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NEET 2019 Solved Question Paper- Chemistry

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Posted by Mahak Jain, 8/2/2021
NEET 2019 Solved Question Paper- Chemistry

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Attempting question papers is best way to practice. In this blog you have NEET 2019 solved question paper.

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

1. Before visiting the NEET 2019 solved question paper 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 same.

3. Chemistry is a subject where you have much to learn and more to revise. So, make some small notes for last minute revision. Specially for organic chemistry make a list of name reactions. Visit this blog to get a complete list of name reactions.

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5. Clear all your doubts. Download Kunduz app for free to ask doubts from best tutors at AIIMS.

Bonus article to score good in NEET. NEET UG Important Chapters.

After reading all the above points, you are good to go for NEET 2019 solved question paper.

NEET 2019 Solved Question Paper

Question 1

The number of sigma (σ) and pi (π) bonds in pent-2-en-4-yne is

  1. 10σ bonds and 3π bonds
  2. 8σ bonds and 5π bonds
  3. 11σ bonds and 2π bonds
  4. 13σ bonds and no π bonds

Correct answer: 1

The number of sigma (σ) and pi (π) bonds in pent-2-en-4-yne is

Question 2

The structure of intermediate A in the following reaction, is

The structure of intermediate A in the following reaction, is

Correct answer: 2

The structure of intermediate A in the following reaction, is NEET 2019 Solved Question Paper

Question 3

The correct structure of tribromooctaoxide is

The correct structure of tribromooctaoxide is

Correct answer: 1

The correct structure of tribromooctaoxide is

Question 4

4d, 5p, 5f and 6p orbitals are arranged in the order of decreasing energy. The correct option is

  1. 5f > 6p > 5p > 4d
  2. 6p > 5f > 5p > 4d
  3. 6p > 5f > 4d > 5p
  4. 5f > 6p > 4d > 5p

Correct answer: 1

4d, 5p, 5f and 6p orbitals are arranged in the order of decreasing energy. The correct option is NEET 2019 Solved Question Paper

Question 5

Which of the following reactions are disproportionation reaction?

(a) 2Cu+ → Cu2+ + Cu0

(b) 3MnO42- + 4H+ → 2MnO4 + MnO2 + 2H20

(c) 2KMnO4 + heat → K2MnO4 + MnO2 + O2

(d) 2MnO4 + 3Mn2+ + 2H2O → 5MnO2 + 4H+

Select the correct option from the following

  1. (a) and (b) only
  2. (a), (b) and (c)
  3. (a), (c) and (d)
  4. (a) and (d) only

Correct answer: 1

Which of the following reactions are disproportionation reaction

Question 6

Under isothermal condition, a gas at 300 K expands from 0.1 L to 0.25 L against a constant external pressure of 2 bar. The work done by the gas is

(Given that 1 L bar = 100 J)

  1. –30 J
  2. 5 kJ
  3. 25 J
  4. 30 J

Correct answer: 1

Under isothermal condition, a gas at 300 K expands from 0.1 L to 0.25 L against a constant external pressure of 2 bar. The work done by the gas is NEET 2019 Solved Question Paper

Question 7

Among the following, the one that is not a green house gas is

  1. Nitrous oxide
  2. Methane
  3. Ozone
  4. Sulphur dioxide

Correct answer: 4

Among the following, the one that is not a green house gas is

Question 8

For the cell reaction

2Fe3+ (aq) + 2I (aq) → 2Fe2+ (aq) + I2 (aq)

E0 0.24 V cell at 298 K. The standard Gibbs energy Θ r ( G) of the cell reaction is:

[Given that Faraday constant F = 96500 C mol–1]

  1. – 46.32 kJ mol–1
  2. – 23.16 kJ mol–1
  3. 46.32 kJ mol–1
  4. 23.16 kJ mol–1

Correct answer: 1

NEET 2019 question paper with solutions Chemistry

Question 9

Enzymes that utilize ATP in phosphate transfer require an alkaline earth metal (M) as the cofactor. M is:

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

Correct answer: 2

Enzymes that utilize ATP in phosphate transfer require an alkaline earth metal (M) as the cofactor. M is

Question 10

The most suitable reagent for the following conversion, is:

The most suitable reagent for the following conversion, is
  1. Na/liquid NH3
  2. H2, Pd/C, quinoline
  3. Zn/HCl
  4. Hg2+/H+, H2O

Correct answer: 2

The most suitable reagent for the following conversion is NEET 2019 Solved Question Paper

Question 11

Which is the correct thermal stability order for H2E (E = O, S, Se, Te and Po)?

1. H2S < H2O < H2Se < H2Te < H2Po

2. H2O < H2S < H2Se < H2Te < H2Po

3. H2Po < H2Te < H2Se < H2S < H2O

4. H2Se < H2Te < H2Po < H2O < H2S

Correct answer: 3

Which is the correct thermal stability order for H2E (E = O, S, Se, Te and Po)

Question 12

Which of the following is incorrect statement?

  1. PbF4 is covalent in nature
  2. SiCl4 is easily hydrolysed
  3. GeX4 (X = F, Cl, Br, I) is more stable than GeX2
  4. SnF4 is ionic in nature

Correct answer: 1

NEET 2019 Solved Question Paper

Question 13

Match the following:

(a) Pure nitrogen(i) Chlorine
(b) Haber process(ii) Sulphuric acid
(c) Contact process(iii) Ammonia
(d) Deacon’s process(iv) Sodium azide or
Barium azide

Which of the following is the correct option?

(a)(b)(c)(d)
(1)(i)(ii)(iii)(iv)
(2)(ii)(iv)(i)(iii)
(3)(iii)(iv)(ii)(i)
(4)(iv)(iii)(ii)(i)

Correct answer: 4

NEET 2019 question paper with solutions Chemistry

Question 14

Which of the following diatomic molecular species has only π bonds according to Molecular Orbital Theory?

  1. O2
  2. N2
  3. C2
  4. Be2

Correct answer: 3

Which of the following diatomic molecular species has only π bonds according to Molecular Orbital Theory NEET 2019 Solved Question Paper

Question 15

For the second period elements the correct increasing order of first ionisation enthalpy is:

  1. Li < Be < B < C < N < O < F < Ne
  2. Li < B < Be < C < O < N < F < Ne
  3. Li < B < Be < C < N < O < F < Ne
  4. Li < Be < B < C < O < N < F < Ne

Correct answer: 2

For the second period elements the correct increasing order of first ionisation enthalpy is

Question 16

The biodegradable polymer is:

  1. Nylon-6,6
  2. Nylon-2-Nylon 6
  3. Nylon-6
  4. Buna-S

Correct answer: 2

Question 17

pH of a saturated solution of Ca(OH)2 is 9. The solubility product (Ksp) of Ca(OH)2 is:

  1. 0.5 × 10-15
  2. 0.25 × 10-10
  3. 0.125 × 10-15
  4. 0.5 × 10-10

Correct answer: 1

pH of a saturated solution of Ca(OH)2 is 9. The solubility product (Ksp) of Ca(OH)2 is

Question 18

If the rate constant for a first order reaction is k, the time (t) required for the completion of 99% of the reaction is given by:

1. t=0.693/k

2. t=6.909/k

3. t=4.606/k

4. t=2.303/k

Correct answer: 3

If the rate constant for a first order reaction is k, the time (t) required for the completion of 99% of the reaction is given by NEET 2019 Solved Question Paper

Question 19

The non-essential amino acid among the following is:

  1. Valine
  2. Leucine
  3. Alanine
  4. Lysine

Correct answer: 3

Question 20

Among the following, the reaction that proceeds through an electrophilic substitution is:

Among the following, the reaction that proceeds through an electrophilic substitution, is

Correct answer: 2

Among the following, the reaction that proceeds through an electrophilic substitution is NEET 2019 Solved Question Paper

Question 21

The mixture that forms maximum boiling azeotrope is:

  1. Water + Nitric acid
  2. Ethanol + Water
  3. Acetone + Carbon disulphide
  4. Heptane + Octane

Correct answer: 1

The mixture that forms maximum boiling azeotrope is

Question 22

For the chemical reaction

N2(g) + 3H2(g) ⇌ 2NH3(g)

The correct option is:

  1. -d[H2]/3dt = d[NH3]/2dt
  2. -d[N2]/dt = 2d[NH3]/dt
  3. -d[N2]/dt = d[NH3]/2dt
  4. 3d[H2]/dt = 2d[NH3]/dt

Correct answer: 3

For the chemical reaction NEET 2019 question paper with solutions Chemistry

Question 23

The number of moles of hydrogen molecules required to produce 20 moles of ammonia through Haber’s process is:

  1. 10
  2. 20
  3. 30
  4. 40

Correct answer: 3

The number of moles of hydrogen molecules required to produce 20 moles of ammonia through Haber's process is

Question 24

The compound that is most difficult to protonate is:

The compound that is most difficult to protonate is

Correct answer: 4

The compound that is most difficult to protonate is NEET 2019 Solved Question Paper

Question 25

For an ideal solution, the correct option is:

1. ∆mix S = 0 at constant T and P

2. ∆mix V ≠ 0 at constant T and P

3. ∆mix H = 0 at constant T and P

4. ∆mix G = 0 at constant T and P

Correct answer: 3

For an ideal solution, the correct option is

Question 26

Conjugate base for Bronsted acids H2O and HF are:

  1. OH and H2F+, respectively
  2. H3O+ and F, respectively
  3. OH and F, respectively
  4. H3O+ and H2F+, respectively

Correct answer: 3

Conjugate base for Bronsted acids H2O and HF are NEET 2019 Solved Question Paper

Question 27

Which mixture of the solutions will lead to the formation of negatively charged colloidal [Agl]l sol ?

1. 50 mL of 1 M AgNO3 + 50 mL of 1.5 M KI

2. 50 mL of 1 M AgNO3 + 50 mL of 2 M KI

3. 50 mL of 2 M AgNO3 + 50 mL of 1.5 M KI

4. 50 mL of 0.1 M AgNO3 + 50 mL of 0.1 M KI

Correct answer: 2

Which mixture of the solutions will lead to the formation of negatively charged colloidal [Agl]l– sol

Question 28

Among the following, the narrow spectrum antibiotic is:

  1. Penicillin G
  2. Ampicillin
  3. Amoxycillin
  4. Chloramphenicol

Correct answer: 1

Question 29

An alkene “A” on reaction with O3 and Zn–H2O gives propanone and ethanal in equimolar ratio. Addition of HCl to alkene “A” gives “B” as the major product. The structure of product “B” is:

An alkene "A" on reaction with O3 and Zn–H2O gives propanone and ethanal in equimolar ratio. Addition of HCl to alkene "A" gives "B" as the major product. The structure of product "B" is

Correct answer: 3

An alkene "A" on reaction with O3 and Zn–H2O gives propanone and ethanal in equimolar ratio. Addition of HCl to alkene "A" gives "B" as the major product. The structure of product "B" is

Question 30

What is the correct electronic configuration of the central atom in K4[Fe(CN)6] based on crystal field theory?

  1. t2g4 eg2
  2. t2g6 eg0
  3. e3 t23
  4. e4 t22

Correct answer: 2

What is the correct electronic configuration of the central atom in K4[Fe(CN)6] based on crystal field theory NEET 2019 Solved Question Paper

Question 31

Identify the incorrect statement related to PCl5 from the following:

  1. Three equatorial P–Cl bonds make an angle of 120° with each other
  2. Two axial P–Cl bonds make an angle of 180° with each other
  3. Axial P–Cl bonds are longer than equatorial P–Cl bonds
  4. PCl5 molecule is non-reactive

Correct answer: 4

Identify the incorrect statement related to PCl5 from the following

Question 32

Which will make basic buffer?

1. 50 mL of 0.1 M NaOH + 25 mL of 0.1 M CH3COOH

2. 100 mL of 0.1 M CH3COOH + 100 mL of 0.1 M NaOH

3. 100 mL of 0.1 M HCl + 200 mL of 0.1 M NH4OH

4. 100 mL of 0.1 M HCl + 100 mL of 0.1 M NaOH

Correct answer: 3

Which will make basic buffer NEET 2019 Solved Question Paper

Question 33

The major product of the following reaction is:

The major product of the following reaction is

Correct answer: 2

The major product of the following reaction is

Question 34

Match the Xenon compounds in Column-I with its structure in Column-II and assign the correct code:

Column-IColumn-II
(a) XeF4(i) Pyramidal
(b) XeF6(ii) Square planar
(c) XeOF4(iii) Distorted octahedral
(d)XeO3(iv) Square pyramidal

Code:

(a)(b)(c)(d)
(1)(i)(ii)(iii)(iv)
(2)(ii)(iii)(iv)(i)
(3)(ii)(iii)(i)(iv)
(4)(iii)(iv)(i)(ii)

Correct answer: 2

Match the Xenon compounds in Column-I with its structure in Column-II and assign the correct code NEET 2019 Solved Question Paper

Question 35

The manganate and permanganate ions are tetrahedral, due to:

  1. The π-bonding involves overlap of p-orbitals of oxygen with d-orbitals of manganese
  2. There is no π-bonding
  3. The π-bonding involves overlap of p-orbitals of oxygen with p-orbitals of manganese
  4. The π-bonding involves overlap of d-orbitals of oxygen with d-orbitals of manganese

Correct answer: 1

The manganate and permanganate ions are tetrahedral, due to

Question 36

Which of the following species is not stable?

  1. [SiF6]2-
  2. [GeCl6]2-
  3. [Sn(OH)6]2-
  4. [SiCl6]2-

Correct answer: 4

Which of the following species is not stable NEET 2019 Solved Question Paper

Question 37

For a cell involving one electron E°cell = 0.59 V at 298 K, the equilibrium constant for the cell reaction is:

[Given that 2.303RT/F = 0.059 at T = 298K]

1. 1.0 × 102

2. 1.0 × 105

3. 1.0 × 1010

4. 1.0 × 1030

Correct answer: 3

For a cell involving one electron E°cell = 0.59 V at 298 K, the equilibrium constant for the cell reaction is

Question 38

Which of the following is an amphoteric hydroxide?

  1. Sr(OH)2
  2. Ca(OH)2
  3. Mg(OH)2
  4. Be(OH)2

Correct answer: 4

Which of the following is an amphoteric hydroxide NEET 2019 Solved Question Paper

Question 39

A gas at 350 K and 15 bar has molar volume 20 percent smaller than that for an ideal gas under the same conditions. The correct option about the gas and its compressibility factor (Z) is:

1. Z > 1 and attractive forces are dominant

2. Z < 1 and attractive forces are dominant

3. Z > 1 and repulsive forces are dominant

4. Z < 1 and repulsive forces are dominant

Correct answer: 2

A gas at 350 K and 15 bar has molar volume 20 percent smaller than that for an ideal gas under the same conditions. The correct option about the gas and its compressibility factor (Z) is

Question 40

A compound is formed by cation C and anion A. The anions form hexagonal close packed (hcp) lattice and the cations occupy 75% of octahedral voids. The formula of the compound is :

1. C2A3

2. C3A2

3. C3A4

4. C4A3

Correct answer: 3

A compound is formed by cation C and anion A. The anions form hexagonal close packed (hcp) lattice and the cations occupy 75% of octahedral voids. The formula of the compound is NEET 2019 Solved Question Paper

Question 41

In which case change in entropy is negative?

  1. Evaporation of water
  2. Expansion of a gas at constant temperature
  3. Sublimation of solid to gas
  4. 2H(g) → H2(g)

Correct answer: 4

In which case change in entropy is negative

Question 42

Which of the following series of transitions in the spectrum of hydrogen atom fall in visible region?

  1. Lyman series
  2. Balmer series
  3. Paschen series
  4. Brackett series

Correct answer: 2

Which of the following series of transitions in the spectrum of hydrogen atom fall in visible region NEET 2019 Solved Question Paper

Question 43

The method used to remove temporary hardness of water is:

  1. Calgon’s method
  2. Clark’s method
  3. Ion-exchange method
  4. Synthetic resins method

Correct answer: 2

The method used to remove temporary hardness of water is

Question 44

Which one is malachite from the following?

  1. CuFeS2
  2. Cu(OH)2
  3. Fe3O4
  4. CuCO3.Cu(OH)2

Correct answer: 4

Which one is malachite from the following NEET 2019 Solved Question Paper

Question 45

The correct order of the basic strength of methyl substituted amines in aqueous solution is:

1.(CH3)2NH > CH3NH2 > (CH3)3N

2.(CH3)3N > CH3NH2 > (CH3)2NH

3.(CH3)3N > (CH3)2NH > CH3NH2

4.CH3NH2 > (CH3)2NH > (CH3)3N

Correct answer: 1

The correct order of the basic strength of methyl substituted amines in aqueous solution is

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