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NEET 2012 Mains

Browse the complete Botany, Chemistry, Physics, and Zoology question set from the NEET 2012 Mains 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 120 questions in total - 46 easy (38%), 55 moderate (46%) and 19 tough (16%). That's a fairly typical mix for this exam. By subject: Chemistry 43% easy, 33% moderate, 23% tough; Zoology 27% easy, 67% moderate, 7% tough; Botany 33% easy, 53% moderate, 13% tough; Physics 50% easy, 30% moderate, 20% tough.

Botany questions were spread across 14 chapters, with Anatomy of Flowering Plants (3), Biological Classification (3), and Ecosystem (3) carrying the most weight. Chemistry questions were spread across 16 chapters, with Electrochemistry (4), Aldehydes and Ketones (3), and Chemical Bonding and Molecular Structure (3) carrying the most weight. Physics questions were spread across 23 chapters, with Current Electricity (2), Dual Nature of Matter (2), and Gravitation (2) carrying the most weight. Zoology questions were spread across 13 chapters, with Biotechnology - Principles and Processes (4), Principles of Inheritance and Variation (4), and Excretory Products and their Elimination (3) carrying the most weight.

Botany

  1. 1Which one of the following organisms is scientifically correctly named, correctly printed according to the International Rules of Nomenclatu2012 (Mains)Taxonomy
  2. 2How many organisms in the list given below are autotrophs? Lactobacillus, Nostoc, Chara, Nitrosomonas, Nitrobacter, Streptomyces, Saccharomy2012 (Mains)Kingdom Monera
  3. 3In the five-kingdom classification, Chlamydomonas and Chlorella have been incluced in2012 (Mains)Introduction
  4. 4Consider the following four statements (a-d) and select the option which includes all the correct ones only. (a) Single cell Spirulina can p2012 (Mains)Kingdom Fungi
  5. 5Read the following five statements and answer as asked next to them I. In Equisetum the female gametophyte is retained on the parent sporoph2012 (Mains)Bryophytes
  6. 6Which one of the following pairs is wrongly matched?2012 (Mains)Gymnosperms
  7. 7Which one of the following pairs of animals are similar to each other pertaining to the feature stated against them?2012 (Mains)Basis of Classification
  8. 8Which one of the following categories of animals, is correctly described with no single exception in it?2012 (Mains)Subphylum Cephalochordata
  9. 9Which one of the following organisms is correctly matched with its three characteristics?2012 (Mains)The Leaf
  10. 10How many plants in the list given below have marginal placentation? Mustard, Gram, Tulip, Asparagus, Arhar, Sunnhemp, Chilli, Colchicine, On2012 (Mains)The Flower
  11. 11Read the following four statements. I. Both, photophosphorylation and oxidative phosphorylation involve up hill transport of protons across 2012 (Mains)Permanent Tissues
  12. 12As compared to a dicot root, a monocot root has2012 (Mains)Permanent Tissues
  13. 13Cuscuta is an example of2012 (Mains)Permanent Tissues
  14. 14Identify the meiotic stage in which the homologous chromosomes separate while the sister chromatids remain associated at their centromeres2012 (Mains)Meiosis
  15. 15Which one of the following biomolecules is correctly characterised?2012 (Mains)Lipids
  16. 16Which one of the following structures is an organelle within an organelle?2012 (Mains)Cell Organelles
  17. 17Which one of the following cellular parts is correctly described?2012 (Mains)Cell Organelles
  18. 18Through their effect on plant growth regulators, what do the temperature and light control in the plants?2012 (Mains)Plant Growth Regulators
  19. 19Which one of the following generally acts as an antagonist to gibberellins?2012 (Mains)Plant Growth Regulators
  20. 20Vernalization stimulates flowering in2012 (Mains)Vernalisation
  21. 21For its activity, carboxypeptidase requires2012 (Mains)Role of Micro and Macronutrients
  22. 22For its action, nitrogenase requires2012 (Mains)Nitrogen Metabolism
  23. 23What is the function of germ pore?2012 (Mains)Sexual Reproduction
  24. 24Which one of the following statements is wrong?2012 (Mains)Sexual Reproduction
  25. 25Plants with ovaries having only one or a few ovules, are generally pollinated by2012 (Mains)Sexual Reproduction
  26. 26Sacred grooves are specially useful in2012 (Mains)Conservation of Biodiversity
  27. 27Select the correct statement about biodiversity2012 (Mains)Levels of Biodiversity
  28. 28The rate of formation of new organic matter by rabbit in a grassland, is called2012 (Mains)Functions of Ecosystem
  29. 29The second stage of hydrosere is occupied by plants like2012 (Mains)Ecological Succession
  30. 30Identify the likely organisms (I, II) (III) and (IV) in the food web shown below2012 (Mains)Functions of Ecosystem

Chemistry

  1. 1The orbital angular momentum of a p-electron is given as2012 (Mains)Quantum mechanical model
  2. 2During change of to ion, the electron adds on which one of the following orbitals?2012 (Mains)Molecular Orbital Theory
  3. 3In the replacement reaction The reaction will be most favourable if happens to be2012 (Mains)Ionic bond
  4. 4Four diatomic species are listed below. Identify the correct order in which the bond order is increasing in them.2012 (Mains)Molecular Orbital Theory
  5. 5A certain gas takes three times as long to effuse out as helium. Its molecular mass will be2012 (Mains)Mixture of gases
  6. 6For real gases van der Waals' equation is written as where, and are van der Waals' constants. Two sets of gases are I. and II. and The gases2012 (Mains)Real Gases and Van der Waal's Equation
  7. 7Equal volumes of two monoatomic gases, and , at same temperature and pressure are mixed. The ratio of specific heats of the mixture will be2012 (Mains)Mixture of gases
  8. 8Given that the equilibrium constant for the reaction, has a value of 278 at a particular temperature. What is the value of the equilibrium c2012 (Mains)Law of Mass Action, Equilibrium Constant (Kc and Kp) and its Application
  9. 9Given the reaction between two gases represented by and to give the compound . At equilibrium, the concentration of of of If the reaction ta2012 (Mains)Law of Mass Action, Equilibrium Constant (Kc and Kp) and its Application
  10. 10In which of the following arrangements the given sequence is not strictly according to the property indicated against it?2012 (Mains)Hydrides
  11. 11Which of the following reagents will be able to distinguish between 1-butyne and 2-butyne?2012 (Mains)Properties and Preparation of Alkynes
  12. 12Structure of a mixed oxide is cubic close packed (ccp). The cubic unit cell of mixed oxide is composed of oxide ions. One fourth of the tetr2012 (Mains)Cubic system
  13. 13Vapour pressure of chloroform and dichloromethane at are and respectively. Vapour pressure of the solution obtained by mixing of and of at t2012 (Mains)Vapour pressure and raoult's law
  14. 14Which of the following compounds can be used as antifreeze in automobile radiators?2012 (Mains)Henry's law
  15. 15Standard reduction potentials of the half reactions are given below The strongest oxidising and reducing agents respectively are2012 (Mains)Cells and Electrode Potential, Nernst Equation
  16. 16Molar conductivities at infinite dilution of and are 126.4, 425.9 and respectively. for will be2012 (Mains)Conductance and Conductivity
  17. 17Four successive members of the first series of the transition metals are listed below. For which one of them the standard potential value ha2012 (Mains)Cells and Electrode Potential, Nernst Equation
  18. 18The Gibbs' energy for the decomposition of at is as follows The potential difference needed for the electrolytic reduction of aluminium oxid2012 (Mains)Cells and Electrode Potential, Nernst Equation
  19. 19Activation energy and rate constants and of a chemical reaction at two different temperatures and are related by2012 (Mains)Arrhenius theory
  20. 20Which one of the following does not correctly represent the correct order of the property indicated against it?2012 (Mains)Properties of D-block elements
  21. 21The catalytic activity of transition metals and their compounds is ascribed mainly to2012 (Mains)Compounds of Transition Metals
  22. 22Which of the following exhibits only +3 oxidation state?2012 (Mains)F-Block elements
  23. 23Red precipitate is obtained when ethanol solution of dimethylglyoxime is added to ammoniacal . Which of the following statements is not true2012 (Mains)Crystal Field Theory
  24. 24Low spin complex of -cation in an octahedral field will have the following energy crystal field splitting energy in an octahedral field, ele2012 (Mains)Crystal Field Theory
  25. 25Consider the following reaction The product ' ' is2012 (Mains)Method of preparation for Aldehydes
  26. 26Consider the reaction, What sort of reaction is it?2012 (Mains)Chemical reactions for aldehydes and ketones
  27. 27Which of the following compounds will give a yellow precipitate with iodine and alkali?2012 (Mains)Tests for Aldehyde and Ketones
  28. 28An organic compound , when treated with nitrous acid, gave an alcohol and gas was evolved. on warming with and caustic potash gave (C) which2012 (Mains)Preparation and Properties of Isocyanides
  29. 29Which one of the following sets forms the biodegradable polymer?2012 (Mains)Classification of Polymers
  30. 30Chloramphenicol is an2012 (Mains)Drugs and It's Classification

Physics

  1. 1The dimensions of are2012 (Mains)Dimensions
  2. 2A stone is dropped from a height . It hits the ground with a certain momentum . If the same stone is dropped from a height more than the pre2012 (Mains)Motion Under Gravity
  3. 3A car of mass is moving on a level circular track of radius . If represents the static friction between the road and tyres of the car, the m2012 (Mains)Non-uniform Circular Motion
  4. 4A car of mass starts from rest and accelerates so that the instantaneous power delivered to the car has a constant magnitude . The instantan2012 (Mains)Power
  5. 5Three masses are placed on the -axis : at origin, at and at . The distance of the centre of mass from the origin is2012 (Mains)Centre of mass of discrete particles
  6. 6A circular platform is mounted on a frictionless vertical axle. Its radius and its moment of inertia about the axle is . It is initially at 2012 (Mains)Angular momentum and Angular impulse
  7. 7The moment of inertia of a uniform circular disc is maximum about an axis perpendicular to the disc and passing through2012 (Mains)Moment of inertia of rigid bodies
  8. 8If is escape velocity and is orbital velocity of a satellite for orbit close to the Earth's surface, then these are related by2012 (Mains)Motion of satellite
  9. 9Which one of the following plots represents the variation of gravitational field on a particle with distance due to a thin spherical shell o2012 (Mains)Gravitational field
  10. 10A slab of stone of area of and thickness is exposed on the lower surface to steam at . A block of ice at rests on the upper surface of the s2012 (Mains)Conduction
  11. 11An ideal gas goes from state to state via three different processes as indicated in the diagram If indicate the heat absorbed by the gas alo2012 (Mains)First Law of Thermodynamics
  12. 12The equation of a simple harmonic wave is given by where and are in metres and is in seconds. The ratio of maximum particle velocity to the 2012 (Mains)Simple Harmonic Motion
  13. 13A train moving at a speed of towards a stationary object, emits a sound of frequency . Some of the sound reaching the object gets reflected 2012 (Mains)Doppler's Effect
  14. 14Two metallic spheres of radii and are given charges of and , respectively. If these are connected by a conducting wire, the final charge on 2012 (Mains)Electric Potential and Potential Energy
  15. 15A parallel plate capacitor has a uniform electric field in the space between the plates. If the distance between the plates is and area of e2012 (Mains)Force and Energy stored in capacitor
  16. 16The power dissipated in the circuit shown in the figure is 30 Watt. The value of is2012 (Mains)Resistance and Resistivity
  17. 17A cell having an and internal resistance is connected across a variable external resistance . As the resistance is increased, the plot of po2012 (Mains)Electric Cell or Battery
  18. 18A proton carrying kinetic energy is moving in a circular path of radius in uniform magnetic field. What should be the energy of an -particle2012 (Mains)Motion of Charged Particle in Magnetic Field
  19. 19A magnetic needle suspended parallel to a magnetic field requires of work to turn it through . The torque needed to maintain the needle in t2012 (Mains)Force and Torque on Current Carrying Conductor
  20. 20In a coil of resistance , the induced current developed by changing magnetic flux through it, is shown in figure as a function of time. The 2012 (Mains)Magnetic Flux, Faraday's and Lenz law
  21. 21The instantaneous values of alternating current and voltages in a circuit are given as The average power in Watts consumed in the circuit is2012 (Mains)Alternating Current, Voltage and Power
  22. 22The ratio of amplitude of magnetic field to the amplitude of electric field for an electromagnetic wave propagating in vacuum is equal to2012 (Mains)Electromagnetic Waves and Maxwell's equations
  23. 23For the angle of minimum deviation of a prism to be equal to its refracting angle, the prism must be made of a material whose refractive ind2012 (Mains)Prism and Dispersion of Light
  24. 24A rod of length lies along the principal axis of a concave mirror of focal length in such a way that its end closer to the pole is away from2012 (Mains)Mirror Formula, Reflection in Spherical Mirror
  25. 25The transition from the state to in a hydrogen like atom results in ultraviolet radiation. Infrared radiation will be obtained in the transi2012 (Mains)Atomic Spectrum
  26. 26The half life of a radioactive nucleus is 50 days. The time interval between the time when of it has decayed and the time when of it had dec2012 (Mains)Radioactivity
  27. 27The input resistance of a silicon transistor is . Base current is changed by which results in a change in collector current by . This transi2012 (Mains)Junction Transistors
  28. 28To get an output in given circuit which of the following input will be correct2012 (Mains)Logic gates
  29. 29If the momentum of an electron is changed by , then the de-Broglie wavelength associated with it changes by . The initial momentum of electr2012 (Mains)Matter Waves
  30. 30Two radiations of photon energies and , successively illuminate a photosensitive metallic surface of work function . The ratio of the maximu2012 (Mains)Photoelectric Effect

Zoology

  1. 1The four sketches (I, II, III and IV) given below, represent four different types of animal tissues. Which one of these is correctly identif2012 (Mains)Animal Tissue
  2. 2Which one of the following pairs of chemical substances, is correctly categorised?2012 (Mains)Introduction
  3. 3Where do certain symbiotic microorganisms normally occur in human body?2012 (Mains)Intestine
  4. 4Given below is the diagrammatic sketch of a certain type of connective tissue. Identify the parts labelled A, B, C and D, and select the rig2012 (Mains)Connective Tissue
  5. 5Which one of the following human organs is often called the 'graveyard' of RBCs?2012 (Mains)Blood
  6. 6Which one of the following options gives the correct categorisation of six animals according to the type of nitrogenous wastes (A, B, C), th2012 (Mains)Introduction
  7. 7A fall in glomerular filtration rate (GFR) activates2012 (Mains)Mammalian Urinary System
  8. 8Which one of the following characteristics is common both in humans and adult frogs?2012 (Mains)Introduction
  9. 9The supportive skeletal structures in the human external ears and in the nose tip are examples of2012 (Mains)Connective Tissue
  10. 10Identify the human developmental stage shown below as well as the related right place of its occurrence in a normal pregnant woman and selec2012 (Mains)Embryology
  11. 11The secretory phase in the human menstrual cycle is also called2012 (Mains)Female Reproductive System
  12. 12What is it that forms the basis of DNA fingerprinting?2012 (Mains)DNA Fingerprinting
  13. 13Which one of the following sets of items in the options 1-4 are correctly categorised with one exception in it?2012 (Mains)Genetic Code
  14. 14Which one of the following represents a palindromic sequence in DNA?2012 (Mains)Principles of Biotechnology
  15. 15Which one of the following is a wrong statement regarding mutations?2012 (Mains)Mutation
  16. 16A test cross is carried out to2012 (Mains)Test Cross
  17. 17Read the following four statement. I. In transcription, adenosine pairs with uracil. II. Regulation of lac operon by repressor is referred t2012 (Mains)Transcription
  18. 18Represented below is the inheritance pattern of a certain type of traits in humans. Which one of the following conditions could be an exampl2012 (Mains)Genetic Disorders
  19. 19Read the following four statements : I. Colostrum is recommended for the new born because it is rich in antigens. II. Chikengunya is caused 2012 (Mains)Acquired Immunity
  20. 20Identify the molecules (a) and (b) shown below and select the right option giving their source and use I. II.2012 (Mains)Drug Addiction
  21. 21Which one of the following statements is correct with respect to immunity?2012 (Mains)Acquired
  22. 22In gobar gas, the maximum amount is that of2012 (Mains)Production of Biogas
  23. 23The domestic sewage in large cities2012 (Mains)Sewage Treatment
  24. 24Tobacco plants resistant to a nematode have been developed by the introduction of DNA that produced (in the host cells)2012 (Mains)Application in Agriculture
  25. 25Biolistics (gene-gun) is suitable for2012 (Mains)Tools of Recombinant DNA Technology
  26. 26The first clinical gene therapy was given for treating2012 (Mains)Application in Medicine
  27. 27In genetic engineering, the antibiotics are used2012 (Mains)Principles of Biotechnology
  28. 28The figure below shows three steps (I, II, III) of Polymerase Chain Reaction (PCR). Select the option giving correct identification together2012 (Mains)Separation and Isolation of DNA Fragments
  29. 29The idea of mutations was brought forth by2012 (Mains)Mutation
  30. 30Green revolution in India occurred during2012 (Mains)Plant Breeding

Frequently Asked Questions

1.How many questions are in the NEET 2012 Mains paper?

This paper has 120 questions in total - 30 each from Botany, Chemistry, Physics, and 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.Where can I find the Screening paper for the same year?

The NEET 2012 Screening paper is listed separately - you can switch to it from the "NEET Paper Wise PYQs" panel, under NEET 2012.

4.What is the structure of the NEET 2012 Mains paper?

The NEET 2012 Mains paper on MARKS has 120 questions, organised by subject:

  • Botany: 30 questions - 30 single-correct.
  • Chemistry: 30 questions - 30 single-correct.
  • Physics: 30 questions - 30 single-correct.
  • Zoology: 30 questions - 30 single-correct.
5.What is the difficulty level of the NEET 2012 Mains paper?

Each question on MARKS carries a difficulty rating. Of the 120 rated questions in this paper, 46 (38%) are easy, 55 (46%) are medium and 19 (16%) are hard. Subject wise:

  • Botany: 10 easy, 16 medium, 4 hard
  • Chemistry: 13 easy, 10 medium, 7 hard
  • Physics: 15 easy, 9 medium, 6 hard
  • Zoology: 8 easy, 20 medium, 2 hard
6.Which chapters had the most questions in the NEET 2012 Mains paper?

The chapters with the most questions in each subject were:

  • Botany: Anatomy of Flowering Plants (3), Biological Classification (3), and Ecosystem (3).
  • Chemistry: Electrochemistry (4), Aldehydes and Ketones (3), and Chemical Bonding and Molecular Structure (3).
  • Physics: Current Electricity (2), Dual Nature of Matter (2), and Gravitation (2).
  • Zoology: Biotechnology - Principles and Processes (4), Principles of Inheritance and Variation (4), and Excretory Products and their Elimination (3).
7.Are there any out-of-syllabus questions in the NEET 2012 Mains paper?

Yes. 16 of the 120 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.

8.Where can I find the solutions for the NEET 2012 Mains 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.

9.How should I use the NEET 2012 Mains paper to check my preparation?

Set a timer, attempt the 120 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 NEET. Repeating this with other papers shows whether the same weak spots keep coming back.

10.Will the NEET 2012 Mains paper help me prepare for NEET 2027?

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