Biology
1. Which of the following statements is incorrect? 2. Consider following features:
(a) Organ system level of organisation
(b) Bilateral symmetry
(c) True coelomates with segm 3. Select the correctly written scientific name of Mango which was first described by Carolus Linnaeus : 4. From evolutionary point of view, retention of the female gametophyte with developing young embryo on the
parent sporophy 5. Grass leaves curl inward during very dry weather. Select the most appropriate reason from the following : 6. Phloem in gymnosperms lacks : 7. Match the following organisms with their respective characteristics:
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8. Xylem translocates: 9. What is the direction of movement of sugars in phloem? 10. Which of the statements given below is not true about formation of Annual Rings in trees? 11. Select the correct sequence of organs in the alimentary canal of cockroach starting from mouth : 12. Which of the following pair of organelles does not contains DNA? 13. The correct sequence of phases of cell cycle is : 14. Which of the following statements regarding mitochondria is incorrect? 15. Concanavalin A is : 16. Consider the following statements :
(A) Coenzyme of metal ion that is tightly bound to enzyme protein is called prosthet 17. Cells in G0 phase : 18. What is the site of perception of photoperiod necessary for induction of flowering in plants? 19. The ciliated epithelial cells are required to move particles or mucus in a specific direction. In humans, these
cells ar 20. Which of the following statements is not correct? 21. Conversion of glucose to glucose-6 phosphate, the first irreversible reaction of glycolysis, is catalyzed by 22. It takes very long time for pineapple plants to produce flowers. Which combination of hormones can be
applied to artific 23. Identify the cells whose secretion protects the lining of gastro-intestinal tract from various enzymes. 24. Match the Column-I with Column-II :
Select the correct option. 25. Tidal Volume and Expiratory Reserve Volume of an athlete is 500 mL and 1000 mL respectively. What will
be his Expiratory 26. Respiratory Quotient (RQ) value of tripalmitin is : 27. Which of the following factors is responsible for the formation of concentrated urine? 28. Select the correct option : 29. What would be the heart rate of a person if the cardiac output is 5L, blood volume in the ventricles at the end
of diast 30. Match the following structures with their respective location in organs :
.tg {border-collapse:collapse;border-spacing 31. Use of an artificial kindney during hemodialysis may result in :
(a) Nitrogenous waste build-up in the body
(b) Non –eli 32. Which part of the brain is responsible for thermoregulation? 33. Which of the following muscular disorders is inherited? 34. Which of the following statements in correct? 35. Match the following hormones with the respective disease :
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.tg td{bor 36. How does steroid hormone influence the cellular activities? 37. Which one of the following statements regarding post-fertilization development in flowering plants is
incorrect? 38. In some plants, the female gamete develops into embryo without fertilization. This phenomenon is known as : 39. Pinus seed cannot germinate and establish without fungal association. This is because : 40. Placentation, in which ovules develop on the inner wall of the ovary or in peripheral part, is : 41. Persistent nucellus in the seed is known as 42. Extrusion of second polar body from egg nucleus occurs : 43. What is the fate of the male gametes discharged in the synergid? 44. Which of the following contraceptive methods do involve a role of hormone? 45. Select the correct sequence for transport of sperm cells in male reproductive system : 46. Select the horomone-releasing Intra-Uterine Devices. 47. In Antirrhinum (Snapdragon), a red flower was crossed with a white flower and in F1 generation, pink
flowers were obtain 48. The frequency of recombination between gene pairs on the same chromosome as a measure of the distance
between genes was 49. What is the genetic disorder in which an individual has an overall masculine development, gynaecomastia,
and is sterile? 50. What map unit (Centimorgan) is adopted in the construction of genetic maps? 51. A gene locus has two alleles A, a. If the frequency of dominant allele A is 0.4, then what will be the
frequency of homo 52. Select the incorrect statement. 53. Purines found both in DNA and RNA are: 54. Expressed Sequence Tags (ESTs) refers to : 55. Match the following genes of the Lac operon with their respective produces :
.tg {border-collapse:collapse;border-spac 56. The shorter and longer arms of a submetacentric chromosome are referred to as: 57. Which of the following features of genetic code does allow bacteria to produce human insulin by
recombinant DNA technolo 58. Under which of the following conditions will there be no change in the reading frame of following mRNA?
5' AACAGCGGUGCUA 59. The concept of ''Omnis cellula-e cellula'' regarding cell division was first proposed by : 60. Variations caused by mutation, as proposed by Hugo de Vries, are : 61. Match the hominids with their correct brain size :
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.tg td{border-styl 62. Identify the correct pair representing the causative agent of typhoid fever and the confirmatory test for
typhoid. 63. In a species, the weight of newborn ranges from 2 to 5 kg. 97% of the newborn with an average weight
between 3 to 3.3 kg 64. Colostrum, the yellowish fluid, secreted by mother during the initial days of lactation is very essential to
impart immu 65. Which of the following sexually transmitted diseases is not completely curable ? 66. Which of the following immune responses is responsible for rejection of kidney graft? 67. Drug called ‘Heroin’ is synthesized by : 68. Which of the following is true for Golden rice? 69. Select the incorrect statement. 70. What triggers activation of protoxin to active Bt toxin of Bacillus thuringiensis in boll worm? 71. Which of the following statement is incorrect? 72. Select the correct group of biocontrol agents. 73. Match the following organisms with the products they produce :
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.tg td 74. Thiobacillus is a group of bacteria helpful in carrying out : 75. Which of the following can be used as a biocontrol agent in the treatment of plant disease? 76. DNA precipitation out of a mixture of bimolecules can be achieved by treatment with : 77. Which of the following is a commercial blood cholesterol lowering agent? 78. Following statements describe the characteristics of the enzyme Restriction Endonuclease. Identify the
incorrect stateme 79. Which of the following glucose transporters is insulin-dependent? 80. The Earth summit held in Rio de Janeiro in 1992 was called : 81. Match Column-I with Column –II.
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.tg td{border-style:solid;border-widt 82. Which of the following is the most important cause for animals and plants being driven to extinction? 83. Which of the following ecological pyramids is generally inverted? 84. Which one of the following is not a method of in situ conservation of biodiversity? 85. Due to increasing air-borne allergens and pollutants, many people in urban areas are suffering from
respiratory disorder 86. Which of the following protocols did aim for reducing emission of chlorofluorocarbons into the atmosphere? 87. Polyblend, a fine powder of recycled modified plastic, has proved to be a good material for : 88. Which of the following pairs of gases is mainly responsible for green house effect? 89. Which one of the following equipments is essentially required for growing microbes on a large scale, for
industrial prod 90. Which of these following methods is the most suitable for disposal of nuclear waste?
Chemistry
1. The number of moles of hydrogen molecules required to produce 20 moles of ammonia through Haber’s
process is : 2. Which of the following series of transitions in the spectrum of hydrogen atom falls in visible region? 3. 4d, 5p, 5f and 6p orbitals are arranged in the order of decreasing energy. The correct option is : 4. For the second period elements the correct increasing order of first ionization enthalpy is : 5. The number of sigma ($$\sigma $$) and pi ($$\pi $$) bonds in pent-2-en-4-yne is -
6. The manganate and permanganate ions are tetrahedral due to : 7. The correct structure of tribromooctaoxide is : 8. Which of the following diatomic molecular species has only $$\pi $$ bonds according to Molecular Orbital Theory?
9. A gas at 350 K and 15 bar has molar volume 20 percent smaller than that for an ideal gas under the same
conditions. The 10. In which case change in entropy is negative? 11. Under isothermal condition, a gas at 300 K expands from 0.1 L to 0.25 L against a constant external pressure
of 2 bar. T 12. Conjugate base for Bronsted acids H2O and HF are : 13. pH of a saturated solution of Ca(OH)2 is 9. The solubility product (Ksp) of Ca(OH)2 is : 14. Which will make basic buffer? 15. Which of the following is an amphoteric hydroxide? 16. Which of the following reactions are disproportionation reaction?
(a) 2Cu+ $$ \to $$ Cu2+
+ Cu0
(b) 3MnO42+ + 4H+ $$ \t 17. Enzymes that utilize ATP is phosphate transfer require an alkaline earth metal (M) as the cofactor. M is 18. The method used to remove temporary hardness of water is : 19. Which of the following is incorrect statement? 20. Which of the following species is not stable? 21. The compound that is most difficult to protonate is : 22. Among the following, the reaction that proceeds through an electrophilic substitution, is : 23. The most suitable reagent for the following conversion, is :
24. An alkene “A” on reaction with O3 and Zn + H2O gives propanone and ethanal in equimolar ratio. Addition
of HCl to alkene 25. Among the following, the one that is not a green house gas is : 26. Which is the correct thermal stability order for H2E (E = O, S, Se, Te and Po)? 27. A compound is formed by cation C and anion A. The anions form hexagonal close packed (hcp) lattice and
the cations occup 28. For a cell involving one electron $$E_{cell}^\Theta $$ = 0.59 V at 298 K, the equilibrium constant for the cell reaction 29. For an ideal solution, the correct option is : 30. For the cell reaction
2Fe3+(aq) + 2I–
(aq) $$ \to $$ 2Fe2+(aq) + I2(aq)
$${E_{cell}^\Theta }$$ = 0.24 V at 298 K. The st 31. If the rate constant for a first order reaction is k, the time (t) required for the completion of 99 % of the
reaction i 32. For the chemical reaction
N2(g) + 3H2(g) ⇌ 2NH3(g)
the correct option is : 33. Which mixture of the solution will lead to the formation of negatively charged colloidal [AgI] I– sol. ? 34. Which one is malachite from the following? 35. Identify the incorrect statement related to PCl5 from the following : 36. Match the following :
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.tg td{border-style:solid;border-width:0px;font 37. Match the Xenon compounds in Column-I with its structure in Column-II and assign the correct code :
38. The correct order of the basic strength of methyl substituted amines in aqueous solution is : 39. What is the correct electronic configuration of the central atom in K4[Fe(CN)6] based on crystal field theory? 40. The structure of intermediate A in the following reaction, is :
41. The major product of the following reaction is :
42. The non-essential amino acid among the following is : 43. Among the following, the narrow spectrum antibiotic is : 44. The biodegradable polymer is : 45. The mixture that forms maximum boiling
azeotrope is :
Physics
1. The correct Boolean operation represented by the circuit diagram drawn is :
2. A force F = 20 + 10y acts on a particle in y-direction where F is in newton and y in meter. Work done by this force to m 3. A hollow metal sphere of radius R is uniformly charged. The electric field due to the sphere at a distance r from the ce 4. At a point A on the earth’s surface the angle of dip, $$\delta $$ = + 25o. At a point B on the earth's surface the angle 5. Six similar bulbs are connected as shown in the figure with a DC source of emf E, and zero internal resistance.
The ra 6. In which of the following processes, heat is neither absorbed nor released by a system? 7. In a double slit experiment, when light of wavelength 400 nm was used, the angular width of the first minima formed on a 8. A cylinderical conductor of radius R is carrying a constant current. The plot of the magnitude of the magnetic field. B 9. In the circuits shown below, the readings of voltmeters and the ammeters will be :
10. Which colour of the light has the longest wavelength? 11. Increase in tempertaure of a gas filled in a container would lead to : 12. The radius of circle, the period of revolution, initial position and sense of revolution are indicated is the figure.
13. Average velocity of a particle executing SHM in one complete vibration is : 14. A solid cylinder of mass 2 kg and radius 4 cm is rotating about its axis at the rate of 3 rpm. The torque required to st 15. A 800 turn coil of effective area 0.05 m2 is kept. perpendicular to a magnetic filed 5 × 10–5 T. When the plane of the 16. A block of mass 10 kg is in contact against the inner wall of a hollow cylindrical drum of radius 1 m. The coefficient o 17. The speed of a swimmer in still water is 20 m/s. The speed of river water is 10 m/s and is flowing due east. If he is st 18. The displacement of a particle executing simple harmonic motion is given by
y = A0 + A sin$$\omega $$t + B cos$$\omega $ 19. In an experiment, the percentage of error occurred in the measurement of physical quantities A, B, C and D are 1%, 2 %, 20. An electron is accelerated through a potential difference of 10,000 V. Its de Broglie wavelength is (nearly) : (me = 9 21. A mass m is attached to a thin wire and whirled in a vertical circle. The wire is most likely to break when : 22. A copper rod of 88 cm and an aluminium rod of unknown length have their increase in length independent of increase in tm 23. Two particles A and B are moving in uniform circular motion in concentric circles of radii rA and rB with speed vA and v 24. Ionized hydrogen atoms and $$\alpha $$-particles with same momenta enters perpendicular to a constant magnetic field, B. 25. When a block of mass M is suspended by a long wire of length L, the length of the wire becomes (L + $$l$$). The elastic 26. The work done to raise a mass m from the surface of the earth to a height h, which is equal to the radius of the earth, 27. In total internal reflection when the angle of incidence is equal to the critical angle for the pair of media in contact 28. For a p-type semiconductor, which of the following statements is true? 29. Two point charges A and B, having charges +Q and – Q respectively, are placed at certain distance apart and force acting 30. $$\alpha $$-particale consists of : 31. Body A of mass 4m moving with speed u collides with another body B of mass 2 m, at rest. The collision is head on and el 32. A body weight 200 N on the surface of earth. How much will it weight half way down to the centre of the earth? 33. Pick the wrong answer in the context with rainbow. 34. A disc of radius 2 m and mass 100 kg rolls on a horizontal floor. Its centre of mass has speed of 20 cm/s. How much work 35. A small hole of area of cross-section 2 mm2 present near the bottom of a fully filled open tank of height 2 m. Taking g 36. A parallel plate capacitor of capacitance 20 $$\mu $$F is being charged by a voltage source whose potential is changing 37. When an object is shot from the bottom of a long smooth inclined plane kept at an angle 60o with horizontal, it can trav 38. The unit of thermal conductivity is : 39. The total energy of an electron in an atom in an orbit is –3.4 eV. Its kinetic and potential energies are, respectively. 40. Which of the following acts as a circuit protection device? 41. A soap bubble, having radius of 1 mm, is blown from a detergent solution having a surface tension of 2.5 $$ \times $$ 10 42. Two similar thin equi-convex lenses, of focal length f each, are kept coaxially in contact with each other such that the 43. In which of the following devices, the eddy current effect is not used? 44. Two parallel infinite line charges with linear charge densities +$$\lambda $$ C/m and -$$\lambda $$ C/m are placed at a 45. A particle moving with velocity
$$\overrightarrow V $$ is acted by three forces shown by the vector triangle PQR. The v
1
NEET 2019
MCQ (Single Correct Answer)
+4
-1
The work done to raise a mass m from the surface of the earth to a height h, which is equal to the radius of the earth, is :
A
mgR
B
2mgR
C
$${1 \over 2}$$mgR
D
$${3 \over 2}$$mgR
2
NEET 2019
MCQ (Single Correct Answer)
+4
-1
In total internal reflection when the angle of incidence is equal to the critical angle for the pair of media in contact, what will be angle of refraction?
A
equal to angle of incidence
B
90o
C
180o
D
0o
3
NEET 2019
MCQ (Single Correct Answer)
+4
-1
For a p-type semiconductor, which of the following statements is true?
A
Holes are the majority carriers and trivalent atoms are the dopants.
B
Holes are the majority carriers and pentavalent atoms are the dopants.
C
Electrons are the majority carriers and pentavalent atoms are the dopants
D
Electrons are the majority carriers and trivalent atoms are the dopants.
4
NEET 2019
MCQ (Single Correct Answer)
+4
-1
Two point charges A and B, having charges +Q and – Q respectively, are placed at certain distance apart and force acting between them is F. If 25% charge of A is transferred to B, then force between the charges becomes :
A
F
B
$${{16F} \over 9}$$
C
$${{9F} \over {16}}$$
D
$${{4F} \over 3}$$
Paper analysis
Total Questions
Biology
90
Chemistry
45
Physics
45
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