct answer: 1

The total number of isomers for a square planar complex [M(F)(Cl)(SCN)(NO2)] is JEE Main 2019 question paper with solutions

Question 9

Hall-Heroult’s process is given by :

1.Cu^{2+}(aq)+H_{2}(g)\rightarrow Cu(s)+2H^{+}(aq)
2.Cr_{2}O_{3}+2Al \rightarrow Al_{2}O_{3}+2Cr
3.2Al_{2}O_{3}+3C\rightarrow 4Al +3CO_{2}
4.ZnO+C\overset{Coke,1673K}{\rightarrow}Zn+CO

Correct answer: 3

Hall-Heroult's process is given by

Question 10

The value of Kp/Kc  for the following reactions at 300 K are respectively : (At 300 K , RT = 24.62 dm3atm mol-1)

N2O4(g) + O2(g) ⇌ 2NO(g) N2O4(g) ⇌ 2NO2(g)

N2(g) + H2(g) ⇌ 2NH3(g)

1. 1, 24.62 dm3atm mol-1, 606.0 dm6atm2 mol-2

2. 1, 0.041dm-3atm-1 mol-1, 606.0 dm6atm2 mol-2

3. 1, 0.00165 dm3atm-2 mol-1, 606.0 dm6atm2 mol-2

4. 1, 24.62 dm3atm mol-1, 0.00165 dm-6atm-2 mol2

Correct answer: 4

The value of Kp/Kc  for the following reactions at 300 K are respectively JEE Main 2019 question paper with solutions

Question 11

If dichloromethane (DCM) and water are used for differential extraction , which one of the following statements is correct?

1. DCM and H2O would stay as lower and upper layer respectively in the S.F.

2. DCM and H2O will be miscible clearly 

3. DCM and H2O would stay as upper and lower layer respectively in the separating funnel (S.F.)

4. DCM and H2O will make turbid / colloidal mixture.

Correct answer: 1

If dichloromethane (DCM) and water are used for differential extraction , which one of the following statements is correct

Question 12

The type of hybridisation and number of lone pair (s) of electrons of Xe in XeOF4 respectively , are :

1. sp3d and 1

2. sp3d and 2

3. sp3d2 and 1

4. sp3d2 and 2

Correct answer: 4

The type of hybridisation and number of lone pair (s) of electrons of Xe in XeOF4 respectively are JEE Main 2019 question paper with solutions

Question 13

The metal used for making X-ray tube window is :

  1. Mg
  2. Na
  3. Ca
  4. Be

Correct answer: 4

The metal used for making X-ray tube window is

Question 14

Consider the given plots for a reaction obeying Arrhenius equation (0℃ < T < 300℃): (k and EA are rate constant and activation energy , respectively)

  1. Both I and II are wrong
  2. I is wrong but II is right
  3. Both I and II are correct
  4. I is right but II is wrong

Correct answer: 3

Consider the given plots for a reaction obeying Arrhenius equation JEE Main 2019 question paper with solutions

Question 15

Water filled in two glasses A and B have BOD values of 10 and 20, respectively. The correct statement regarding them is:

  1. A is more polluted than B.
  2. A is suitable for drinking, whereas B is not
  3. B is more polluted than A
  4. Both A and B are suitable for drinking

Correct answer: 3

Water filled in two glasses A and B have BOD values of 10 and 20, respectively. The correct statement regarding them is

Question 16

The increasing order of the pKa values of the following compounds is :

  1. D<A<C<B
  2. B<C<D<A
  3. C<B<A<D
  4. B<C<A<D

Correct answer: 4

The increasing order of the pKa values of the following compounds is JEE Main 2019 question paper with solutions

Question 17

Liquids A and B form an ideal solution in the entire composition range . At 350 K , the vapor pressures of pure A and pure B are 7⨯103 Pa and 12⨯103 Pa, respectively. The composition of the vapor in equilibrium with a solution containing 40 mol percent of A at this temperature is :

1. XA=0.37 ;XB=0.63

2. XA=0.28 ;XB=0.72

3. XA=0.76 ;XB=0.24

4. XA=0.40 ;XB=0.60

Correct answer: 2

Liquids A and B form an ideal solution in the entire composition range . At 350 K , the vapor pressures of pure A and pure B are 7⨯103 Pa and 12⨯103 Pa, respectively. The composition of the vapor in equilibrium with a solution containing 40 mol percent of A at this temperature is

Question 18

Consider the following reduction processes

The reducing power of the metals increases in order :

  1. Ca < Zn < Mg < Ni
  2. Ni < Zn < Mg < Ca
  3. Zn < Mg < Ni < Ca
  4. Ca < Mg < Zn < Ni

Correct answer: 2

Consider the following reduction processes The reducing power of the metals increases in order JEE Main 2019 question paper with solutions

Question 19

The major product of the following reaction is:

1.
 
2.
3.
4.

Correct answer: 4

The major product of the following reaction is

Question 20

The electronegativity of aluminium is similar to :

  1. Boron
  2. Carbon
  3. Lithium
  4. Beryllium

Correct answer: 4

The electronegativity of aluminium is similar to JEE Main 2019 question paper with solutions

Question 21

The decreasing order of ease of alkaline hydrolysis for the following esters is 

  1. IV>II>III>I
  2. III>II>I>IV
  3. III>II>I>IV
  4. II>III>IV>I

Correct answer: 2

The decreasing order of ease of alkaline hydrolysis for the following esters is

Question 22

A process has △H=200J/mol and △S=40J/K/mol. Out  of the values given below, choose the minimum temperature (in K) above which the process will be spontaneous :

  1. 5K
  2. 4K
  3. 20K
  4. 12K

Correct answer: 1

A process has △H=200J/mol and △S=40J/K/mol. Out  of the values given below, choose the minimum temperature (in K) above which the process will be spontaneous JEE Main 2019 question paper with solutions

Question 23

Which of the graphs shown below does not represent the relationship between incident light and the electron ejected from metal surface ?

1.
2.
3.
4.

Correct answer: 3

Which of the graphs shown below does not represent the relationship between incident light and the electron ejected from metal surface JEE Main 2019 question paper with solutions

Question 24

Which of the following is not an example of heterogeneous catalytic reaction ?

  1. Ostwald’s process
  2. Haber’s process
  3. Combustion of coal
  4. Hydrogenation of vegetable oils

Correct answer: 3

Which of the following is not an example of heterogeneous catalytic reaction JEE Main 2019 question paper with solutions

Question 25

The effect of lanthanoid contraction in the lanthanoid series of the element by and large means?

  1. Decrease in both atomic and ionic radii
  2. Increase in atomic radii and decrease in ionic radii
  3. Increase in both atomic and ionic radii
  4. Decrease in atomic radii and increase in ionic radii.

Correct answer: 1

The effect of lanthanoid contraction in the lanthanoid series of the element by and large means JEE Mains 2019 question paper with solutions

Question 26

The major product formed in the reaction given below will be:

JEE Main 2019 question paper with solutions
1.
2.
3.
4.

Correct answer: Bonus

The major product formed in the reaction given below will be JEE Main 2019 question paper with solutions

Question 27

The correct structure of product ‘P’ in the following reaction is :

JEE Main 2019 question paper with solutions
1.
2.
3.
4.

Correct answer: 2

The correct structure of product 'P' in the following reaction is JEE Main 2019 question paper with solutions

Question 28

Which hydrogen in compound (E) is easily replaceable during bromination reaction in presence of light ?

δCH3γCH2βCH=αCH2

  1. β-hydrogen
  2. γ-hydrogen
  3. δ-hydrogen
  4. α-hydrogen

Correct answer: 2

Which hydrogen in compound (E) is easily replaceable during bromination reaction in presence of light JEE Main 2019 question paper with solutions

Question 29

The major product ‘X’ formed in the following reaction is:

JEE Main 2019 question paper with solutions
1.
2.
3.
4.

Correct answer: 4

The major product X formed in the following reaction is JEE Main 2019 question paper with solutions

Question 30

A mixture of 100 m mol of Ca(OH)2 and 2 g of sodium sulphate was dissolved in water and the volume was made up to 100 mL .The mass of calcium sulphate formed and the concentration of OH in resulting solution, respectively , are  : (Molar mass of  Ca(OH)2, Na2SO4 and CaSO4 are 74, 143 and 136 g/mol, respectively: Ksp of Ca(OH)2 is 5.5⨯10-6

  1. 1.9 g, 0.14 mol/L
  2. 13.6 g, 0.14 mol/L
  3. 1.9 g, 0.28 mol/L
  4. 13.6 g, 0.28 mol/L

Correct answer: 3

A mixture of 100 m mol of Ca(OH)2 and 2 g of sodium sulphate was dissolved in water and the volume was made up to 100 mL .The mass of calcium sulphate formed and the concentration of OH- in resulting solution, respectively are JEE Main 2019 question paper with solutions

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