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JEE Main 2012 7th May Online

Browse the complete Chemistry, Mathematics, and Physics question set from the JEE Main 2012 7th 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 - 32 easy (36%), 44 moderate (49%) and 14 tough (16%). That's a fairly typical mix for this exam. By subject: Physics 37% easy, 47% moderate, 17% tough; Chemistry 40% easy, 57% moderate, 3% tough; Mathematics 30% easy, 43% moderate, 27% tough.

Chemistry questions were spread across 20 chapters, with General Organic Chemistry (4), Amines (2), and Chemical Bonding and Molecular Structure (2) carrying the most weight. Mathematics questions were spread across 25 chapters, with Functions (2), Sequences and Series (2), and Straight Lines (2) carrying the most weight. Physics questions were spread across 23 chapters, with Atomic Physics (2), Laws of Motion (2), and Mechanical Properties of Solids (2) carrying the most weight.

Chemistry

  1. 1Which one of the following compounds is an antifertility drug?07 May, 2012 (Online)Drugs and It's Classification
  2. 2The most basic compound among the following is07 May, 2012 (Online)Preparation and Properties of Amines
  3. 3A battery is constructed of and . The unbalanced chemical equation when such a battery discharges is following: If one Faraday of electricit07 May, 2012 (Online)Cells and Electrode Potential, Nernst Equation
  4. 4The limiting line in Balmer series will have a frequency of (Rydberg constant, cycles )07 May, 2012 (Online)Hydrogen spectrum
  5. 5Which of the following cannot be represented by resonance structures?07 May, 2012 (Online)Conjugation and Aromaticity
  6. 6Which of the oxide groups among the following cannot be reduced by carbon?07 May, 2012 (Online)Carbon and Its Compounds
  7. 7Among the following, the species having the smallest bond is07 May, 2012 (Online)Molecular Orbital Theory
  8. 8Based on lattice energy and other considerations, which one of the following alkali metal chloride is expected to have the highest melting p07 May, 2012 (Online)Ionic bond
  9. 9The entropy of a sample of a certain substance increases by on adding reversibly of heat at constant temperature. The temperature of the sam07 May, 2012 (Online)Entropy and Second law of thermodynamics
  10. 10The electron affinity of chlorine is gram of chlorine is completely converted to ion in a gaseous state. . Energy released in the process is07 May, 2012 (Online)Laws of Thermochemistry and Enthalpy Change
  11. 11Copper wire test for halogens is known as07 May, 2012 (Online)Qualitative analysis of organic compounds
  12. 12For of an ideal gas at a constant temperature , the plot of against is a ( : Pressure, : Volume)07 May, 2012 (Online)Gas laws and Ideal Gas Equation
  13. 13Which one of the following is a chain growth polymerisation?07 May, 2012 (Online)Classification of Polymers
  14. 14The -electron configurations of and are and respectively. Which one of the following will exhibit the lowest paramagnetic behaviour? (Atomic07 May, 2012 (Online)Properties of D-block elements
  15. 15If is the mass of the gas adsorbed on mass of the adsorbent at pressure , Freundlich adsorption isotherm gives a straight line on plotting07 May, 2012 (Online)Adsorption isotherms
  16. 16The solubility (in mol ) of in a solution will be07 May, 2012 (Online)Solubility
  17. 17Among the following which is the best description of water in the solid phase?07 May, 2012 (Online)Properties and Types of Solids
  18. 18All of the following statements apply to proteins except07 May, 2012 (Online)Proteins
  19. 19and are the equilibrium constants of the following reactions (I), (II) and (III) respectively: (I) (II) (III) The correct relation from the 07 May, 2012 (Online)Rate law and rate constant
  20. 20The concentrated sulphuric acid that is peddled commercial is by weight. If the density of this commercial acid is , the molarity of this so07 May, 2012 (Online)Concentration terms
  21. 21A solid has a ' ' structure. If the distance of nearest approach between two atoms is , the edge length of the cell is07 May, 2012 (Online)Cubic system
  22. 22Reaction rate between two substance and is expressed as following: rate If the concentration of is doubled and concentration of is made half07 May, 2012 (Online)Rate of reaction
  23. 23How many cyclic structures are possible for ?07 May, 2012 (Online)Isomerism of coordination compounds
  24. 24Which is not the correct Statement? (At. nos. )07 May, 2012 (Online)F-Block elements
  25. 25In which of the following arrangements, the sequence is not strictly according to the property written against it?07 May, 2012 (Online)Periodic properties
  26. 26The IUPAC name of the compound CC1CO1 is:07 May, 2012 (Online)IUPAC Nomenclature
  27. 27Green house gases can be arranged in 'Global Warming Potential' sequence as07 May, 2012 (Online)Air Pollution
  28. 28Among the following the order of reactivity towards nucleophilic addition is07 May, 2012 (Online)Electron displacement effects
  29. 29, Here is07 May, 2012 (Online)Preparation and Properties of Amines
  30. 30The ratio of number of oxygen atoms in ozone carbon monoxide and oxygen is (Atomic mass : and Avogadro's constant )07 May, 2012 (Online)Mole concept

Mathematics

  1. 1If be two matrices, then is a non-zero matrix for not equal to07 May, 2012 (Online)Symmetric & Skew Symmetric Matrices
  2. 2If a circular iron sheet of radius is heated such that its area increases at the uniform rate of , then the rate (in ) at which the radius o07 May, 2012 (Online)Maxima Minima
  3. 3The difference between the fourth term and the first term of a Geometrical Progresssion is 52. If the sum of its first three terms is 26 , t07 May, 2012 (Online)Geometric Progression
  4. 4The value of for which the equation has both roots real, distinct and negative is07 May, 2012 (Online)Relation between Roots and Coefficients
  5. 5Let be a solution of . If , then equals07 May, 2012 (Online)Linear Differential Equation
  6. 6If the eccentricity of a hyperbola , which passes through , is , then the value of is07 May, 2012 (Online)Equation of hyperbola
  7. 7If , for all , then the value of is07 May, 2012 (Online)Leibnitz Rule of Differentiation
  8. 8If the number of 5-element subsets of the set of 20 distinct elements is times the number of 5-element subsets containing , then is07 May, 2012 (Online)Combination
  9. 9If the system of equations has a unique solution, then is not equal to07 May, 2012 (Online)System of Linear Equations
  10. 10If the straight lines and form a triangle, then the triangle is07 May, 2012 (Online)Angle between Lines
  11. 11Let be an indefinite integral of . Statement 1: is a periodic function of period . Statement 2: is a periodic function.07 May, 2012 (Online)Integration by Parts
  12. 12The parabola divides the circle into two parts whose areas are in the ratio07 May, 2012 (Online)Area bounded by two curves
  13. 13The equation of the circle passing through the point and through the points of intersection of and is given by07 May, 2012 (Online)line and circle
  14. 14The frequency distribution of daily working expenditure of families in a locality is as follows: If the mode of the distribution is , then t07 May, 2012 (Online)Mode
  15. 15The sum of the series is07 May, 2012 (Online)Summation of Series
  16. 16The point of intersection of the lines and (a real) lies on the -axis for07 May, 2012 (Online)Basic Forms of Straight Line
  17. 17is parallelogram. The position vectors of and are respectively, and . If is the midpoint of the diagonal , then the magnitude of the project07 May, 2012 (Online)Algebra of Vectors
  18. 18The range of the function , is07 May, 2012 (Online)Range
  19. 19If two vertical poles and high stand apart on a horizontal plane, then the height (in ) of the point of intersection of the lines joining th07 May, 2012 (Online)Heights and Distances
  20. 20If and are coplanar vectors, then is equal to07 May, 2012 (Online)Algebra of Vectors
  21. 21Statement 1: is always a tangent to the parabola, for all non-zero values of . Statement 2: Every tangent to the parabola, will meet its axi07 May, 2012 (Online)Tangent to Parabola
  22. 22Let and be any two complex number. Statement 1: Statement 2:07 May, 2012 (Online)Algebra of complex numbers
  23. 23Let and are two events such that Statement 1: Statement 2:07 May, 2012 (Online)Questions on Venn Diagram
  24. 24If then the coefficient of in it is07 May, 2012 (Online)Terms of Binomial Expansion
  25. 25The values of a for which the two points and lie on the opposite sides of the plane , satisfy07 May, 2012 (Online)Plane in Space
  26. 26Preview not available - open to view this question.07 May, 2012 (Online)Trigonometric and Inverse Trigonometric limits
  27. 27A line with positive direction cosines passes through the point and makes equal angles with the coordinate axes. If the line meets the plane07 May, 2012 (Online)Line and Plane
  28. 28Let . Statement 1: for in Statement 2: for in but as .07 May, 2012 (Online)Range
  29. 29The Statement that is TRUE among the following is07 May, 2012 (Online)Mathematical Reasoning
  30. 30If , then as a function of , at is07 May, 2012 (Online)Differentiability

Physics

  1. 1Which graph correctly presents the variation of acceleration due to gravity with the distance from the centre of the earth (radius of the ea07 May, 2012 (Online)Acceleration Due to Gravity
  2. 2A car of mass is moving at a speed of 30 . Brakes are applied to bring the car to rest. If the net retarding force is , the car comes to sto07 May, 2012 (Online)Newton's laws of motion
  3. 3A perfect gas at is heated at constant pressure so as to double its volume. The final temperature of the gas will be, close to07 May, 2012 (Online)Thermodynamic Processes
  4. 4A square hole of side length is made at a depth of and a circular hole of radius is made at a depth of from the surface of water in a water 07 May, 2012 (Online)Hydrodynamics
  5. 5A structural steel rod has a radius of and length of . A force stretches it along its length. Young's modulus of structural steel is . The p07 May, 2012 (Online)Young's Modulus and Breaking Stres
  6. 6The heat radiated per unit area in 1 hour by a furnace whose temperature is is )07 May, 2012 (Online)Radiation
  7. 7Broadcasting antennas are generally07 May, 2012 (Online)Communication System
  8. 8The velocity of certain ions that pass undeflected through crossed electric field and magnetic field is07 May, 2012 (Online)Motion of Charged Particle in Magnetic Field
  9. 9Following are expressions for four plane simple harmonic waves (i) (ii) (iii) (iv) The pairs of waves which will produce destructive interfe07 May, 2012 (Online)Interference and Superposition of Waves
  10. 10An engine pumps water continuously through a hose. Water leaves the hose with velocity and is mass per unit length of the water jet. If this07 May, 2012 (Online)Newton's laws of motion
  11. 11The electron of a hydrogen atom makes a transition from the orbit to the orbit. For large the wavelength of the emitted radiation is proport07 May, 2012 (Online)Atomic Spectrum
  12. 12The graph of an object's motion (along the axis) is shown in the figure. The instantaneous velocity of the object at points and are and resp07 May, 2012 (Online)Graphs of motion in one dimension
  13. 13A circular hole of diameter is cut from a disc of mass and radius ; the circumference of the cut passes through the centre of the disc. The 07 May, 2012 (Online)Moment of inertia of rigid bodies
  14. 14In a Young's double slit experiment with light of wavelength , fringe pattern on the screen has fringe width . When two thin transparent gla07 May, 2012 (Online)Youngs Double Slit Experiment
  15. 15This question has Statement 1 and Statement 2. Of the four choices given after the Statements, choose the one that best describes the two St07 May, 2012 (Online)Thermodynamic Processes
  16. 16This question has Statement 1 and Statement 2. Of the four choices given after the Statements, choose the one that best describes the two St07 May, 2012 (Online)Electric Current and Drift of Electrons
  17. 17Given that energy, velocity, time. If they are chosen as the fundamental units, then what is dimensional formula for surface tension?07 May, 2012 (Online)Dimensions
  18. 18A particle gets displaced by under the action of a force . The change in its kinetic energy is07 May, 2012 (Online)Energy
  19. 19Two circuits (a) and (b) have charged capacitors of capacitance C, 2C and 3C with open switches. Charges on each of the capacitor are as sho07 May, 2012 (Online)Grouping of capacitors
  20. 20In an circuit shown in the following figure, what will be the readings of the voltmeter across the resistor and ammeter if an a.c. source of07 May, 2012 (Online)AC Circuits
  21. 21This question has Statement 1and Statement 2. Of the four choices given after the Statements, choose the one that best describes the two Sta07 May, 2012 (Online)Organ Pipe (Vibration of Air Column)
  22. 22A bar magnet of length has a magnetic moment of . Find the strength of magnetic field at a distance of from the centre of the magnet along i07 May, 2012 (Online)Magnetism and Properties of Magnet
  23. 23The load versus elongation graphs for four wires of same length and made of the same material are shown in the figure. The thinnest wire is 07 May, 2012 (Online)Elasticity
  24. 24In the Rutherford experiment, -particles are scattered from a nucleus as shown. Out of the four paths, which path is not possible?07 May, 2012 (Online)Atomic Structure
  25. 25The electric potential in a region around the origin is given by volts. The electric charge enclosed in a cube of side with its centre at th07 May, 2012 (Online)Electric Potential and Potential Energy
  26. 26Two polaroids have their polarizing directions parallel so that the intensity of a transmitted light is maximum. The angle through which eit07 May, 2012 (Online)Polarization of Light
  27. 27Which of the following processes play a part in the formation of a rainbow? (i) Refraction (ii) Total internal reflection (iii) Dispersion (07 May, 2012 (Online)Critical angle and total internal reflection
  28. 28A sample originally contained radioactive atoms, which emit -particles. The ratio of particles emitted in the third year to that emitted dur07 May, 2012 (Online)Radioactivity
  29. 29A solid sphere having mass and radius rolls down an inclined plane. Then its kinetic energy is07 May, 2012 (Online)Rotational kinematics
  30. 30Which logic gate with inputs and performs the same operation as that performed by the following circuit?07 May, 2012 (Online)Logic gates

Frequently Asked Questions

1.How many questions are in the JEE Main 2012 7th 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.How is the JEE Main 2012 7th May Online paper structured?

The JEE Main 2012 7th 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.How difficult is the JEE Main 2012 7th May Online paper?

Each question on MARKS carries a difficulty rating. Of the 90 rated questions in this paper, 32 (36%) are easy, 44 (49%) are medium and 14 (16%) are hard. Subject wise:

  • Chemistry: 12 easy, 17 medium, 1 hard
  • Mathematics: 9 easy, 13 medium, 8 hard
  • Physics: 11 easy, 14 medium, 5 hard
5.Which chapters were asked the most in the JEE Main 2012 7th May Online paper?

The chapters with the most questions in each subject were:

  • Chemistry: General Organic Chemistry (4), Amines (2), and Chemical Bonding and Molecular Structure (2).
  • Mathematics: Functions (2), Sequences and Series (2), and Straight Lines (2).
  • Physics: Atomic Physics (2), Laws of Motion (2), and Mechanical Properties of Solids (2).
6.Are there any out-of-syllabus questions in the JEE Main 2012 7th May Online paper?

Yes. 17 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 7th 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 7th 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 7th 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.