Biology
1. Which one of the following is not a correct statement? 2. Which of the following are likely to be present in deep sea water? 3. Pigment containing membranous extensions in some cyanobacteria are 4. Select the wrong statement 5. Isogamous condition with non-flagellated gametes is found in 6. Monoecious plant of Chara shows occurrence of 7. Read the following statements (A - E) and answer the question which follows them.
(A) In liverworts, mo 8. Which of the following are correctly matched with respect to their taxonomic classification? 9. One of the representatives of Phylum Arthropoda is 10. Match the name of the animal (column I), with one characteristic (column II), and the phylum/class (column III) to which 11. Which group of animals belong to the same phylum? 12. Among bitter gourd, mustard, brinjal, pumpkin, china rose, lupin, cucumber, sunhemp, gram, guava, beam, chilli, plum, pe 13. In China rose the flowers are 14. A phosphoglyceride is always made up of 15. Macromolecule chitin is 16. The essential chemical components of many coenzymes are 17. Transition state structure of the substrate formed during an enzymatic reaction is 18. The complex formed by a pair of synapsed homologous chromosomes is called 19. Which of the following criteria does not pertain to facilitated transport? 20. The first stable product of fixaation of atmospheric nitrogen in leguminous plants is 21. Which of the metabolites is common to respiration-mediated breakdown of fats, carbohydrates and proteins? 22. The three boxes in this diagram represent the three major biosynthetic pathway in aerobic respiration. Arrows represent 23. During seed germination its stored food is mobilized by 24. Select the correct match of the digested products in humans given in column $${\rm I}$$ with their absorption site and m 25. The diagram given here is the standard ECG of a normal person. The P-wave represents the
26. The H-zone in the skeletal muscle fibre is due to 27. Select the correct statement with respect to locomotion in humans. 28. The characteristic and an example of a synovial joint in humans is 29. The most abundant intracellular cation is 30. Which of the following statements is correct in relation to the endocrine system? 31. A pregnant female delivers a baby who suffers from stunted growth, mental retardation, low intelligence quotient and abn 32. Select the answer which correctly matches the endocrine gland with the hormone it secretes and its function/deficiency s 33. Seed coat is not thin, membranous in 34. Meiosis takes place in 35. Perisperm differs from endosperm in 36. Advantage of cleistogamy is 37. Megasporangium is equivalent to 38. Which one of the following statements is correct? 39. Product of sexual reproduction generally generates 40. What is the correct sequence of sperm formation? 41. Which of the following is not the function of placenta? 42. Menstrual flow occurs due to lack of : 43. Artificial insemination means : 44. One of the legal methods of birth control is : 45. Select the incorrect statement with regard to Haemophilia is : 46. Which idea is depicted by a cross in which the F1
generation resembles both the parents?
47. If two persons with 'AB' blood group marry and have sufficiently large number of children, these children
could be class 48. Which of the following cannot be detected in a developing foetus by amniocentesis ? 49. If both parents are carriers for thalessemia, which is an autosomal recessive disorder, what are the chances of
pregnanc 50. The diagram shows an important concept in the genetic implication of DNA. Fill in the blanks A to C.
51. Which enzyme will be produced in a cell in which there is a non-sense mutation in the lac Y gene ? 52. Which of the following statements is not true of two genes that show 50% recombination frequency ? 53. According to Darwin, the organic evolution is due to - 54. The tendency of population to remain in genetic equilibrium may be disturbed by : 55. Variation in gene frequencies within populations can occur by chance rather than by natural selection. This is
referred 56. The process by which organisms with different evolutionary history evolve similar phenotypic adaptations in
response to 57. The eye of octopus and eye of cat show different patterns of structure, yet they perform similar function, This
is an ex 58. Infection of Ascaris usually occurs by : 59. In plant breeding programmes, the entire collection (of plants/seeds) having all the diverse alleles for all
genes in a 60. A good producer of citric acid is
61. DNA fragments generated by the restriction endonucleases in a chemical reaction can be separated by : 62. Which of the following is not corretly matched for the organism and its cell wall degrading enzyme ? 63. The colonies of recombinat bacteria appear white in contrast to blue colonies of non-recombinant bacteria because of : 64. Which of the following Bt crops is being grown in India by the farmers ? 65. A sedentary sea anemone gets attached to the shell lining of hermit crab. The association is : 66. Besides paddy fields, cyanobacteria are also found inside vegetative part of : 67. A biologist studied the population of rats in a barn, He found that the average natality was 250, average
mortality 240, 68. Natural reservoir of phosphorus is : 69. Which one of the following processes during decomposition is correctly described ? 70. Secondary productivity is rate of formation of new organic matter by : 71. Which one of the following is not used for ex situ plant conservation? 72. Which of the following represent maximum number of species among global biodiversity ? 73. Which of the following represent maximum number of species among global biodiversity ? 74. Kyoto-Protocol was endorsed at : 75. Global warming can be controlled by : 76. The Air Prevention and control of pollution Act came into force in : 77. Lenticels are involved in 78. Age of a tree can be estimated by : 79. Interfascicular cambium develops from the cells of : 80. What external changes are visible after the last moult of a cockroach nymph ? 81. Which one of the following organelle in the figure correctly matches with its function ?
82. A major site for synthesis of lipids is : 83. The Golgi complex plays a major role : 84. A stage in cell division is
shown in the figure.
Select the answer which
gives correct identification of the stage with
85. The figure shows a diagrammatic view of human
respiratory system with labels A, B, C and D.
Select the option which give 86. The given figure shows schematic plan of blood
circulation in humans with labels A to D.
Identify the label and give its 87. Parts A, B, C and D of the human eye are shown
in the diagram. Select the option which gives
correct identification alon 88. A diagram showing axon terminal and synapse
is given. Identify correctly at least two of
A - D.
89. Figure shows human urinary system with
structures labelled A to D. Select option which
correctly identifies them and giv
Chemistry
1. 6.02 $$ \times $$ 1020 molecules of urea present in 100 mL of its solution. The concentration of solution is 2. What is the maximum numbers of electrons that can be associated with the following set of quantum numbers ?
n = 3, $$l$ 3. Based on equation E = $$-$$ 2.178 $$ \times $$ 10$$-$$18 J $$\left( {{{{Z^2}} \over {{n^2}}}} \right)$$, certain conclus 4. The value of Planck's constant is 6.63 $$ \times $$ 10$$-$$34 J s. The speed of light is 3 $$ \times $$ 1017 mm s$$-$$1 5. Which of the following is electron-deficient ? 6. XeF2 is isostructural with 7. Dipole-induced dipole interactions are present in which of the following pairs 8. Which of the following is a polar molecule? 9. Which of the following is paramagnetic? 10. Maximum deviation from ideal gas is expected from 11. A reaction having equal energies of activation for forward and reverse reactions has 12. KMnO4 can be prepared from K2MnO4 as per the reaction,
3MnO42$$-$$ + 2H2O $$\rightleftharpoons$$ 2MnO4$$-$$ + MnO2 + 13. Which of these is least likely to act as a lewis base ? 14. The radical,
is aromatic because it has 15. Structure of the compound whose IUPAC name is 3-Ethyl-2-hydroxy-4-methylhex-3-en-5-ynoic acid is 16. Some meta-directing substituents in aromatic substitution are given. Which one is most deactivating ? 17. The structure of isobutyl group in an organic compound is 18. Which of the following compounds will not undergo Friedal-Craft's reaction easily? 19. Among the following ethers, which one will produce methyl alcohol on treatment with hot concentrated HI? 20. The order of stability of the following tautomeric compounds is
21. Reaction by which benzaldehyde cannot be prepared 22. Nitrobenzene on reaction with conc. HNO3/H2SO4 at 80$$-$$100oC forms which one of the following products? 23. In the reaction
A is 24. Nylon is an example of 25. Which is the monomer of neoprene in the following? 26. A metal has a fcc lattice. The edge length of the unit cell is 404 pm. The density of the metal is 2.72 g cm$$-$$3. The 27. The number of carbon atoms per unit cell of diamond unit cell is 28. How many grams of concentrated nitric acid solution should be used to prepare 250 mL of 2.0 M HNO3? The concentrated ac 29. At 25oC molar conductance of 0.1 molar aqueous solution of ammonium hydroxide is 9.54 ohm$$-$$1 cm2 mol$$-$$1 and at inf 30. A button cell used in watches function as following.
Zn(s) + Ag2O(s) + H2O(l) $$\rightleftharpoons$$ 2Ag(s) + Zn2+(aq) 31. A hydrogen gas electrode is made by dipping platinum wire in a solution of HCl of pH = 10 and by passing hydrogen gas ar 32. What is the activation energy for a reaction if its rate doubles when the temperature is raised from 20oC to 35oC?
(R = 33. Which of these is not a monomer for a high molecular mass silicone polymer? 34. The basic structural unit of silicates is 35. Which of the following structure is similar to graphite? 36. Which is the strongest acid in the following? 37. Which one of the following molecules contains no $$\pi $$ bond? 38. Which of the following does not give oxygen on heating? 39. Roasting of sulphides gives the gas X as a byproduct. This is a colourless gas with choking smell of burnt sulphur and 40. Which of the following lanthanoid ions is diamagnetic?
(At. nos. Ce = 58, Sm = 62, Eu = 63, Yb = 70) 41. Identify the correct order of solubility in aqueous medium. 42. Which of the following statements about the interstitial compounds is incorrect? 43. Antiseptics and disinfectants either kill or prevent growth of microgaisms. Identify which of the following statements i 44. A magnetic moment at 1.73 BM will be shown by one among of the following 45. An excess of AgNO3 is added to 100 mL of a 0.01 M solution of dichlorotetraaquachromium (III) chloride. The number of
Physics
1. If an experiment four quantities a, b, c and d are measured with percentage error 1%, 2%, 3% and 4% respectively.
Quant 2. A stone falls freely under gravity. It covers distances h1, h2 and h3 in the first 5 seconds, the next 5 seconds and th 3. The velocity of a projectile at the initial point A is $$\left( {2\widehat i + 3\widehat j} \right)$$ m/s. It's velocity 4. An explosion breaks a rock into three parts in a horizontal plane. Two of them go off at right angles to each other. Th 5. The upper half of an inclined plane of inclination $$\theta $$ is perfectly smooth while lower half is rough. A block st 6. Three blocks with masses m, 2m and 3m are connected by strings, as shown in the figure. After an upward force F is appli 7. A uniform force of $$\left( {3\widehat i + \widehat j} \right)$$ newton acts on a particle of mass 2 kg. Hence the parti 8. A small object of uniform density rolls up a curved surface with an initial velocity 'v'. It reaches upto a maximum heig 9. A rod PQ of mass M and length L is hinged at end P. The rod is kept horizontal by a massless string tied to point Q as s 10. A body of mass 'm' is taken from the earth's surface to the height equal to twice the radius (R) of the earth. The chang 11. Infinite number of bodies, each of mass 2 kg are situated on x-axis at distance 1 m, 2 m, 4 m, 8 m, . . . , respectively 12. A piece of iron is heated in a flame. It first becomes dull red then becomes reddish yellow and finally turns to white h 13. The molar specific heats of an ideal gas at constant pressure and volume are denoted by Cp and Cv, respectively. If &nbs 14. The following four wires are made of the same material. Which of these will have the largest extension when the same ten 15. The wettability of a surface by a liquid depends primarily on 16. The amount of heat energy required to raise the temperature of 1 g of Helium at NTP, from T1K to T2K is 17. During an adiabatic process, the pressure of a gas is found to be proportional to the cube of its temperature. The ratio 18. In the given (V $$-$$ T) diagram, what is the relation between pressure P1 and P2?
19. A gas is taken through the cycle
A $$ \to $$ B $$ \to $$ C $$ \to $$ A, as shown. what is the net work done by the gas 20. If we study the vibration of a pipe open at both ends. then the following statement is not true. 21. A wave travelling in the + ve x-direction having displacement along y-direction as 1 m, wavelength 2$$\pi $$ m and freq 22. A source of unknown frequency gives 4 beats/s when sounded with a source of known frquency 250 Hz. The second harmonic o 23. Two pith balls carrying equal charges are suspended from a common point by strings of equal length, the equilibrium sepa 24. A, B and C are three points in a uniform electric field. The electric potential is
25. The resistances of the four arms P, Q, R and S in a Wheatstone's bridge are 10 ohm, 30 ohm, 30 ohm and 90 ohm, respectiv 26. The internal resistance of a 2.1 V cell which gives a current of 0.2 A through a resistance of 10 $$\Omega $$ is 27. A wire of resistance 4 $$\Omega $$ is stretched to twice its original length. The resistance of stretched wire would be 28. When a proton is released from rest in a room, it starts with an initial acceleration $$a$$0 towards west. When it is pr 29. A current loop in a magnetic field 30. A bar magnet of length $$'l'$$ and magnetic dipole moment 'M' is bent in the form of an arc as shown in figure. The new 31. A wire loop is rotated in a magnetic field. The frequency of change of direction of the induced e.m.f. is 32. A coil of self-inductance L is connected in series with a bulb B and an AC source. Brightness of the bulb decreases when 33. The condition under which a microwave oven heats up a food item containing water molecules most efficiently is 34. A plano convex lens fits exactly into a plano concave lens. Their plane surfaces are parallel to each other. If lenses a 35. For a normal eye, the cornea of eye provides a converging power of 40 D and the least converging power of the eye lens b 36. In Young's double slit experiment, the slits are 2 mm apart and are illuminated by photons of two wavelengths $${\lambda 37. A parallel beam of fast moving electrons is incident normally on a narrow slit. A fluorescent screen is placed at a larg 38. For photoelectric emission from certain metal the cutoff frequency is $$\upsilon $$. If radiation of frequency 2$$\upsil 39. The wavelength $$\lambda $$e of an electron and $$\lambda $$p of a photon of same energy E are related by 40. Ratio of longest wave lengths corresponding to Lyman and Balmer series in hydrogen spectrum is 41. The half life of a radioactive isotope 'X' is 20 years. It decays to another element 'Y' which is stable. The two elemen 42. A certain mass of Hydrogen is changed to Helium by the process of fusion. The mass defect in fusion reaction is 0.02866 43. In a common emitter (CE) amplifier having a voltage gain G, the transistor used has transconductance 0.03 mho and curren 44. In a n-type semiconductor, which of the following statement is true. 45. The output (X) of the logic circuit shown ion figure will be
1
NEET 2013
MCQ (Single Correct Answer)
+4
-1
Which of the following statements is not true of two genes that show 50% recombination frequency ?
A
The genes are tightly linked
B
The genes show independent assortment
C
If the genes are present on the same chromosome, they undergo more than one crossovers in every
meiosis.
D
The genes may be on different chromosomes
2
NEET 2013
MCQ (Single Correct Answer)
+4
-1
According to Darwin, the organic evolution is due to -
A
Reduced feeding efficiency in one species due to the presence of interfering species
B
Competition within closely related species
C
Intraspecific competition
D
Interspecific competition
3
NEET 2013
MCQ (Single Correct Answer)
+4
-1
The tendency of population to remain in genetic equilibrium may be disturbed by :
A
lack of random mating
B
random mating
C
lack of migration
D
lack of mutations
4
NEET 2013
MCQ (Single Correct Answer)
+4
-1
Variation in gene frequencies within populations can occur by chance rather than by natural selection. This is
referred to as :
A
Genetic drift
B
Genetic load
C
Genetic flow
D
Random mating
Paper analysis
Total Questions
Biology
89
Chemistry
45
Physics
45
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