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COMEDK 2012

Browse the complete Chemistry, Mathematics, and Physics question set from the COMEDK 2012 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 180 questions in total - 94 easy (52%), 59 moderate (33%) and 27 tough (15%). That's an easier-than-usual mix for this exam - aim to clear it quickly and save time for the harder papers. By subject: Physics 62% easy, 28% moderate, 10% tough; Chemistry 40% easy, 35% moderate, 25% tough; Mathematics 55% easy, 35% moderate, 10% tough.

Chemistry questions were spread across 26 chapters, with General Organic Chemistry (6), Hydrocarbons (5), and Some Basic Concepts of Chemistry (5) carrying the most weight. Mathematics questions were spread across 27 chapters, with Differentiation (5), Circle (4), and Complex Number (4) carrying the most weight. Physics questions were spread across 26 chapters, with Atomic Physics (5), Ray Optics (5), and Waves and Sound (5) carrying the most weight.

Chemistry

  1. 1Which of the following is not a protein?2012Disaccharides and Polysaccharides
  2. 2Which of the following is not true for the adsorption of a gas on a solid?2012Adsorption
  3. 3Peptisation is a process in which2012Preparation and Purification of colloids
  4. 4The mole fraction of benzene in a solution containing by mass in an organic solvent of molecular mass 122 is2012Concentration terms
  5. 5To increase the emf of the above cell2012Cells and Electrode Potential, Nernst Equation
  6. 6Two ions and have radii 104 and 200 pm respectively, in a cubic close packed crystal of compound . The coordination number of is2012Cubic system
  7. 7The mass of a non-volatile solute of molar mass that should be dissolved in of water to reduce its vapour pressure to will be2012Vapour pressure and raoult's law
  8. 8The of boiling water is . This implies that boiling water is2012PH of solutions
  9. 9The spin only magnetic moment of in in aqueous solution will be2012Quantum mechanical model
  10. 10An organic compound which produces a bluish green flame when heated on a copper wire is2012Preliminary Tests
  11. 11Phenol can be distinguished from ethyl alcohol using2012Preliminary Tests
  12. 12The time required for completion of zero order reaction is2012Integrated rate laws
  13. 13The EAN of central metal atom in is [Atomic number of ]2012Terminology of coordination compounds
  14. 14The alcohol obtained during the hydrolysis of ground nut oil is2012Preparation and Properties of Alcohols
  15. 15Which one of the following ores is concentrated by froth floatation process?2012Concentration of the Ore
  16. 16Which of the following electron transitions in the H-atom will release the largest amount of energy?2012Bohr's model
  17. 17An electron having spin quantum number of and magnetic quantum number, can be present in2012Quantum mechanical model
  18. 18The atomic number of the element with highest ionisation energy among the following is2012Periodic properties
  19. 19Number of atoms in of oxygen at STP is2012Mole concept
  20. 20The volume of liberated at STP, when of anhydrous sodium carbonate is treated with excess of dilute is [atomic mass of2012Quantitative measures in chemical equations
  21. 21The oxidation number of oxygen is in2012Oxidation number
  22. 22The heat of formation of is . The heat of formation of is likely to be2012Laws of Thermochemistry and Enthalpy Change
  23. 23The temperature of one mole of an ideal gas increases from to , when it absorbs of heat at constant volume. The change in the internal energ2012First Law and Basic Fundamentals of Thermodynamics
  24. 24of was added to of pure . What would remain after the reaction?2012Mole concept
  25. 25The velocity of and are in the ratio of2012Kinetic theory of gases
  26. 26A negative catalyst will2012Arrhenius theory
  27. 27The number of and -bonds in pent-2-yne is2012Covalent and Co-ordinate Bonding
  28. 28In Lassaigne's test for nitrogen in an organic compound, the blue colouration is due to the formation of2012Qualitative analysis of organic compounds
  29. 29The organic compound obtained during the addition of HBr to propene in the presence of peroxide catalyst is2012Reactions of alkenes
  30. 30On passing into a solution containing both and in acidic medium, only CuS gets precipitate(d) This is because2012Solubility
  31. 31The volume of obtained at , when obtained by passing a current of through molten for min is treated with excess of dilute HCl is approximate2012Cells and Electrode Potential, Nernst Equation
  32. 32Markownikoff's rule is applicable to2012Reactions of alkenes
  33. 33The reaction of ethene is the presence of can be example for2012Electron displacement effects
  34. 34. The product in the above sequence of reactions is2012Properties and Preparation of Alkenes
  35. 35An organic compound is optically active if, it2012Isomerism of Organic Compounds
  36. 36Identify the electrophile in the following.2012Attacking reagents
  37. 37The ionisation constant of phenol is more than that of ethanol because2012Electron displacement effects
  38. 38The product in the following sequence of chemical reaction is2012Reaction Involving Cleavage of -OH Group
  39. 39Which of the following statements is not true?2012Electron displacement effects
  40. 40Maximum number of molecules of methyl iodide that can react with one molecule of methyl amine is2012Preparation and Properties of Amines
  41. 41The amine which will not liberate nitrogen with nitrous acid is2012Preparation and Properties of Amines
  42. 42Which of the following is aromatic?2012Reactions of aromatic compounds
  43. 43The mass of hydrogen in gram required to completely saturate 1 mole of triolein is2012Mole concept
  44. 44and in this sequence of reactions are2012Properties and Preparation of Alkenes
  45. 45The enthalpy of neutralisation of and is . The heat evolved, when of is mixed with of will be2012Laws of Thermochemistry and Enthalpy Change
  46. 46The initial concentrations of and are equal. At equilibrium, the concentration of is twice that of . The equilibrium constant of the reactio2012Law of Mass Action, Equilibrium Constant (Kc and Kp) and its Application
  47. 47The dissociation of lime stone in the slag zone of the blast furnace is2012Entropy and Second law of thermodynamics
  48. 48Which of the following is not true for concentrated ?2012Sulphur and Its Compounds
  49. 49Which of the following noble gases has the highest van der Waals' force of attraction?2012Van Der Waals Forces, Hydrogen Bonding and Metallic Bonding
  50. 50Which one of the following metal ions is coloured?2012Properties of D-block elements
  51. 51Coordination number of nickel in is2012Terminology of coordination compounds
  52. 52IUPAC name of is2012Nomenclature of coordination compounds
  53. 53Decomposition of on the surface of platinum has a rate constant of the reaction is2012Rate law and rate constant
  54. 54The rate equation of a gaseous reaction is given by . If the volume of the reaction vessel is suddenly reduced to of the initial volume, the2012Rate of reaction
  55. 55The reduction potential of an electrode can be increased by2012Cells and Electrode Potential, Nernst Equation
  56. 56An electric current is passed through silver and water voltameters connected in series. The cathode of the silver voltameter weighed more at2012Cells and Electrode Potential, Nernst Equation
  57. 57The of a mixture of of . of and of is2012PH of solutions
  58. 58The conjugate acid of is2012Theories of Acids and Bases
  59. 59Phenyl isocyanide is formed when chloroform is treated with alcoholic potassium hydroxide and2012Preparation and Properties of Isocyanides
  60. 60Which of the following does not undergo aldol condensation reaction?2012Chemical reactions for aldehydes and ketones

Mathematics

  1. 1If the area of the circle is sq units, then the value of is2012General Equation of 2nd degree curve
  2. 2A man running a race-course notes that the sum of the distances from the two flag posts from him is always and the distance between the flag2012Equation of Ellipse
  3. 3The number of common tangents to the circles and is2012Common Tangents
  4. 4Equation of the chord of the circle bisected at is2012Chord with given Middle Point
  5. 5The angle between two asymptotes of the hyperbola is2012Asymptotes
  6. 6The parametric equation of a parabola is . The cartesian equation of its directrix is2012standard equation of parabola
  7. 7If and , then is equal to2012Product of 2 vectors
  8. 8The direction cosines of the vector is equal to2012Direction Cosines and Direction Ratios
  9. 9If are the cube roots of unity, then is equal to2012Cube Root of Unity
  10. 10If , then is equal to2012Definite Integration by Substitution
  11. 11Preview not available - open to view this question.2012Properties of Definite Integration
  12. 12Area of the ellipse is given by2012Equation of Ellipse
  13. 13The order of the differential equation2012Order and Degree
  14. 14The solution of is2012Variable Separable Form
  15. 15If , then the value of is equal to2012Converting one Inverse T function to other Inverse T
  16. 16The unit vector in the direction of the vector is equal to2012Product of 2 vectors
  17. 17Identify the false statement.2012Mathematical Reasoning
  18. 18If upto terms then at and is equal to2012Summation of Series
  19. 19If , then is equal to2012Sum and Difference & Multiple angle Formula
  20. 20If is a cube root of unity, then the value of is equal to2012Cube Root of Unity
  21. 21If the tangent to the curve at the point cuts off intercepts and on the coordinate axes, where , then the value of is equal to2012Tangent Normal
  22. 22Length of the subtangent at on the curve is equal to2012Tangent Normal
  23. 23The function is increasing in the interval2012Monotonicity
  24. 24Divide 20 into two parts such that the product of one part and the cube of the other is maximum. The two parts are2012Derivative of f(x) wrt g(x)
  25. 25The number of positive divisors of 4896 is2012Remainder and Divisibility Problems
  26. 26The last digit of is2012Mathematical Induction
  27. 27Preview not available - open to view this question.2012Integration by Substitution
  28. 28If , then is equal to2012Integration by Parts
  29. 29Preview not available - open to view this question.2012Properties of Definite Integration
  30. 30If , then is equal to2012Logarithm
  31. 31If , then2012Arithmetic Geometric Progression
  32. 32If are the roots of the equation , then the value of is2012N degree equation
  33. 33The middle term in the expansion of is2012Terms of Binomial Expansion
  34. 34If is false, then the truth values of and are2012Mathematical Reasoning
  35. 35If , where , then the ordered pair is2012Factorial
  36. 36Preview not available - open to view this question.2012Measurement of Angles
  37. 37If , then is equal to2012T-Ratios of Multiple & sub multiple angles
  38. 38If , then is equal to2012Cosine Rule and Projection Formula
  39. 39If , then2012Algebra of complex numbers
  40. 40If , then2012Derivative of f(x) wrt g(x)
  41. 41If , then2012Derivative of f(x) wrt g(x)
  42. 42If , then2012Logarithmic differentiation
  43. 43If , then2012Parametric differentiation
  44. 44In the group under the value of is equal to2012Mathematical Reasoning
  45. 45Which of the following is a subgroup of the group under2012Mathematical Reasoning
  46. 46If and , then is equal to2012System of Linear Equations
  47. 47If and , then is equal to2012System of Linear Equations
  48. 48If , then is equal to2012Expansion of Determinants
  49. 49If a vertex of traingle is and the mid-points of two sides through this vertex are and , then the centroid of the triangle is given by2012Coordinate System
  50. 50The image of the point on the line is2012Point and Line
  51. 51If the sum of the slopes of the lines given by is three times their product, then has the value2012Angle between Lines
  52. 52Preview not available - open to view this question.2012Algebraic and Rational Limits
  53. 53If is continuous at , then2012Existance of Limit
  54. 54The non-adjacent vertex in the graph is2012Algebra of Vectors
  55. 55is equal to2012Converting one Inverse T function to other Inverse T
  56. 56The multiplicative inverse of is2012Algebra of complex numbers
  57. 57The general solution of2012Solving Trigonometric Equation
  58. 58The angle between the circles2012Intersection of Circles
  59. 59If and , then the angle between and is2012Product of 2 vectors
  60. 60The domain of the function2012Domain

Physics

  1. 1The number of neutrons in nucleus is2012Nuclear structure
  2. 2Reverse saturation current of a diode2012Diodes
  3. 3A radioactive sample has a half-life of . If 64 nuclei are contained in the sample the number of nuclei that would decay after, is2012Radioactivity
  4. 4The carrier of electromagnetic interaction is2012Electromagnetic Waves and Maxwell's equations
  5. 5The output of NOT gate when its input is 02012Logic gates
  6. 6LCD stands for2012Diodes
  7. 7Which of the following statement is false?2012Interference and Superposition of Waves
  8. 8The correct relation between and for an optically active solution is2012Polarization of Light
  9. 9An inductor and a resistor are connected to an supply of and . If the voltage across the resistor is , then the voltage across the inductor 2012AC Circuits
  10. 10A capacitor is charged to and disconnected from the battery. If another uncharged capacitor is connected across it in parallel, then the vol2012Grouping of capacitors
  11. 11When two light nuclei fuse to form a relatively heavier nucleus, then the specific binding energy of the product nucleus is2012Nuclear reactions
  12. 12Two point charges and are placed as shown. The coordinates of the point are . The electric intensity vector at subtends an angle with the po2012Electric Field and Electric Field Lines
  13. 13The direction of the force on a current carrying conductor held perpendicular to an uniform magnetic field is given by2012Force and Torque on Current Carrying Conductor
  14. 14A convex lens of focal length is placed in contact with a concave lens of focal length . The equivalent focal length of the combination is2012Combination of Lens and Mirrors
  15. 15If , where is measured in metre and in second, then the dimension of is2012Dimensions
  16. 16A particle is moving eastward with a velocity . In the velocity changes to northwards. The average acceleration in this time is2012Relative motion
  17. 17A mass of is hung at the mark from a rod weighing pivoted at its centre. The rod will not topple if2012Torque
  18. 18Which of the following cannot be explained on the basis of Bernoulli's principle?2012Hydrodynamics
  19. 19The layer in the Earth's atmosphere which reflects radio waves from the Earth, thus helping radio communication is2012Communication System
  20. 20The reaction of the floor on an object placed on the floor of an elevator is maximum when elevator2012Motion Under Gravity
  21. 21A particle is projected at an angle of with the horizontal with a momentum . At the highest point its momentum is2012Projectile motion
  22. 22A block of mass is held against a wall by applying a horizontal force of on it. If between the wall and the block is , the magnitude of the 2012Frictional force
  23. 23A ring rolls down an inclined plane. The ratio of the rotational kinetic energy to translational kinetic energy is2012Rotational kinematics
  24. 24If of work is done in by a water pump, then the power of the pump is2012Power
  25. 25Assuming, and , where and are the acceleration due to gravity and diameter respectively, the escape velocity from the Moon is2012Gravitational potential and Potential Energy
  26. 26The work done in taking an ideal gas through one cycle of operation as shown in the indicator diagram below2012First Law of Thermodynamics
  27. 27The ratio of speed of sound in hydrogen to that in oxygen at the same temperature is2012Speed of Sound Waves
  28. 28A black body at a temperature radiates energy at the rate of . If the temperature is decreased by , then the energy radiated will be2012Radiation
  29. 29A particle executes simple harmonic motion with amplitude . The distance moved by the particle in one oscillation is2012Simple Harmonic Motion
  30. 30A capacitor of is connected to a cell. The maximum charge on the capacitor will be2012Capacitance
  31. 31A wire of uniform cross-section has a resistance . It is cut into ten equal parts. The parts are connected in parallel between two points an2012Resistance and Resistivity
  32. 32Wires made of iron and silicon are cooled from to , then2012Resistance and Resistivity
  33. 33In a meter bridge a copper coil is connected in the right gap and a resistance of in the left gap. The balance point is obtained at . The re2012Wheatstone Bridge
  34. 34Two identical concentric coils and carrying currents in the ratio are arranged in mutually perpendicular planes. If the magnetic field due t2012Magnetic Field
  35. 35Which of the following is based on mechanical effect of electric current?2012Alternating Current, Voltage and Power
  36. 36According to Faraday's law of electromagnetic induction an emf is induced in a coil, if2012Magnetic Flux, Faraday's and Lenz law
  37. 37The current in a coil changes from to in secon(d) If the coefficient of self-induction of the coil is , then the magnitude of the self-induc2012Magnetic Flux, Faraday's and Lenz law
  38. 38The graph of kinetic energy of photoelectron versus frequency of incident radiation is shown for two metals and . We may definitely conclude2012Photoelectric Effect
  39. 39Choose the wrong statement.2012Atomic Structure
  40. 40In the case of the Bohr atom model if and are the kinetic and potential energies of an electron in an orbit, then2012Bohr's Atomic Model
  41. 41The ratio of the magnetic fields at the centre of a circular coil carrying current to that at a point whose distance is half of the radius o2012Magnetic Field
  42. 42The difference between the wavelengths of the stokes line and anti-stokes lines in the Raman spectrum of H-Br molecule is . If the wavelengt2012Atomic Spectrum
  43. 43Optical pumping means transferring electrons2012Atomic Spectrum
  44. 44An open pipe immersed in water to half its length. The ratio of the fundamental frequency of the pipe before and after immersion in water is2012Organ Pipe (Vibration of Air Column)
  45. 45Assuming, and the values of and of a gas are2012Calorimetry
  46. 46A star A is 100 times brighter than star . Then, the difference in their apparent magnitudes is2012Properties of Sound Waves
  47. 47A monochromatic ray of light enters into a glass along the normal to the surface. The angle of deviation of the refracted ray is2012Reflection of Light from Plane Mirror
  48. 48A ray of light passing from glass to water is incident on the glass-water interface at . If the critical angle for the pair of media is .2012Critical angle and total internal reflection
  49. 49An equilateral prism is kept in the minimum deviation position. If the angle of incidence of a monochromatic ray at a refracting face is , t2012Prism and Dispersion of Light
  50. 50A glass hemisphere of radius and refractive index is placed over a spot on a table and the spot is viewed from above. The spot appears to be2012Lens Formula, Refraction of light from curved surface
  51. 51Photoelectric effect and Raman effect can be explained on the basis of2012Photoelectric Effect
  52. 52In an interference pattern the ratio of the intensity of light at the bright fringe to that at the dark fringe is . Then, the ratio of the a2012Interference and Superposition of Waves
  53. 53Diffraction effects are more easily detected in the case of sound waves than light waves because2012Diffraction of Light
  54. 54If is the polarising angle for a medium in which the speed of light is , then according to Brewster's law2012Polarization of Light
  55. 55Two polaroid and are kept with their transmission axes at an angle with respect to one another. If the transmitted intensity of light , wher2012Polarization of Light
  56. 56The electric force between two point charges separated by a certain distance in air is . The distance at which they should be placed in a me2012Electric Charge and Coulomb's law
  57. 57A positively charged particle is released from rest in a region of uniform electric fiel(d) The particle will move2012Electric Field and Electric Field Lines
  58. 58Two charges and are separated by a distance . If the electric intensity at the site of is , then the electric field at the site of is2012Electric Field and Electric Field Lines
  59. 59Choose the correct statement.2012Junction Transistors
  60. 60"Plum pudding" model of an atom was proposed by2012Atomic Models

Frequently Asked Questions

1.How many questions are in the COMEDK 2012 paper?

This paper has 180 questions in total - 60 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 COMEDK 2012 paper?

The COMEDK 2012 paper on MARKS has 180 questions, organised by subject:

  • Chemistry: 60 questions - 60 single-correct.
  • Mathematics: 60 questions - 60 single-correct.
  • Physics: 60 questions - 60 single-correct.
4.What is the difficulty level of the COMEDK 2012 paper?

Each question on MARKS carries a difficulty rating. Of the 180 rated questions in this paper, 94 (52%) are easy, 59 (33%) are medium and 27 (15%) are hard. Subject wise:

  • Chemistry: 24 easy, 21 medium, 15 hard
  • Mathematics: 33 easy, 21 medium, 6 hard
  • Physics: 37 easy, 17 medium, 6 hard
5.Which chapters had the most questions in the COMEDK 2012 paper?

The chapters with the most questions in each subject were:

  • Chemistry: General Organic Chemistry (6), Hydrocarbons (5), and Some Basic Concepts of Chemistry (5).
  • Mathematics: Differentiation (5), Circle (4), and Complex Number (4).
  • Physics: Atomic Physics (5), Ray Optics (5), and Waves and Sound (5).
6.Where can I find the solutions for the COMEDK 2012 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.

7.How should I use the COMEDK 2012 paper to check my preparation?

Set a timer, attempt the 180 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 COMEDK. Repeating this with other papers shows whether the same weak spots keep coming back.

8.Will the COMEDK 2012 paper help me prepare for COMEDK 2027?

Yes. Every past paper shows the question styles and topics COMEDK 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.