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IAT (IISER) 2019

Browse the complete Biology, Chemistry, Mathematics, and Physics question set from the IAT (IISER) 2019 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 60 questions in total - 11 easy (18%), 44 moderate (73%) and 5 tough (8%). That's a fairly typical mix for this exam. By subject: Biology 53% easy, 47% moderate, 0% tough; Chemistry 20% easy, 80% moderate, 0% tough; Mathematics 0% easy, 73% moderate, 27% tough; Physics 0% easy, 93% moderate, 7% tough.

Biology questions were spread across 14 chapters, with Biological Classification (2), Biodiversity and its Conservation (1), and Biomolecules (B) (1) carrying the most weight. Chemistry questions were spread across 12 chapters, with Amines (2), Chemical Bonding and Molecular Structure (2), and Coordination Compounds (2) carrying the most weight. Mathematics questions were spread across 13 chapters, with Definite Integration (2), Vector Algebra (2), and Circle (1) carrying the most weight. Physics questions were spread across 13 chapters, with Electrostatics (3), Atomic Physics (1), and Capacitance (1) carrying the most weight.

Biology

  1. 1Which of the following produces a dikaryotic phase in Basidiomycetes?2019Kingdom Fungi
  2. 2In the standard nomenclature used for depicting floral formula, which type of flower is represented by ?2019Technical Description of Angiosperm
  3. 3Which one of the following statements is TRUE?2019Connective Tissue
  4. 4Match the entries in column I and column II. Which one of the following choices is correct?2019Enzymes
  5. 5Which one of the following helps in bacterial motility?2019Kingdom Monera
  6. 6During light reaction in chloroplasts of tobacco plants, where is the proton gradient generated?2019Mechanism of Photosynthesis
  7. 7Which of the following will NOT be triggered by the release of acetyl choline in the synapse at the neuromuscular junction during muscle con2019Locomotion
  8. 8The diagram below shows a typical ECG. If the AV node is not functional, which of the following options correctly represents the changes see2019Electrocardiograph
  9. 9Listed below are different plant reproductive strategies. I. Parthenocarpy II. Syngamy III. Apomixis IV. Polyembryony Which of them can give2019Asexual Reproduction
  10. 10The diagram below represents the pedigree of a certain genetic disease (affected individuals are shaded). What is the mode of inheritance of2019Genetic Disorders
  11. 11An E. coli whose DNA is fully labeled by is grown in a medium containing . What will be the percentage of hybrid and light DNA molecules at 2019Replication
  12. 12The following plots represent the body size distributions of a fruit fly population. Dashed lines represent the ancestral distributions and 2019Evidences of Evolution
  13. 13What are the types of immunity acquired by i) transfer of antibodies to the foetus via the placenta and ii) vaccination of an infant?2019Acquired
  14. 14Which among the following correctly represents the sequence of events for a normal polymerase chain reaction?2019Separation and Isolation of DNA Fragments
  15. 15Loss of biodiversity occurs due to the growth of carrot grass (Parthenium sp.). This is an example of?2019Loss of Biodiversity

Chemistry

  1. 1What are the correct orders of bond lengths and bond dissociation enthalpies for and ? (where or Cl )2019Molecular Orbital Theory
  2. 2Which is the appropriate combination of spin configuration and colour for the anionic complex is a monodentate and monoanionic ligand2019Crystal Field Theory
  3. 3Which of the following combination of elements forms interstitial hydrides?2019Hydrides
  4. 4How many geometrical isomers are possible for the square planar complex pyridine2019Isomerism of coordination compounds
  5. 5A molecular adduct is formed between and . Which of the following values describe the coordination number ( CN ), valency ( V ) and oxidatio2019Covalent and Co-ordinate Bonding
  6. 6While making paneer (cottage cheese) from milk by adding dilute acetic acid, the milk proteins undergo2019Proteins
  7. 7What is the final major product of the following reaction?2019Preparation and Properties of Geminal and Vicinal Dihalides
  8. 8Identify the final major product in the following reaction sequence.2019Preparation and Properties of Amines
  9. 9Identify the compound in the following reaction.2019Preparation and Properties of Amines
  10. 10Which one among the following compounds is aromatic?2019Conjugation and Aromaticity
  11. 11Using the Arrhenius equation, find out the value of at ?2019Arrhenius theory
  12. 12Which one of the following is NOT an example of heterogeneous equilibrium?2019Law of Mass Action, Equilibrium Constant (Kc and Kp) and its Application
  13. 13At of is dissociated to . What is the standard Gibbs change at and 1 atm pressure for this process?2019Third law of thermodynamics
  14. 14For a cell for the half cells are given as: at . What is the value of , where is the equilibrium constant for the reaction ? Given, .2019Cells and Electrode Potential, Nernst Equation
  15. 15Match the following:2019Non-stoichiometric defects

Mathematics

  1. 1Let be the roots of the equation , for . Then, the sum equals to2019nth roots of unity
  2. 2How many solutions does the equation have in the interval ?2019Solving Trigonometric Equation
  3. 3Let be a matrix with real entries. Consider the sets Suppose . Then, which one of the following statements is necessarily true?2019System of Linear Equations
  4. 4Consider 5 straight lines in a plane such that no two of them are parallel and no three of them intersect at a point. Then, the number of di2019Straight Lines
  5. 5Consider the circle that passes through the points and having the smallest area. Then, the equation of the tangent to the circle at is2019Tangent to circle
  6. 6Let be a continuous function. Consider the region For which one of the following functions , the area of the region is the largest?2019Properties of Definite Integration
  7. 7Let be a continuous function. Then, is surjective if2019Types of Function (Mapping)
  8. 8The limit2019Miscellaneous
  9. 9The sum of consecutive terms of an arithmetic progression consisting of integers is 161 . Then, a possible value of is2019Arithmetic Progression
  10. 10Let be a non-zero even function such that Then, the value of the integral is2019Properties of Definite Integration
  11. 11What is the mean deviation about the mean for the following data?2019Mean
  12. 12Let be a non-empty set such that the total number of subsets of containing at most two elements is equal to 16 . Then, the number of element2019Combination
  13. 13Consider the parallelogram as shown in the figure, where , for some positive integer . Suppose the length of is , then the length of is2019Algebra of Vectors
  14. 14Let and denote the standard unit vectors in along the -axis, -axis and -axis, respectively. Consider the sets Then, the number of elements i2019Algebra of Vectors
  15. 15What is the probability that 3 randomly chosen elements from the set satisfy ?2019Classical Definition of Probability

Physics

  1. 1A particle of mass is rotating in a circular orbit of radius under the action of gravity in the presence of another stationary particle of v2019Motion of satellite
  2. 2A point electric charge is placed at a corner of a cube as shown in the figure. What is the electric flux passing through the shaded surface2019Electric Flux and Gauss Law
  3. 3Neutral gas molecules, each of mass , are at a temperature in a container at zero gravity. How does the average de Broglie wavelength of a m2019Matter Waves
  4. 4Consider a particle of unit mass being thrown with an initial velocity making an angle with the horizontal ground. What is the magnitude of 2019Projectile motion
  5. 5Consider two long thin conductors and each carrying current as shown in the figure. Considering to be fixed, which of the following statemen2019Force and Torque on Current Carrying Conductor
  6. 6What is the average kinetic energy of molecules of an ideal gas leaking freely through an orifice of a container which has molecules at pres2019Pressure and Energy of gas
  7. 7Which of the following is an expression for energy in terms of the Planck's constant , the velocity of light and the Gravitational constant 2019Dimensions
  8. 8A solid block on a frictionless surface is connected to two rigid supports on the left and right side by springs of spring constants and res2019Time Period and Frequency
  9. 9A capacitor with capacitance consists of two concentric spherical conductors. If the radii of the inner and the outer spherical conductors a2019Capacitance
  10. 10What is the time taken by the capacitor in the given circuit to charge to of its full capacity?2019Charging and Discarging of capacitors
  11. 11The allowed energy levels of electrons in a Hydrogen atom are given by . For electronic transition in Hydrogen atom, what is the maximum fre2019Bohr's Atomic Model
  12. 12Which of the following statements about the P-V diagram of an ideal gas of fixed number of particles is incorrect?2019Thermodynamic Processes
  13. 13A cube, a cylinder (of height equal to its diameter) and a sphere, all solid, are made of a metal and are of identical mass. If all the thre2019Radiation
  14. 14An LED display consists of 100 pixels per . Consider that the diameter of the pupil of the eye is 5 mm and the average wavelength of the dis2019Diffraction of Light
  15. 15Two equal positive charges are placed at the vertices and of an isosceles triangle of base and height , as shown in the adjacent figure. Whe2019Electric Field and Electric Field Lines

Frequently Asked Questions

1.How many questions are in the IAT (IISER) 2019 paper?

This paper has 60 questions in total - 15 each from Biology, Chemistry, Mathematics, and Physics.

2.Can I practise questions from just one subject?

Yes. Use the Biology, 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 IAT (IISER) 2019 paper structured?

The IAT (IISER) 2019 paper on MARKS has 60 questions, organised by subject:

  • Biology: 15 questions - 15 single-correct.
  • Chemistry: 15 questions - 15 single-correct.
  • Mathematics: 15 questions - 15 single-correct.
  • Physics: 15 questions - 15 single-correct.
4.How difficult is the IAT (IISER) 2019 paper?

Each question on MARKS carries a difficulty rating. Of the 60 rated questions in this paper, 11 (18%) are easy, 44 (73%) are medium and 5 (8%) are hard. Subject wise:

  • Biology: 8 easy, 7 medium, 0 hard
  • Chemistry: 3 easy, 12 medium, 0 hard
  • Mathematics: 0 easy, 11 medium, 4 hard
  • Physics: 0 easy, 14 medium, 1 hard
5.Which chapters were asked the most in the IAT (IISER) 2019 paper?

The chapters with the most questions in each subject were:

  • Biology: Biological Classification (2).
  • Chemistry: Amines (2), Chemical Bonding and Molecular Structure (2), and Coordination Compounds (2).
  • Mathematics: Definite Integration (2) and Vector Algebra (2).
  • Physics: Electrostatics (3).
6.Where can I find the solutions for the IAT (IISER) 2019 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 IAT (IISER) 2019 paper to check my preparation?

Set a timer, attempt the 60 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 IAT (IISER). Repeating this with other papers shows whether the same weak spots keep coming back.

8.Will the IAT (IISER) 2019 paper help me prepare for IAT (IISER) 2027?

Yes. Every past paper shows the question styles and topics IAT (IISER) 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.