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AIIMS 2001

Browse the complete Botany, Chemistry, Physics, and Zoology question set from the AIIMS 2001 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 - 69 easy (38%), 81 moderate (45%) and 30 tough (17%). That's a fairly typical mix for this exam. By subject: Physics 35% easy, 38% moderate, 27% tough; Chemistry 48% easy, 37% moderate, 15% tough; Zoology 38% easy, 54% moderate, 8% tough; Botany 28% easy, 64% moderate, 8% tough.

Botany questions were spread across 12 chapters, with Animal Kingdom (5), Photosynthesis in Higher Plants (5), and Transport in Plants (5) carrying the most weight. Chemistry questions were spread across 22 chapters, with Chemical Bonding and Molecular Structure (11), Ionic Equilibrium (7), and General Organic Chemistry (5) carrying the most weight. Physics questions were spread across 22 chapters, with Thermal Properties of Matter (8), Gravitation (5), and Units and Dimensions (5) carrying the most weight. Zoology questions were spread across 14 chapters, with Molecular Basis of Inheritance (3), Principles of Inheritance and Variation (3), and Breathing and Exchange of Gases (2) carrying the most weight.

Botany

  1. 1During the cell cycle, DNA content is doubled in the2001Interphase
  2. 2Barr body is found in the cytoplasm during2001Interphase
  3. 3Wooden doors swell up and get stuck during the rainy season. This is due to the phenomenon of2001Imbibition
  4. 4A human RBC is placed in salt solution. It will2001Plasmolysis
  5. 5In plants, water moves from2001Means of Transport
  6. 6Stomata opens2001Transpiration
  7. 7Assertion : A plant girdled upto bast will die. Reason : Food transportation in such plant will cease followed by ceasation of water transpo2001Plant Water Relations
  8. 8Which of these are most widely used in genetic engineering?2001Cell Organelles
  9. 9Some Gram -ve bacteria have peptidoglycan and an extra layer of2001Cell Wall
  10. 10Assertion : Plasma membrane is exceedingly thin and not visible as a separate layer. Reason : It appears merely as a surface layer of cytopl2001Cell Membranes
  11. 11Which floral family has (9) +1 arrangement of anthers in the androecium ?2001Families
  12. 12Clove is a2001The Flower
  13. 13Coconut's husk fibre, coir of commerce is extracted from2001The Fruit
  14. 14During formation of which of the following free nuclear division occurs?2001The Seed
  15. 15Porous wood has abundance of2001Permanent Tissues
  16. 16Velamen is a specialized tissue found in2001Anatomy of Plant Parts
  17. 17Assertion : Monocot stem bears collateral open vascular bundles. Reason : If cambium is absent such vascular bundles are called closed type.2001Anatomy of Plant Parts
  18. 18Which of the following is an egg laying mammal ?2001Phylum Chordata
  19. 19Class Crustacea has following features :2001Phylum Echinodermata
  20. 20Which of the following is wrongly matched?2001Phylum Arthropoda
  21. 21Which of the following is correct about nematocyst?2001Coelenterata or Cnideria
  22. 22Assertion : Salamander, Sphenodon are classified as amphibians. Reason : Sphenodon is regarded as living fossil.2001Phylum Chordata
  23. 23Which of the following pesticides is an acetylcho linesterase inhibitor?2001Plant Growth Regulators
  24. 24Induction of flowering by low temperature in plants is2001Vernalisation
  25. 25Which of the following statements is correct regarding short day plants (SDPs)?2001Photoperiodism
  26. 26The sphere of living matter together with water, air and soil on the surface of earth is called2001Patterns of Biodiversity
  27. 27Assertion : Among the land animals, the Cheetah can run fastest over the ground. Reason : The Cheetah uses its powerful forelimbs to push it2001Biodiversity Conservation in India
  28. 28Photorespiration, usually occurs in2001Cellular Respiration
  29. 29In respiration from of glucose which of the following is formed?2001Glycolysis
  30. 30Hydroponics is2001Hydroponics
  31. 31The protists have2001Kingdom Protista
  32. 32Which of the following statements about phytochrome is true?2001Pigments
  33. 33Blackman's law is related to2001Factor Affecting Photosynthesis
  34. 34Who discovered photophosphorylation?2001Mechanism of Photosynthesis
  35. 35Photosynthetic bacteria do not contain2001Two Pigment System
  36. 36Assertion : Stomata remain open during day. Reason : Stomata help in exchange of gases.2001The Site of Photosynthesis

Chemistry

  1. 1Which of the following is aromatic?2001Conjugation and Aromaticity
  2. 2Which of the following is most stable carbocation?2001Electron displacement effects
  3. 3Which of the following order of basic strength is correct?2001Electron displacement effects
  4. 4The IUPAC name of the compound having the formula is2001IUPAC Nomenclature
  5. 5Which of the following alkanes is optically active?2001Isomerism of Organic Compounds
  6. 6Hybridisation in and are respectively2001Hybridisation and VSEPR Theory
  7. 7In which of the following bonding is possible?2001Hybridisation and VSEPR Theory
  8. 8Which of the following has highest second ionization energy?2001Ionic bond
  9. 9Smallest intermolecular distance is found in2001Molecular Orbital Theory
  10. 10Which of the following option w.r.t. increasing bond order is correct ?2001Molecular Orbital Theory
  11. 11The is a planar molecule where as is pyramidal, because2001Hybridisation and VSEPR Theory
  12. 12Assertion : -Nitrophenol is more volatile than -nitrophenol. Reason : Intramolecular hydrogen bonding is present in -nitrophenol while inter2001Van Der Waals Forces, Hydrogen Bonding and Metallic Bonding
  13. 13Assertion : and has comparable molecular weight but boiling point of is more than dimethyl ether. Reason : forms intermolecular Hbonding whi2001Van Der Waals Forces, Hydrogen Bonding and Metallic Bonding
  14. 14Assertion : and are miscible. Reason : One of them is polar.2001Van Der Waals Forces, Hydrogen Bonding and Metallic Bonding
  15. 15Assertion : are said to have similar structure. Reason : They have same number of and bonds .2001Covalent and Co-ordinate Bonding
  16. 16Assertion : is soluble in water while is not. Reason : Lattice energy of exceeds its hydration energy.2001Ionic bond
  17. 17In the following reaction order, is2001Reactions Involving Acid Group
  18. 18Strongest acid among the following is2001Preparation and Properties of Carboxylic Acids
  19. 19Which of the following arrangements is possible?2001Quantum mechanical model
  20. 20The electronic configuration shows2001Electronic configuration
  21. 21Assertion : Ionisation potential of B (atomic no.5) is less than Be (atomic no. 4). Reason : The first electron released from Be is of -orbi2001Atomic Mass and Atomic Size
  22. 22Which of the following is strongest Bronsted base?2001Theories of Acids and Bases
  23. 23When the temperature of reactions will increase then the effect on value will2001PH of solutions
  24. 24The of aqueous solution of ammonium formate is of and of2001PH of solutions
  25. 25The value of decinormal solution of which is ionised is2001PH of solutions
  26. 26The aqueous solution of which of the following salt will have the lowest ?2001PH of solutions
  27. 27A solution with is more acidic than one with a , by a factor of2001PH of solutions
  28. 28Assertion : Relative strength of acids can be known by knowing the value of dissociation constant. Reason : It gives the value of dissolved 2001Ionic Product of Water
  29. 29Which of the following has highest hydration energy?2001Alkaline Earth Metals
  30. 30Which of the following is soluble in water?2001Alkaline Earth Metals
  31. 31Which azide is explosive?2001Alkaline Earth Metals
  32. 32The composition of carnalite is2001Compounds of Alkaline Earth Metals
  33. 33Which of the following is always feasible?2001Third law of thermodynamics
  34. 34Given that . The heat of formation of is2001Laws of Thermochemistry and Enthalpy Change
  35. 35Which of the following hydrogen halides is most basic?2001Halogens and Its Compounds
  36. 36Which one forms type compound?2001Halogens and Its Compounds
  37. 37Hardest compound of boron is2001Boron and Its Compounds
  38. 38Which of the following is stable (inert) to fire?2001Carbon and Its Compounds
  39. 39hybridisation is found in2001Crystal Field Theory
  40. 40Which of the following molecule or ions is a bidentate ligand?2001Terminology of coordination compounds
  41. 41Which of the following compound is not coloured?2001Crystal Field Theory
  42. 42A packet of colloidal system is taken in which colloidal particles are still. Two electrodes are taken in system and voltage is applied so t2001Preparation and Purification of colloids
  43. 43Correct equation of Freundrich isotherm is2001Adsorption isotherms
  44. 44Rate determining step in nitration of benzene is2001Reactions of aromatic compounds
  45. 45A spoon to be electroplated with gold should be2001Cells and Electrode Potential, Nernst Equation
  46. 46How many electrons are delivered at the cathode during electrolysis by a current of in 60 seconds?2001Cells and Electrode Potential, Nernst Equation
  47. 47The number of moles of electrons required to deposit equivalent aluminium (atomic wt. ) from a solution of aluminium chloride will be2001Cells and Electrode Potential, Nernst Equation
  48. 48The equilibrium constant of a reaction is 300 . If the volume of a reaction flask is trippled, the equilibrium constant will be2001Cells and Electrode Potential, Nernst Equation
  49. 49A solid has type structure. The radius of is . What is the radius of ?2001Ionic structure
  50. 50Crystalline solids have2001Properties and Types of Solids
  51. 51In which of the following reaction ?2001Law of Mass Action, Equilibrium Constant (Kc and Kp) and its Application
  52. 52Which of the following is a characteristic of a reversible reaction?2001Law of Mass Action, Equilibrium Constant (Kc and Kp) and its Application
  53. 53How many litres of ammonia gas at S.T.P. would be needed to prepare of ammonium hydroxide solution?2001Quantitative measures in chemical equations
  54. 54If of a chlorine containing organic compound gave of silver chloride, then the percentage of chlorine in the organic compound is2001Quantitative measures in chemical equations
  55. 55Which of the following is the correct sequence of atomic weights of the given elements?2001Properties of D-block elements
  56. 56Vapour pressure of benzene at is . When of a non-volatile solute is dissolved in of benzene, its vapour pressure is decreased to . The molec2001Vapour pressure and raoult's law
  57. 57Which of the following statements is not true about alcohols?2001Preparation and Properties of Alcohols
  58. 58Assertion : In some cases oxygen shows positive oxidation number though it is an electronegative element. Reason : Fluorine is more electron2001Oxidation number
  59. 59Assertion : Hydrogen nuclei combines to form helium nuclei then energy is released. Reason : Binding energy/nucleon of He is greater than hy2001Integrated rate laws
  60. 60Assertion : Water is used as a moderator in nuclear reactor. Reason : Moderator is a light substance that absorb neutrons.2001Preparation and Properties of Water

Physics

  1. 1Two coherent monochromatic light beams of amplitude 3 and 5 units are superposed. The maximum and minimum possible intensities in the result2001Interference of Light
  2. 2If red light is replaced by white light then width of diffraction pattern will2001Diffraction of Light
  3. 3Assertion : Skiers uses air glasses. Reason : Light reflected by snow is partially polarised.2001Polarization of Light
  4. 4Assertion : LASER is used to measure distant object as moon. Reason : They are highly coherent source of light.2001Interference of Light
  5. 5Two masses are attached to a rod end to end. If torque is applied they rotate with angular acceleration . If their distances are doubled and2001Rotational kinematics
  6. 6If the earth is treated as a sphere of radius and mass , its angular momentum about the axis of its rotation with period , is2001Angular momentum and Angular impulse
  7. 7A particle is revolving in a circle of radius . If the force acting on it is inversely proportional to , then the time period is proportiona2001Uniform Circular Motion
  8. 8Assertion : Centripetal force does no work. Reason : Force and displacement are perpendicular to each other.2001Uniform Circular Motion
  9. 9Assertion : Work done in uniform circular motion is zero. Reason : Force is always directed along displacement.2001Uniform Circular Motion
  10. 10At a place earth's magnetic field, is acting perpendicular to a coil of radius . If , then how much current is induced in circular loop?2001Induced Electric Field
  11. 11If electron is moving from to in wire , then current induced in the coil is2001Magnetic Flux, Faraday's and Lenz law
  12. 12A small piece of metal wire is dragged across the gap between the pole pieces of a magnet in . If magnetic flux between the pole pieces is k2001Induced Electric Field
  13. 13An engine is working. It takes 100 calories of heat from source and leaves 80 calories of heat to sink. If the temperature of source is , th2001Heat Engine, Refrigerator and Second Law of Thermodynamics
  14. 14Which of the following is path dependent?2001First Law of Thermodynamics
  15. 15Speed in kilometer per hour in S.I. unit is represented as2001Units
  16. 16Dimension of resistivity is2001Dimensions
  17. 17Which of the following physical quantities do not have same dimensions?2001Dimensions
  18. 18S.I. unit of velocity is2001Units
  19. 19What is the dimensional formula for the gravitational constant ?2001Dimensions
  20. 20Colour of a star depends upon2001Radiation
  21. 21A solid sphere and a hollow sphere are heated the same temperature. Point out the true statement.2001Radiation
  22. 22of heat flowing through a rod of iron. When the rod is cut down to 4 pieces then what will be the heat flowing through each piece having sam2001Conduction
  23. 23Temperature of the star is determined by2001Radiation
  24. 24If hot water is mixed with cold water2001Thermometry
  25. 25Antimony and Bismuth are usually used in thermocouple, because2001Conduction
  26. 26A constant pressure air thermometer gave a reading of 47.5 units of volume when immersed in ice-cold water, and 67 units in a boiling liquid2001Thermometry
  27. 27For an enclosure maintained at , the maximum radiation occurs at wavelength . If the temperature is raised to , the peak will shift to2001Radiation
  28. 28If mass of an atom is moving with speed , what will be its speed after the emission of an -particle if speed of -particle is zero ?2001Nuclear reactions
  29. 29A certain radioactive element has a half-life of 20 years. If we have a block with of the element in it, after how many years will there be 2001Radioactivity
  30. 30A wire of length carries a steady current. It is bent first to form a circular plane loop of one turn. The magnetic field at the centre of t2001Magnetic Field
  31. 31A metal rod consumes power on passing current. If it is cut into two half and joined in parallel, it will consume power2001Electric Power and Heating Effect of Current
  32. 32The equivalent resistance between and of the given circuit, is2001Wheatstone Bridge
  33. 33Assertion: Electric appliances with metallic body e.g., heaters, presses etc., have three pin connections, whereas an electric bulb has a tw2001Electric Power and Heating Effect of Current
  34. 34A body of mass moving with velocity explodes into two equal parts. If one comes to rest and the other body moves with velocity , what would 2001momentum
  35. 35Maximum energy transfer for an elastic collision will occur if one body is at rest when2001Collisions
  36. 36Two particles are seen to collide and move jointly together after the collision. During such a collision, for the total system,2001Collisions
  37. 37The orbital velocity of an artificial satellite in a circular orbit above the earth's surface at a distance equal to radius of earth is . Fo2001Motion of satellite
  38. 38Escape velocity of a rocket is . It is released at an angle of . Its escape velocity is2001Gravitational potential and Potential Energy
  39. 39A body weighed on the surface assuming the earth to be a sphere of uniform mass density, how much would it weigh half way down to the centre2001Acceleration Due to Gravity
  40. 40Assertion : At pole value of acceleration due to gravity is greater than that of equator. Reason : Earth rotates on its axis in addition to 2001Acceleration Due to Gravity
  41. 41Assertion : The time period of revolution of a satellite around a planet is directly proportional to the radius of the orbit of the satellit2001Motion of satellite
  42. 42The time period of a simple pendulum is remaining at rest inside a lift. Find the time period of pendulum when lift starts to move up with a2001Time Period and Frequency
  43. 43From the given figure find the frequency of2001Applications of SHM
  44. 44Assertion : Soldiers are asked to break steps while crossing the bridge. Reason : The frequency of thick marching may be equal to the natura2001Superposition of S.H.M’s and Resonance
  45. 45From the figure find the capacitance of the capacitor?2001Capacitors with Dielectric
  46. 46Mass of the proton is 1840 times that of electron. It is accelerated through a potential difference of . Find its kinetic energy.2001Davison and Germer Experiment
  47. 47The work function of a metal is . If the frequency of incident radiation is increased to twice, then the work function of the metal becomes2001Photoelectric Effect
  48. 48In Planck's oscillator energy is given as If , then energy would be2001Photoelectric Effect
  49. 49Assertion : On increasing the frequency of light larger number of photoelectrons are emitted. Reason : The number of electrons emitted depen2001Photoelectric Effect
  50. 50Two spheres of same metal have radii and . They have been connected to a conducting wire. Find the ratio of the electric field intensity upo2001Electric Field and Electric Field Lines
  51. 51If a unit positive charge is taken from one point to another over an equipotential surface, then2001Electric Potential and Potential Energy
  52. 52Figure shows the e 1 e c tr ic lines of f o rce s emerging from a charged body. If the electric field at and are and respectively and if the2001Electric Field and Electric Field Lines
  53. 53A charge is placed at the centre of cube of side then flux linked with one of its given faces will be2001Electric Flux and Gauss Law
  54. 54If fundamental frequency is 50 and next successive frequencies are 150 and 250 then it is2001Organ Pipe (Vibration of Air Column)
  55. 55A source of frequency is moving towards an observer with a velocity of . The observer is now moving towards the source with a velocity of . 2001Doppler’s Effect
  56. 56If in a circuit current lags behind EMF by . Then it is a/an2001AC Circuits
  57. 57For liquid to rise in a capillary tube, the angle of contact should be2001Surface tension
  58. 58X-ray beams are affected by2001X-Rays
  59. 59The heat produced in a long wire is characterised by resistance, current and time through which the current passes. If the errors in measuri2001Errors of Measurement
  60. 60Assertion : During reverse biasing a diode doesn't conduct current. Reason : It narrows the depletion layer.2001Diodes

Zoology

  1. 1If a stimulus, several times greater than the threshold stimulus is provided to a muscle fibre, it will2001Movement
  2. 2Assertion : Rheumatoid arthritis is an inflammation of the synovial membrane in synovial joints. Reason : Infectious arthritis mostly occurs2001Locomotion
  3. 3The respiratory centre in the brain is stimulated by2001Human Respiratory System
  4. 4All veins carry deoxygenated blood except2001Human Respiratory System
  5. 5Cocaine is a stimulant, which may cause addiction. It is an alkaloid obtained from2001Drug Abuse
  6. 6Some students, during a study, caught, marked and released 80 fishes in a pond. Later 100 fishes were caught at random. Among these 40 were 2001Populations
  7. 7Mutualism is found in2001Populations
  8. 8Which of these are considered most essential in the origin of life?2001Origin of Universe and Life
  9. 9Genetic drift operates only in2001Mutation Theory of Hugo De Vries
  10. 10The ratio in a dihybrid test cross between two individuals is given by2001Test Cross
  11. 11Extranuclear genes occurs in2001Chromosome Theory of Inheritance
  12. 12Assertion : Phenylketonuria is a disease in which excretion of phenylalanine occurs in urine. Reason : It is due to dietary imbalance.2001Genetic Disorders
  13. 13A frog has its brain crushed. But when pinched on the leg, The leg draws away. It is an example of2001Parts of Nervous System
  14. 14Identify the correct statement.2001Parts of Nervous System
  15. 15In RNA thymine is replaced by2001Properties of Genetic Material
  16. 16In prokaryotes, genetic recombination can occur during2001The Search for Genetic Material
  17. 17Assertion : Watson and Crick provided experimental proof of semiconservative nature of DNA relication. Reason : DNA polymerase binds nucleot2001Structure of DNA
  18. 18Tadpoles can be made to grow in size and become adult by2001Frog
  19. 19Sella Turcica is found2001Pituitary Gland
  20. 20Chloromycetin is obtained from2001Products
  21. 21Which of the following is non-pathogenic bacteria of colon?2001Histology of Alimentary Canal
  22. 22Assertion : Wounds heal slowly due to vitamin C deficiency. Reason : Vitamin is essential for collagen formation.2001Vitamin
  23. 23An oocyte is released from the ovary under the influence of2001Female Reproductive System
  24. 24Which is Indian dwarf wheat?2001Genetic Modified Crops

Frequently Asked Questions

1.How many questions are in the AIIMS 2001 paper?

This paper has 180 questions in total - 36 from Botany, 60 from Chemistry, 60 from Physics, and 24 from Zoology.

2.Can I practise questions from just one subject?

Yes. Use the Botany, Chemistry, Physics, and Zoology 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 AIIMS 2001 paper?

The AIIMS 2001 paper on MARKS has 180 questions, organised by subject:

  • Botany: 36 questions - 36 single-correct.
  • Chemistry: 60 questions - 60 single-correct.
  • Physics: 60 questions - 60 single-correct.
  • Zoology: 24 questions - 24 single-correct.
4.What is the difficulty level of the AIIMS 2001 paper?

Each question on MARKS carries a difficulty rating. Of the 180 rated questions in this paper, 69 (38%) are easy, 81 (45%) are medium and 30 (17%) are hard. Subject wise:

  • Botany: 10 easy, 23 medium, 3 hard
  • Chemistry: 29 easy, 22 medium, 9 hard
  • Physics: 21 easy, 23 medium, 16 hard
  • Zoology: 9 easy, 13 medium, 2 hard
5.Which chapters had the most questions in the AIIMS 2001 paper?

The chapters with the most questions in each subject were:

  • Botany: Animal Kingdom (5), Photosynthesis in Higher Plants (5), and Transport in Plants (5).
  • Chemistry: Chemical Bonding and Molecular Structure (11), Ionic Equilibrium (7), and General Organic Chemistry (5).
  • Physics: Thermal Properties of Matter (8), Gravitation (5), and Units and Dimensions (5).
  • Zoology: Molecular Basis of Inheritance (3), Principles of Inheritance and Variation (3), and Breathing and Exchange of Gases (2).
6.Are there any out-of-syllabus questions in the AIIMS 2001 paper?

Yes. 33 of the 180 questions in this paper are marked on MARKS as outside the current syllabus. You can still practise them for the concept, but they are a lower priority if you are short on time.

7.Where can I find the solutions for the AIIMS 2001 paper?

Open any question on this page. Its page shows the correct answer and, where one is available, the worked solution. A downloadable PDF of the whole paper is coming soon.

8.How should I use the AIIMS 2001 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 AIIMS. Repeating this with other papers shows whether the same weak spots keep coming back.