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NEST (NISER) 2019 Session 1

Browse the complete Biology, Chemistry, Mathematics, and Physics question set from the NEST (NISER) 2019 Session 1 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 59 questions in total - 3 easy (5%), 40 moderate (68%) and 16 tough (27%). That's a fairly typical mix for this exam. By subject: Biology 7% easy, 80% moderate, 13% tough; Chemistry 0% easy, 80% moderate, 20% tough; Mathematics 14% easy, 50% moderate, 36% tough; Physics 0% easy, 60% moderate, 40% tough.

Biology questions were spread across 9 chapters, with Molecular Basis of Inheritance (4), Biomolecules (B) (2), and Cell - The Unit of Life (2) carrying the most weight. Chemistry questions were spread across 10 chapters, with Haloalkanes and Haloarenes (3), Aldehydes and Ketones (2), and Thermodynamics (C) (2) carrying the most weight. Mathematics questions were spread across 12 chapters, with Functions (2), Straight Lines (2), and Application of Derivatives (1) carrying the most weight. Physics questions were spread across 14 chapters, with Thermodynamics (2), Atomic Physics (1), and Capacitance (1) carrying the most weight.

Biology

  1. 1Phylogenetic relationship among plants based on their shared characters is shown in the cladogram below. Identify the plants and in the corr2019 (Session 1)Introduction
  2. 2Each neuron has a cell body, axon, and dendrites. The dendrites are the protoplasmic extensions of the nerve cell. The axodendritic type of 2019 (Session 1)The Synapse
  3. 3The common morning glory (Ipomoea purpurea) exhibits two flower colours, where purple is dominant over pink. Within a population of common m2019 (Session 1)Mendel’s Work and Results
  4. 4Radioisotopes are frequently used in the study of cellular processes. A culture of Escherichia coli is grown at in a minimal medium containi2019 (Session 1)Nucleic Acid
  5. 5Seed traits of a given plant species following genetic inheritance are: A cross was performed between two plants, and of the same species; w2019 (Session 1)Mendel’s Work and Results
  6. 6Arrange the following biological discoveries in the correct chronology from the earliest to the latest. i. British biochemist Frederick Sang2019 (Session 1)The Search for Genetic Material
  7. 7The haemocytometer is a thickened glass slide with small chamber of grids cut into the glass and is used to count cells. Each chamber has a 2019 (Session 1)Cell Organelles
  8. 8A scientist performed enzyme kinetics and obtained velocity as a function of substrate concentration and the values are given in the table b2019 (Session 1)Enzymes
  9. 9Consider that plant species is more efficient than plant species in nutrient uptake, but plant is a better seed disperser. In this example, 2019 (Session 1)Populations
  10. 10A small viral peptide can insert its 6 amino acids (represented as a barrel) into the lipid bilayer as depicted in the figure given below. T2019 (Session 1)Cell Membranes
  11. 11DNA analysis is based upon the principles of DNA renaturation kinetics. The rate at which heat-denatured DNA sequences in solution will rena2019 (Session 1)Properties of Genetic Material
  12. 12Which among the following statements are correct? (i) The quantum yield of photosynthesis decreases with increase in temperature in C3 plant2019 (Session 1)Mechanism of Photosynthesis
  13. 13Proteins P1 and P2 bind to each other to form a complex. This complex has a high binding affinity to a specific element on the promoter sequ2019 (Session 1)Regulation of Gene Expression
  14. 14Select the option containing the correct matched pairs.2019 (Session 1)Acquired immunity
  15. 15Following is the sequence of a gene that produces peptide ' P ' and has a promoter sequence in the 5' upstream region of the sense strand an2019 (Session 1)Genetic Code

Chemistry

  1. 1Consider two states, A and B , of a thermodynamic system. Let Path 1 represent a reversible process for going from A to B , while Path 2 rep2019 (Session 1)First Law and Basic Fundamentals of Thermodynamics
  2. 2A compound is formed by two elements and . Atoms of element form hexagonal close packing (hcp) lattice and those of the elements occupy (2/32019 (Session 1)Cubic system
  3. 3In an reaction, the group that leaves the substrate is called a leaving group. The ease of departure of leaving group is determined on the b2019 (Session 1)Preparation and Properties of Monohalides
  4. 4Phosphorous forms different oxyacids such as, hypophosphorous acid , orthophosphorous acid and orthophosphoric acid . Orthophosphorous acid 2019 (Session 1)Phosphorus and Its Compounds
  5. 5The major substitution product of the following reaction is2019 (Session 1)Preparation and Properties of Aryl Halides
  6. 6In H atom, the electron is bound by Coulomb interaction and its three quantum numbers are related as . The spin quantum number and . Thus, t2019 (Session 1)Electronic configuration
  7. 7Iron oxide can be reduced by CO and . Blast furnace is historically important as it provided iron in reasonably pure form. In Blast furnace,2019 (Session 1)Reduction to Crude Metal
  8. 8Two vessels X and Y contain aqueous solutions of a weak acid HA and its salt NaA , respectively. The following two equilibria and , exist in2019 (Session 1)PH of solutions
  9. 9Organometallic compounds are those compounds which contain a carbon-metal (CM) bond. They react as nucleophilic reagents, where the carbon b2019 (Session 1)Grignard Reagent
  10. 10Metal ions in the fourth period are expected to show decrease in their ionic radii of the ions from to , due to the increase in the nuclear 2019 (Session 1)Properties of D-block elements
  11. 11When a mixture of NaCl , conc. and is heated, red vapours of compound are formed. These vapours dissolve in aqueous NaOH to form a yellow so2019 (Session 1)Halogens and Its Compounds
  12. 12The following reaction leads to aldol products (olefins). The number of theoretically possible products is2019 (Session 1)Chemical reactions for aldehydes and ketones
  13. 13A thermally insulated vessel is partitioned into two compartments by a fixed diathermal (heat conducting) wall and each compartment contains2019 (Session 1)Entropy and Second law of thermodynamics
  14. 14The correct statement(s) with respect to the following sequence of reactions is/are2019 (Session 1)Chemical reactions for aldehydes and ketones
  15. 15Consider two vessels X and Y , each of volume V, and at temperature T , connected through a tube fitted with a stop cock. Vessel X initially2019 (Session 1)Law of Mass Action, Equilibrium Constant (Kc and Kp) and its Application

Mathematics

  1. 1Let be a function defined as . Then2019 (Session 1)Monotonicity
  2. 2Let be a triangle with and . Then the triangle is2019 (Session 1)Sum and Difference & Multiple angle Formula
  3. 3The tangents at the extremities of the latus rectum of the parabola meet at2019 (Session 1)Tangent to Parabola
  4. 4If are positive real numbers such that and , then equals2019 (Session 1)Inequalities
  5. 5A variable line in a plane passes through a fixed point and meets the coordinate axes at points and . Then the locus of the mid-point of is2019 (Session 1)Locus
  6. 6Let . If is an element of with argument , then the argument of is2019 (Session 1)Conjugate, modulus and argument
  7. 7A six-faced unbiased die is thrown until a number greater than 4 appears. The probability that this occurs on the -th throw, where is an eve2019 (Session 1)Bernoulli Trial and Binomial Distribution
  8. 8A positive integer is perfect if the sum of its positive divisors equals . If is a perfect number, then the sum of the reciprocal of its pos2019 (Session 1)Arithmetic Progression
  9. 9For a non-zero matrix with real entries, let be the sum of the diagonal entries of for any positive integer . Then2019 (Session 1)Product of Matrices
  10. 10For two vectors and , define Then2019 (Session 1)Product of 2 vectors
  11. 11Let be an integer and . Define and for any . Then2019 (Session 1)Permutation
  12. 12Let be a function given by . Then2019 (Session 1)Range
  13. 13The -intercepts of three parallel lines are , and the sum of their -intercepts is 36. Then the slope of these three parallel lines is2019 (Session 1)Basic Forms of Straight Line
  14. 14Let be a non-constant continuous function different from the identity function. Then2019 (Session 1)Continuity

Physics

  1. 1The voltage across a capacitor of capacitance discharging through a resistance is given by . The initial voltage is and . The circuit is clo2019 (Session 1)Charging and Discarging of capacitors
  2. 2A spring, fixed at one end, is connected to a steel wire of length . The other end of the steel wire is connected to an AC source providing 2019 (Session 1)Vibration of String
  3. 3An iron slab and a copper slab having rectangular cross-sections and identical dimensions are welded together end to end. The outer ends of 2019 (Session 1)Conduction
  4. 4A torus with mean radius and uniform cross sectional area carries a coil with turns wound uniformly around it. The medium in the torus is ai2019 (Session 1)Self and Mutual Inductance
  5. 5The compressor of a Carnot refrigerator consumes 5 J of energy per cycle. The hot reservoir is at temperature and the amount of energy relea2019 (Session 1)Heat Engine, Refrigerator and<br>Second Law of Thermodynamics
  6. 6White light with uniform intensity across the visible wavelength range of 400 nm to 800 nm is incident almost perpendicularly from above ont2019 (Session 1)Interference of Light
  7. 7A block of mass at rest on the floor is attached to a ball of mass via a light inextensible string of length which passes over a light small2019 (Session 1)Energy
  8. 8The speed, frequency of revolution and the radius of the electron in the orbital in the Bohr model are denoted by and , respectively. Let be2019 (Session 1)Bohr's Atomic Model
  9. 9Consider a closed system of three charged particles with charges and respectively, where is the electronic charge. Their corresponding masse2019 (Session 1)Magnetic Moment
  10. 10Consider a set of 12 equal charges each , arranged to form two concentric regular hexagons in the -plane, centred at origin. The edges of th2019 (Session 1)Electric Field and Electric Field Lines
  11. 11A magnet of weight 2 N is placed on a non-magnetic horizontal table of weight 20 N. Another magnet of identical geometry is kept on the unde2019 (Session 1)Magnetism and Properties of Magnet
  12. 12A square object of size consists of two dark spots which are apart. The object is viewed using a compound microscope of numerical aperture 02019 (Session 1)Optical Instruments
  13. 13has a half life of 5730 years and its abundance in the atmosphere is 1 in carbon atoms. A fresh sample of 0.001 mole of collected from the a2019 (Session 1)Radioactivity
  14. 14A horizontal cylinder closed at one end contains an ideal gas which is compressed by a tight-fitting and frictionless piston. The piston is 2019 (Session 1)Thermodynamic Processes
  15. 15A long container has a square base of side . The height to which water should be filled so that the force on one of its side surface is the 2019 (Session 1)Pressure and thrust

Frequently Asked Questions

1.How many questions are in the NEST (NISER) 2019 Session 1 paper?

This paper has 59 questions in total - 15 from Biology, 15 from Chemistry, 14 from Mathematics, and 15 from 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 2 paper for the same year?

The NEST (NISER) 2019 Session 2 paper is listed separately - you can switch to it from the "NEST (NISER) Paper Wise PYQs" panel, under NEST (NISER) 2019.

4.How is the NEST (NISER) 2019 Session 1 paper structured?

The NEST (NISER) 2019 Session 1 paper on MARKS has 59 questions, organised by subject:

  • Biology: 15 questions - 10 single-correct and 5 multiple-correct.
  • Chemistry: 15 questions - 10 single-correct and 5 multiple-correct.
  • Mathematics: 14 questions - 9 single-correct and 5 multiple-correct.
  • Physics: 15 questions - 10 single-correct and 5 multiple-correct.
5.How difficult is the NEST (NISER) 2019 Session 1 paper?

Each question on MARKS carries a difficulty rating. Of the 59 rated questions in this paper, 3 (5%) are easy, 40 (68%) are medium and 16 (27%) are hard. Subject wise:

  • Biology: 1 easy, 12 medium, 2 hard
  • Chemistry: 0 easy, 12 medium, 3 hard
  • Mathematics: 2 easy, 7 medium, 5 hard
  • Physics: 0 easy, 9 medium, 6 hard
6.Which chapters were asked the most in the NEST (NISER) 2019 Session 1 paper?

The chapters with the most questions in each subject were:

  • Biology: Molecular Basis of Inheritance (4), Biomolecules (B) (2), and Cell - The Unit of Life (2).
  • Chemistry: Haloalkanes and Haloarenes (3), Aldehydes and Ketones (2), and p Block Elements (Group 15, 16, 17 & 18) (2).
  • Mathematics: Functions (2) and Straight Lines (2).
  • Physics: Thermodynamics (2).
7.Where can I find the solutions for the NEST (NISER) 2019 Session 1 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) 2019 Session 1 paper to check my preparation?

Set a timer, attempt the 59 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) 2019 Session 1 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.