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JEE Main 2021 26th February Morning Shift

Browse the complete Chemistry, Mathematics, and Physics question set from the JEE Main 2021 26th February Morning Shift paper, question by question. Each question shows a quick preview so you can jump straight to the topic or subject you want to revise. Click through to attempt the full question in practice mode, or head back to the paper-wise list to download the entire shift as a PDF.

This paper has 90 questions in total - 35 easy (39%), 41 moderate (46%) and 14 tough (16%). That's a fairly typical mix for this exam. By subject: Physics 37% easy, 50% moderate, 13% tough; Chemistry 53% easy, 43% moderate, 3% tough; Mathematics 27% easy, 43% moderate, 30% tough.

Chemistry questions were spread across 27 chapters, with Chemical Bonding and Molecular Structure (2), General Organic Chemistry (2), and Haloalkanes and Haloarenes (2) carrying the most weight. Mathematics questions were spread across 22 chapters, with Definite Integration (3), Differential Equations (3), and Binomial Theorem (2) carrying the most weight. Physics questions were spread across 21 chapters, with Laws of Motion (3), Alternating Current (2), and Electrostatics (2) carrying the most weight.

Chemistry

  1. 1An amine on reaction with benzenesulphonyl chloride produces a compound insoluble in alkaline solution. This amine can be prepared by ammono26 Feb, 2021 (M)Preparation and Properties of Amines
  2. 2Find A , B and C in the following reactions: NH 3 + A + CO 2 NH 4 2 CO 3 NH 4 2 CO 3 + H 2 O + B NH 4 HCO 3 NH 4 HCO 3 + NaCl NH 4 Cl + C26 Feb, 2021 (M)Compounds of Alkali Metals
  3. 3Given below are two statements: Statement I : o -Nitrophenol is steam volatile due to intramolecular hydrogen bonding. Statement II : o -Nit26 Feb, 2021 (M)Van Der Waals Forces, Hydrogen Bonding and Metallic Bonding
  4. 4Which one of the following lanthanoids does not form MO 2 ? [ M is lanthanoid metal]26 Feb, 2021 (M)F-Block elements
  5. 5On treating a compound with warm dil. H 2 SO 4 , gas X is evolved which turns K 2 Cr 2 O 7 paper acidified with dil. H 2 SO 4 to a green com26 Feb, 2021 (M)Sulphur and Its Compounds
  6. 6Match List- I with List- II . List- I Electronic configuration of elements List- II i H in kJ mol - 1 a 1 s 2 2 s 2 p 801 b 1 s 2 2 s 2 2 p 26 Feb, 2021 (M)Periodic properties
  7. 7Statements about heavy water are given below. A. Heavy water is used in exchange reactions for the study of reaction mechanisms. B. Heavy wa26 Feb, 2021 (M)Preparation and Properties of Water
  8. 8Given below are two statements: Statement I : A mixture of chloroform and aniline can be separated by simple distillation. Statement II : Wh26 Feb, 2021 (M)Purification of Organic Compounds
  9. 9Identify the major products A and B respectively in the following reactions of phenol26 Feb, 2021 (M)Reactions of Phenol
  10. 10For the given reaction: What is A ?26 Feb, 2021 (M)Preparation and Properties of Monohalides
  11. 11The presence of ozone in troposphere:26 Feb, 2021 (M)Air Pollution
  12. 12Match List- I with List- II . List- I (Ore) List- II (Element Present) a Kernite p Tin b Cassiterite q Boron c Calamine r Fluorine d Cryolit26 Feb, 2021 (M)Minerals and ores
  13. 13Compound A used as a strong oxidizing agent is amphoteric in nature. It is the part of lead storage batteries. Compound A is:26 Feb, 2021 (M)Tin and Lead Containing Compounds
  14. 14Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R . Assertion A : Dipole-dipole interacti26 Feb, 2021 (M)Van Der Waals Forces, Hydrogen Bonding and Metallic Bonding
  15. 15The orbital having two radial as well as two angular nodes is:26 Feb, 2021 (M)Quantum mechanical model
  16. 16For the given reaction: What is A ?26 Feb, 2021 (M)Preparation and Properties of Monohalides
  17. 17A C 4 H 8 Cl 2 373 K Hydrolysis B C 4 H 8 O B reacts with Hydroxyl amine but does not give Tollen s test. Identify A and B .26 Feb, 2021 (M)Method of preparation for both aldehydes and ketones
  18. 18The structure of Neoprene is :26 Feb, 2021 (M)Preparation and Properties of Polymers
  19. 19Which of the following vitamin is helpful in the blood clotting?26 Feb, 2021 (M)Vitamins
  20. 20Which of the following is a FALSE statement?26 Feb, 2021 (M)Quantitative analysis of organic compounds
  21. 21An exothermic reaction X Y has an activation energy 30 kJ mol - 1 . If energy change E during the reaction is - 20 kJ , then the activation 26 Feb, 2021 (M)Arrhenius theory
  22. 22Consider the following reaction MnO 4 - + 8 H + + 5 e - Mn + 2 + 4 H 2 O , E = 1 . 51 V The quantity of electricity required in Faraday to r26 Feb, 2021 (M)Cells and Electrode Potential, Nernst Equation
  23. 233 . 12 g of oxygen is adsorbed on 1 . 2 g of platinum metal. The volume of oxygen adsorbed per gram of the adsorbent at 1 atm and 300 K in L26 Feb, 2021 (M)Adsorption
  24. 24For a chemical reaction A + B = C + D r H = 80 kJ mol - 1 the entropy change r S depends on the temperature T (in K ) as r S = 2 T JK - 1 mo26 Feb, 2021 (M)Third law of thermodynamics
  25. 25Number of bridging CO ligands in Mn 2 CO 10 is26 Feb, 2021 (M)Carbonyl Compounds
  26. 26A homogeneous ideal gaseous reaction AB 2 g A g + 2 B g is carried out in a 25 litre flask at 27 C . The initial amount of AB 2 was 1 mole a26 Feb, 2021 (M)Law of Mass Action, Equilibrium Constant (Kc and Kp) and its Application
  27. 27224 mL of SO 2 ( g ) at 298 K and 1 atm is passed through 100 mL of 0 . 1 M NaOH solution. The non-volatile solute produced is dissolved in 26 Feb, 2021 (M)Vapour pressure and raoult's law
  28. 28Dichromate ion is treated with base, the oxidation number of Cr in the product formed is26 Feb, 2021 (M)Oxidation number
  29. 29A certain gas obeys P V m - b = RT . The value of Z P T is xb RT . The value of x is (Integer answer) ( Z : compressibility factor)26 Feb, 2021 (M)Gas laws and Ideal Gas Equation
  30. 30The number of significant figures in 50000 . 020 10 - 3 is26 Feb, 2021 (M)Significant Figures

Mathematics

  1. 1The maximum value of the term independent of t in the expansion of t x 1 5 + 1 - x 1 10 t 10 where x 0 , 1 is:26 Feb, 2021 (M)Terms of Binomial Expansion
  2. 2The rate of growth of bacteria in a culture is proportional to the number of bacteria present and the bacteria count is 1000 at initial time26 Feb, 2021 (M)Applications of DE
  3. 3Let R = { P , Q | P and Q are at the same distance from the origin } be a relation, then the equivalence class of 1 , - 1 is the set26 Feb, 2021 (M)Questions on Symmetric Transitive and Reflexive Properties
  4. 4The value of lim h 0 3 sin 6 + h - cos 6 + h 3 h 3 cos h - sin h is :26 Feb, 2021 (M)Trigonometric and Inverse Trigonometric limits
  5. 5The sum of the infinite series 1 + 2 3 + 7 3 2 + 12 3 3 + 17 3 4 + 22 3 5 + is equal to:26 Feb, 2021 (M)Arithmetic Geometric Progression
  6. 6In the circle given below, let O A = 1 unit, O B = 13 unit and P Q O B . Then, the area of the triangle P Q B (in square units) is :26 Feb, 2021 (M)line and circle
  7. 7The value of n = 1 100 n - 1 n e x - x d x , where x is the greatest integer x , is:26 Feb, 2021 (M)Properties of Periodic Functions
  8. 8If a and b are perpendicular, then a a a a b is equal to:26 Feb, 2021 (M)Vector Triple Product
  9. 9The value of - / 2 / 2 cos 2 x 1 + 3 x d x is:26 Feb, 2021 (M)Properties of Definite Integration
  10. 10If sin - 1 x a = cos - 1 x b = tan - 1 y c ; 0 x 1 , then the value of cos c a + b is:26 Feb, 2021 (M)Sum and difference of angles
  11. 11The number of seven digit integers with sum of the digits equal to 10 and formed by using the digits 1 , 2 and 3 only is:26 Feb, 2021 (M)Arrangement under Constraint
  12. 12Consider the three planes P 1 : 3 x + 15 y + 21 z = 9 P 2 : x - 3 y - z = 5 , and P 3 : 2 x + 10 y + 14 z = 5 Then, which one of the followi26 Feb, 2021 (M)Plane in Space
  13. 13Let A be a symmetric matrix of order 2 with integer entries. If the sum of the diagonal elements of A 2 is 1 , then the possible number of s26 Feb, 2021 (M)Symmetric & Skew Symmetric Matrices
  14. 14The maximum slope of the curve y = 1 2 x 4 - 5 x 3 + 18 x 2 - 19 x occurs at the point26 Feb, 2021 (M)Maxima Minima
  15. 15In an increasing geometric series, the sum of the second and the sixth term is 25 2 and the product of the third and fifth term is 25 . Then26 Feb, 2021 (M)Geometric Progression
  16. 16The value of a + 1 a + 2 a + 2 1 a + 2 a + 3 a + 3 1 a + 3 a + 4 a + 4 1 is26 Feb, 2021 (M)Expansion of Determinants
  17. 17A fair coin is tossed a fixed number of times. If the probability of getting 7 heads is equal to probability of getting 9 heads, then the pr26 Feb, 2021 (M)Bernoulli Trial and Binomial Distribution
  18. 18The intersection of three lines x - y = 0 , x + 2 y = 3 and 2 x + y = 6 is a/an26 Feb, 2021 (M)Coordinate System
  19. 19Let , 2 , 1 be a point on the plane which passes through the point 4 , - 2 , 2 . If the plane is perpendicular to the line joining the point26 Feb, 2021 (M)Plane in Space
  20. 20The area bounded by the lines y = x - 1 - 2 and is _____.26 Feb, 2021 (M)Area of Curve along axis
  21. 21The difference between degree and order of a differential equation that represents the family of curves given by y 2 = a x + a 2 , a 0 is __26 Feb, 2021 (M)Order and Degree
  22. 22The number of integral values of k for which the equation 3 sin x + 4 cos x = k + 1 has a solution, k R is _______.26 Feb, 2021 (M)Maximum and Minimum Values
  23. 23The number of solutions of the equation log 4 x - 1 = log 2 x - 3 is ______.26 Feb, 2021 (M)Logarithm
  24. 24If y = y x is the solution of the equation e sin y cos y d y d x + e sin y cos x = cos x , y 0 = 0 ; then 1 + y 6 + 3 2 y 3 + 1 2 y 4 is equ26 Feb, 2021 (M)Linear Differential Equation
  25. 25The value of the integral 0 sin 2 x d x is ________.26 Feb, 2021 (M)Properties of Definite Integration
  26. 26Let m , n N and gcd 2 , n = 1 . If 30 30 0 + 29 30 1 + . . + 2 30 28 + 1 30 29 = n . 2 m , then n + m is equal to _______. (Here n k = C k n26 Feb, 2021 (M)Sum of Series
  27. 27Let f be any function defined on R and let it satisfy the condition: f x - f y x - y 2 , x , y R . If f 0 = 1 , then :26 Feb, 2021 (M)Differentiability
  28. 28The sum of 162 t h power of the roots of the equation x 3 - 2 x 2 + 2 x - 1 = 0 is ______.26 Feb, 2021 (M)N degree equation
  29. 29If 3 cos 2 x = 3 - 1 cos x + 1 , then number of solutions of the given equation when x 0 , 2 is ________.26 Feb, 2021 (M)Solving Trigonometric Equation
  30. 30If 1 , 5 , 35 , 7 , 5 , 5 , 1 , , 7 and 2 , 1 , 2 are coplanar, then the sum of all possible values of is:26 Feb, 2021 (M)Algebra of Vectors

Physics

  1. 1Four identical solid spheres each of mass m and radius a are placed with their centres on the four corners of a square of side b . The momen26 Feb, 2021 (M)Moment of inertia of rigid bodies
  2. 2Given below are two statements : one is labelled as Assertion A and the other is labelled as Reason R . Assertion A : An electron microscope26 Feb, 2021 (M)Optical Instruments
  3. 3LED is constructed from G a - A s - P semiconducting material. The energy gap of this LED is 1 . 9 eV . Calculate the wavelength of light em26 Feb, 2021 (M)Special purpose diodes
  4. 4A planet revolving in elliptical orbit has : A. a constant velocity of revolution. B. has the least velocity when it is nearest to the sun. 26 Feb, 2021 (M)Kepler laws
  5. 5If 1 and 2 are the wavelengths of the third member of Lyman and first member of the Paschen series respectively, then the value of 1 : 2 is 26 Feb, 2021 (M)Atomic Spectrum
  6. 6In a typical combustion engine the workdone by a gas molecule is given by W = 2 e - x 2 k T , where x is the displacement, k is the Boltzman26 Feb, 2021 (M)Dimensions
  7. 7In a Young s double slit experiment two slits are separated by 2 mm and the screen is placed one meter away. When a light of wavelength 500 26 Feb, 2021 (M)Youngs Double Slit Experiment
  8. 8A large number of water drops, each of radius r , combine to have a drop of radius R . If the surface tension is T and mechanical equivalent26 Feb, 2021 (M)Surface tension
  9. 9If two similar springs each of spring constant K 1 are joined in series, the new spring constant and time period would be changed by a facto26 Feb, 2021 (M)Spring force
  10. 10The normal density of a material is and its bulk modulus of elasticity is K . The magnitude of increase in density of material, when a press26 Feb, 2021 (M)Bulk Modulus
  11. 11A short straight object of height 100 cm lies before the central axis of a spherical mirror whose focal length has absolute value f = 40 cm 26 Feb, 2021 (M)Mirror Formula, Reflection in Spherical Mirror
  12. 12Assume that a tunnel is dug along a chord of the earth, at a perpendicular distance R 2 from the earth s centre, where R is the radius of th26 Feb, 2021 (M)Applications of SHM
  13. 13Consider the combination of two capacitors C 1 and C 2 , with C 2 C 1 , when connected in parallel, the equivalent capacitance is 10 times t26 Feb, 2021 (M)Grouping of capacitors
  14. 14Five equal resistances are connected in a network as shown in figure. The net resistance between the points A and B is :26 Feb, 2021 (M)Wheatstone Bridge
  15. 15The temperature at the junction of two insulating sheets, having thermal resistances R 1 and R 2 as well as top and bottom temperatures 1 an26 Feb, 2021 (M)Conduction
  16. 16Find the gravitational force of attraction between the ring and sphere as shown in the diagram, where the plane of the ring is perpendicular26 Feb, 2021 (M)Gravitational field
  17. 17A particle is moving with uniform speed along the circumference of a circle of radius R under the action of a central fictitious force F whi26 Feb, 2021 (M)Equilibrium of Forces
  18. 18Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R. Assertion A : Body P having mass M mov26 Feb, 2021 (M)Collisions
  19. 19An alternating current is given by the equation i = i 1 sin t + i 2 cos t . The rms current will be:26 Feb, 2021 (M)Alternating Current, Voltage and Power
  20. 20Find the electric field at point P (as shown in figure) on the perpendicular bisector of a uniformly charged thin wire of length L carrying 26 Feb, 2021 (M)Electric Field and Electric Field Lines
  21. 21A boy pushes a box of mass 2 kg with a force F = 20 i ^ + 10 j ^ N on a frictionless surface. If the box was initially at rest, then _______26 Feb, 2021 (M)Uniform Motion
  22. 22In a series LCR resonant circuit, the quality factor is measured as 100 . If the inductance is increased by two fold and resistance is decre26 Feb, 2021 (M)AC Circuits
  23. 23A radiation is emitted by 1000 W bulb and it generates an electric field and magnetic field at P , placed at a distance of 2 m . The efficie26 Feb, 2021 (M)Electromagnetic Waves and Maxwell's equations
  24. 24The circuit contains two diodes each with a forward resistance of 50 and with infinite reverse resistance. If the battery voltage is 6 V , t26 Feb, 2021 (M)Diodes
  25. 25A container is divided into two chambers by a partition. The volume of first chamber is 4 . 5 litre and second chamber is 5 . 5 litre . The 26 Feb, 2021 (M)Calorimetry
  26. 26A person standing on a spring balance inside a stationary lift measures 60 kg . The weight of that person if the lift descends with uniform 26 Feb, 2021 (M)Motion Under Gravity
  27. 27The mass per unit length of a uniform wire is 0 . 135 g cm - 1 . A transverse wave of the form y = - 0 . 21 sin x + 30 t is produced in it, 26 Feb, 2021 (M)Basics of Mechanical Waves
  28. 28As shown in the figure, a block of mass 3 kg is kept on a horizontal rough surface of coefficient of friction 1 3 3 . The critical force to 26 Feb, 2021 (M)Frictional force
  29. 29The maximum and minimum amplitude of an amplitude modulated wave is 16 V and 8 V respectively. The modulation index for this amplitude modul26 Feb, 2021 (M)Modulation
  30. 30In an electrical circuit, a battery is connected to pass 20 C of charge through it in a certain given time. The potential difference between26 Feb, 2021 (M)Electric Potential and Potential Energy

Frequently Asked Questions

1.How many questions are in the JEE Main 2021 26th February Morning Shift paper?

This paper has 90 questions in total - 30 each from Chemistry, Mathematics, and Physics.

2.Can I practise questions from just one subject?

Yes. Use the Chemistry, Mathematics, and Physics tabs at the top of the page to jump directly to that subject's question set within this shift.

3.Is this the same paper for all students who appeared in the morning shift?

JEE Main uses different question sets across shifts and sessions to maintain exam integrity, so this page reflects the specific paper administered in the 26th February 2021 morning shift.

4.Where can I find the evening shift paper for the same date?

The JEE Main 2021 26th February Evening Shift paper is listed separately - you can switch to it from the "JEE Main Paper Wise PYQs" panel, under JEE Main 26th February 2021.

5.How is the JEE Main 2021 26th February Morning Shift paper structured?

The JEE Main 2021 26th February Morning Shift paper on MARKS has 90 questions, organised by subject:

  • Chemistry: 30 questions - 20 single-correct and 10 numerical-value.
  • Mathematics: 30 questions - 20 single-correct and 10 numerical-value.
  • Physics: 30 questions - 20 single-correct and 10 numerical-value.
6.How difficult is the JEE Main 2021 26th February Morning Shift paper?

Each question on MARKS carries a difficulty rating. Of the 90 rated questions in this paper, 35 (39%) are easy, 41 (46%) are medium and 14 (16%) are hard. Subject wise:

  • Chemistry: 16 easy, 13 medium, 1 hard
  • Mathematics: 8 easy, 13 medium, 9 hard
  • Physics: 11 easy, 15 medium, 4 hard
7.Which chapters were asked the most in the JEE Main 2021 26th February Morning Shift paper?

The chapters with the most questions in each subject were:

  • Chemistry: Chemical Bonding and Molecular Structure (2), General Organic Chemistry (2), and Haloalkanes and Haloarenes (2).
  • Mathematics: Definite Integration (3), Differential Equations (3), and Binomial Theorem (2).
  • Physics: Laws of Motion (3), Alternating Current (2), and Electrostatics (2).
8.Are there any out-of-syllabus questions in the JEE Main 2021 26th February Morning Shift paper?

Yes. 21 of the 90 questions in this paper are marked on MARKS as outside the current syllabus. You can still practise them for the concept, but they are a lower priority if you are short on time.

9.Where can I find the solutions for the JEE Main 2021 26th February Morning Shift paper?

Open any question on this page. Its page shows the correct answer and, where one is available, the worked solution. A downloadable PDF of the whole shift is coming soon.

10.How should I use the JEE Main 2021 26th February Morning Shift paper to check my preparation?

Set a timer, attempt the 90 questions as you would in the exam, and only then open the answers. Note which subjects and chapters cost you the most marks, and revise those first using the chapter-wise practice for JEE Main. Repeating this with other papers shows whether the same weak spots keep coming back.

11.Will the JEE Main 2021 26th February Morning Shift paper help me prepare for JEE Main 2027?

Yes. Every past paper shows the question styles and topics JEE Main has asked before, and a solved paper gives you a realistic benchmark for speed and accuracy. Use it along with the other papers to spot the chapters that keep returning.