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NEST (NISER) 2023 Session 2

Browse the complete Biology, Chemistry, Mathematics, and Physics question set from the NEST (NISER) 2023 Session 2 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 68 questions in total - 2 easy (3%), 57 moderate (84%) and 9 tough (13%). That's a fairly typical mix for this exam. By subject: Biology 0% easy, 94% moderate, 6% tough; Chemistry 0% easy, 94% moderate, 6% tough; Mathematics 6% easy, 76% moderate, 18% tough; Physics 6% easy, 71% moderate, 24% tough.

Biology questions were spread across 11 chapters, with Principles of Inheritance and Variation (4), Evolution (3), and Organisms and Populations (2) carrying the most weight. Chemistry questions were spread across 15 chapters, with Electrochemistry (2), Hydrocarbons (2), and Alcohols Phenols and Ethers (1) carrying the most weight. Mathematics questions were spread across 12 chapters, with Application of Derivatives (3), Permutation Combination (3), and Sets and Relations (2) carrying the most weight. Physics questions were spread across 15 chapters, with Ray Optics (2), Thermodynamics (2), and Atomic Physics (1) carrying the most weight.

Biology

  1. 1An example of multiple alleles is seen at a locus that determines the feather pattern of mallard ducks. One allele M produces the wild-type 2023 (Session 2)Multiple Alleles / Co-dominance
  2. 2In an experiment with a facultative aerobic bacterial species, identical number of cells were inoculated in two 500 ml jars and N with 250 m2023 (Session 2)Introduction
  3. 3Restriction enzymes recognize certain sequences within the DNA and cleave them. If a DNA fragment is cleaved with BamHI restriction enzyme, 2023 (Session 2)Tools of Recombinant DNA Technology
  4. 4In the given pedigree, circles represent females and squares represent males. Filled shapes indicate affected individuals while unfilled sha2023 (Session 2)Genetic Disorders
  5. 5The table below presents the kinetic data obtained for an enzyme in the absence and presence of two different inhibitors P and Q , each at a2023 (Session 2)Enzymes
  6. 6A mutant bacterial strain having a shorter glycolytic pathway was discovered. If the mutant bacteria are grown aerobically, the net ATP yiel2023 (Session 2)Glycolysis
  7. 7Tissue damage alters the surface-adhesive behaviour of leukocytes resulting in leukocyte rolling. This involves several cycles of attachment2023 (Session 2)Blood
  8. 8Female beetles are known to prefer males with bigger mandibles. In an experiment, a population of these beetles were picked and divided into2023 (Session 2)Evidences of Evolution
  9. 9Autoradiography of a green leaf of summer squash (upper panel) showed import of carbon from the source over a period of time. A similar expe2023 (Session 2)Transport of Mineral Nutrients
  10. 10In a true-breeding homozygous lines of snapdragon, Antirrhinium majus, white coloured flower of personate shape was crossed with red coloure2023 (Session 2)Mendel's Laws of Inheritance
  11. 11The life cycle of yeast Saccharomyces cerevisiae which reproduces both sexually as well as asexually is depicted below. and P represent2023 (Session 2)Kingdom Fungi
  12. 12Clutch size in birds refers to the number of eggs laid in a single nesting attempt by a nesting pair of birds while number in brood refers t2023 (Session 2)Populations
  13. 13UPGMA is a method of constructing phylogenetic trees using distance matrices between organisms. The following matrix depicts distance (measu2023 (Session 2)Evidences of Evolution
  14. 14A population has three genotypes, and YY , where X is dominant over the Y allele. The number of each genotype in the population is as follow2023 (Session 2)Mendel's Laws of Inheritance
  15. 15The population sizes of two organisms P and Q growing in a given habitat is shown. If P and Q share ecological relationship, then they most 2023 (Session 2)Populations
  16. 16Specific fluorescence probes are used to label proteins present on the surface of specific immune cell type. A scientist labelled protein wi2023 (Session 2)Immune System Disorder
  17. 17The following graphs depict three different scenarios where the average body size of a population (assuming a normal distribution with a sin2023 (Session 2)Modern Theory of Evolution

Chemistry

  1. 1The correct statement regarding the halides and monoxides of the alkaline earth metals is:2023 (Session 2)Alkaline Earth Metals
  2. 2The largest crystal field stabilization energy is for2023 (Session 2)Crystal Field Theory
  3. 3The equation appropriate for the exact calculation of pH of an aqueous solution of HCl at a concentration (CHCl), close to , is given by2023 (Session 2)PH of solutions
  4. 4The reaction of methyl chloride with silicon at 573 K in the presence of copper as a catalyst produces substitued chlorosilanes. Hydrolysis 2023 (Session 2)Silicon and Its Compounds
  5. 5Consider a hypothetical one-electron atom, where the nucleus and the electron interact with a force . Here, is the distance between the elec2023 (Session 2)Bohr's model
  6. 6The correct graph representing the trend in the atomic radius of the boron family is2023 (Session 2)Periodic properties
  7. 7Biological standard potential is defined as the potential measured at . The species nicotinamide adenine dinucleotide (NADH) and its oxidise2023 (Session 2)Cells and Electrode Potential, Nernst Equation
  8. 8Ammonium sulfate on reaction with sodium hydroxide produces compounds and R along with water. Catalytic oxidation of Q by atmospheric oxygen2023 (Session 2)Nitrogen and Its Compounds
  9. 9In an aqueous solution, glucose exists in cyclic and open-chain forms, in equilibrium, as shown below. Glucose solution does not give positi2023 (Session 2)Carbohydrates
  10. 10In the reaction shown below, the major product is2023 (Session 2)Preparation and Properties of Monohalides
  11. 11Consider the three electrodes , and , for which the standard electrode (oxidation) potentials are: , and , respectively. The standard EMF of2023 (Session 2)Cells and Electrode Potential, Nernst Equation
  12. 12The temperature dependence of the rate constants of a chemical reaction can be expressed in terms of Arrhenius equation, which contains the 2023 (Session 2)Arrhenius theory
  13. 13Consider three liquids: water, dilute aqueous solution of glucose, and dilute aqueous solution of NaCl . The aqueous solutions of glucose an2023 (Session 2)Colligative Properties and Abnormal Molecular Masses
  14. 14Consider the following sequence of reactions. The correct reagents and required are:2023 (Session 2)Preparation and Properties of Carboxylic Acids
  15. 15In an electrophilic addition reaction of olefins, the stability of carbocations plays a crucial role. Consider the compounds and that can un2023 (Session 2)Reactions of alkenes
  16. 16One mole of toluene on reaction with 2 moles of in the presence of light gives , which on hydrolysis at gives Y . Y on reaction with conc. a2023 (Session 2)Reactions of aromatic compounds
  17. 17Consider the following acid hydrolysis of esters. The correct statement(s) about and is(are):2023 (Session 2)Preparation and Properties of Alcohols

Mathematics

  1. 1Let be the function on defined by , where . Then the set of all possible values of for which is strictly increasing is2023 (Session 2)Monotonicity
  2. 2If a teacher assigns homework on the th day, the probability that she will assign homework on the th day is . If she does not assign homewor2023 (Session 2)Conditional Probability and Multiplication Theorem
  3. 3If , where and , then the value of is2023 (Session 2)Polar and Euler Form
  4. 4Let be a point in the Euclidean plane, with and nonzero. For any point on the -axis, let be the point of intersection of the line with the -2023 (Session 2)Coordinate System
  5. 5The value of is2023 (Session 2)Trigonometric Series
  6. 6Let be the set of all 4-digit natural numbers with the following properties: (i) every digit of any element of belongs to the set , (ii) eve2023 (Session 2)Permutation
  7. 7Let be a differentiable function on satisfying the conditions (i) for all , and (ii) for all . Then the value of is2023 (Session 2)Variable Separable Form
  8. 8Let be a triangle and let and denote the lengths of the sides , and respectively. Let and be positive real numbers such that Then2023 (Session 2)Sine Rule and its application
  9. 9Let and be a function. Let be a subset of such that the following conditions are satisfied: (i) if then , and (ii) if then . Then it follows2023 (Session 2)Questions on Symmetric Transitive and Reflexive Properties
  10. 10For , with , let denote the number of elements in the set . Then2023 (Session 2)Monotonicity
  11. 11Let for all . Then the number of points at which the graph of cuts the axis is2023 (Session 2)Monotonicity
  12. 12For let . Then2023 (Session 2)Properties of Definite Integration
  13. 13Let be the number of integers such that (i) where are non-negative integers , and (ii) is neither a square nor a cube of a natural number. T2023 (Session 2)Combination
  14. 14Let be the number of solutions of the equation with and taking non-negative integer values. Then2023 (Session 2)Division of Identical items
  15. 15Let and , be three circles having the same radius , which touch each other externally. Then2023 (Session 2)Equation of Circle & its intercept
  16. 16Let and be non-zero vectors. Let be the set of vectors such that . Then2023 (Session 2)Product of 2 vectors
  17. 17Let . Let be the equivalence relation on defined by if . For let denote the equivalence class of . Then2023 (Session 2)Questions on number of relations and sets

Physics

  1. 1A planet of mass is orbiting around a non-rotating star of mass am with an orbital radius . The star ejects mass radially outwards in a sphe2023 (Session 2)Motion of satellite
  2. 2An arrow is released from a rigid bow at time . The magnitude of the tension in the bowstring as a function of time is best desribed by2023 (Session 2)Simple Harmonic Motion
  3. 3The equivalent capacitance between P and Q for the infinite series of capacitors shown in the figure is2023 (Session 2)Grouping of capacitors
  4. 4Two air bubbles of equal initial volume rise from the bottom of a lake to the surface. One bubble ascends and expands adiabatically while th2023 (Session 2)Thermodynamic Processes
  5. 5A current I flows through a regular hexagonal loop of side length . The magnitude of the magnetic field at the centre is2023 (Session 2)Magnetic Field
  6. 6The temperature and pressure at the summit of Mt . Everest is and , respectively. The corresponding values at sea-level are and . Considerin2023 (Session 2)Pressure and Energy of gas
  7. 7In an isobaric process involving an ideal gas the mean distance between the molecules is quadrupled (four times). Then, the ratio of final t2023 (Session 2)Thermodynamic Processes
  8. 8A heavy disc of radius and mass is placed horizontally. A small coin of mass placed at a radial distance from the centre. The disc is now gi2023 (Session 2)Frictional force
  9. 9Consider the following four cylindrical tubes all of equal radii. The tubes and are of length . The tubes and are of length 1.5 . If the fun2023 (Session 2)Organ Pipe (Vibration of Air Column)
  10. 10Two radioactive samples and have the same number of atoms initially . The half life of is half the mean life of . Then the ratio when is clo2023 (Session 2)Radioactivity
  11. 11An electromagnetic wave, travelling in vacuum, is represented by where is the amplitude of the electric field. A square loop of side a is pl2023 (Session 2)Electromagnetic Waves and Maxwell's equations
  12. 12Consider the Bohr model of the hydrogen atom. Suppose that the charge of the proton were 1.1 . while the electron charge continued to be but2023 (Session 2)Bohr's Atomic Model
  13. 13Consider the experimental set-up shown in the figure to observe the interference pattern. Note that the prism angle is close to . The correc2023 (Session 2)Interference of Light
  14. 14A beam of monochromatic light is incident on one face of a prism of angle . If the angle of incidence is and the refractive index of the pri2023 (Session 2)Refraction of light from plane surface
  15. 15A current I is passing flowing through a thin copper slab placed on a diamond slab. The bottom surface of the diamond slab is maintained at 2023 (Session 2)Conduction
  16. 16The pair(s) with same dimensions is(are)2023 (Session 2)Dimensions
  17. 17A transparent glass slab of thickness is placed with its face on a horizontal table. A hemispherical water drop of radius condenses on the g2023 (Session 2)Refraction of light from plane surface

Frequently Asked Questions

1.How many questions are in the NEST (NISER) 2023 Session 2 paper?

This paper has 68 questions in total - 17 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.Where can I find the Session 1 paper for the same year?

The NEST (NISER) 2023 Session 1 paper is listed separately - you can switch to it from the "NEST (NISER) Paper Wise PYQs" panel, under NEST (NISER) 2023.

4.How is the NEST (NISER) 2023 Session 2 paper structured?

The NEST (NISER) 2023 Session 2 paper on MARKS has 68 questions, organised by subject:

  • Biology: 17 questions - 12 single-correct and 5 multiple-correct.
  • Chemistry: 17 questions - 12 single-correct and 5 multiple-correct.
  • Mathematics: 17 questions - 12 single-correct and 5 multiple-correct.
  • Physics: 17 questions - 12 single-correct and 5 multiple-correct.
5.How difficult is the NEST (NISER) 2023 Session 2 paper?

Each question on MARKS carries a difficulty rating. Of the 68 rated questions in this paper, 2 (3%) are easy, 57 (84%) are medium and 9 (13%) are hard. Subject wise:

  • Biology: 0 easy, 16 medium, 1 hard
  • Chemistry: 0 easy, 16 medium, 1 hard
  • Mathematics: 1 easy, 13 medium, 3 hard
  • Physics: 1 easy, 12 medium, 4 hard
6.Which chapters were asked the most in the NEST (NISER) 2023 Session 2 paper?

The chapters with the most questions in each subject were:

  • Biology: Principles of Inheritance and Variation (4), Evolution (3), and Organisms and Populations (2).
  • Chemistry: Electrochemistry (2) and Hydrocarbons (2).
  • Mathematics: Application of Derivatives (3), Permutation Combination (3), and Sets and Relations (2).
  • Physics: Ray Optics (2) and Thermodynamics (2).
7.Where can I find the solutions for the NEST (NISER) 2023 Session 2 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 NEST (NISER) 2023 Session 2 paper to check my preparation?

Set a timer, attempt the 68 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 NEST (NISER). Repeating this with other papers shows whether the same weak spots keep coming back.

9.Will the NEST (NISER) 2023 Session 2 paper help me prepare for NEST (NISER) 2027?

Yes. Every past paper shows the question styles and topics NEST (NISER) 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.