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JEE Main 2021 25th February Evening Shift

Browse the complete Chemistry, Mathematics, and Physics question set from the JEE Main 2021 25th February Evening 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 - 31 easy (34%), 46 moderate (51%) and 13 tough (14%). That's a fairly typical mix for this exam. By subject: Physics 43% easy, 50% moderate, 7% tough; Chemistry 43% easy, 43% moderate, 13% tough; Mathematics 17% easy, 60% moderate, 23% tough.

Chemistry questions were spread across 23 chapters, with Coordination Compounds (3), Hydrocarbons (3), and Carboxylic Acid Derivatives (2) carrying the most weight. Mathematics questions were spread across 22 chapters, with Definite Integration (3), Application of Derivatives (2), and Determinants (2) carrying the most weight. Physics questions were spread across 21 chapters, with Electrostatics (4), Oscillations (3), and Alternating Current (2) carrying the most weight.

Chemistry

  1. 1The solubility of Ca OH 2 in water is : [Given : The solubility product of Ca OH 2 in water = 5 . 5 10 - 6 ]25 Feb, 2021 (E)Solubility
  2. 2The major components of German Silver are :25 Feb, 2021 (E)Properties of D-block elements
  3. 3Which of the following is correct structure of -anomer of maltose?25 Feb, 2021 (E)Disaccharides and Polysaccharides
  4. 4The method used for the purification of Indium is:25 Feb, 2021 (E)Refining of Crude Metal
  5. 5Which of the following compound is added to the sodium extract before addition of silver nitrate for testing of halogens?25 Feb, 2021 (E)Qualitative analysis of organic compounds
  6. 6Correct statement about the given chemical reaction is25 Feb, 2021 (E)Reactions of aromatic compounds
  7. 7Carbylamine test is used to detect the presence of primary amino group in an organic compound. Which of the following compound is formed whe25 Feb, 2021 (E)Preparation and Properties of Isocyanides
  8. 8The correct order of bond dissociation enthalpy of halogens is:25 Feb, 2021 (E)Halogens and Its Compounds
  9. 9The major product of the following reaction is : CH 3 CH 2 CH = CH 2 Rh catalyst H 2 / CO25 Feb, 2021 (E)Method of preparation for Aldehydes
  10. 10Which among the following species has unequal bond lengths?25 Feb, 2021 (E)Hybridisation and VSEPR Theory
  11. 11Given below are two statements: Statement I : and forms of sulphur can change reversibly between themselves with slow heating or slow coolin25 Feb, 2021 (E)Sulphur and Its Compounds
  12. 12Which one of the following statements is FALSE for hydrophilic sols?25 Feb, 2021 (E)Colloids
  13. 13What is X in the given reaction?25 Feb, 2021 (E)Reaction Involving Cleavage of -OH Group
  14. 14Given below are two statements: Statement I: The pH of rain water is normally ~ 5 . 6 . Statement II : If the pH of rain water drops below 525 Feb, 2021 (E)Air Pollution
  15. 15Water does not produce CO on reacting with :25 Feb, 2021 (E)Preparation and Properties of Water
  16. 16The major product of the following reaction is :25 Feb, 2021 (E)Reactions of aromatic compounds
  17. 17In which of the following order the given complex ions are arranged correctly with respect to their decreasing spin only magnetic moment? (i25 Feb, 2021 (E)Crystal Field Theory
  18. 18Given below are two statements: Statement I : The identification of Ni 2 + is carried out by dimethyl glyoxime in the presence of NH 4 OH . 25 Feb, 2021 (E)Terminology of coordination compounds
  19. 19The correct sequence of reagents used in the preparation of 4 -bromo- 2 -nitroethylbenzene from benzene is :25 Feb, 2021 (E)Reactions of aromatic compounds
  20. 20The correct order of acid character of the following compounds is :25 Feb, 2021 (E)Electron displacement effects
  21. 21If a compound AB dissociates to the extent of 75 % in an aqueous solution, the molality of the solution which shows a 2 . 5 K rise in the bo25 Feb, 2021 (E)Colligative Properties and Abnormal Molecular Masses
  22. 22The number of compound/s given below which contain/s - COOH group is ___ . (Integer answer) (A) Sulphanilic acid (B) Picric acid (C) Aspirin25 Feb, 2021 (E)Preparation and Properties of Carboxylic Acids
  23. 23Five moles of an ideal gas at 293 K is expanded isothermally from an initial pressure of 2 . 1 MPa to 1 . 3 MPa against at constant external25 Feb, 2021 (E)First Law and Basic Fundamentals of Thermodynamics
  24. 24The unit cell of copper corresponds to a face centered cube of edge length 3 . 596 with one copper atom at each lattice point. The calculate25 Feb, 2021 (E)Cubic system
  25. 25Among the following, number of metal/s which can be used as electrodes in the photoelectric cell is ___ . (Integer answer) (A) Li (B) Na (C)25 Feb, 2021 (E)General Characteristics of Alkali Metals
  26. 26The spin only magnetic moment of a divalent ion in aqueous solution (atomic number 29 ) is ___ BM .25 Feb, 2021 (E)Crystal Field Theory
  27. 27Consider titration of NaOH solution versus 1 . 25 M oxalic acid solution. At the end point following burette readings were obtained. (i) 4 .25 Feb, 2021 (E)Equivalence concept
  28. 28The rate constant of a reaction increases by five times on increase in temperature from 27 C to 52 C . The value of activation energy in kJm25 Feb, 2021 (E)Arrhenius theory
  29. 29Copper reduces NO 3 - into NO and NO 2 depending upon the concentration of HNO 3 in solution. (Assuming fixed Cu 2 + and P NO = P NO 2 ), th25 Feb, 2021 (E)Cells and Electrode Potential, Nernst Equation
  30. 30Electromagnetic radiation of wavelength 663 nm is just sufficient to ionise the atom of metal A . The ionization energy of metal A in kJ mol25 Feb, 2021 (E)Dual Behaviour of Matter and Heisenberg Uncertainty Principle

Mathematics

  1. 1A function f ( x ) is given by f x = 5 x 5 x + 5 , then the sum of the series f 1 20 + f 2 20 + f 3 20 + + f 39 20 is equal to:25 Feb, 2021 (E)Functional Equation
  2. 2Let A be a 3 3 matrix with det A = 4 . Let R i denote the i t h row of A . If a matrix B is obtained by performing the operation R 2 2 R 2 +25 Feb, 2021 (E)Miscellaneous
  3. 3Let x denote the total number of one-one functions from a set A with 3 elements to a set B with 5 elements and y denote the total number of 25 Feb, 2021 (E)Types of Function (Mapping)
  4. 4If for the matrix, A = 1 - , A A T = I 2 , then the value of 4 + 4 is :25 Feb, 2021 (E)Product of Matrices
  5. 5If I n = 4 2 cot n x d x , then25 Feb, 2021 (E)Definite Integration by Parts
  6. 6The integral e 3 log e 2 x + 5 e 2 log e 2 x e 4 log e x + 5 e 3 log e x - 7 e 2 log e x d x , x 0 , is equal to (where c is a constant of i25 Feb, 2021 (E)Integration by Substitution
  7. 7The minimum value of f x = a a x + a 1 - a x , where a , x R and a 0 , is equal to:25 Feb, 2021 (E)Inequalities
  8. 8If 0 x , y and cos x + cos y - cos x + y = 3 2 , then sin x + cos y is equal to:25 Feb, 2021 (E)Solving Trigonometric Equation
  9. 9If the curve x 2 + 2 y 2 = 2 intersects the line x + y = 1 at two points P and Q , then the angle subtended by the line segment P Q at the o25 Feb, 2021 (E)Equation of Ellipse
  10. 10A plane passes through the points A 1 , 2 , 3 , B 2 , 3 , 1 and C 2 , 4 , 2 . If O is the origin and P is 2 , - 1 , 1 , then the projection 25 Feb, 2021 (E)Plane in Space
  11. 11cosec 2 cot - 1 5 + cos - 1 4 5 is equal to:25 Feb, 2021 (E)Sum and difference of angles
  12. 12In a group of 400 people, 160 are smokers and non-vegetarian; 100 are smokers and vegetarian and the remaining 140 are non-smokers and veget25 Feb, 2021 (E)Baye's Theorem
  13. 13The shortest distance between the line x - y = 1 and the curve x 2 = 2 y is:25 Feb, 2021 (E)Tangent Normal
  14. 14Let and be the roots of x 2 - 6 x - 2 = 0 . If a n = n - n for n 1 , then the value of a 10 - 2 a 8 3 a 9 is:25 Feb, 2021 (E)Relation between Roots and Coefficients
  15. 15The contrapositive of the statement If you will work, you will earn money is:25 Feb, 2021 (E)Mathematical Reasoning
  16. 16The following system of linear equations 2 x + 3 y + 2 z = 9 3 x + 2 y + 2 z = 9 x - y + 4 z = 825 Feb, 2021 (E)System of Linear Equations
  17. 17A line l passing through origin is perpendicular to the lines l 1 : r = 3 + t i ^ + - 1 + 2 t j ^ + 4 + 2 t k ^ l 2 : r = 3 + 2 s i ^ + 3 + 25 Feb, 2021 (E)Line in Space
  18. 18If the curve, y = y x represented by the solution of the differential equation 2 x y 2 - y d x + x d y = 0 , passes through the intersection25 Feb, 2021 (E)Exact Forms
  19. 19The value of - 2 2 3 x 2 - 3 x - 6 d x is25 Feb, 2021 (E)Properties of Definite Integration
  20. 20Let a = i ^ + j ^ + 3 k ^ and b = 3 i ^ - j ^ + k ^ . If the area of the parallelogram whose adjacent sides are represented by the vectors a25 Feb, 2021 (E)Product of 2 vectors
  21. 21If the curves x = y 4 and x y = k cut at right angles, then 4 k 6 is equal to ___ .25 Feb, 2021 (E)Tangent Normal
  22. 22If lim x 0 a x - e 4 x - 1 a x e 4 x - 1 exists and is equal to b , then the value of a - 2 b is ___ .25 Feb, 2021 (E)Exponential and logarithmic limits
  23. 23The total number of two digit numbers ' n ' , such that 3 n + 7 n is a multiple of 10 , is ___ .25 Feb, 2021 (E)Selection of one or more item
  24. 24If the remainder when x is divided by 4 is 3 , then the remainder when 2020 + x 2022 is divided by 8 is ___ .25 Feb, 2021 (E)Remainder and Divisibility Problems
  25. 25A function f is defined on [ - 3 , 3 ] as f x = min | x | , 2 - x 2 , - 2 x 2 [ | x | ] , 2 | x | 3 where [ x ] denotes the greatest integer25 Feb, 2021 (E)Differentiability
  26. 26lim n 1 n + n n + 1 2 + n n + 2 2 + + n 2 n - 1 2 is equal to25 Feb, 2021 (E)Definite as Limit of Sum
  27. 27A hyperbola passes through the foci of the ellipse x 2 25 + y 2 16 = 1 and its transverse and conjugate axes coincide with major and minor a25 Feb, 2021 (E)Mixed Questions of Ellipse and Hyperbola
  28. 28A line is a common tangent to the circle x - 3 2 + y 2 = 9 and the parabola y 2 = 4 x . If the two points of contact a , b and c , d are dis25 Feb, 2021 (E)Common Tangent
  29. 29Let A be a set of all 4 -digit natural numbers whose exactly one digit is 7 . Then the probability that a randomly chosen element of A leave25 Feb, 2021 (E)Classical Definition of Probability
  30. 30If , R are such that 1 - 2 i (here i 2 = - 1 ) is a root of z 2 + z + = 0 , then - is equal to:25 Feb, 2021 (E)Relation between Roots and Coefficients

Physics

  1. 1Match List I with List II. List I List II (a) Rectifier (i) Used either for stepping up or stepping down the A.C. voltage (b) Stabilizer (ii25 Feb, 2021 (E)Alternating Current, Voltage and Power
  2. 2Two identical springs of spring constant 2 k are attached to a block of mass m and to fixed support (see figure). When the mass is displaced25 Feb, 2021 (E)Applications of SHM
  3. 3A sphere of radius a and mass m rolls along a horizontal plane with constant speed v 0 . It encounters an inclined plane at angle and climbs25 Feb, 2021 (E)Angular momentum and Angular impulse
  4. 4An L . C . R . circuit contains resistance of 110 and a supply of 220 V at 300 rad s - 1 angular frequency. If only capacitance is removed f25 Feb, 2021 (E)AC Circuits
  5. 5The point A moves with a uniform speed along the circumference of a circle of radius 0 . 36 m and covers 30 in 0 . 1 s . The perpendicular p25 Feb, 2021 (E)Simple Harmonic Motion
  6. 6In a ferromagnetic material, below the curie temperature, a domain is defined as:25 Feb, 2021 (E)Magnetic Materials and their Properties
  7. 7An electron of mass m e and a proton of mass m p = 1836 m e are moving with the same speed. The ratio of their de Broglie wavelength e l e c25 Feb, 2021 (E)Matter Waves
  8. 8An electron with kinetic energy K 1 enters between parallel plates of a capacitor at an angle with the plates. It leaves the plates at angle25 Feb, 2021 (E)Motion of Charged Particle in Magnetic Field
  9. 9Consider the diffraction pattern obtained from the sunlight incident on a pinhole of diameter 0 . 1 m . If the diameter of the pinhole is sl25 Feb, 2021 (E)Diffraction of Light
  10. 10Given below are two statements: Statement I: In a diatomic molecule, the rotational energy at a given temperature obeys Maxwell s distributi25 Feb, 2021 (E)Pressure and Energy of gas
  11. 11The truth table for the following logic circuit is :25 Feb, 2021 (E)Logic gates
  12. 12Y = A sin t + 0 is the time-displacement equation of a S H M . At t = 0 the displacement of the particle is Y = A 2 and it is moving along n25 Feb, 2021 (E)Simple Harmonic Motion
  13. 13If e is the electronic charge, c is the speed of light in free space and h is Planck s constant, the quantity 1 4 0 e 2 h c has dimensions o25 Feb, 2021 (E)Dimensions
  14. 14Thermodynamic process is shown below on a P - V diagram for one mole of an ideal gas. If V 2 = 2 V 1 , then the ratio of temperature T 2 T 125 Feb, 2021 (E)Thermodynamic Processes
  15. 15The stopping potential for electrons emitted from a photosensitive surface illuminated by light of wavelength 491 nm is 0 . 710 V . When the25 Feb, 2021 (E)Photoelectric Effect
  16. 16If a message signal of frequency f m is amplitude modulated with a carrier signal of frequency f c and radiated through an antenna, the wave25 Feb, 2021 (E)Modulation
  17. 17For extrinsic semiconductors; when doping level is increased;25 Feb, 2021 (E)Semiconductors
  18. 18A stone is dropped from the top of a building. When it crosses a point 5 m below the top, another stone starts to fall from a point 25 m bel25 Feb, 2021 (E)Uniform Motion
  19. 19The wavelength of the photon emitted by a hydrogen atom when an electron makes a transition from n = 2 to n = 1 state is:25 Feb, 2021 (E)Atomic Spectrum
  20. 20A charge q is placed at one corner of a cube as shown in figure. The flux of electrostatic field E through the shaded area is:25 Feb, 2021 (E)Electric Flux and Gauss Law
  21. 21A reversible heat engine converts one-fourth of the heat input into work. When the temperature of the sink is reduced by 52 K , its efficien25 Feb, 2021 (E)Heat Engine, Refrigerator and Second Law of Thermodynamics
  22. 22A current of 6 A enters one corner P of an equilateral triangle P Q R having 3 wires of resistance 2 each and leaves by the corner R . The c25 Feb, 2021 (E)Combination of Resistances
  23. 23The peak electric field produced by the radiation coming from the 8 W bulb at a distance of 10 m is x 10 0 c V m - 1 . The efficiency of the25 Feb, 2021 (E)Electric Field and Electric Field Lines
  24. 24The initial velocity v i required to project a body vertically upward from the surface of the earth to reach a height of 10 R , where R is t25 Feb, 2021 (E)Gravitational potential and Potential Energy
  25. 25Two particles having masses 4 g and 16 g respectively are moving with equal kinetic energies. The ratio of the magnitudes of their linear mo25 Feb, 2021 (E)Energy
  26. 26Two small spheres each of mass 10 mg are suspended from a point by threads 0 . 5 m long. They are equally charged and repel each other to a 25 Feb, 2021 (E)Electric Field and Electric Field Lines
  27. 27The percentage increase in the speed of transverse waves produced in a stretched string if the tension is increased by 4 % , will be ___ % .25 Feb, 2021 (E)Basics of Mechanical Waves
  28. 28The wavelength of an X-ray beam is 10 . The mass of a fictitious particle having the same energy as that of the X-ray photons is x 3 h kg . 25 Feb, 2021 (E)X-Rays
  29. 29Two identical conducting spheres with negligible volume have 2 . 1 nC and - 0 . 1 nC charges, respectively. They are brought into contact an25 Feb, 2021 (E)Electric Charge and Coulomb's law
  30. 30If P Q = Q P , the angle between P and Q is 0 360 . The value of will be ___ .25 Feb, 2021 (E)Addition and Subtraction of Vectors

Frequently Asked Questions

1.How many questions are in the JEE Main 2021 25th February Evening 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 evening 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 25th February 2021 evening shift.

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

The JEE Main 2021 25th February Morning Shift paper is listed separately - you can switch to it from the "JEE Main Paper Wise PYQs" panel, under JEE Main 25th February 2021.

5.How is the JEE Main 2021 25th February Evening Shift paper structured?

The JEE Main 2021 25th February Evening 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 25th February Evening Shift paper?

Each question on MARKS carries a difficulty rating. Of the 90 rated questions in this paper, 31 (34%) are easy, 46 (51%) are medium and 13 (14%) are hard. Subject wise:

  • Chemistry: 13 easy, 13 medium, 4 hard
  • Mathematics: 5 easy, 18 medium, 7 hard
  • Physics: 13 easy, 15 medium, 2 hard
7.Which chapters were asked the most in the JEE Main 2021 25th February Evening Shift paper?

The chapters with the most questions in each subject were:

  • Chemistry: Coordination Compounds (3), Hydrocarbons (3), and Carboxylic Acid Derivatives (2).
  • Mathematics: Definite Integration (3), Application of Derivatives (2), and Determinants (2).
  • Physics: Electrostatics (4), Oscillations (3), and Alternating Current (2).
8.Are there any out-of-syllabus questions in the JEE Main 2021 25th February Evening Shift paper?

Yes. 19 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 25th February Evening 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 25th February Evening 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 25th February Evening 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.