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JEE Main 2021 26th August Evening Shift

Browse the complete Chemistry, Mathematics, and Physics question set from the JEE Main 2021 26th August 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%), 43 moderate (48%) and 16 tough (18%). That's a fairly typical mix for this exam. By subject: Physics 37% easy, 43% moderate, 20% tough; Chemistry 33% easy, 50% moderate, 17% tough; Mathematics 33% easy, 50% moderate, 17% tough.

Chemistry questions were spread across 23 chapters, with Coordination Compounds (3), General Organic Chemistry (3), and Chemical Bonding and Molecular Structure (2) carrying the most weight. Mathematics questions were spread across 23 chapters, with Complex Number (2), Definite Integration (2), and Hyperbola (2) carrying the most weight. Physics questions were spread across 24 chapters, with Mathematics in Physics (3), Current Electricity (2), and Magnetic Effects of Current (2) carrying the most weight.

Chemistry

  1. 1Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A): Barium carbonate i26 Aug, 2021 (E)Alkaline Earth Metals
  2. 2The Major Product in the above reaction is :26 Aug, 2021 (E)Preparation and Properties of Amides
  3. 3Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A) : Sucrose is a disa26 Aug, 2021 (E)Disaccharides and Polysaccharides
  4. 4Match List - I with List - II. List - I (Chemical Reaction) List - II (Reagent used) a CH 3 COOCH 2 CH 3 CH 3 CH 2 OH i CH 3 MgBr / H 3 O + 26 Aug, 2021 (E)Preparation and Properties of Esters
  5. 5Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A) : Heavy water is us26 Aug, 2021 (E)Chemical properties of heavy water
  6. 6The interaction energy of London forces between two particles is proportional to r x , where r is the distance between the particles. The va26 Aug, 2021 (E)Van Der Waals Forces, Hydrogen Bonding and Metallic Bonding
  7. 7The number of stereoisomers possible for 1 , 2 -dimethyl cyclopropane is:26 Aug, 2021 (E)Chemical reactions for aldehydes and ketones
  8. 8The class of drug to which chlordiazepoxide with above structure belongs is :26 Aug, 2021 (E)Modern periodic table
  9. 9The number of non-ionisable hydrogen atoms present in the final product obtained from the hydrolysis of PCl 5 is :26 Aug, 2021 (E)Phosphorus and Its Compounds
  10. 10Which one of the following phenols does not give colour when condensed with phthalic anhydride in presence of conc. H 2 SO 4 ?26 Aug, 2021 (E)Reactions of Phenol
  11. 11Consider the given reaction, the Product A is:26 Aug, 2021 (E)Quantitative analysis of organic compounds
  12. 12The sol given below with negatively charged colloidal particles is:26 Aug, 2021 (E)Properties of colloidal solution
  13. 13Arrange the following Cobalt complexes in the order of increasing Crystal Field Stabilization Energy (CFSE) value. Complexes: CoF 6 3 - A , 26 Aug, 2021 (E)Crystal Field Theory
  14. 14The bond order and magnetic behaviour of O 2 - ion are, respectively :26 Aug, 2021 (E)Molecular Orbital Theory
  15. 15Given below are two statements: Statement I : Sphalerite is a sulphide ore of zinc and copper glance is a sulphide ore of copper. Statement 26 Aug, 2021 (E)Concentration of the Ore
  16. 16Chalcogen group elements are :26 Aug, 2021 (E)Oxygen and Its Compounds
  17. 17Indicate the complex/complex ion which did not show any geometrical isomerism :26 Aug, 2021 (E)Isomerism of coordination compounds
  18. 18Which one of the following compounds is not aromatic?26 Aug, 2021 (E)Isomerism of Organic Compounds
  19. 19Consider the given reaction, Identify X and Y :26 Aug, 2021 (E)Reactions of aromatic compounds
  20. 20Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason ( R ) Assertion (A) : Photochemical sm26 Aug, 2021 (E)Air Pollution
  21. 21For the galvanic cell, Zn ( s ) + Cu 2 + ( 0 . 02 M ) Zn 2 + ( 0 . 04 M ) + Cu ( s ) E cell = 10 - 2 V (Nearest integer) Use : E 0 Cu / Cu 226 Aug, 2021 (E)Cells and Electrode Potential, Nernst Equation
  22. 22For water vap H = 41 kJ mol - 1 at 373 K and 1 bar pressure. Assuming that water vapour is an ideal gas that occupies a much larger volume t26 Aug, 2021 (E)Dual Behaviour of Matter and Heisenberg Uncertainty Principle
  23. 23A chloro compound A . (i) forms aldehydes on ozonolysis followed by the hydrolysis. (ii) when vaporized completely 1 . 53 g of A , gives 44826 Aug, 2021 (E)Quantitative analysis of organic compounds
  24. 2483 g of ethylene glycol dissolved in 625 g of water. The freezing point of the solution is ..... K. (Nearest integer) [Use : Molal Freezing 26 Aug, 2021 (E)Colligative Properties and Abnormal Molecular Masses
  25. 25In the sulphur estimation, 0 . 471 g of an organic compound gave 1 . 44 g of barium sulfate. The percentage of sulphur in the compound is. (26 Aug, 2021 (E)Law of Mass Action, Equilibrium Constant (Kc and Kp) and its Application
  26. 26100 mL of Na 3 PO 4 solution contains 3 . 45 g of sodium. The molarity of the solution is ..... 10 - 2 mol L - 1 . (Nearest integer) [Atomic26 Aug, 2021 (E)Concentration terms
  27. 27A metal surface is exposed to 500 nm radiation. The threshold frequency of the metal for photoelectric current is 4 . 3 10 14 Hz . The veloc26 Aug, 2021 (E)Drugs and It's Classification
  28. 28The overall stability constant of the complex ion Cu NH 3 4 2 + is 2 . 1 10 13 . The overall dissociation constant is y 10 - 14 . Then y is 26 Aug, 2021 (E)Stability of complex ion
  29. 29The reaction rate for the reaction PtCl 4 2 - + H 2 O Pt H 2 O Cl 3 - + Cl - was measured as a function of concentrations of different speci26 Aug, 2021 (E)Law of Mass Action, Equilibrium Constant (Kc and Kp) and its Application
  30. 30The equilibrium constant K c at 298 K for the reaction A + B C + D is 100 . Starting with an equimolar solution with concentrations of A , B26 Aug, 2021 (E)First Law and Basic Fundamentals of Thermodynamics

Mathematics

  1. 1A 10 inches long pencil A B with mid point C and a small eraser P are placed on the horizontal top of a table such that P C = 5 inches and P26 Aug, 2021 (E)Sum and Difference & Multiple angle Formula
  2. 2The point P ( - 2 6 , 3 ) lies on the hyperbola x 2 a 2 - y 2 b 2 = 1 having eccentricity 5 2 . If the tangent and normal at to the hyperbol26 Aug, 2021 (E)Normal to hyperbola
  3. 3Let P be the plane passing through the point ( 1 , 2 , 3 ) and the line of intersection of the planes r ( i ^ + j ^ + 4 k ^ ) = 16 r ( - i ^26 Aug, 2021 (E)Plane in Space
  4. 4The locus of the mid points of the chords of the hyperbola x 2 - y 2 = 4 , which touch the parabola y 2 = 8 x , is :26 Aug, 2021 (E)Chord with given Middle Point
  5. 5If r = 1 50 tan - 1 1 2 r 2 = p , then the value of tan p is :26 Aug, 2021 (E)Infinite Series
  6. 6The value of 2 sin 8 sin 2 8 sin 3 8 sin 5 8 sin 6 8 sin 7 8 is :26 Aug, 2021 (E)Transformation Formulas
  7. 7A fair die is tossed until six is obtained on it. Let X be the number of required tosses, then the conditional probability P ( X 5 X 2 ) is 26 Aug, 2021 (E)Conditional Probability and Multiplication Theorem
  8. 8Let A = 1 0 0 0 1 1 1 0 0 . Then A 2025 - A 2020 is equal to26 Aug, 2021 (E)Product of Matrices
  9. 9Consider the two statements : S 1 : ( p q ) ( ~ q p ) is a tautology. S 2 : ( p ~ q ) ( ~ p q ) is a fallacy. Then :26 Aug, 2021 (E)Mathematical Reasoning
  10. 10The value of - 2 2 1 + sin 2 x 1 + sin x d x is :26 Aug, 2021 (E)Properties of Definite Integration
  11. 11Let [ t ] denote the greatest integer less than or equal to t . Let f ( x ) = x - [ x ] , g ( x ) = 1 - x + [ x ] , and h ( x ) = min { f ( 26 Aug, 2021 (E)Continuity
  12. 12The local maximum value of the function, f x = 2 x x 2 , x 0 , is26 Aug, 2021 (E)Maxima Minima
  13. 13A hall has a square floor of dimension 10 m 10 m (see the figure) and vertical walls. If the angle G P H between the diagonals A G and B H i26 Aug, 2021 (E)Product of 2 vectors
  14. 14Two fair dice are thrown. The numbers on them are taken as and , and a system of linear equations x + y + z = 5 x + 2 y + 3 z = x + 3 y + z 26 Aug, 2021 (E)System of Linear Equations
  15. 15The domain of the function cosec - 1 1 + x x is :26 Aug, 2021 (E)Domain
  16. 16If ( 3 + i ) 100 = 2 99 ( p + i q ) , then p and q are roots of the equation :26 Aug, 2021 (E)Euler Form and De Moivres Theorem
  17. 17If the value of the integral 0 5 x + [ x ] e x - [ x ] d x = e - 1 + , where , R , 5 + 6 = 0 , and x denotes the greatest integer less than 26 Aug, 2021 (E)Properties of Definite Integration
  18. 18A circle C touches the line x = 2 y at the point 2 , 1 and intersects the circle C 1 : x 2 + y 2 + 2 y - 5 = 0 at two points P and Q such th26 Aug, 2021 (E)Family of Circle
  19. 19Let y ( x ) be the solution of the differential equation 2 x 2 d y + e y - 2 x d x = 0 , x 0 . If y ( e ) = 1 , then y ( 1 ) is equal to:26 Aug, 2021 (E)Linear Differential Equation
  20. 20lim x 2 n = 1 9 x n ( n + 1 ) x 2 + 2 ( 2 n + 1 ) x + 4 is equal to :26 Aug, 2021 (E)Algebraic and Rational Limits
  21. 21Let Q be the foot of the perpendicular from the point P ( 7 , - 2 , 13 ) on the plane containing the lines x + 1 6 = y - 1 7 = z - 3 8 and x26 Aug, 2021 (E)Line and Plane
  22. 22Let a and b respectively be the points of local maximum and local minimum of the function f ( x ) = 2 x 3 - 3 x 2 - 12 x . If A is the total26 Aug, 2021 (E)Area bounded by Miscellaneous Curves
  23. 23Let A be a 3 3 real matrix. If det ( 2 Adj ( 2 Adj ( Adj ( 2 A ) ) ) ) = 2 41 , then the value of det A 2 equals ______.26 Aug, 2021 (E)Adjoint and its Properties
  24. 24Let n k denote C k n and n k = n k , if 0 k n 0 , otherwise . If A k = i = 0 9 9 i 12 12 - k + i + i = 0 8 8 i 13 13 - k + i and A 4 - A 3 =26 Aug, 2021 (E)Series involving Product of Coefficients
  25. 25Let the mean and variance of four numbers 3 , 7 , x and y ( x y ) be 5 and 10 respectively. Then the mean of four numbers 3 + 2 x , 7 + 2 y 26 Aug, 2021 (E)Measures of Dispersion
  26. 26Let a 1 , a 2 , , a 10 be an A . P . with common difference - 3 and b 1 , b 2 , , b 10 be a G . P . with common ratio 2 . Let c k = a k + b 26 Aug, 2021 (E)Mixed Question on AP and GP
  27. 27The least positive integer n such that ( 2 i ) n ( 1 - i ) n - 2 , i = - 1 , is a positive integer, is ______.26 Aug, 2021 (E)Power of iota
  28. 28The sum of all 3 -digit numbers less than or equal to 500 , that are formed without using the digit 1 and they all are multiple of 11 , is _26 Aug, 2021 (E)Summation of Numbers
  29. 29If the projection of the vector i ^ + 2 j ^ + k ^ on the sum of the two vectors 2 i ^ + 4 j ^ - 5 k ^ and - i ^ + 2 j ^ + 3 k ^ is 1 , then 26 Aug, 2021 (E)Product of 2 vectors
  30. 30Let 0 be in R . If and are the roots of the equation x 2 - x + 2 = 0 , and and are the roots of the equation 3 x 2 - 10 x + 27 = 0 , then is26 Aug, 2021 (E)Relation between Roots and Coefficients

Physics

  1. 1Match List - I with List - II : List - I List - II a Magnetic induction i ML 2 T - 2 A - 1 b Magnetic flux ii M 0 L - 1 A c Magnetic permeab26 Aug, 2021 (E)Dimensions
  2. 2The de-Broglie wavelength of a particle having kinetic energy E is . How much extra energy must be given to this particle so that the de-Bro26 Aug, 2021 (E)Matter Waves
  3. 3A cylindrical container of volume 4 . 0 10 - 3 m 3 contains one mole of hydrogen and two moles of carbon dioxide. Assume the temperature of 26 Aug, 2021 (E)Pressure and Energy of gas
  4. 4If the length of the pendulum in pendulum clock increases by 0 . 1 % , then the error in time per day is:26 Aug, 2021 (E)Errors of Measurement
  5. 5An electric bulb of 500 W at 100 V is used in a circuit having a 200 V supply. Calculate the resistance R to be connected in series with the26 Aug, 2021 (E)Electric Power and Heating Effect of Current
  6. 6The temperature of equal masses of three different liquids x , y and z are 10 C , 20 C and 30 C respectively. The temperature of mixture whe26 Aug, 2021 (E)Calorimetry
  7. 7In the given circuit the AC source has = 100 rad s - 1 . Considering the inductor and capacitor to be ideal, what will be the current I flow26 Aug, 2021 (E)Alternating Current, Voltage and Power
  8. 8A particle of mass m is suspended from a ceiling through a string of length L . The particle moves in a horizontal circle of radius r such t26 Aug, 2021 (E)Uniform Circular Motion
  9. 9A parallel-plate capacitor with plate area A has separation d between the plates. Two dielectric slabs of dielectric constant K 1 and K 2 of26 Aug, 2021 (E)Capacitors with Dielectric
  10. 10A refrigerator consumes an average 35 W power to operate between temperature - 10 C to 25 C . If there is no loss of energy then how much av26 Aug, 2021 (E)Heat Engine, Refrigerator and Second Law of Thermodynamics
  11. 11The angle between vector ( A ) and ( A - B ) is :26 Aug, 2021 (E)Addition and Subtraction of Vectors
  12. 12The solid cylinder of length 80 cm and mass M has a radius of 20 cm . Calculate the density of the material used if the moment of inertia of26 Aug, 2021 (E)Moment of inertia of rigid bodies
  13. 13A light beam is described by E = 800 sin t - x c . An electron is allowed to move normal to the propagation of light beam with a speed of 3 26 Aug, 2021 (E)Electromagnetic Waves and Maxwell's equations
  14. 14If you are provided a set of resistances, 2 , 4 , 6 and 8 . Connect these resistances to obtain an equivalent resistance of 46 3 .26 Aug, 2021 (E)Combination of Resistances
  15. 15Four NOR gates are connected as shown in figure. The truth table for the given figure is :26 Aug, 2021 (E)Logic gates
  16. 16Two blocks of masses 3 kg and 5 kg are connected by a metal wire going over a smooth pulley. The breaking stress of the metal is 24 10 2 N m26 Aug, 2021 (E)Young's Modulus and Breaking Stres
  17. 17A bomb is dropped by a fighter plane flying horizontally. To an observer sitting in the plane, the trajectory of the bomb is a :26 Aug, 2021 (E)Projectile motion
  18. 18A transmitting antenna at top of a tower has a height of 50 m , and the height of receiving antenna is, 80 m . What is the range of communic26 Aug, 2021 (E)Propagation of EM Waves
  19. 19The two thin coaxial rings, each of radius a and having charges + Q and - Q respectively are separated by a distance of s . The potential di26 Aug, 2021 (E)Electric Potential and Potential Energy
  20. 20At time t = 0 , a material is composed of two radioactive atoms A and B , where N A ( 0 ) = 2 N B ( 0 ) The decay constant of both kind of r26 Aug, 2021 (E)Radioactivity
  21. 21A source of light is placed in front of a screen. The intensity of light on the screen is I . Two Polaroids P 1 and P 2 are so placed in bet26 Aug, 2021 (E)Polarization of Light
  22. 22For the given circuit, the power across zener diode is _____ mW .26 Aug, 2021 (E)Diodes
  23. 23Two waves are simultaneously passing through a string and their equations are : y 1 = A 1 sin k ( x - v t ) , y 2 = A 2 sin k x - v t + x 0 26 Aug, 2021 (E)Basics of Mechanical Waves
  24. 24An object is placed at a distance of 12 cm from a convex lens. A convex mirror of focal length 15 cm is placed on another side of the lens a26 Aug, 2021 (E)Combination of Lens and Mirrors
  25. 25If the maximum value of accelerating potential provided by a radio frequency oscillator is 12 kV . The number of revolution made by a proton26 Aug, 2021 (E)Motion of Charged Particle in Magnetic Field
  26. 26A circular coil of radius 8 . 0 cm and 20 turns is rotated about its vertical diameter with an angular speed of 50 rad s - 1 in a uniform ho26 Aug, 2021 (E)Motional and Rotational EMF
  27. 27The coefficient of static friction between two blocks is 0 . 5 and the table is smooth. The maximum horizontal force that can be applied to 26 Aug, 2021 (E)Frictional force
  28. 28The acceleration due to gravity is found up to an accuracy of 4 % on a planet. The energy supplied to a simple pendulum of known mass m to u26 Aug, 2021 (E)Errors of Measurement
  29. 29A coil in the shape of an equilateral triangle of side 10 cm lies in a vertical plane between the pole pieces of permanent magnet producing 26 Aug, 2021 (E)Force and Torque on Current Carrying Conductor
  30. 30Two simple harmonic motions are represented by the equations x 1 = 5 sin 2 t + 4 and x 2 = 5 2 ( sin 2 t + cos 2 t ) . The amplitude of the 26 Aug, 2021 (E)Simple Harmonic Motion

Frequently Asked Questions

1.How many questions are in the JEE Main 2021 26th August 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 26th August 2021 evening shift.

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

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

5.What is the structure of the JEE Main 2021 26th August Evening Shift paper?

The JEE Main 2021 26th August 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.What is the difficulty level of the JEE Main 2021 26th August Evening Shift paper?

Each question on MARKS carries a difficulty rating. Of the 90 rated questions in this paper, 31 (34%) are easy, 43 (48%) are medium and 16 (18%) are hard. Subject wise:

  • Chemistry: 10 easy, 15 medium, 5 hard
  • Mathematics: 10 easy, 15 medium, 5 hard
  • Physics: 11 easy, 13 medium, 6 hard
7.Which chapters had the most questions in the JEE Main 2021 26th August Evening Shift paper?

The chapters with the most questions in each subject were:

  • Chemistry: Coordination Compounds (3), General Organic Chemistry (3), and Chemical Bonding and Molecular Structure (2).
  • Mathematics: Complex Number (2), Definite Integration (2), and Hyperbola (2).
  • Physics: Mathematics in Physics (3), Current Electricity (2), and Magnetic Effects of Current (2).
8.Are there any out-of-syllabus questions in the JEE Main 2021 26th August Evening Shift paper?

Yes. 20 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 August 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 26th August 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 26th August 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.