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COMEDK 2020

Browse the complete Chemistry, Mathematics, and Physics question set from the COMEDK 2020 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 - 74 easy (41%), 86 moderate (48%) and 20 tough (11%). 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 42% easy, 45% moderate, 13% tough; Chemistry 37% easy, 57% moderate, 7% tough; Mathematics 45% easy, 42% moderate, 13% tough.

Chemistry questions were spread across 20 chapters, with General Organic Chemistry (8), Coordination Compounds (5), and Some Basic Concepts of Chemistry (5) carrying the most weight. Mathematics questions were spread across 28 chapters, with Circle (5), Application of Derivatives (4), and Complex Number (4) carrying the most weight. Physics questions were spread across 29 chapters, with Electrostatics (7), Laws of Motion (4), and Magnetic Effects of Current (4) carrying the most weight.

Chemistry

  1. 1During the extraction of gold the following reactions take place and are respectively2020Concentration of the Ore
  2. 2The number of gram molecules of chlorine in hydrogen chloride molecules is2020Mole concept
  3. 3Graphite is a soft solid lubricant extremely difficult to melt. The reason for this anomalous behaviour is that, graphite2020Classification of organic compounds
  4. 4Paracetamol is a/an2020Drugs and It's Classification
  5. 5Which one of the following has maximum number of atoms of oxygen?2020Mole concept
  6. 6Which one of the following shows functional isomerism?2020Isomerism of Organic Compounds
  7. 7In the ionic equation, the value of is2020Balancing of redox reactions
  8. 8Molarity of a given orthophosphoric acid solution is . It's normality is2020Concentration terms
  9. 9Acidified sodium fusion extract on addition of ferric chloride solution gives blood red colouration which confirms the presence of2020Compounds of Transition Metals
  10. 10A body of mass is moving with a velocity of . The wavelength of de-Broglie wave associated with it would be (2020Dual Behaviour of Matter and Heisenberg Uncertainty Principle
  11. 11is isoelectronic with2020Atomic Mass and Atomic Size
  12. 12Gram molecular volume of oxygen at STP is2020Mole concept
  13. 13Presence of halogen in organic compounds can be detected using2020Quantitative analysis of organic compounds
  14. 14The electronic configuration of is2020Properties of D-block elements
  15. 15The mass of a metal, with equivalent mass , which would combine with of oxygen is2020Laws of chemical combination
  16. 16Benzene reacts with chlorine in sunlight to give a final product2020Preparation and Properties of Aryl Halides
  17. 17In the periodic table metals usually used as catalysts belong to2020Properties of D-block elements
  18. 18Dalton's law of partial pressures is applicable to which one of the following systems?2020Mixture of gases
  19. 19The general formula of a cycloalkene is2020IUPAC Nomenclature
  20. 20In acetylene molecule, between the carbon atoms there are2020Covalent and Co-ordinate Bonding
  21. 21Denatured alcohol is2020Preparation and Properties of Alcohols
  22. 22During the formation of a chemical bond2020Covalent and Co-ordinate Bonding
  23. 23One mole of oxygen at and one mole of sulphur dioxide at are taken in two separate containers, then2020Kinetic theory of gases
  24. 2484 .+I-effect is shown by2020Electron displacement effects
  25. 25Formation of coloured solution is possible, when metal ion in the compound contains2020Properties of D-block elements
  26. 26Which of the following is an intensive property?2020System and surrounding
  27. 27Hofmann's bromamide reaction is to convert2020Preparation and Properties of Amides
  28. 28IUPAC name of is2020Nomenclature of coordination compounds
  29. 29Thermodynamic standard conditions of temperature and pressure are2020System and surrounding
  30. 30How many chiral carbon atoms are present in -trichloropentane ?2020Isomerism of Organic Compounds
  31. 31The number of unidentate ligands in the complex ion is called2020Terminology of coordination compounds
  32. 32is an example for2020Catalysis and Theories of Catalysis
  33. 33The amino acid which is not optically active is2020Properties and Preparation of Amino Acids
  34. 34For a stable molecule the value of bond order must be2020Molecular Orbital Theory
  35. 35Which one of the following is a second order reaction?2020Methods to determine order of reaction
  36. 36According to Baeyer's strain theory which is highly stable?2020Isomerism of Organic Compounds
  37. 37The number of antibonding electron pairs in molecular ion on the basis of molecular orbital theory is [Atomic number of is 18 ]2020Molecular Orbital Theory
  38. 38Hydroxyl ion concentration of is2020Theories of Acids and Bases
  39. 39Geometrical isomerism is shown by2020Isomerism of Organic Compounds
  40. 40The oxidation state of iron in is,2020Terminology of coordination compounds
  41. 41In which of the following process, a maximum increase in entropy is observed?2020Entropy and Second law of thermodynamics
  42. 42Decomposition of benzene diazonium chloride by using to form chlorobenzene is2020Chemical reactions for aldehydes and ketones
  43. 43Which complex cannot ionise in solution?2020Terminology of coordination compounds
  44. 44Considering the reaction, The signs of and respectively are2020Third law of thermodynamics
  45. 45The product formed when hydroxylamine condenses with a carbonyl compound is called2020Chemical reactions for aldehydes and ketones
  46. 46Which of the following forms a colourless solution in aqueous medium? @@2020Properties of D-block elements
  47. 47When a sulphur sol is evaporated, sulphur is obtained. On mixing with water, sulphur sol is not formed. The sol is2020Colloids
  48. 48An alkyl halide reacts with alcoholic ammonia in a sealed tube, the product formed will be2020Separation of mixture of amines
  49. 49When conc. is heated with , the acid is converted into2020Phosphorus and Its Compounds
  50. 50Entropy of the universe is2020Entropy and Second law of thermodynamics
  51. 51Which of the following salts on being dissolved in water gives at ?2020PH of solutions
  52. 52The reagent used in Clemmenson's reduction is2020Chemical reactions for aldehydes and ketones
  53. 53When is dissolved in water, ions are2020Oxidation and Reduction Reactions
  54. 54The noble gas mixture is cooled in a coconut bulb at . The gases that are not adsorbed are2020Noble Gases
  55. 55The volume of and HCl required to make 1 litre of are2020Theories of Acids and Bases
  56. 56A metal present in insulin is2020Carbonyl Compounds
  57. 57Carbon forms two oxides which have different compositions. The equivalent mass of which remains constant?2020Equivalence concept
  58. 58Maximum number of molecules of I that can react with a molecule of are2020Preparation and Properties of Monohalides
  59. 59Ellingham diagram represents a graph of2020Reduction to Crude Metal
  60. 60Identify the ore not containing iron2020Minerals and ores

Mathematics

  1. 1is equal to2020Logarithm
  2. 2In the group , where , is multiplication modulo 15 , the identity element is2020Questions on number of relations and sets
  3. 3A group has 10 elements. The minimum number of elements of , which are their own inverses is2020Questions on number of relations and sets
  4. 4If and are vectors such that , then the angle between a and b is2020Product of 2 vectors
  5. 5is equal to2020Integration using Partial Fraction
  6. 6If , then a vector perpendicular to and in the plane containing and is2020Plane in Space
  7. 7and are two vectors of magnitudes 5 and 6 respectively. If , then OA is equal to2020Product of 2 vectors
  8. 8A vector perpendicular to the plane containing the points is2020Line and Plane
  9. 9Preview not available - open to view this question.2020Summation of Series
  10. 10The ninth term of the expansion is2020Terms of Binomial Expansion
  11. 11If a is the inverse of , then the value of is2020Inverse of a Matrix
  12. 12If is singular, then the possible values of are2020Basic Algebra of Matrices
  13. 13If , then is equal to2020Adjoint and its Properties
  14. 14If is defined by , then2020Inverse of a Function
  15. 15The value of is2020Expansion of Determinants
  16. 16The number of common tangents to the circles and is,2020Common Tangents
  17. 17If is a tangent to the circle , the values of are2020Tangent to circle
  18. 18The negation of the proposition "If 2 is prime, then 3 is odd" is2020Mathematical Reasoning
  19. 19The equation to two circles which touch the -axis at and make an intercept of 8 units on -axis are2020Equation of Circle & its intercept
  20. 20The orthocent:e of the triangle with vertices is2020Coordinate System
  21. 21, , . If the Radical centre of the above three circles exists, then which of the following cannot be the value of ?2020Radical axis and centre
  22. 22If the circles and cut orthogonally, then the length of the common chord of the circles is2020Common Chord
  23. 23The coordinates of the foot of the perpendicular drawn from the point on the line is2020Point and Line
  24. 24The area enclosed by the pair of lines , the line and is2020Area bounded by Miscellaneous Curves
  25. 25If the area of the auxillary circle of the ellipse is twice the area of the ellipse, then the eccentricity of the ellipse is2020Auxillary Circle
  26. 26A graph has vertices of odd degree and ' ' vertices of even degree. Then which of the following statements is necessarily true?2020Odd and Even Functions
  27. 27If is any point on the ellipse , and and are the foci, then2020Equation of Ellipse
  28. 28The value of is2020Converting one Inverse T function to other Inverse T
  29. 29If is a hyperbola, then which of the following statements can be true?2020Position of point
  30. 30The focus of the parabola is2020standard equation of parabola
  31. 31The solution of is2020Sum of complementary angles
  32. 32is equal to2020Basic Identities & T Ratios
  33. 33The conjugate of the complex number is2020Conjugate, modulus and argument
  34. 34is a triangle with and . The area of the circum circle of the triangle is2020Circle Connected to Triangle
  35. 35If , how many solutions exist such that ?2020Solving Trigonometric Equation
  36. 36The imaginary part of is2020Polar and Euler Form
  37. 37The amplitude of is2020Conjugate, modulus and argument
  38. 38is a triangle, is the centroid, is the mid-point of . If and , then the point is2020Coordinate System
  39. 39is equal to2020Trigonometric and Inverse Trigonometric limits
  40. 40If , then is2020Logarithmic differentiation
  41. 41If , then is2020Differentiation of implicit functions
  42. 42If , then is2020Higher order derivatives
  43. 43If the function is continuous at , then the value of is2020Continuity
  44. 44If are the cube roots of unity, then is equal io2020Cube Root of Unity
  45. 45If , then is2020Logarithmic differentiation
  46. 46The point on the curve , the tangent at which makes an angle with -axis is2020Tangent Normal
  47. 47The length of the subtangent to the curve at is2020Tangent Normal
  48. 48The number of positive divisors of 252 is2020Divisibility Test
  49. 49The remainder obtained when is divided by 124 is2020Remainder and Divisibility Problems
  50. 50Which of the following is not a group with respect to the given operation?2020Odd and Even Functions
  51. 51The range in which is increasing, is2020Monotonicity
  52. 52The value of the integral is2020Properties of Definite Integration
  53. 53and are two roads enclosing an angle of and start from at the same time. travels along with a speed of and travels along with a speed of . T2020Rate Measure Error and Approximation
  54. 54If , then the value of is2020Definite Integration by Substitution
  55. 55The value of is2020Fundamental of Indefinite Integration
  56. 56The value of is2020Integration by Parts
  57. 57The value of is2020Integration using Partial Fraction
  58. 58The area bounded by the curve and the -axis is2020Area of Curve along axis
  59. 59The differential equation of the family of straight lines whose slope is equal to -intercept is2020Formation of Differential Equation
  60. 60The order and degree of the differential equation are respectively2020Order and Degree

Physics

  1. 1Light of frequency falls on a metal surface of work function . The stopping potential of photoelectrons (in V) is2020Photoelectric Effect
  2. 2A proton accelerated through a potential has de-Broglie wavelength . Then, the de-Broglie wavelength of an -particle, when accelerated throu2020Matter Waves
  3. 3Consider a thin spherical shell of radius consisting of uniform surface charge density . The electric field at a point of distance from its 2020Electric Field and Electric Field Lines
  4. 4An electron of an atom transits from to . In which of the following maximum frequency of photon will be emitted?2020Bohr's Atomic Model
  5. 5Two protons are kept at a separation of is the nuclear force and is the electrostatic force between them. Then,2020Electric Charge and Coulomb's law
  6. 6Two radioactive materials and have decay constant and , respectively. If initially they have the same number of nuclei, then the ratio of th2020Radioactivity
  7. 7The Poisson's ratio of a material is . If the longitudinal strain of a rod of this material is , then the percentage change in the volume of2020Bulk Modulus
  8. 8A satellite can be in a geostationary orbit around a planet if it is at a distance from the centre of the planet. If the planet starts rotat2020Gravitational field
  9. 9When a - junction diode is connected in forward bias, its barrier potential2020Semiconductors
  10. 10Ground waves have wavelength2020Communication System
  11. 11A ball floats on the surface of water in a container exposed to the atmosphere. When the container is covered and the air is partially remov2020Pressure and thrust
  12. 12A frame made of metallic wire enclosing a surface area is covered with a soap film. If the area of the frame of metallic wire is reduced by 2020Surface tension
  13. 13A compound slab is made of two parallel plates of copper and brass of the same thickness and having thermal conductivities in the ratio . Th2020Conduction
  14. 14of a gas is compressed at 1 atmospheric pressure and temperature to . What is the final pressure under adiabatic condition? for the gas )2020Thermodynamic Processes
  15. 15If is at a temperature of and source at , then efficiency will be2020Heat Engine, Refrigerator and Second Law of Thermodynamics
  16. 16Which of the following laws of Physics is valid across all domains of nature?2020Newton's laws of motion
  17. 17A particle of mass is moving in a horizontal circle of radius under a centripetal force equal to constant . The total energy of the particle2020Non-uniform Circular Motion
  18. 18A force of is applied on a body of mass resting on a horizontal plane. The body gains a kinetic energy of after it moves a distance . The fr2020Frictional force
  19. 19A body under the action of a force , acquires an acceleration of . The mass of this body must be2020Newton's laws of motion
  20. 20A body of mass is moving horizontally with a velocity . A mass of is added. Find the final velocity.2020momentum
  21. 21Equal volumes of two gases, having their densities in the ratio of exert equal pressures on the walls of two containers. The ratio of their 2020Speed of Gas
  22. 22A gaseous mixture consists of of helium and of oxygen. The ratio of the mixture is2020Degree of Freedom and Specific Heat
  23. 23A partiele exeeutes a linear SHM with an amplitude of . At the mean position the velocity of the particle is . What is the displacement of t2020Simple Harmonic Motion
  24. 24The equation of a progressive wave can be given by . The frequency of the wave is2020Basics of Mechanical Waves
  25. 25A source of sound gives 5 beats per second, when sounded with another source of frequency . The second harmonic of the source, together with2020Beats
  26. 26A charge of is divided into two charges and . These are kept at a separation of . The force on is maximum when2020Electric Charge and Coulomb's law
  27. 27An electric dipole has a pair of equal and opposite point charges and separated by a distance . The axis of the dipole is defined as2020Electric Dipole
  28. 28An electric dipole is placed in a uniform electric field with the dipole axis making an angle with the direction of the electric field. The 2020Electric Dipole
  29. 29Two point charges and are placed apart in air. The work done to move charge towards by is2020Electric Potential and Potential Energy
  30. 30The potential energies associated with four orientations of an electric dipole in an electric field are (i) (ii) (iii) (iv) where is positiv2020Electric Dipole
  31. 31Suppose refractive index is given as , where and are constants and is wavelength, then dimensions of are same as that of2020Prism and Dispersion of Light
  32. 32If voltage and current , then the percentage error in resistance is2020Errors of Measurement
  33. 33A body is projected vertically upwards. The times corresponding to height , while ascending and while descending are and , respectively. The2020Projectile motion
  34. 34A particle shows distance-time curve as given in this figure. The maximum instantaneous velocity of the particle is around the point2020Graphs of motion in one dimension
  35. 35A fluid is in streamline flow across a horizontal pipe of variable area of cross-section. For this which of the following statements is corr2020Hydrodynamics
  36. 36Two capacitors and are charged to and , respectively. When they are connected in parallel, it is found that potential on each one of them is2020Grouping of capacitors
  37. 37Point out the right statements about the validity of Kirchhoff's junction rule,2020Kirchoffs Laws
  38. 38Four particles each of the mass are placed at the corners of a square of side length . The radius of gyration of the system about an axis pe2020Moment of inertia of rigid bodies
  39. 39A steel wire of length and cross-sectional area stretches by the same amount as a copper wire of length and cross-sectional area of under a 2020Young's Modulus and Breaking Stres
  40. 40The masses of and are attached to the and marks of a light meter rod, respectively. The moment of inertia of the system about an axis passin2020Moment of inertia of rigid bodies
  41. 41Two spherical bodies of masses and and radii and are released in free space with initial separation between their centres equal to . If they2020Gravitational potential and Potential Energy
  42. 42If and , then what resistance should be joined with to balance the Wheatstone's network?2020Wheatstone Bridge
  43. 43To the potentiometer wire of length and resistance, a battery of emf and a resistance are connected in series. If a potential difference of 2020Electric Instruments
  44. 44An electron moves with speed of along the positive -direction in a magnetic field . The magnitude of the force (in N) experienced by the ele2020Motion of Charged Particle in Magnetic Field
  45. 45A horizontal overhead power line carries a current of in East to West direction. What is the magnitude and direction of the magnetic field d2020Magnetic Field
  46. 46A moving coil galvanometer has 28 turns and area of coil is . If the magnetic field is , then to increase the sensitivity by without changin2020Force and Torque on Current Carrying Conductor
  47. 47The intensity of magnetic field due to an isolated pole of strength at a point distant from it will be2020Magnetism and Properties of Magnet
  48. 48The particle that cannot be accelerated by a cyclotron is2020Motion of Charged Particle in Magnetic Field
  49. 49The angle which the total magnetic field of earth makes with the surface of the earth is called2020Earths magnetic field
  50. 50The angle of dip of at a place where horizontal and vertical components of earth's magnetic field are equal is2020Earths magnetic field
  51. 51A coil of wire of a certain radius has 100 turns and a self inductance of . The self inductance of a second similar coil of 500 turns will b2020Self and Mutual Inductance
  52. 52A coil of 100 turns carries a current of and creates a magnetic flux of . The inductance2020Inductance
  53. 53In stcp-up transformer, relation between number of turns in primary and number of turns in secondary coils is2020Transformers
  54. 54For a series circuit at resonance, which statement is not true?2020AC Circuits
  55. 55Which of the following has/have zero average value in a plane electromagnetic wave?2020Electromagnetic Waves and Maxwell's equations
  56. 56A convex lens is made of 3 layers of glass of 3 different materials as in the figure. A point object is placed on its axis. The number of im2020Combination of Lens and Mirrors
  57. 57A ray of light suffers minimum deviation in equilateral prism . Additional prisms and of identical shape and of same material as that of are2020Prism and Dispersion of Light
  58. 58Two identical light waves, propagating in the same direction, have a phase difference . After they superpose the intensity of the resulting 2020Interference of Light
  59. 59A plastic sheet (refractive index ) covers one slit of a double slit arrangement for the Young's experiment. When the double slit is illumin2020Youngs Double Slit Experiment
  60. 60A particle starts moving from point . Displacement for the particle is . The final coordinates of the particle is2020Uniform Motion

Frequently Asked Questions

1.How many questions are in the COMEDK 2020 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.How is the COMEDK 2020 paper structured?

The COMEDK 2020 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.How difficult is the COMEDK 2020 paper?

Each question on MARKS carries a difficulty rating. Of the 180 rated questions in this paper, 74 (41%) are easy, 86 (48%) are medium and 20 (11%) are hard. Subject wise:

  • Chemistry: 22 easy, 34 medium, 4 hard
  • Mathematics: 27 easy, 25 medium, 8 hard
  • Physics: 25 easy, 27 medium, 8 hard
5.Which chapters were asked the most in the COMEDK 2020 paper?

The chapters with the most questions in each subject were:

  • Chemistry: General Organic Chemistry (8), Coordination Compounds (5), and d and f Block Elements (5).
  • Mathematics: Circle (5), Application of Derivatives (4), and Complex Number (4).
  • Physics: Electrostatics (7), Laws of Motion (4), and Magnetic Effects of Current (4).
6.Where can I find the solutions for the COMEDK 2020 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 2020 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 2020 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.