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JEE Main 2021 Question Paper with Solutions- 24 Feb C2

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Posted by Mahak Jain, 17/3/2021
JEE Main 2021 Question Paper with Solutions- 24 Feb C2

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Attempting question papers is best way to practice. In this blog you have JEE Main 2021 question paper with solutions for 24th February shift 1.

In this blog we provide you JEE Main 2021 question paper with solutions for free. Here at Kunduz we aim to provide quality solutions from best tutors at Kunduz. These solutions for JEE Main 2021 question paper are prepared by Kunduz tutors.

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JEE Main 2021 Question Paper with Solutions- 24 February Shift 1

Chemistry

Question 1

S in BUNA-S stands for?

  1. Styrene
  2. Strength
  3. Stoichiometry
  4. Secondary

Correct answer: 1

S in BUNA-S stands for

Question 2

Bond angle and shape of I3 ion is?

  1. 180o and sp3d
  2. 180o and sp3d2
  3. 90o and sp3d
  4. 90o and sp3d2

Correct answer: 1

Bond angle and shape of I3- ion is JEE Main 2021 question paper

Question 3

The following conversion can take place by:

JEE Main 2021 question paper

1. (i) Br2/Fe (ii) Sn/HCl

2. (i) Br2/Fe (ii) Sn/HCl (iii) NaNO2/HCl (iv) Cu2Br2

3. (i) Cu2Br2 (ii) Sn/HCl (i) Br2/Fe

4. None of these

Correct answer: 2

The following conversion can take place by

Question 4

According to Bohr’s model which of the following transition will be having maximum frequency?

  1. 3 to 2
  2. 5 to 4
  3. 4 to 3
  4. 2 to 1

Correct answer: 4

According to Bohr’s model which of the following transition will be having maximum frequency JEE Main 2021 question paper

Question 5

Concentration of Pbl2 is given as = 0.1 M ;Ksp = 8 x 10-9. Find solubility of Pb+2 .

  1. 1.4 x 10-3
  2. 2 x 10-4
  3. 1.26 x 10-3
  4. 1.8 x 10-2

Correct answer: 3

Concentration of Pbl2 is given as = 0.1 M ;Ksp = 8 x 10-9. Find solubility of Pb+2

Question 6

Increasing strength towards nucleophilic attack ?

JEE Main 2021 question paper
  1. (I) < (II) < (III) < (IV)
  2. (IV) < (III) < (II) < (I)
  3. (IV) < (II) < (III) < (I)
  4. (I) < (III) < (II) < (IV)

Correct answer: 1

Increasing strength towards nucleophilic attack JEE Main 2021 question paper

Question 7

Statement1: Hydrogen is most abundant in universe but not so in Earth’s troposphere.

Statement2: Hydrogen is the lightest element

1. Statement 1 is correct and Statement 2 is incorrect.

2. Statement 1 is incorrect and Statement 2 is correct.

3. Statement 1 is correct and Statement 2 is correct explanation for statement 1.

4. Statement 1 is correct and Statement 2 is incorrect explanation for statement 1.

Correct answer: 3

Hydrogen is most abundant in universe but not so in Earth’s troposphere

Question 8

Which of the following salts help in blood clotting?

  1. FeCl3
  2. Mg(HCO3)2
  3. NaHCO3
  4. FeSO4

Correct answer: 1

Which of the following salts help in blood clotting JEE Main 2021 question paper

Question 9

Match the following:

(p) Al(i) Siderite
(q) Zn(ii) Malachite
(r) Fe(iii) Calamine
(s) Cu(iv) Bauxite
  1. p → (iv); q → (iii), r → (i), s → (ii)
  2. p → (i); q → (ii), r → (iv), s → (iii)
  3. p → (iv); q → (iii), r → (ii), s → (i)
  4. p → (iii); q → (iv), r → (i), s → (ii)

Correct answer: 1

Match the following

Question 10

What will be the magnetic moments (spin only values) of the following complexes?

[FeCl4]2- ,[ Co(C2O4)3]3- ,MnO42-

  1. √3,0,0
  2. √24,0,√3
  3. √24,√24,0
  4. √3,0,√24

Correct answer: 2

What will be the magnetic moments (spin only values) of the following complexes JEE Main 2021 question paper

Question 11

Compare the wavelength in flame test for LiCl, NaCl, KCl, RbCl, CsCl

  1. NaCl < CsCl < LiCl < RbCl < KCl
  2. CsCl < NaCl < LiCl < KCl < RbCl
  3. RbCl < KCl < LiCl < CsCl < NaCl
  4. CsCl < NaCl < KCl < LiCl < RbCl

Correct answer: 2

Compare the wavelength in flame test for LiCl, NaCl, KCl, RbCl, CsCl

Question 12

Choose incorrect statement:

  1. RuO4 is oxidizing agent
  2. OsO4 is reducing agent
  3. Cr2O3is amphoteric
  4. Red colour of ruby is due to Co3+

Correct answer: 2

Choose incorrect statement JEE Main 2021 question paper

Question 13

Which of the following has highest M.P.?

  1. MgO
  2. LiF
  3. NaCl
  4. LiCl

Correct answer: 1

Which of the following has highest MP

Question 14

Arrange the following in the increasing order of their density: Zn, Fe, Cr, Co

  1. Zn < Cr < Co < Fe
  2. Fe < Co < Cr < Zn
  3. Fe < Cr < Co < Zn
  4. Zn < Cr < Fe < Co

Correct answer: 4

Arrange the following in the increasing order of their density: Zn, Fe, Cr, Co JEE Main 2021 question paper

JEE Main Frequently Asked Questions (FAQs)

Question 1: When is JEE mains 2021 exams?

Answer: National Testing Agency has announced dates for all phases of JEE Mains. First phase is in February 2021 (23, 24, 25 and 26). Second phase is in March 2021 (15, 16, 17 & 18) , third in April 2021 (27, 28, 29 & 30) and fourth in May 2021 (24, 25, 26, 27 & 28). To get more details about JEE Mains click here.

Question 2: Can I challenge JEE Mains 2021 answer key? How?

Answer: Yes, candidates who have objection to the answer key given by National Testing Agency can go to jeemain.nta.nic.in , from where they can challenge answer key.

Question 3: Does National Testing Agency refund JEE Mains 2021 answer key fees.

Answer: Yes, National Testing Agency refund fees if objection is found valid with proper supporting documents.

Question 4: Who will conduct JEE Mains 2021 Counseling?

Answer: Joint Seat Allocation Authority (JoSAA) is responsible for counseling of JEE Mains 2021 qualified students.


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