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JEE Main 2012 26th May Online

Browse the complete Chemistry, Mathematics, and Physics question set from the JEE Main 2012 26th May Online 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 paper as a PDF.

This paper has 90 questions in total - 27 easy (30%), 45 moderate (50%) and 18 tough (20%). That's a fairly typical mix for this exam. By subject: Physics 30% easy, 47% moderate, 23% tough; Chemistry 37% easy, 50% moderate, 13% tough; Mathematics 23% easy, 53% moderate, 23% tough.

Chemistry questions were spread across 26 chapters, with General Organic Chemistry (3), Chemical Bonding and Molecular Structure (2), and d and f Block Elements (2) carrying the most weight. Mathematics questions were spread across 25 chapters, with Three Dimensional Geometry (3), Application of Derivatives (2), and Sequences and Series (2) carrying the most weight. Physics questions were spread across 20 chapters, with Capacitance (2), Current Electricity (2), and Electromagnetic Waves (2) carrying the most weight.

Chemistry

  1. 1The following sets of quantum numbers represent four electrons in an atom. (i) (ii) (iii) (iv) The sequence representing increasing order of26 May, 2012 (Online)Quantum mechanical model
  2. 2The substance used as froth stabilisers in forth-floatation process is26 May, 2012 (Online)Concentration of the Ore
  3. 3The activation energy for a reaction which doubles the rate when the temperature is raised from to is26 May, 2012 (Online)Arrhenius theory
  4. 4Tollen's reagent and Fehling solutions are used to distinguish between26 May, 2012 (Online)Reactions for aldehydes
  5. 5In the following compounds: the order of basicity is as follows26 May, 2012 (Online)Conjugation and Aromaticity
  6. 6Maleic acid and fumaric acids are26 May, 2012 (Online)Isomerism of Organic Compounds
  7. 7Which of the following compounds are antiaromatic26 May, 2012 (Online)Conjugation and Aromaticity
  8. 8The freezing point of a aqueous solution of is found to be . The freezing point constant of water, is . The percentage dissociation of at th26 May, 2012 (Online)Colligative Properties and Abnormal Molecular Masses
  9. 9Which of the following presents the correct order of second ionization enthalpies of and ?26 May, 2012 (Online)Periodic properties
  10. 10A transition metal forms a volatile chloride which has a vapour density of . If it contains of chlorine the formula of the metal chloride wi26 May, 2012 (Online)Quantitative measures in chemical equations
  11. 11Among the following species which two have trigonal pyramidal shape? (I) (II) (III) (IV)26 May, 2012 (Online)Hybridisation and VSEPR Theory
  12. 12Consider the following sequence of reactions Compound ' ' is26 May, 2012 (Online)Reactions of alkenes
  13. 13Fire extinguishers contain and which one of the following?26 May, 2012 (Online)Compounds of Alkali Metals
  14. 14Which one of the following depletes ozone layer?26 May, 2012 (Online)Air Pollution
  15. 15Dipole moment is shown by26 May, 2012 (Online)Dipole moment
  16. 16Which of the following statements is correct?26 May, 2012 (Online)Nucleic Acids
  17. 17The solubility of at is . The solubility product of at this temperature is (molar mass of )26 May, 2012 (Online)Solubility
  18. 18Bakelite is obtained from phenol by reacting it with26 May, 2012 (Online)Preparation and Properties of Polymers
  19. 19Among the following the incorrect statement is26 May, 2012 (Online)Stoichiometric defects
  20. 20Which of the following forms stable oxidation state?26 May, 2012 (Online)F-Block elements
  21. 21Colloidal solutions can be purified by26 May, 2012 (Online)Preparation and Purification of colloids
  22. 22Given Standard electrode potential for the half cell is26 May, 2012 (Online)Types of half cells
  23. 23The complex ion will give26 May, 2012 (Online)Isomerism of coordination compounds
  24. 24The hydration of propyne results in formation of26 May, 2012 (Online)Preparation and Properties of Monohalides
  25. 25One mole of an ideal gas is expanded isothermally and reversibly to half of its initial pressure. for the process in is and26 May, 2012 (Online)Entropy and Second law of thermodynamics
  26. 26The number of bonds in and respectively are26 May, 2012 (Online)Sulphur and Its Compounds
  27. 27Sulphonamides act as26 May, 2012 (Online)Drugs and It's Classification
  28. 28The relationship among most probable velocity, average velocity and root mean square velocity is respectively26 May, 2012 (Online)Kinetic theory of gases
  29. 29The number of unpaired electrons in Gadolinium is26 May, 2012 (Online)F-Block elements
  30. 30One mole of and two moles of were heated in a closed vessel of one-litre capacity at . At equilibrium moles of were found. The equilibrium c26 May, 2012 (Online)Law of Mass Action, Equilibrium Constant (Kc and Kp) and its Application

Mathematics

  1. 1The distance of the point from the straight line that passes through the point and is parallel to the vector is26 May, 2012 (Online)Line in Space
  2. 2Consider the following planes26 May, 2012 (Online)Plane in Space
  3. 3If and then equals26 May, 2012 (Online)Basic Algebra of Matrices
  4. 4If the A.M. between and terms of an A.P. is equal to the A.M. between and terms of the same A.P., then is equal to26 May, 2012 (Online)Arithmetic Progression
  5. 5The value of is26 May, 2012 (Online)Basic Identities & T Ratios
  6. 6The middle term in the expansion of in powers of is26 May, 2012 (Online)Terms of Binomial Expansion
  7. 7equals26 May, 2012 (Online)Trigonometric and Inverse Trigonometric limits
  8. 8The line parallel to -axis and passing through the point of intersection of lines and , where is26 May, 2012 (Online)Derived Forms of Line
  9. 9The chord of the parabola , where one end of the chord is at point , is perpendicular to the axis of the parabola. Then the slope of the nor26 May, 2012 (Online)Chord of parabola
  10. 10Let and denote the following statements : The sun is shining : I shall play tennis in the afternoon The negation of the statement "If the su26 May, 2012 (Online)Mathematical Reasoning
  11. 11If the sum of the series ... upto terms, when is even, is , then the sum of the series, when is odd, is26 May, 2012 (Online)Summation of Series
  12. 12The area bounded by the parabola and the line , in square unit, is26 May, 2012 (Online)Area bounded by two curves
  13. 13Let be defined by Statement 1: The function fhas a local extremum at Statement 2: The function is continuous and differentiable on and26 May, 2012 (Online)Maxima Minima
  14. 14Let and be non empty sets in and is a bijective function. Statement 1: is an onto function. Statement 2: There exists a function such that f26 May, 2012 (Online)Types of Function (Mapping)
  15. 15The number of common tangents of the circles given by and is26 May, 2012 (Online)Common Tangents
  16. 16is equal to26 May, 2012 (Online)Algebra of complex numbers
  17. 17is a polynomial of degree26 May, 2012 (Online)Integration by Substitution
  18. 18The equation of a plane containing the line and the point is26 May, 2012 (Online)Line and Plane
  19. 19Statement 1: The vectors and lie in the same plane if and only if Statement 2: The vectors and are perpendicular if and only if where is a v26 May, 2012 (Online)Product of 2 vectors
  20. 20Statement 1: If the system of equations has a nontrivial solution, then the value of is . Statement 2: A system of three homogeneous equatio26 May, 2012 (Online)System of Linear Equations
  21. 21The normal at to the ellipse, touches a parabola, whose equation is26 May, 2012 (Online)Normal to ellipse
  22. 22If is the greatest integer , then the value of the integral is26 May, 2012 (Online)Properties of Definite Integration
  23. 23If and 1 is a root of equation , then the curve intersect -axis at26 May, 2012 (Online)Relation between Roots and Coefficients
  24. 24If , where , is differentiable at , then26 May, 2012 (Online)Differentiability
  25. 25The integrating factor of the differential equation is26 May, 2012 (Online)Linear Differential Equation
  26. 26Consider the straight lines The correct statement is26 May, 2012 (Online)Concurrency & Family of Lines
  27. 27Statement 1: The variance of first odd natural numbers is Statement 2: The sum of first odd natural number is and the sum of square of first26 May, 2012 (Online)Measures of Dispersion
  28. 28If a metallic circular plate of radius is heated so that its radius increases at the rate of per hour, then the rate at which, the area of t26 May, 2012 (Online)Maxima Minima
  29. 29If seven women and seven men are to be seated around a circular table such that there is a man on either side of every woman, then the numbe26 May, 2012 (Online)Circular Permutation
  30. 30There are two balls in an urn. Each ball can be either white or black. If a white ball is put into the urn and there after a ball is drawn a26 May, 2012 (Online)Conditional Probability and Multiplication Theorem

Physics

  1. 1Three positive charges of equal value are placed at vertices of an equilateral triangle. The resulting lines of force should be sketched as 26 May, 2012 (Online)Electric Field and Electric Field Lines
  2. 2In Young's double slit interference experiment, the slit widths are in the ratio . Then the ratio of intensity at the maxima and minima in t26 May, 2012 (Online)Youngs Double Slit Experiment
  3. 3Which of the plots shown in the figure represents speed of the electron in a hydrogen atom as a function of the principal quantum number ?26 May, 2012 (Online)Bohr's Atomic Model
  4. 4A radio transmitter transmits at . At a certain distance from the transmitter magnetic field has amplitude . The electric field and the wave26 May, 2012 (Online)Electromagnetic Waves and Maxwell's equations
  5. 5A satellite moving with velocity in a force free space collects stationary interplanetary dust at a rate of where is the mass (of satellite 26 May, 2012 (Online)Newton's laws of motion
  6. 6Currents of a 10 ampere and 2 ampere are passed through two parallel thin wires and respectively in opposite directions. Wire is infinitely 26 May, 2012 (Online)Magnetic Field
  7. 7This question has Statement 1 and Statement 2 . Of the four choices given after the Statements, choose the one that best describes the two S26 May, 2012 (Online)Capacitance
  8. 8The resistance of a wire is . It is bent at the middle by and both the ends are twisted together to make a shorter wire. The resistance of t26 May, 2012 (Online)Resistance and Resistivity
  9. 9An air column in a pipe, which is closed at one end, will be in resonance wtih a vibrating tuning fork of frequency if the length of the col26 May, 2012 (Online)Organ Pipe (Vibration of Air Column)
  10. 10The electrical resistance of a conductor of length and area of cross section is given by where ' ' is the electrical resistivity. What is th26 May, 2012 (Online)Dimensions
  11. 11The frequency of -rays; -rays and ultraviolet rays are respectively and then26 May, 2012 (Online)Electromagnetic Spectrum
  12. 12The figure shows a combination of two NOT gates and a NOR gate. The combination is equivalent to26 May, 2012 (Online)Logic gates
  13. 13Photoelectrons are ejected from a metal when light of frequency falls on it. Pick out the wrong statement from the following.26 May, 2012 (Online)Photoelectric Effect
  14. 14The counting rate observed from a radioactive source at was 1600 counts , and , it was 100 counts . The counting rate observed as counts at 26 May, 2012 (Online)Radioactivity
  15. 15A point particle is held on the axis of a ring of mass and radius at a distance from its centre . When released, it reaches under the gravit26 May, 2012 (Online)Gravitational potential and Potential Energy
  16. 16A beam of light consisting of red, green and blue colours is incident on a right-angled prism on face . The refractive indices of the materi26 May, 2012 (Online)Prism and Dispersion of Light
  17. 17The force on a particle of mass , moving along the -axis is given in the figure as a function of its position . The particle is moving with 26 May, 2012 (Online)Energy
  18. 18The door of a working refrigerator is left open in a well insulated room. The temperature of air in the room will26 May, 2012 (Online)Heat Engine, Refrigerator and Second Law of Thermodynamics
  19. 19The terminal velocity of a small sphere of radius in a viscous liquid is proportional to26 May, 2012 (Online)Pressure and thrust
  20. 20A stone of mass , tied to the end of a string, is whirled around in a circle on a horizontal frictionless table. The length of the string is26 May, 2012 (Online)Angular momentum and Angular impulse
  21. 21The disturbance of a wave propagating in the positive -direction is given by at time and by at , where and are in meters. The shape of the w26 May, 2012 (Online)Travelling Waves
  22. 22An ideal monatomic gas with pressure , volume and temperature is expanded isothermally to a volume and a final pressure . If the same gas is26 May, 2012 (Online)Thermodynamic Processes
  23. 23A telescope of aperture diameter is focused on a window at distance fitted with a wire mesh of spacing . Given: , which of the following is 26 May, 2012 (Online)Optical Instruments
  24. 24This question has Statement 1 and Statement 2. Of the four choices given after the Statements, choose the one that best describes the two St26 May, 2012 (Online)Motion of Charged Particle in Magnetic Field
  25. 25A ball is dropped vertically downwards from a height above the ground. It hits the ground inelastically and bounces up vertically. Neglectin26 May, 2012 (Online)Graphs of motion in one dimension
  26. 26A thick-walled hollow sphere has outside radius . It rolls down an incline without slipping and its speed at the bottom is . Now the incline26 May, 2012 (Online)Rolling without Slipping
  27. 27In a cylindrical water tank, there are two small holes and on the wall at a depth of , from the surface of water and at a height of from the26 May, 2012 (Online)Efflux of liquid
  28. 28This question has Statement 1 and Statement 2 . Of the four choices given after the Statements, choose the one that best describes the two S26 May, 2012 (Online)Newton's laws of motion
  29. 29In an experiment of potentiometer for measuring the internal resistance of primary cell a balancing length is obtained on the potentiometer 26 May, 2012 (Online)Electric Instruments
  30. 30The capacitor of an oscillatory circuit is enclosed in a container. When the container is evacuated, the resonance frequency of the circuit 26 May, 2012 (Online)Capacitors with Dielectric

Frequently Asked Questions

1.How many questions are in the JEE Main 2012 26th May Online 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 paper.

3.What is the structure of the JEE Main 2012 26th May Online paper?

The JEE Main 2012 26th May Online paper on MARKS has 90 questions, organised by subject:

  • Chemistry: 30 questions - 30 single-correct.
  • Mathematics: 30 questions - 30 single-correct.
  • Physics: 30 questions - 30 single-correct.
4.What is the difficulty level of the JEE Main 2012 26th May Online paper?

Each question on MARKS carries a difficulty rating. Of the 90 rated questions in this paper, 27 (30%) are easy, 45 (50%) are medium and 18 (20%) are hard. Subject wise:

  • Chemistry: 11 easy, 15 medium, 4 hard
  • Mathematics: 7 easy, 16 medium, 7 hard
  • Physics: 9 easy, 14 medium, 7 hard
5.Which chapters had the most questions in the JEE Main 2012 26th May Online paper?

The chapters with the most questions in each subject were:

  • Chemistry: General Organic Chemistry (3), Chemical Bonding and Molecular Structure (2), and d and f Block Elements (2).
  • Mathematics: Three Dimensional Geometry (3), Application of Derivatives (2), and Sequences and Series (2).
  • Physics: Capacitance (2), Current Electricity (2), and Electromagnetic Waves (2).
6.Are there any out-of-syllabus questions in the JEE Main 2012 26th May Online 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.

7.Where can I find the solutions for the JEE Main 2012 26th May Online 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 paper is coming soon.

8.How should I use the JEE Main 2012 26th May Online 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.

9.Will the JEE Main 2012 26th May Online 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.