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COMEDK 2015

Browse the complete Chemistry, Mathematics, and Physics question set from the COMEDK 2015 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 - 100 easy (56%), 60 moderate (33%) 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 60% easy, 28% moderate, 12% tough; Chemistry 53% easy, 35% moderate, 12% tough; Mathematics 53% easy, 37% moderate, 10% tough.

Chemistry questions were spread across 27 chapters, with p Block Elements (Group 15, 16, 17 & 18) (7), Biomolecules (4), and Chemical Bonding and Molecular Structure (4) carrying the most weight. Mathematics questions were spread across 24 chapters, with Application of Derivatives (4), Area Under Curves (4), and Definite Integration (4) carrying the most weight. Physics questions were spread across 29 chapters, with Electrostatics (5), Magnetic Effects of Current (4), and Alternating Current (3) carrying the most weight.

Chemistry

  1. 1of acetic acid reacts with of ethyl alcohol to form ethyl acetate. The density of acid and alcohol are and respectively. The limiting reagen2015Quantitative measures in chemical equations
  2. 2The mass of oxygen gas which occupies at STP would be2015Mole concept
  3. 3Energy associated with the first orbit of is2015Bohr's model
  4. 4Pick the incorrect statement among those given below.2015Molecular Orbital Theory
  5. 5For one mole of the lattice enthalpy is2015Ionic bond
  6. 6An endothermic reaction is found to have + ve entropy change. The reaction will be2015Third law of thermodynamics
  7. 7For an adiabatic change in a system, the condition which is applicable will be2015First Law and Basic Fundamentals of Thermodynamics
  8. 8Which of the following equations give ionic product of water? I. II. III. IV.2015Ionic Product of Water
  9. 9The number of ions present in of a solution whose is 132015PH of solutions
  10. 10Strongest reducing agent among the following is I. II. III. IV.2015Cells and Electrode Potential, Nernst Equation
  11. 11Choose the correct statement applicable for the reaction:2015Halogens and Its Compounds
  12. 12Decomposition of hydrogen peroxide can be prevented by adding2015Chemical properties of hydrogen peroxide
  13. 13is an important component of2015Properties of S-block elements
  14. 14Which is true about the lead ions in ?2015Phosphorus and Its Compounds
  15. 15Which of the following chemicals does not liberate hydrogen gas on reaction with aluminium metal?2015Nitrogen and Its Compounds
  16. 16The decreasing order of reactivity towards electrophilic substitution of the following compounds is2015Preparation and Properties of Benzene
  17. 17An organic compound weighing gave on Carius estimation, gf . The percentage of Br in the compound will be close to (Atomic mass of Ag )2015Quantitative analysis of organic compounds
  18. 18Identify the correct IUPAC name of the following compound.2015IUPAC Nomenclature
  19. 19Identify the main product in the following reaction.2015Reactions of Alcohols
  20. 20BOD is a measure of2015Water Pollution
  21. 21If same type of atoms are packed in hexagonal close packing and cubic close packing separately, then2015Cubic system
  22. 22Silicon doped with arsenic is2015Silicon and Its Compounds
  23. 23Which of the following compounds have the same value of van't Hoff s factor as that of ?2015Colligative Properties and Abnormal Molecular Masses
  24. 24The standard electrode potential for Daniell cell is . What is the standard Gibbs energy for the reaction?2015Cells and Electrode Potential, Nernst Equation
  25. 25The cathode reaction in the dry cell will be2015Commercial Cells and Batteries
  26. 26for and are 130,248 and respectively. The of will be2015Conductance and Conductivity
  27. 27In a chemical reaction i.e., products, when concentration of is doubled, rate of the reaction increases 4 times and when concentration of al2015Methods to determine order of reaction
  28. 28Zeolites are shape selective structures because of2015Aluminium and Its Compounds
  29. 29Sulphur sol is a type of2015Colloids
  30. 30The magnetite ore is2015Minerals and ores
  31. 31In the metallurgy of aluminium, when the fused matrix is electrolysed, the overall reduction reaction is2015Reduction to Crude Metal
  32. 32Carbon monoxide forms volatile compound with2015Refining of Crude Metal
  33. 33Which of the following reactions does not produce ?2015Phosphorus and Its Compounds
  34. 34The decreasing order of stability of oxides of halogen is2015Halogens and Its Compounds
  35. 35does not show property of catenation because2015Nitrogen and Its Compounds
  36. 36Hybridised state of bromine in bromine pentafluoride is2015Hybridisation and VSEPR Theory
  37. 37An element belonging to chalcogen group is2015Sulphur and Its Compounds
  38. 38More number of oxidation state are exhibited by the actinoids, than by lanthanoids. The main reason for this is2015Properties of D-block elements
  39. 39A transition elements with atomic number 24 will have its magnetic moment2015Properties of D-block elements
  40. 40In tetrahedral permanganate ion -bonding type between metal and oxygen is2015Covalent and Co-ordinate Bonding
  41. 41Which of the following pairs has the same size?2015Properties of D-block elements
  42. 42is a system, the value of crystal field stabilisation energy decreases by2015Crystal Field Theory
  43. 43Among the complexes of Ni listed below, the following is the only correct statement about the given compounds. I. II. III.2015Crystal Field Theory
  44. 44The formula for sodium trioxalatoaluminate (III) is2015Nomenclature of coordination compounds
  45. 45Which one of the following coordination entity is chiral?2015Isomerism of coordination compounds
  46. 46Which of the following compounds is responsible for depletion of ozone layer?2015Air Pollution
  47. 47Ethanol, when warmed with iodine and sodium carbonate gives a yellow coloured crystalline solid, which is used in preparation of antiseptic 2015Tests for aldehyde and ketones
  48. 48Consider the acid strength of the carboxylic acids. III. IV.2015Preparation and Properties of Carboxylic Acids
  49. 49Which of the following is the correct sequence of relative acidic strength?2015Preparation and Properties of Carboxylic Acids
  50. 50A mixture of methylamine and dimethyl amine is given to you. The reagents used to separate the components of the mixture are2015Separation of mixture of amines
  51. 51Gabriel phthalimide synthesis is used for the preparation of2015Preparation and Properties of Amines
  52. 52The correct increasing order of basic strength of following amines, in gaseous state is2015Preparation and Properties of Amines
  53. 53The sequence of bases on RNA molecule synthesise on the GCATA strand of DNA is2015Nucleic Acids
  54. 54-helix and -pleated structures of proteins are classified as2015Nucleic Acids
  55. 55Which statement is not true for describing enzymes?2015Properties and Preparation of Amino Acids
  56. 56Which of the following are monosaccharides?2015Carbohydrates
  57. 57Nylon- 6,6 is an example of a polymer formed by2015Preparation and Properties of Polymers
  58. 58Which of the following will form a biodegradable polymer?2015Preparation and Properties of Polymers
  59. 59Detergents can be made biodegradable and pollution free by2015Cleansing Agents
  60. 60Sodium rosinate is generally added in the soap because it2015Cleansing Agents

Mathematics

  1. 1If two sets and have 99 elements in common, then the number of elements common to the sets and is2015Questions on number of relations and sets
  2. 2If and , then which of the following is true?2015Composite Function
  3. 3The number of bijective functions from the set A to itself, if contains 108 elements is2015Types of Function (Mapping)
  4. 4If a class of 175 students the following data shows the number of students opting one or more subjects. Mathematics 100 , Physics 70 , Chemi2015Questions on Venn Diagram
  5. 5If a set has 4 elements, then the total number of proper subsets of set , is2015Questions on number of relations and sets
  6. 6If and , then is2015Sum and difference of angles
  7. 7Preview not available - open to view this question.2015T inverse T property
  8. 8is equal to2015Converting one Inverse T function to other Inverse T
  9. 9The number of solutions of the equation is2015Basic Identities & T Ratios
  10. 10is equal to2015Basic Identities & T Ratios
  11. 11In a2015Sum and Difference & Multiple angle Formula
  12. 12Amplitude of the complex number is2015Conjugate, modulus and argument
  13. 13Given, 5 line segments of lengths units. Then, the number of triangles that can be formed by joining these segments is2015Combination
  14. 14How many numbers greater than 1000000 be formed from ?2015Permutation
  15. 15The expression is a polynomial in of degree2015Terms of Binomial Expansion
  16. 16If in the expansion of , the coefficient of and are 8 and 24 , then2015Terms of Binomial Expansion
  17. 17is2015Summation of Series
  18. 18The medians and of a triangle with vertices and are perpendicular to each other, if2015Angle between Lines
  19. 19Let and be non-zero real such that . Then, the equation of the line passing through the origin and the point of intersection of and is2015Concurrency & Family of Lines
  20. 20A straight lines meets the coordinates axes at and , so that the centroid of the is . Then, the equation of the line is2015Coordinate System
  21. 21The direction ratios of the line which is perpendicular to the lines and are2015Direction Cosines and Direction Ratios
  22. 22A line making angles and with the positive directions of the axis of and , makes with the positive direction of -axis, an angle of2015Direction Cosines and Direction Ratios
  23. 23The shortest distance between the lines and is2015Line in Space
  24. 24Preview not available - open to view this question.2015Algebraic and Rational Limits
  25. 25If , then at is2015Functional Equation
  26. 26The slant height of a cone is fixed at . If the rate of increase of its height is , then the rate of increase of its volume when its height 2015Rate Measure Error and Approximation
  27. 27A ladders long is leaning against a wall. The bottom of the ladder is pulled along the ground away from the wall, at the rate of . The speed2015Rate Measure Error and Approximation
  28. 28The angle between the curve and is2015Tangent to Parabola
  29. 29The maximum area in square units of an isosceles triangle inscribed in an ellipses with its vertex at one end of the major axis is2015Maxima Minima
  30. 30If for all and and , then is2015Functional Equation
  31. 31If , then at is2015Functional Equation
  32. 32The value of in Lagrange's mean value theorem for the function in the interval is2015Mean Value Theorem
  33. 33Preview not available - open to view this question.2015Properties of Definite Integration
  34. 34The value of the integral is2015Properties of Definite Integration
  35. 35Preview not available - open to view this question.2015Integration using Partial Fraction
  36. 36If , then2015Fundamental of Indefinite Integration
  37. 37If , then is equal to2015Properties of Definite Integration
  38. 38Area bounded by the curve , the -axis and the ordinates at and , is2015Area bounded by two curves
  39. 39The area in square units bounded by the normal at to the parabola -axis and the curve is given by2015Area bounded by two curves
  40. 40Area bounded by the -axis, , when is2015Area bounded by two curves
  41. 41The area in square units of the region bounded by and is2015Area bounded by two curves
  42. 42Preview not available - open to view this question.2015Definite Integration by Parts
  43. 43The differential equation of the family of parabolas , where is parameter, is2015Formation of Differential Equation
  44. 44If , then2015Homogeneous DE
  45. 45The general solution of the differential equation , where is a given function of is2015Linear Differential Equation
  46. 46The product of the degree and order of the differential equation is2015Order and Degree
  47. 47Given, two vectors and . The unit vector, coplanar with the two given vectors and perpendicular to is2015Algebra of Vectors
  48. 48If a, be are three non-zero vectors such that each one of them are perpendicular to the sum of the other two vectors, then the value of is2015Product of 2 vectors
  49. 49If and are 2 matrices such that and , then is equal to2015Basic Algebra of Matrices
  50. 50If are in , then the value of the determinant is2015Expansion of Determinants
  51. 51If , then is2015Expansion of Determinants
  52. 52If and , then2015Expansion of Determinants
  53. 53An urn contains 9 balls, 2 of which are white, 3 blue and 4 black. 3 balls are drawn at random from the urn. The chance that 2 balls will be2015Total Probability
  54. 546 boys and 6 girls in a row at random. The probability that all the girls sit together is2015Classical Definition of Probability
  55. 55Three dice are rolled once. The chance of getting a score of 5 is2015Classical Definition of Probability
  56. 56A bag contains 3 white, 4 black, 2 red balls. If 2 balls are drawn at random, then the probability that both the balls are white is2015Classical Definition of Probability
  57. 57The solution of is2015Inequalities
  58. 58If , then acceleration is2015Derivative of function and its inverse
  59. 59The mean and variance for the data , respectively are2015Relation Between Variance and Mean Deviation
  60. 60If the conjugate of is , then2015Conjugate, modulus and argument

Physics

  1. 1A uniform circular disc of mass and radius is rotated about one of its diameter at an angular speed of . The kinetic energy of the disc is2015Rotational kinematics
  2. 2Several lamps of and rating are available. How many of them can be connected in parallel across a battery of a of internal resistance , so t2015Electric Power and Heating Effect of Current
  3. 3A stone weight on the surface of the earth. The ratio of its weight at a height of half the radius of the earth to a depth of half the radiu2015Acceleration Due to Gravity
  4. 4The gravitational field strength at the surface of a certain planet is . Which of the following is the gravitational field strength at the s2015Gravitational field
  5. 5A crane with a steel cable of length and radius is employed to lift a block of concrete of mass 40 tons in a building site. If the Young's m2015Young's Modulus and Breaking Stres
  6. 6and are respectively the current and voltage in a metal wire of resistance . The graph for the two different temperatures and given, then2015Electric Current and Drift of Electrons
  7. 7A charged particle moves in a uniform magnetic field. The velocity of the particle at some instant makes an acute angle with the magnetic fi2015Motion of Charged Particle in Magnetic Field
  8. 8A certain length of insulated wire can be bent to form either a single circular loop (case I) or a double loop of smaller radius (case II). 2015Magnetic Field
  9. 9Inside a cyclotron, a charged particle is subjected to both an electric field and a magnetic field. It gains kinetic energy due to the2015Motion of Charged Particle in Magnetic Field
  10. 10The graph showing the variation of the magnetic field strength with distance from a long current carrying conductor is2015Magnetic Field
  11. 11The temperature at which centigrade and Fahrenheit scales give the same reading, is2015Thermometry
  12. 12The correct definition of Meissner effect is2015Magnetic Materials and their Properties
  13. 13A jet plane is travelling west at . If the horizontal component of earth's magnetic field is and angle of dip is , then the vertical compone2015Earths magnetic field
  14. 14A bicycle generator crcates at . The cmf generated at is2015Motional and Rotational EMF
  15. 15The instantaneous voltage of a generator giving peak voltage as , The generator equation for this voltage is2015Alternating Current, Voltage and Power
  16. 16A transformer is used to light a lamp from a supply. If the supply current is , then the efficiency of the transformer is2015Transformers
  17. 17If instantaneous current is given by , then the rms value of current is2015Alternating Current, Voltage and Power
  18. 18If the surface is a perfect reflector, then the change in momentum of the wave after falling on the surface is2015momentum
  19. 19A person sitting firmly over a rotating stool has his arms stretched. If he folds his arms, his angular momentum about the axis of the rotat2015Angular momentum and Angular impulse
  20. 20The temperature of two bodies and are and respectively, the ratio of the rates of heat radiated by them is2015Radiation
  21. 21The refractive index and the permeability of a medium are respectively and . The relative permittivity of the medium is nearly2015Electromagnetic Waves and Maxwell's equations
  22. 22All lights are switched off, except for a bright point-light source kept at the bottom of a swimming pool filled with clear water of refract2015Critical angle and total internal reflection
  23. 23An equiangular glass prism of refractive index is kept fully immersed in water of refractive index , for a certain ray of monochromatic ligh2015Prism and Dispersion of Light
  24. 24A concave mirror gives an image three times as large as its object placed at a distance of from it. For the image to be real, the focal leng2015Mirror Formula, Reflection in Spherical Mirror
  25. 25Two coherent monochromatic light beams of intensities and are superimposed. The maximum and minimum possible resulting intensities are2015Interference of Light
  26. 26The momentum of electrons having a wavelength (given, -s, is2015Matter Waves
  27. 27The photoelectric current of voltage in a certain experiment is . What is the maximum kinetic energy of photoelectrons emitted?2015Photoelectric Effect
  28. 28The best waves for emission of electrons from a surface are2015Electromagnetic Spectrum
  29. 29The shortest wavelengths of Paschen, Balmer and Lyman series are in the ratio2015Atomic Spectrum
  30. 30A sample of a radioactive element whose half-life is 30 s contains a million nuclei at a certain instant of time. How many nuclei will be le2015Radioactivity
  31. 31A nuclear fission is said to be critical when multiplication factor or2015Nuclear reactions
  32. 32In case of a junction diode at high value of reverse bias, the current rises sharply. The value of reverse bias is known as2015Diodes
  33. 33The truth table of a logic gate is given below {array}{cc|c} {2}{c|}{ Input } & Output \\ {A} & {B} & {Y} \\ 0 & 0 & 1 \\ 0 & 1 & 1 \\ 1 & 02015Logic gates
  34. 34In a semiconductor diode, the reverse biased current is due to drift of the free electrons and holes caused by2015Diodes
  35. 35A TV tower is high. How much more height is to be added to it, if its coverage range is to become double?2015Modulation
  36. 36A message signal of frequency and peak value of is used to moderate a carrier of frequency and peak voltage . The modulation index and side 2015Modulation
  37. 37Vector has a magnitude of 10 units and makes an angle of with the positive -axis. Vector has a magnitude of 20 units and makes an angle of w2015Addition and Subtraction of Vectors
  38. 38A uniform chain of length is lying partly on a table, the remaining part hanging down from the edge of the table. If the coefficient of fric2015Frictional force
  39. 39A bomb of mass at rest explodes into two pieces of masses and . The velocity of mass is . The kinetic energy of the other mass is2015momentum
  40. 40A soap bubble of radius is blown up to form a bubble of radius under isothermal conditions. If is the surface tension of soap solution, then2015Surface tension
  41. 41The diagram shows a barrel of weight on a frictionless slope inclined at to the horizontal. The force is parallel to the slope. What is the 2015Rolling without Slipping
  42. 42A mass lying on a table is displaced in the horizontal direction through . The work done by the normal reaction will be2015Work done
  43. 43The dimensions of four wires of the same material are given below. In which wire the increase in length will be maximum when the same tensio2015Young's Modulus and Breaking Stres
  44. 44Under a constant pressure head, the rate of flow of orderly volume flow of liquid through a capillary tube is . If the length of the capilla2015Hydrodynamics
  45. 45A ball is dropped from the top of the building high. Simultaneously, another ball is thrown upwards from the bottom of the building with suc2015Motion Under Gravity
  46. 46In an isochoric process2015Thermodynamic Processes
  47. 47The average energy of molecules in a sample of oxygen gas at is . The corresponding values at are2015Pressure and Energy of gas
  48. 48A mass is suspended from a light spring. An additional mass added displaces the spring further by a distance . Now, the combined mass will o2015Time Period and Frequency
  49. 49A collar is attached to a spring (spring constant ), it slides without friction over a horizontal rod. The collar is displaced from its equi2015Simple Harmonic Motion
  50. 50A body of mass starting from origin with initial velocity of . If a constant force of acts on it, find the coordinate of point it reaches in2015Newton's laws of motion
  51. 51A steel wire has a length of which is under a constant tension of . The speed of the transverse waves that can be produced in the wire will 2015Travelling Waves
  52. 52The number of electrons in of charges is2015Electric Charge and Coulomb's law
  53. 53An electric dipole consists of two opposite charges, each of magnitude separated by a distance of . The dipole is placed in an external fiel2015Electric Dipole
  54. 54Two small charged spheres and have charges and respectively and are held at separation of from each other. At what distance from , electric 2015Electric Field and Electric Field Lines
  55. 55A charge is placed at the centre of a cube. The electric flux passing through the cube is2015Electric Flux and Gauss Law
  56. 56A parallel plated capacitor has area separated by 3 dielectric slabs. Their relative permittivity is and thickness is , , respectively. The 2015Capacitors with Dielectric
  57. 57A particle has charge and particle has charge , each of them having the same mass . When allowed to fall from rest through the same electric2015Electric Potential and Potential Energy
  58. 58A body accelerates from rest with a uniform acceleration for a time . The uncertainty in is and the uncertainty in is . The uncertainty in t2015Matter Waves
  59. 59A parallel plate capacitor has a capacity . The separation between the plates is doubled and a dielectric medium is inserted between the pla2015Capacitors with Dielectric
  60. 60Two resistances and have colour codes orange, blue, white and brown, red, green, respectively. Then, ratio of their resistances is2015Color coding of resistors

Frequently Asked Questions

1.How many questions are in the COMEDK 2015 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 2015 paper structured?

The COMEDK 2015 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 2015 paper?

Each question on MARKS carries a difficulty rating. Of the 180 rated questions in this paper, 100 (56%) are easy, 60 (33%) are medium and 20 (11%) are hard. Subject wise:

  • Chemistry: 32 easy, 21 medium, 7 hard
  • Mathematics: 32 easy, 22 medium, 6 hard
  • Physics: 36 easy, 17 medium, 7 hard
5.Which chapters were asked the most in the COMEDK 2015 paper?

The chapters with the most questions in each subject were:

  • Chemistry: p Block Elements (Group 15, 16, 17 & 18) (7), Biomolecules (4), and Chemical Bonding and Molecular Structure (4).
  • Mathematics: Application of Derivatives (4), Area Under Curves (4), and Definite Integration (4).
  • Physics: Electrostatics (5), Magnetic Effects of Current (4), and Alternating Current (3).
6.Where can I find the solutions for the COMEDK 2015 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 2015 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 2015 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.