Jump to a section

MHT CET 2017

Browse the complete Chemistry, Mathematics, and Physics question set from the MHT CET 2017 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 150 questions in total - 67 easy (45%), 71 moderate (47%) and 12 tough (8%). That's an easier-than-usual mix for this exam - aim to clear it quickly and save time for the harder papers. By subject: Chemistry 50% easy, 42% moderate, 8% tough; Mathematics 50% easy, 40% moderate, 10% tough; Physics 34% easy, 60% moderate, 6% tough.

Chemistry questions were spread across 23 chapters, with Thermodynamics (C) (4), Alcohols Phenols and Ethers (3), and Aldehydes and Ketones (3) carrying the most weight. Mathematics questions were spread across 17 chapters, with Three Dimensional Geometry (7), Probability (5), and Application of Derivatives (4) carrying the most weight. Physics questions were spread across 24 chapters, with Waves and Sound (6), Oscillations (5), and Rotational Motion (5) carrying the most weight.

Chemistry

  1. 1The work done during combustion of 9 × 10 - 2 k g of ethane, C 2 H 6 (g) at 300 K is (Given R = 8.314 J K − 1 m o l − 1 , atomic mass C = 122017First Law and Basic Fundamentals of Thermodynamics
  2. 2What type of sugar molecule is present in DNA?2017Nucleic Acids
  3. 3The molality of solution containing 15.20 g of urea, (molar mass = 60) dissolved in 150 g of water is2017Concentration terms
  4. 4The acid which contains both -OH and -COOH groups is2017Preparation and Properties of Carboxylic Acids
  5. 5Identify the compound in which phosphorus exists in the oxidation state of +1.2017Phosphorus and Its Compounds
  6. 6Identify the weakest oxidizing agent among the following.2017General Characteristics of Alkali Metals
  7. 7The monomers used in preparation of dextron are2017Preparation and Properties of Polymers
  8. 8Which among the following compounds does not act as a reducing agent?2017Oxidation and Reduction Reactions
  9. 9Which of the following process is NOT used to preserve the food?2017Artificial Sweetning Agents and Food Preservatives
  10. 10In case of substituted aniline the group which decreases the basic strength is2017Preparation and Properties of Amines
  11. 11(+) 2-Methylbutan-1-ol and (-) 2- Methylbutan-1-ol have different values for which property?2017Preparation and Properties of Alcohols
  12. 12Which among the following is NOT a mineral of iron?2017Minerals and ores
  13. 13Nitration of which among the following compounds yields cyclonite?2017Chemical reactions for aldehydes and ketones
  14. 14Calculate the work done during compression of 2 mol of an ideal gas from a volume of 1 m 3 to 10 d m 3 at 300 K against a pressure of 100 KP2017First Law and Basic Fundamentals of Thermodynamics
  15. 15Which element among the following does form P π - P π multiple bonds?2017Hybridisation and VSEPR Theory
  16. 16Which of the following statements is incorrect in case of Hofmann bromamide degradation?2017Preparation and Properties of Amines
  17. 17Which of the following statements is incorrect for pair of elements Zr - Hf?2017F-Block elements
  18. 18Aldehydes or ketones when treated with C 6 H 5 - N H - N H 2 , the product formed is2017Chemical reactions for aldehydes and ketones
  19. 19Solubility of which among the following solids in water changes slightly with temperature?2017General Characteristics of Alkali Metals
  20. 20What is the quantity of hydrogen gas liberated when 46 g sodium reacts with excess ethanol? (Given Atomic mass of Na = 23)2017Mole concept
  21. 21Tert-butyl methyl ether on treatment with hydrogen iodide in cold gives2017Reactions of Ethers
  22. 22Name the process that is employed to refine aluminium.2017Extraction of Metals
  23. 23The colour and magnetic nature of manganate ion M n O 4 2- is-2017Crystal Field Theory
  24. 24The osmotic pressure of solution containing 34.2 g of cane sugar (molar mass = 342 g m o l − 1 in 1L of solution at 20 o C is ( G i v e n , 2017Colligative Properties and Abnormal Molecular Masses
  25. 25In assigning R-S configuration which among the following groups has highest priority?2017Isomerism of Organic Compounds
  26. 26Which of the following is used as antiseptic?2017Drugs and It's Classification
  27. 27In preparation of sulphuric acid from Sulphur dioxide in lead chamber process. What substance is used as a catalyst?2017Properties of D-block elements
  28. 28The correct charge and co-ordination number of ‘ Fe ’ in K 3 F e C N 6 is2017Terminology of coordination compounds
  29. 29Which among the following reactions is can be an example of pseudo first order reaction?2017Rate of reaction
  30. 30The amine which reacts with p-toluene sulphonyl chloride to give a clear solution which on acidification gives insoluble compound is2017Preparation and Properties of Amines
  31. 31Which among the following equations represents Arrhenius equation?2017Arrhenius theory
  32. 32Which of the following compound will give positive iodoform test?2017Tests for Aldehyde and Ketones
  33. 33The first law of thermodynamics for isothermal process is2017First Law and Basic Fundamentals of Thermodynamics
  34. 34The conversion of ethyl bromide to ethyl iodide using sodium and dry acetone, this reaction is known as2017Preparation and Properties of Monohalides
  35. 35What is the hybridization of carbon atoms in fullerene?2017Carbon and Its Compounds
  36. 36What is the SI unit of conductivity?2017Conductance and Conductivity
  37. 37Which of the following is Baeyer's reagent?2017Compounds of Transition Metals
  38. 38What is the chief constituent of pyrex glass?2017Silicon and Its Compounds
  39. 39Which of the following compounds has lowest boiling point?2017Preparation and Properties of Alcohols
  40. 40Identify the INVALID equation.2017First Law and Basic Fundamentals of Thermodynamics
  41. 41The rate constant for a first order reaction is 7.0 × 10 - 4 s - 1 . If initial concentration of the reactant is 0.080 M, what is the half-l2017Rate law and rate constant
  42. 42The polymer used in making handles of cookers and frying pans is2017Preparation and Properties of Polymers
  43. 43Which halogen has the highest value of negative electron gain enthalpy?2017Periodic properties
  44. 44What is the actual volume occupied by water molecules present in 20 c m 3 of water?2017Quantitative measures in chemical equations
  45. 45Which of the following co-ordinate complexes is an exception to EAN rule? (Given At. Number Pt = 78, Fe = 26, Zn = 30, Cu = 29)2017Terminology of coordination compounds
  46. 46Which among the following equations represents the reduction taking place in lead accumulator at positive electrode, While it is being used 2017Cells and Electrode Potential, Nernst Equation
  47. 47For which among the following equimolar aqueous solutions Van't Hoff factor has the lowest value?2017Colligative Properties and Abnormal Molecular Masses
  48. 48The amino acid which is basic in nature is2017Properties and Preparation of Amino Acids
  49. 49Which element among the following does NOT form diatomic molecules?2017Noble Gases
  50. 50A molecule of Stachyose contains how many carbon atoms?2017Preparation and Reactions of Glucose

Mathematics

  1. 1The number of principle solutions of tan ⁡ 2 θ = 1 is2017Solving Trigonometric Equation
  2. 2The objective function Z = 4 x 1 + 5 x 2 , subject to 2 x 1 + x 2 ≥ 7 , 2 x 1 + 3 x 2 ≤ 15 , x 2 ≤ 3 , x 1 , x 2 ≥ 0 has minimum value at th2017Area bounded by Miscellaneous Curves
  3. 3If z 1 and z 2 are the z − coordinates of the points of trisection of the line segment joining the points A ( 2 , 1 , 4 ) and B ( − 1 , 3 , 2017Basics of point in 3 dimension
  4. 4The maximum value of f x = log ⁡ x x ( x ≠ 0 , x ≠ 1 ) is2017Maxima Minima
  5. 5∫ 0 1 x tan - 1 ⁡ x d x =2017Definite Integration by Substitution
  6. 6The statement pattern ( ∽ p ∧ q ) is a logically equivalent to2017Mathematical Reasoning
  7. 7If g ( x ) is the inverse function of f ( x ) and f ′ ( x ) = 1 1 + x 4 , then g ′ ( x ) is2017Derivative of function and its inverse
  8. 8The inverse of the matrix 1 0 0 3 3 0 5 2 - 1 is2017Inverse of a Matrix
  9. 9If ∫ 1 9 - 16 x 2 d x = α sin - 1 ⁡ ( β x ) + c , then α + 1 β =2017Integration by Substitution
  10. 10O ( 0 , 0 ) , A ( 1 , 2 ) , B ( 3 , 4 ) are the vertices of ∆ O A B . The joint equation of the altitude and median drawn from O is2017general equation of second degree
  11. 11If the function f x = tan ⁡ π 4 + x 1 x f o r x ≠ 0 K f o r x = 0 is continuous at x = 0 , then k = ?2017Continuity
  12. 12For a invertible matrix A if A ( a d j A ) = [ 10 0 0 10 ] , then | A | =2017Adjoint and its Properties
  13. 13The solution of the differential equation d y d x = tan ⁡ y x + y x is2017Variable Separable Form
  14. 14In Δ A B C if sin 2 ⁡ A + sin 2 ⁡ B = sin 2 ⁡ C and l A B = 10 , then the maximum value of the area of Δ A B C is2017Napiers Analogy, Area of Triangle & Half angle Formulae
  15. 15If x = f ( t ) and y = g ( t ) are differentiable functions of t then d 2 y d x 2 is2017Derivative of f(x) wrt g(x)
  16. 16The equation of line equally inclined with the positivie co-ordinate axes and passing through ( − 3 , 2 , − 5 ) is2017Line in Space
  17. 17If ∫ 0 π 2 log ⁡ cos ⁡ x d x = π 2 log ⁡ 1 2 , then ∫ 0 π 2 log ⁡ sec ⁡ x d x =2017Definite Integration by Substitution
  18. 18A boy tosses fair coin 3 times. If he gets ₹ 2 x for x heads then his expected gain equals to ₹........2017Classical Definition of Probability
  19. 19Which of the following statement pattern is a tautology?2017Mathematical Reasoning
  20. 20If the angle between the planes r → . ( m i ^ − j ^ + 2 k ^ ) + 3 = 0 and r → . ( 2 i ^ − m j ^ − i ^ ) − 5 = 0 is π 3 then m =2017Plane in Space
  21. 21If the origin and the points P ( 2 , 3 , 4 ) , Q ( 1 , 2 , 3 ) and R ( x , y , z ) are co-planar then2017Algebra of Vectors
  22. 22If lines represented by equation p x 2 - q y 2 = 0 are distinct then2017homogeneous equation of second degree
  23. 23Let P Q R S be a quadrilateral. If M and N are midpoints of the sides P Q and R S respectively then P S → + Q R → =2017Algebra of Vectors
  24. 24If slopes of lines represented by K x 2 + 5 x y + y 2 = 0 differ by 1 then K =2017Angle between lines
  25. 25If vector r → with direction cosine l , m , n is equally inclined to the co-ordinate axes, then the total number of such vectors is2017Algebra of Vectors
  26. 26If ∫ 1 x 2 + 4 x 2 + 9 d x = A tan - 1 ⁡ x 2 + B tan - 1 ⁡ x 3 + C then A - B =2017Integration by Substitution
  27. 27If α and β are roots of the equation x 2 + 5 x - 6 = 0 then the value of tan - 1 ⁡ α - tan - 1 ⁡ β is2017Relation between Roots and Coefficients
  28. 28If x = a t - 1 t , y = a t + 1 t where t be the parameter then d y d x = ?2017Parametric differentiation
  29. 29The point on the curve y = x - 1 where the tangent is perpendicular to the line 2 x + y - 5 = 0 is2017Tangent Normal
  30. 30If ∫ x - 5 x - 7 d x = A x 2 - 12 x + 35 + log ⁡ x - 6 + x 2 - 12 x + 35 + C then A =2017Integration by Substitution
  31. 31A random variable X ∽ B ( n , p ) . If values of mean and variance of X are 18 and 12 respectively then total number of possible values of X2017Random Variable and its Probability Distribution
  32. 32The area of the region bounded by the lines y = 2 x + 1 , y = 3 x + 1 and x = 4 is2017Area of Curve along axis
  33. 33A box contains 6 pens, 2 of which are defective. Two pens are taken randomly from the box. If random variable x : Number of defective pens o2017Random Variable and its Probability Distribution
  34. 34If the volume of spherical ball is increasing at the rate of 4 π c m 3 / sec then the rate of change of its surface area when the volume is 2017Rate Measure Error and Approximation
  35. 35If f x = log ⁡ sec 2 ⁡ x cot 2 ⁡ x f o r x ≠ 0 K f o r x = 0 is continuous at x = 0 then K is2017Continuity
  36. 36If c denotes the contradiction then dual of the compounds statement ∽ p ∧ ( q ∨ c ) is2017Mathematical Reasoning
  37. 37The differential equation of all parabolas whose axis is y - a x i s is2017Formation of Differential Equation
  38. 38∫ 0 3 x d x = _ _ _ _ _ _ , where [ x ] is greatest integer function2017Properties of Definite Integration
  39. 39The objective function of LPP defined over the convex set attains its optimum value at2017Maxima Minima
  40. 40If the inverse of the matrix α 14 - 1 2 3 1 6 2 3 does not exist then the value of α is2017Inverse of a Matrix
  41. 41If f x = x f o r ≤ 0 0 f o r 0 then f ( x ) at x = 0 is2017Continuity
  42. 42The equation of the plane through ( − 1 , 1 , 2 ) , whose normal makes equal acute angle with co-ordinate axes is2017Plane in Space
  43. 43The probability that a person will develop immunity after vaccination is 0.8. If 8 people are given the vaccine then probability that all de2017Total Probability
  44. 44If the distance of points 2 i ^ + 3 j ^ + λ k ^ from the plane r → ⋅ ( 3 i ^ + 2 j ^ + 6 k ^ ) = 13 is 5 units then λ =2017Plane in Space
  45. 45The value of cos - 1 ⁡ cot ⁡ π 2 + cos - 1 ⁡ sin ⁡ 2 π 3 is2017Principal Value and Basics
  46. 46The particular solution of the differential equation x d y + 2 y d x = 0 , when x = 2 , y = 1 is2017Exact Forms
  47. 47∆ A B C has vertices at A ≡ 2 , 3 , 5 , B ≡ ( - 1 , 3 , 2 ) and C ≡ λ , 5 , μ . If the median through A is equally inclined to the axes, the2017Basics of point in 3 dimension
  48. 48For the following distribution function F ( x ) of a random variable X x 1 2 3 4 5 6 F(x) 0.2 0.37 0.48 0.62 0.85 1 P 3 X ≤ 5 =2017Random Variable and its Probability Distribution
  49. 49The lines x - 1 2 = y + 1 2 = z - 1 4 and x - 3 1 = y - 6 2 = z 1 intersect each other at point2017Line in Space
  50. 50∫ sec 8 ⁡ x cosec ⁡ x d x =2017Integration by Substitution

Physics

  1. 1The frequency for a series limit of Balmer and Paschen series respectively are f 1 and f 3 . If the frequency of the first line of Balmer se2017Atomic Spectrum
  2. 2When three capacitors of equal capacities are connected in parallel and one of the same capacitor is connected in series with its combinatio2017Grouping of capacitors
  3. 3Sensitivity of moving coil galvanometer is s . If a shunt of 1 8 t h of the resistance of galvanometer is connected to moving coil galvanome2017Electric Instruments
  4. 4Two unknown resistances are connected in two gaps of a meter-bridge. The null point is obtained at 40 cm from left end. A 30 Ω resistance is2017Experimental Physics
  5. 5The distance between two coherent sources is 1 mm. The screen is placed at a distance of 1 m from the sources. If the distance of the third 2017Youngs Double Slit Experiment
  6. 6In series LCR circuit R = 18 Ω and impedance is 33 Ω . An RMS voltage of 220 V is applied across the circuit. The true power consumed in the2017AC Circuits
  7. 7Two parallel plate air capacitors of the same capacity C are connected in series to a battery of emf E . Then one of the capacitors is compl2017Capacitors with Dielectric
  8. 8The polarising angle for transparent medium is θ , v is the speed of light in that medium. Then the relation between θ and v is ( c = veloci2017Polarization of Light
  9. 9Two identical light waves having phase difference ϕ propagate in the same direction. When they superpose, the intensity of the resultant wav2017Interference and Superposition of Waves
  10. 10For a transistor, α d c and β d c are the current ratios, then the value of β d c - α d c α d c ⋅ β d c is2017Junction Transistors
  11. 11A radioactive element has a rate of disintegration 10,000 disintegrations per minute at a particular instant. After four minutes it becomes 2017Radioactivity
  12. 12When the same monochromatic ray of light travels through glass slab and through water, the number of waves in glass slab of thickness 6 cm i2017Refraction of light from plane surface
  13. 13An electron in a hydrogen atom jumps from second Bohr orbit to ground state and the energy difference of the two states is radiated in the f2017Photoelectric Effect
  14. 14The magnetic moment of electron due to orbital motion is proportional to ( n = principal quantum numbers)2017Atomic Structure
  15. 15Photodiode is a device2017Special purpose diodes
  16. 16A Wheel of moment of inertia 2 k g m 2 is rotating about an axis passing through centre and perpendicular to its plane at a speed 60 rad s -2017Angular momentum and Angular impulse
  17. 17If two waves of the same frequency and amplitude respectively on superposition produce a resultant disturbance of the same amplitude, the wa2017Interference and Superposition of Waves
  18. 18Two spherical black bodies have radii r 1 and r 2 . Their surface temperatures are T 1 and T 2 . If they radiate same power then r 2 r 1 is2017Radiation
  19. 19A simple wave motion is represented by y = 5 sin ⁡ 4 π t + 3 cos ⁡ 4 π t . Its amplitude is2017Simple Harmonic Motion
  20. 20An elevator of mass m is connected to a rope which pulls the elevator up with a maximum acceleration equal to a . If the maximum bearable te2017Newton's laws of motion
  21. 21A solid sphere of mass 2 kg is rolling on a frictionless horizontal surface with velocity 6 m s - 1 . It collides on the free end of an idea2017Rotational kinematics
  22. 22A flywheel at rest is to reach an angular velocity of 24 rad s - 1 in 8 s with constant angular acceleration. The total angle turned through2017Rotational kinematics
  23. 23Two uniform wires of the same material are vibrating under the same tension. If the first overtone of the first wire is equal to the second 2017Vibration of String
  24. 24When one end of the capillary is dipped in water, the height of the water column is h . The upward force of 105 dyne due to surface tension 2017Surface tension
  25. 25For a rigid diatomic molecule, the universal gas constant R = n C P , where, C P is the molar specific heat at constant pressure and n is a 2017Degree of Freedom and Specific Heat
  26. 26An ideal gas has pressure P , volume V and absolute temperature T . If m is the mass of each molecule and K is the Boltzmann constant then d2017Thermodynamic Systems
  27. 27A big water drop is formed by the combination of n small water drops of equal radii. The ratio of the surface energy of n drops to the surfa2017Surface tension
  28. 28The ratio of the binding energy of a satellite at rest on earth's surface to the binding energy of a satellite of same mass revolving around2017Gravitational potential and Potential Energy
  29. 29A particle performing S.H.M. starts from the equilibrium position and its time period is 16 seconds. After 2 seconds its velocity is π m s -2017Simple Harmonic Motion
  30. 30In sonometer experiment, the string of length L under tension vibrates in second overtone between two bridges. The amplitude of vibration is2017Organ Pipe (Vibration of Air Column)
  31. 31The depth d at which the value of acceleration due to gravity becomes 1 n times the value at the earth's surface is ( R = radius of the eart2017Acceleration Due to Gravity
  32. 32A particle is performing SHM starting from extreme position. Graphical representation shows that, between displacement and acceleration, the2017Simple Harmonic Motion
  33. 33The fundamental frequency of an air column in a pipe closed at one end is 100 Hz . If the same pipe is open at both the ends, the frequencie2017Organ Pipe (Vibration of Air Column)
  34. 34For a particle moving in vertical circle, the total energy at different positions along the path.2017Uniform Circular Motion
  35. 35A simple pendulum of length L has mass M and it oscillates freely with amplitude A . At the extreme position, its potential energy is ( g = 2017Simple Harmonic Motion
  36. 36On a photosensitive material, when the frequency of incident radiation is increased by 30 % , the kinetic energy of emitted photoelectrons i2017Photoelectric Effect
  37. 37Out of the following graphs, which graph shows the correct relation (graphical representation) for LC Parallel resonant circuit?2017Parallel AC Circuits
  38. 38According to de-Broglie hypothesis, the wavelength associated with moving electron of mass m is λ e . Using mass energy relation and Planck'2017Matter Waves
  39. 39A parallel plate air capacitor has capacity 'C' farad, potential 'V' volt and energy 'E' joule. When the gap between the plates is completel2017Capacitance
  40. 40The resistivity of potentiometer wire is 40 × 10 - 8 Ω m and its area of cross-section is 8 × 10 - 6 m 2 . If 0 . 2 A current is flowing thr2017Electric Instruments
  41. 41A ceiling fan rotates about its own axis with some angular velocity. When the fan is switched off, the angular velocity becomes 1 4 t h of t2017Rotational kinematics
  42. 42A disc of the moment of inertia I 1 is rotating in a horizontal plane about an axis passing through a centre and perpendicular to its plane 2017Angular momentum and Angular impulse
  43. 43A particle performs linear SHM. At a particular instant, the velocity of the particle is u and acceleration is α (both having the same direc2017Simple Harmonic Motion
  44. 44The observer is moving with velocity v 0 towards the stationary source of sound and then after crossing moves away from the source with velo2017Doppler’s Effect
  45. 45A metal rod of length L and cross-sectional area A is heated through T ° C . What is the force required to prevent the expansion of the rod 2017Young’s Modulus and Breaking Stres
  46. 46A straight conductor of length 0 . 4 m is moving with a speed of 7 ms - 1 perpendicular to the magnetic field of intensity of 0 . 9 Wb m - 22017Magnetic Flux, Faraday's and Lenz law
  47. 47In Young's double-slit experiment, in an interference pattern, the second minimum is observed exactly in front of one slit. The distance bet2017Youngs Double Slit Experiment
  48. 48In communication system the process of superimposing a low frequency signal on a high frequency wave is known as2017Communication System
  49. 49A magnetic dipole is placed in a uniform magnetic field of intensity B , oriented along the direction of the field. If the magnetic dipole m2017Magnetic Dipole
  50. 50The magnetic flux near the axis and inside the air-core solenoid of length 60 cm carrying current I is 1.57 × 10 6 Wb . Its magnetic moment 2017Magnetic Field

Frequently Asked Questions

1.How many questions are in the MHT CET 2017 paper?

This paper has 150 questions in total - 50 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 MHT CET 2017 paper?

The MHT CET 2017 paper on MARKS has 150 questions, organised by subject:

  • Chemistry: 50 questions - 50 single-correct.
  • Mathematics: 50 questions - 50 single-correct.
  • Physics: 50 questions - 50 single-correct.
4.What is the difficulty level of the MHT CET 2017 paper?

Each question on MARKS carries a difficulty rating. Of the 150 rated questions in this paper, 67 (45%) are easy, 71 (47%) are medium and 12 (8%) are hard. Subject wise:

  • Chemistry: 25 easy, 21 medium, 4 hard
  • Mathematics: 25 easy, 20 medium, 5 hard
  • Physics: 17 easy, 30 medium, 3 hard
5.Which chapters had the most questions in the MHT CET 2017 paper?

The chapters with the most questions in each subject were:

  • Chemistry: Thermodynamics (C) (4), Alcohols Phenols and Ethers (3), and Aldehydes and Ketones (3).
  • Mathematics: Three Dimensional Geometry (7), Probability (5), and Application of Derivatives (4).
  • Physics: Waves and Sound (6), Oscillations (5), and Rotational Motion (5).
6.Where can I find the solutions for the MHT CET 2017 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 MHT CET 2017 paper to check my preparation?

Set a timer, attempt the 150 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 MHTCET. Repeating this with other papers shows whether the same weak spots keep coming back.

8.Will the MHT CET 2017 paper help me prepare for MHTCET 2027?

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