Wave Optics, Electromagneticwave, Dual Nature and

Photoelectric effect, Ray Opticaand Optical Instruments

Ionic EquilibriumNitrogen Containing

Compound, Halogen Familyand Inert Gas

Plant Growthand Development,Breathing & Gaseous

Transport, Body Fluid andCirculation

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TEST-1 SAMPLE PAPER for NEET(UG)-20201. The magnetic field of a beam emerging from a

filter facing a flood light is given by

B = 12 × 10–8 sin (1. 20 × 107 z – 3.60 × 1015 t) T.What is the average intensity of the beam ?

(a) 1.7 W/m2 (b) 2.3 W/m2ac

(c) 2.7 W/m2 (d) 3.2 W/m2

2. The ratio of contributions made by the electricfield and magnetic field components to theintensity of an

(a) c : 1 (b) c2 : 1

(c) 1 : 1 (d) c :1

3. Assume that all the energy from a 1000 W lampis radiated uniformly, then the amplitude ofelectric field of radiation at a distance of 2 mfrom the lamp is

(a) 245 .01 V/m (b) 17 V/m

(c) 0 (d) 2.96 V/m

4. A ray of light is incident on the surface ofseparation of a medium at an angle 45º and isrefracted in the medium at an angle 30º. Whatwill be the speed of light in the medium?

(a) 1.96 × 108 ms–1

(b) 2.12 × 108 ms–1

(c) 3. 18 × 108 ms–1

(d) 3.33 × 108 ms–1

5. A fish looking up through the water sees theoutside world, contained in a circular horizon. If

the refractive index of water is 43

and the fish is

12 cm below the water surface, the radius ofthis circle in cm, is

(a) 36 7 (b)367

(c) 36 5 (d) 4 5

6. Light is incident from a medium into air at two

possible angles of incidence (a) 20º and (b) 40º.In the medium, light travels 3.0 cm in 0.2 ns.the ray will

(a) suffer total internal reflection in both cases(a) and (b)

(b) suffer total internal reflection in case (b) only

(c) have partial reflection and partialtransmission in case (b)

(d) have 100% transmission in case (a)

7. The image of an illuminated square is obtainedon a screen with the help of a converging lens.The distance of the square from the lens is 40cm. The area of the image is 9 times that square.The focal length of the lens is

(a) 36 cm (b) 27 cm

(c) 60 cm (d) 30 cm

8. A double convex lens made of glass (refractiveindex n = 1.5) has the radii of curvature of boththe surfaces as 20 cm. Incident light rays parallelto the axis of the lens will converge at a distanceL such that

(a) L = 20 cm (b) L = 10 cm

(c) L = 40 40 cm (d)

9. When monochromatic red light is used insteadof blue light in a convex lens, its focal length will

(a) not depend on colour of light

(b) increase

(c) decrease

(d) remain same

10. To make an achromatic combination, a convexlens of focal length 42 cm having dispersive powerof 0.14 is placed in contact with a concave lensof dispersive power 0.21. The focal length of theconcave lens should be

(a) 63 cm (b) 21 cm

(c) 42 cm (d) 14 cm

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TEST-1 SAMPLE PAPER for NEET(UG)-202011. A convex lens is in contact with a concave lens.

The magnitude of the ratio of their focal length

is 32 . Their equivalent focal length is 30 cm. What

are their individual focal lengths

(a) –75, 50 (b) –10, 15

(c) 75, 50 (d) –15,10

12. An equiconvex lens is cut into two halves along(i) XOX' and (ii) along YOY' as shown in figure.Let f, f' and f" be the focal lengths of the completelens, of each half in case (i), and of each half incase (ii) respectively. Choose the correctstatement from the following

(a) f' = 2f, f" = f (b) f' = f, f" = f

(c) f' = 2f, f" = 2f (d) f' = f, f" = 2f

13. A small coin is resting on the bottom of a beakerfilled with a liquid. A ray of light from the cointravels upto the surface of the liquid and movesalong its surface (see figure).

How fast is the light travelling in the liquid

(a) 1.8 × 108 ms–1

(b) 2.5 × 108 ms–1

(c) 3.0 × 108 ms–1

(d) a1.2 × 108 cm–1

14. The reflective surface is given by y = 2 sin x andit is facing positive axis. What is the least valueof coordinate of the point where a ray parallel topositive X-axis becomes parallel to positive y -axis after reflection

(a) (b)

(c) (d)

15. A light ray is incident perpendicular to one faceof a 90º prism and is totally internally reflectedat the glass-air interface. If the angle of reflectionis 45º, we conclude that for the refractive indexn as

(a) n (b)

(c) n (d)

16. Diameter of a plano-convex lens is 6 cm andthickness at the centre is 3 mm. If speed of lightin material of lens is 2 × 108 m/s, the focal lengthof lens

(a) 15 cm (b) 20 cm

(c) 30 cm (d) 10 cm

17. A plano-convex lens of refractive index 1.5 and

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TEST-1 SAMPLE PAPER for NEET(UG)-2020radius of curvature 30 cm is silvered at thecurved surface. Now, this lens has been used toform the image of an object. At what distancefrom this lens, an object be placed in order tohave a real image of the size of the object ?

(a) 20 cm (b) 30 cm

(c) 60 cm (d) 80 cm

18. A thin convex lens made from crown glass

has focal length f. When it is measured

in two different liquid having refractive indices

4 5and

5 3, if has focal lengths f1 and f2,

respectively. The correct relation between focallength is

(a) f2 > f and f1 becomes one

(b) f1 and f2 both becomes one

(c) f1 = f2 < f

(d) f1 > f and f2 becomes one

19. A light ray falls on a square glass salb as shownin the diagram. The index of refraction of theglass, if total internal reflection is to occur atthe vertical face, is equal to

(a)2

(b)52

(c)32 (d)

32

20. A car is fitted with a convex side-view mirror offocal length 20 cm. A second car 2.8 m behindthe first car is overtaking the first car at a relativespeed of 15 m/s. The speed of the image of thesecond car as seen in the

(a)1 m/s

15(b) 10 m/s

(c) 15 m/s (d)1

m/s10

21. A diverging lens with magnitude of focal length25 cm is placed at a distance of 15 cm from aconverging lens of magnitude of focal length 20cm. A beam of parallel light falls on the diverginglens. The final image formed is

(a) virtual and at a distance of 40 cm fromconvergent lens

(b) real and at a distance of 40 cm from thedivergent lens

(c) real and at a distance of 6 cm from theconvergent lens

(d) real and at a distance of 40 cm fromconvergent lens

22. An object 2.4 m infront of a lens forms a sharpimage n a film 12 cm behind the lens. A glassplate 1 cm thick, of refractive index 1.50 isinterposed between lens and film with its planefaces parallel to film. At what distance (from lens)should object shifted to be in sharp focus on film ?

(a) 7.2 m (b) 2.4 m

(c) 3.2 m (d) 5.6 m

23. Two plane mirror A and B are aligned parallel toeach other, as shown in the figure. A light ray isincident at an angle 30º at a point just insideone end of A. The plane of incidence coincideswith the plane of the figure. The maximumnumber of times the ray undergoes reflection(including the first one) before it emerges out is

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TEST-1 SAMPLE PAPER for NEET(UG)-2020

(a) 28 (b) 30

(c) 32 (d) 34

24. A simple telescope, consisting of an objective offocal length 60 cm and a single eye lens of focallength 5 cm is focused on a distant object insuch a way that parallel rays emerge from theeye lens. If the object subtends an angle of 2º atthe objective, the angular width of the image is

(a) 10º (b) 24º

(c) 50º (d) (1/6)º

25. The magnifying power of an astronomicaltelescope is 8 and the distance between the twolenses is 54 cm. The focal length of eye lens andobjective lens will be

(a) 6 cm and 48 cm (b) 48 cm and 6 cm

(c) 8 cm and 64 cm (d) 6 cm and 60 cm

26. In a refracting astronomical telescope, the finalimage is

(a) real, inverted and magnified

(b) real, erect and magnified

(c) virtual, erect and magnified

(d) virtual, inverted and magnified

27. An observer looks at a distance tree of height 10m with a telescope of magnifying power of 20. Tothe observer the tree appears

(a) 10 times taller (b) 10 times nearer

(c) 20 times taller (d) 20 times nearer

28. For compound microscope f0 = 1 cm, fe = 2.5 cm.An object is placed at distance 1.2 cm fromobjective lens. What should be the length ofmicroscope for normal adjustment ?

(a) 8.5 cm (b) 8.3 cm

(c) 6.5 cm (d) 6.3 cm

29. In a Young's double slit experiment, two coherentsources are placed 0.90 mm apart and the fringesare observed one metre away. If it produces thesecond dark fringe at a distance of 1 mm fromthe central fringe, the wavelength ofmonochromatic light used will be

(a) 60 × 10–4 cm (b) 10 × 10–4 cm

(c) 10 × 10–5 cm (d) 6 ×10–5 cm

30. In Young's double slit experiment, the intensity

at a point where the path difference is 6

being

the wavelength of the light used) is I. If I0 denotesthe maximum intensity, I/I0 is equal to

(a)12 (b)

32

(c)12 (d)

34

31. In Young's double slit experiment, the intensityat a point is 1/4 of the maximum intensity.Angular position of this point is

(a) sin (b) sin

(c) sin (d) sin

32. The first diffraction minimum due to single slitdiffraction is for a light of wavelength 5000 Å.If the width of slit is 1 × 10–4 cm. Then, the valueof is

(a) 30º (b) 45º

(c) 60º (d) 15º

33. When an unpolarised light of intensity I0 isincidence on a polarising sheet, the intensity of

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TEST-1 SAMPLE PAPER for NEET(UG)-2020the light which does not get transmitted is

(a) 01

I2 (b) 0

1I

4

(c) zero (d) I0

34. A ray of light is incident on the surface of a glassplate of refractive index 1.732 at the polarisingangle. The angle of refraction of the ray is

(a) 45º (b) 60º

(c) 15º (d) 30º

35. A beam of unpolarised light of intensity I0 ispassed through a polaroid A and then throughanother polaroid B which is oriented, so that itsprincipal plane makes an angle of 45º relative tothat of A. The intensity of the emergent light is

(a) I0 (b) I0/2

(c) I0/4 (d) I0/8

36. An electron of mass m and charge e are initiallyat rest. It gets accelerated by a constant electricfield E. The rate of change of de-Brogliewavelength of this electron a time t is

(a) 2eEt(b) 2eEt

(c) eE (d) E

37. When a surface 1 cm thick is illuminated withlight of wavelength , the stopping potential isV0, but when the same surface is illuminated bylight of wavelength 3 , the stopping potential isV0/6, the threshold wavelength for metallicsurface is

(a) 4 (b) 5

(c) 3 (d) 2

38. Consider a metal exposed to light of wavelength600 nm. The maximum energy of the electrondoubles when light of wavelength 400 nm is used.

Find the work function in eV.

(a) 2.83 eV (b) 2 eV

(c) 1.02 eV (d) 3.42 eV

39. A metall ic surface is illuminated withmonochromatic light of wavelength , thestopping potential for photoelectric current is 3V0and when the same surface is illuminated withlight of wavelength the stopping potential isV0. The threshold wavelength of this surface forphotoelectric effect is

(a) (b) 6

(c) 8 (d) 4

40. A particle A of mass m and initial velocity v

collides with a particle B of mass m2 which is at

rest. The collision is head on, and elastic. The

ratio of the de-Broglie wavelength to afterthe collision is

(a) (b)

(c) (d)

41. Radiation of wavelength is incident on aphotocell. The fastest emitted electron has speed

v. If the wavelength is changed to , thespeed of the fastest emitted electron will be

(a) (b)

(c) (d)

42. The surface if a metal is illuminated with thelight of 400 nm. The kinetic energy of the ejected

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TEST-1 SAMPLE PAPER for NEET(UG)-2020photoelectrons was found to be 1.68 eV. The workfunction of the metal is (hc = 1240 ev-nm)

(a) 3.09 eV (b) 1.42 eV

(c) 151 eV (d) 1.68 eV

43. de-Broglie wavelength of an electron acceleratedby a voltage of 50V is close to (e = 1.6 × 10–19 C,me = 91. × 10–31 kg, h = 6.6 × 10–34 J-s).

(a) 0.5 Å (b) 1.7 Å

(c) 2.4 Å (d) 1.2 Å

44. Photons of an electromagnetic radiation has anenergy 11keV each. To which region ofelectromagnetic spectrum does it belong ?

(a) X-ray region (b) Ultraviolet region

(c) Infrared region (d) Visible region

45. The voltage applied to an electron microscope toproduce electrons of wavelength 0.50 Å is

(a) 602 V (b) 50 V

(c) 138 V (d) 812 V

46. The given reaction is :

6 5 2 6 5

O

C H – C – O – CH C H

(a) Claisen reaction

(b) Tischenko reaction

(c) Perkin reaction

(d) Cannizzaro reaction

47. In the given reaction,

3

O O

[X] will be:

(a) CH2N2 (b) CH3OH

(c) CH3COOH (d) Both (a) and (b)

48. Which of the following reactions is an exampleof alcoholysis?

(a)

(b)

O

(c) 6 5 3C H COOCH

(d) C6H5COOH +C2H5OH

49. Which of the following compounds gives -

halogenation reaction ?

(a) C6H5 – CH2COOH

(b) C6H5 – CH2 – COOCH3

(c) HCOOCH2 – CH3

(d) Both of (a) and (b)

50. Claisen condensation takes place between:

(a) Two molecules of esters having no -hydrogen atom

(b) Two molecules of esters having -hydrogenatom

(c) Two molecules of ketones

(d) One molecule of ester having -hydrogenand one molecule of ketone having no -hydrogen

51. In the given reaction

[X]

will be

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TEST-1 SAMPLE PAPER for NEET(UG)-2020

(a)

(b)

(c)

(d)

52. Number of cross products in the given reactionwill be :

(a) One (b) Three

(c) Two (d) Four

53. Hofmann rearrangement is given by :

(a) Amide (b) Acid chloride

(c) Acid anhydride (d) All of these

54. In the given reaction

[X] will be :

(a) C6H5 – CH2OH

(b) C6H5COOH

(c) C6H5CONH2

(d)

55. Which of the following compounds givescarboxylic acid with HNO2 ?

(a)6 5

O

C H – C – Cl

(b) C6H5CONH2

(c) 3 3

O O

CH – C – O – C – CH

(d) CH3COOC2H5

56. Which of the following statements is correct for

3CH – CH – COOH|Br

(a) It will give nucleophilic substitution due tobromo group

(b) It will give nucleophilic addition followed byelimination due to – COOH group

(c) Gives elimination reaction due to bromogroup.

(d) All of these

57. In the reaction sequence :

product will be :

(a)

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TEST-1 SAMPLE PAPER for NEET(UG)-2020

(b)

(c)

(d)

58. In the given reaction,

product[X] will be :

(a) - Amino acid (b) -Aminoamide

(c) -Amino acid (d) - Aminoamide

59. In the given reaction,

[X] will be :

(a) a

(b) a

(c)

(d)CH3 – CH = CH – COOH

60. Which of the following reactions will give -hydroxy acid as a product ?

(a)

(b)

(c)

(d) All of these

61. Which of the following statements is false?

(a) The halogen that is most readily reduced isiodine

(b) Highest electron affinity in a period standsfor halogens

(c) The electron affinity of halogens shows theorder Cl > F > Br > I

(d) The bond energy of halogen molecules showsthe order Cl – Cl > Br – Br > F – F > I – I

62. At ordinary temperature and pressure, amonghalogens chlorine is a gas, bromine is a liquidand iodine is a solid. This is because

(a) Their specific heats are n the order Cl2 > Br2> I2

(b) Intermolecular forces among molecules ofchlorine are the weakest and those of iodinethe strongest

(c) The order of density is I2 > Br2 > Cl2(d) The order of stability is I2 > Br2 > Cl2

63. Bromine is added to cold dilute aqueous solutionof NaOH. The mixture is boiled. Which of thefollowing statement is not true ?

(a) During the reaction, bromine is present infour different oxidation states

(b) The greatest difference between the variousoxidation states of bromine is 5

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TEST-1 SAMPLE PAPER for NEET(UG)-2020(c) On acidification of the final mixture bromine

is formed

(d) Disproportionation of bromine occurs duringthe reaction

64. When chlorine in excess is treated with ammonia,the product formed is used as

(a) an antipyretic (b) an explosive

(c) an analgesic (d) a laboratory reagent

65. In IF5 iodine

(a) is in sp3d hybridization having trigonalbipyramidal shape

(b) is in sp3d2 hybridization having squarepyramid shape

(c) all FIF bonds are equal with 90º

(d) is in sp3d3 hybridization having distrotedoctahedral shape

66. Interhalogen compounds are more reactive thanhalogens (except fluorine) because

(a) interhalogen compounds contain twohalogens

(b) X–Y bond in interhalogen compounds inweaker than X–X bond in halogens

(c) interhalogen compounds are soluble in water

(d) interhalogen compounds has vital force

67. Which of the following is correct order of acidicstrength ?

(a) HOCl > HOBr > HOI

(b) HOBr > HOCl > HOI

(c) HOI > HOBr > HOCl

(d) HOBr > HOI > HOCl

68. Which of the following pairs of halogens haveapproximately identical bond energy ?

(a) F2 and Cl2 (b) Cl1 and Br2

(c) F2 and Br2 (d) F2 and I

69. Statement I : Bromine decolourized when addedto hot caustic soda solution

Statement II : Bromine undergoes disproporti-onation on reacting with hot caustic sodasolution

(a) Statement I and Statement II are true andStatement I is correct explanation ofStatement I

(b) Statement I and Statement II are true andStatement II is not correct explanation ofStatement I

(c) Statement I is true but Statement II is false

(d) Statement I is false but Statement II is true

70. SbF5 reacts with XeF4 to form adduct. The shapeof cation and anion in the adduct are respective

(a) square planar

(b) T-shaped, octahedral

(c) square pyramidal, octahedral

(d) square planar, octahedral

71. Which of the following statements about noblegases is false ?

(a) They are used to provide inert atmosphere inmany chemical reactions

(b) They are only sparingly soluble in water

(c) They form diatomic molecules

(d) Some of them are used to fill discharge tubesused for advertising signals.

72. XeO3F2 contains

(a) 3 bonds and the remaining 5 electron pairsform a trigonal bipyramid

(b) 2 bonds and remaining 6 electron pairs forman octahedron

(c) 4 bonds and remaining 4 electron pairsform tetrahedron

(d) 5 electron pairs and 5 lone pairs

73. When XeF4 hydrolyses in water, the productsformed are

(a) XeO3, Xe, F2 (b) XeO4, HF, Xe

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TEST-1 SAMPLE PAPER for NEET(UG)-2020(c) XeO3, Xe, HF (d) XeO3, HF, F2, Xe

74. Noble gases are sparingly soluble in water dueto

(a) dipole-dipole interaction

(b) dipole-induced dipole interaction

(c) induced dipole-induced dipole interaction

(d) hydrogen bonding

75. The reaction for the formation of compounds byxenon with fluorine and oxygen is

(a) Ionization potential of Xe is low among inertgases

(b) F2 and O2 are most electronegative elements

(c) Xe has vacant d-orbitals into which its p-electrons can be excited

(d) All of the above

76. Kb for trimethyl amine is 6.50 × 10–5. The valueof Ka for trimethyl ammonium ion is :

(a) 1.04 × 1010 (b) 1.54 × 1010

(c) 1.54 × 10–10 (d) 1.04 × 10–10

77. pH of 10–8 M solution of HCl is :

(a) 8 (b) 7.04

(c) 6.04 (d) 6.96

78. pH of a solution prepared by adding 25 mL of0.10 M NaOH solution to 15 mL of 0.40 MCH3COOH. (pKa for CH3COOH is 4.74) is :

(a) 3.59 (b) 4.59

(c) 5.59 (d) 6.59

79. 50 mL of 0.1 M NaOH solution is added to 150mL of 0.05 M NH4Cl to prepare a basic buffer. If

pka of 4NH is 9.26, pH of resulting buffer solutionis :

(a) 0.956 (b) 9.56

(c) 4.78 (d) 11.56

80. When 2 × 10–2 mole of sodium acetate is addedto 2 litres of 0.01 M CH3COOH solution, pHchange is which of the following if pKa for

CH3COOH is 4.74 ?

(a) 0.37 (b) 0.74

(c) 1.00 (d) 1.37

81. Ksp of Ag2CrO4 is 1.1 × 10–12. What is the ratio ofits solubility in 1M AgNO3 and 1M K2CrO4 ?

(a) 20.99 × 10–7 : 1 (b) 2.099 × 10–7 : 1

(c) 20.99 × 10–5 : 1 (d) 2.099 × 10–5 : 1

82. Arrange the formula for solubility of Hg2Cl2,Ca3(PO4)2, Ag2CrO4 and Cr2(SO4)3 sparinglysoluble salts :

(a) sp sp sp35 5sp

K K KK , , ,

108 4 108

(b) sp sp sp sp3 3 5 5K K K K

, , ,4 4 108 27

(c) sp sp sp sp3 35 5K K K K

, , ,4 108 4 108

(d) sp sp sp3 5 5sp

K K KK , , ,

4 4 108

83. Ksp of Al(OH)3 is 1.0 × 10–15 M. At what pH does1.0 × 10–6 M Al3+ starts precipitating on theaddition of buffer of NH4Cl and NH4OH solution ?

(a) 9 (b) 10

(c) 11 (d) 12

84. A 50 mL sample is removed form water solutionsaturated with CaSO4 at 298K. 0.12 gm CaSO4was obtained on complete evaporation of waterfrom this sample. The value of Ksp of CaSO4 is :

(a) 3.114 × 10–3 (b) 3.114 × 10–4

(c) 3.114 × 10–5 (d) 3.114 × 10–6

85. Pka of CH3COOH is 4.74. The pH of 0.01 Msodium acetate solution is :

(a) 6.27 (b) 7.37

(c) 8.27 (d) 8.37

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TEST-1 SAMPLE PAPER for NEET(UG)-202086. Pkb of NH3 is 4.74. When 100 mL 0.01 M NH3

solution is 50% neutralized by 0.01 M HCl thenpH of resulting solution is :

(a) 7.26 (b) 7.56

(c) 8.26 (d) 9.26

87. pH of a solution obtained on mixing 1 mole of aweak acid HA with 1 mole of another weak acidHB in 1 litre (if their dissociation constants are1 × 10–6) is:

(a) 0.85 (b) 1.85

(c) 2.85 (d) 3.85

88. pH of 0.1 M solution of following electrolytesincreases in order of :

(a) NaCl < NH4Cl < NaCN < HCl

(b) HCl < NH4Cl < NaCl < NaCN

(c) NaCN < NH4Cl < NaCl < HCl

(d) HCl < NaCl < NaCN < NH4Cl

89. Dissociation constant of NH4OH is 1.8 × 10–5.The concentration of OH– ions in 0.1 M NH4OHsolution is :

(a) 1.8 × 10–6 M (b) 1.34 × 10–6 M

(c) 1.34 × 10–3 M (d) 3.6 × 10–6 M

90. HCOOH and CH3COOH solutions have equal pH.If K1/K2 = 4 then their molar concentration ratiowll be :

(a) 0.25 (b) 4

(c) 0.5 (d) 2

91. Which of the following causes delaying ofsenescence

(a) Cytokinins (b) Auxins

(c) Gibberellins (d) Ascorbic acid

92. The word "cytokinin" which induces cell divisionwas given by

(a) Yabuta (b) Brown

(c) Letham (d) Fitting

93. Pineapple can be made to flower in off season

by

(a) Ethylene/NAA (b) Zeatin

(c) Short day (d) Temperature

94. Ethylene gas

(a) Is a saturated hydrocarbon

(b) Slows down the ripening of apples

(c) Retards ripening of tomatoes

(d) Speeds up maturation of fruits and earlyripening of some fruits

95. Ethylene is a

(a) Gaseous hormone

(b) Gaseous enzyme

(c) Liquid-gas mixture

(d) Solid hormone

96. Abscisic acid controls

(a) Shoot elongation

(b) Cell elongation and cell wall formation

(c) Cell division

(d) Leaf fall and dormancy

97. The following is a naturally occuring growthinhibitors

(a) IAA (b) ABA

(c) NAA (d) GA

98. Presence of which of the following in seed isassociated with dormancy

(a) Starch (b) Abscisic acid

(c) Ethylene (d) Gibberellic acid

99. Abscisic acid treatment results in

(a) Leaf expansion (b) Stem elongation

(c) Stomatal closure (d) Root elongation

100.Which of the following factors influence theprocess of flowering

(a) Acidity of soil

(b) Water in the soil

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TEST-1 SAMPLE PAPER for NEET(UG)-2020(c) Amount of green pigment

(d) Photoperiod

101.Etiolation in plants is caused when they

(a) Are grown in dark

(b) Have mineral deficiency

(c) Are grown in intense light

(d) Are grown in blue light

102.The process of growth is determined by

(a) Increase in size

(b) Increase in size and dry weight

(c) Increase weight only

(d) Increase in dry weight

103.In lag phase, growth is

(a) Slowest (b) Fastest

(c) Intermediate (d) No growth at all

104.Grand period of growth is called

(a) Early period

(b) Middle period

(c) Total growth period

(d) Decreasing growth rate

105.The effect of oxygen supply on growth is

(a) Positive

(b) Negative

(c) In some plants it is positive while inothers it is negative

(d) None of the above

106.When food supply is poor, the rate of growth is

(a) Fast (b) Slow

(c) Intermediate (d) Nil

107.By arc auxanometer, we measure the growth in

(a) Elongation (b) Thickness

(c) Both (a) and (b) (d) None of the above

108.The instrument by which the rate of growth ofstem is accurately measured is

(a) Hydrometer (b) Auxanometer

(c) Osmometer (d) Potometer

109.Which one of the following is the motivative forcefor growth

(a) Turgor pressure

(b) Root pressure

(c) Atmospheric pressure

(d) Osmotic pressure

110.Most important division for the growth of a plantis

(a) Mitosis (b) Meiosis

(c) Amitosis and fission

(d) All the above

111.Dendrochronology is

(a) Secondary growth

(b) Apical growth

(c) Seasonal variation

(d) Determination of age of tree

112.Phytotron is a device by which

(a) Electrons are bombarded

(b) Protons are liberated

(c) Plants are grown in controlled environment

(d) Mutations are produced in plants

113.The natural plant hormones were first isolatedfrom

(a) Corn germ oil and human urine

(b) Cotton fruits, spinach leaves and rice plants

(c) Avena coleoptile spinach leaves and thefungus gibberella

(d) Human urine and rice seedlings

114.Grass coleoptile tip bend towards source of lightbecause

(a) It likes the sun

(b) It is heavy

(c) It needs darkness

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TEST-1 SAMPLE PAPER for NEET(UG)-2020(d) Due to some secretion from tip

115.In which of the following respect, the planthormones differ from enzymes

(a) Required in less quantity

(b) They are expanded in the process

(c) They release some energy

(d) None of the above

116.Phytohormones are used in

(a) Parthenacarpy (b) Grafting

(c) Ripening of fruits (d) All the above

117.'Climacteric' is

(a) A phenomenon related to fruit ripening

(b) The condition of a plant when all of its fruitsare almost ripe

(c) The condition of a plant when most of itsleaves have turned yellow

(d) None of the above

118.Which of the following substances act as a keygrowth regulator

(a) ATP and food (b) Hormones

(c) Enzymes

(d) Auxin and vitamins

119.Plant hormones are usually

(a) Proteins (b) Lipids

(c) Carbohydrates

(d) Aromatic compounds

120.Leaf fall occurs on abscission layer is formedwhen the content of

(a) Auxin increases

(b) Auxin decreases

(c) Abscisic acid decreases

(d) Gibberellic acid decreases

121.Auxins were discovered by

(a) Thimman (b) Went

(c) Butler (d) Skoog

122.Apical dominance in higher plants is due to

(a) Balance between auxin and cytokinin

(b) Enzyme activity and metabolism

(c) Carbohydrates

(d) Photoperiodism

123.Cell elongation in plants is caused by

(a) Auxin (b) Gibberellin

(c) Florigen (d) Traumatin

124.Indole-3-acetic acid called as auxin was firstisolated from

(a) Human urine (b) Corn germ oil

(c) Fusarium (d) Rhizopus

125.Parthenocarpy is induced by

(a) ABA (b) Auxins

(c) Zeatin (d) Cytokinin

126.High concentration of synthetic auxins would

(a) Kill plants

(b) Prevent lateral buds to grow

(c) Control cell division

(d) Cause photoperiodism

127.Which of the following is not naturally occurringplant hormone

(a) 2, 4-D (b) GA2

(c) Gibberellin (d) IAA

128.Gibberellin was first extracted from

(a) Gibberella fujikuroi

(b) Algae

(c) Bacteria

(d) Roots of higher plants

129. Specific property attributed to gibberellins is

(a) Shortening of genetically tall plants

(b) Elongation of genetically dwarf plant

(c) Promotion of rooting

(d) Yellowing of young leaves

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TEST-1 SAMPLE PAPER for NEET(UG)-2020130.Gibberellic acid has been successfully used to

induce flowering

(a) In short day plants under long dayconditions

(b) In long day plants under short day conditions

(c) For some plants

(d) None of the above

131.Cell elongation in internodal region takes placedue to

(a) Gibberellins (b) Ethylene

(c) Cytokinins (d) Indole acetic acid

132.Which of the following plant hormonesubstitutes for long photoperiods in floweringplants

(a) Auxins (b) Gibberellins

(c) Cytokinins (d) Ethylene

133.Gibberellic acid induces flower

(a) In some gymnospermic plants only

(b) In long day plants under short day conditions

(c) In short day plants under long dayconditions

(d) In day neutral plants under dark conditions

134.Cytokinin is a hormone whose main function is

(a) Induction of cell division and delay insenescence

(b) To take part in cell division

(c) Refers to cell movements

(d) To cause dormancy

135.Which hormone is concerned chiefly with celldivision in plants

(a) IAA (b) Kinin

(c) GA2 (d) 2, 4-D

136.Alary muscle is associated with

(a) heart and circulation

(b) Malpighian tubules and excretion

(c) trachea and respiration

(d) none of the above

137.Primary blood cells are formed in

(a) plasma (b) bone marrow

(c) liver (d) spleen

138.During blood clotting which of the following isused

(a) Co (b) Ca2+

(c) Na+ (d) Cl–

139.If interferon is being produced in the body of asick person, the person is most likely to besuffering from

(a) typhoid (b) malaria

(c) measles (d) tetanus

140.Which of the following organs is not involved inthe elecitation of immune reponse ?

(a) brain (b) lymph nodes

(c) spleen (d) thymus

141.The most common type of haemophilia resltsfrom the congenital absence of

(a) factor II (b) factor V

(c) factor VII (d) factor XI

142.Blood vascular system of earthworm is

(a) open type with Hb in RBC

(b) open type with HB in plasma

(c) closed type with Hb in RBC

(d) Closed type with Hb in plasma.

143.Match the columns and find correctcombination

(A) Earthworm (i) Pulmonary

(B) Human (ii) Bronchial

(C) Prawn (iii) Tracheal

(D) Insects (iv) Cutaneous

(a) A-(i), B-(ii), C-(iii), D-(iv)(b)A-(iv), B-(i), C-(ii), D-(iii)

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TEST-1 SAMPLE PAPER for NEET(UG)-2020(c) A-(iii), B-(ii), C-(iv), D-(i)(d)A-(iv), B-(ii), C-(i), D-(iii)

144.The right lung of rabbit has four lobes. Theyare

(a) Anterior lobe, anterior azygous, posterior lobeand right anterior

(b)Posterior lobe, posterior and anteriorazygous, right anterior and right posterior

(c) Anterior azygous, right anterior, rightposterior and posterior azygous lobe

(d)Anterior lobe, anterior azygous, right anteriorand posterior azygous lobe

145.Carbon monoxide is a pollutant because

(a) it reacts with O2

(b) it inhibits glycolysis

(c) reacts with haemoglobin

(d) makes nervous system inactive.

146.Which type of respiration appeared first in theprimitive organism and why

(a) Aerobic respiration as it releases more energy

(b) Anaerobic respiration as there was no O2

(c) Anaerobic respiration because smallorganism can only do it

(d) Aerobic respiration as no harmful wasteproducts are formed

147.In which of the following chlorocruorin pigmentis found ?

(a) Annelida (b) Echinodermata

(c) Insects (d) Lower chordates.

148.Monoclonal antibodies

(a) are obtained from a group of cells and acton more than one antigen

(b) are obtained from a group of same type ofcells and act on single antigen.

(c) are obtained from a group of same type ofcells and act on single antigen.

(d) are obtained from a group of same type ofcells and act on more than one antigen

149.You are required to draw blooc from a patientand to keep it in a test tube for analysis of bloodcorpuscles and plasma. You are also providedwith the following 4 types of test tubes. Whichof the m will you NOT see for the purpose ?

(a) test tube containing CaHCO3

(b) Chilled test tube

(c) test tube containing heparin

(d) test tube containing sodium oxalate.

150.Glucose 6-phosphate dehydrogenese deficiencyis associated with haemolysis of

(a) lymphocytes (b) RBC

(c) Platelets (d) leucocytes

151.If a rabbit stops after running 100 metres, thenwhat will be the effect on its body

(a) Gets fatigued due to deposition of pyruvicacid in muscles

(b)Gets fatigued due to deposition of lactic acidin skeletal muscle

(c) Breathing rate increases as lactic acid getsdeposited in muscles

(d)Remains unaffected

152.Formation of non-functional methemo-globincauses “Blue-baby syndrome”. This is due to

(a) excess of aresenic concentration in drinkingwater.

(b) excess of nitrates in drinking water.

(c) deficiency of iron in food

(d) increased methane content in theatmosphere.

153.Which one of these statements is correct

(a) All animals require a medium for cellularrespiration

(b) In all animals oxygen is transported by blood

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TEST-1 SAMPLE PAPER for NEET(UG)-2020(c) All animals take oxygen from water or air

through gills and lungs

(d)All animals need oxygen for respiration

154.Difference between trachea and fallopian tubeis

(a) Trachea is related with respiration where asfallopian tube is related with reproduction

(b) Trachea is related with respiration andfallopian tube with excretion

(c) Trachea is related with reproduction andfallopian tube with excretion

(d) Trachea is related with reproduction andfallopian tube with respiration

155.Match the columns

Column I Column II(A) Larynx p. Lid of larynx

(B) Trachea q. Air sacs

(C) Alveoli r. Voice box

(D) Epiglottis s. Wind pipe

t. common passage

(a) A-r, B-s, C-q, D-p (b) A-t, B-s, C-p, D-q

(c) A-r, B-s, C-q, D-t (d) A-r, B-t, C-q, D-p

156.Vital capacity of lungs is

(a) IRV + ERV + TV

(b) Inspiratory Reserve Volume (IRV) +Expiratory Reserve Volume (ERV)+ TidalVolume (TV) + Residual volume (RV)

(c) IRV + ERV + TV – RV

(d) IRV + ERV

157.Which of the following is respiratory organ ofscorpion ?

(a) Lungs (b) Book lungs

(c) Gills (d) Ctenidia

158.A wound making a hole through a person’s chestthem difficulty in breathing mainly because

(a) It would damage the nerves to the diaphragm

(b) Air breathed in in through the mouth andnose would escape through the hole

(c) The negative pressure caused by actionof thediaphragm would be lost through the holeinstead of the normal route through tracheaand bronchi

(d) The expansion of the thoracic cavity wouldsuck air in through the hole rather thanexpanding the lungs

159.Which is the correctl sequence of the air pasagein man

(a) Nasal cavity pharynx larynx trachea bronchi bronchioles alveoli

(b) Nasal cavity larynx bronchi pharynx trachea bronchioles alveoli

(c) Nasal cavity pharynx trachea larynx bronchi bronchioles alveoli

(d) Nasal cavity larynx pharynx trachea bronchi bronchioles alveoli

160.During expiration of the diaphragm becomes

(a) Normal (b) Flattened

(c) Dome shaped (d) Oblique

161.The movement of chloride ions from plasma toerythrocytes to maintain ionic balance duringtransport of gases is known as

(a) Chlorination

(b) Hamburger phenomenon

(c) Bicarbonate shift (d) CO2 transport

162.The vital capacity of lungs is equal to

(a) 4000 mL (b) 5000 mL

(c) 6000 mL (d) 7000 mL

163.One of the following is a very unique feature ofthe mammalian body

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TEST-1 SAMPLE PAPER for NEET(UG)-2020(a) Pressure of diaphragm

(b) Four chambered heart

(c) Rib Cage

(d) Homeothermy

164.When CO2 concentration in blood increases,breathing becomes

(a) There is no effect on breathing

(b) Slow and deep

(c) Faster and deeper

(d) Shallower and slow

165.Which is true for CO2 cocentration ?

(a) More in alveolar air than in expired air

(b) More in expired air than in alveolar air

(c) More in inspired air than in expired air

(d) More in inspired air than in alveolar air

166.Four possibilities for the transport of carbondioxide from the body cells to the lungs are givenbelow. Which possibility does not exist?

(a) Bound to the ferro-ions of haemoglobin inerythrocytes

(b) As a hydrocarbonate ion in the bufferingsystem of the blood

(c) Bound to the protein of haemoglobin inerythrocytes

(d) Dissolved in blood plasma and in erythrocytecytoplasm

167.Gas exchange in animals always involves

(a) Cellular respiration

(b) Breathing movements

(c) Active transport of gases

(d) Diffusion across membrane

168.Which statement explains why fish spend a logof energy removing oxygen from water ?

(a) They have to pump large volumes of waterthrough their gills to keep their respiratorymembranes moist

(b) The CO2 content of their tissues is muchhigher than that of terrestrial animals

(c) They have to pump large volumes of waterthrough their gills because of water’s lowoxygen content

(d) They have to pump large volumes of waterout of their gills because of water’s highoxygen content

169.If you arrange the following structures in theorder in which they would be pased by an oxygenmolecule during inspiration, which would bethird ?

(a) Bronchioles (b) Trachea

(c) Alveolus (d) Pharynx

170.The trachea, bronchi and bronchiles of humanshave all of the following functions EXCEPT

(a) Increasing the surface area available for gasexchange

(b) conducting mucous away from the alveoli

(c) Moistening the incoming air

(d) Warming the incoming air to bodytemperature

171.Carbonic anhydrase is an enzyme in red bloodcells that catalyses a reaction between carbondioxide and

(a) Bicarbonate (b) Carbonic acid

(c) Water (d) Haemoblobin

172.Which of the following are NOT involved in theprocess of breathing in humans ?

(a) Diaphragm (b) Rib muscles

(c) Neck muscles (d) Nervous system

173.Most of the CO2 carried by the blood in humansis carried as

(a) Bicarbonate ions in the plasma

(b) Carbonic acid in the erythrocytes

(c) Bicarbonate attached to haemoglobin

(d) All of the above

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TEST-1 SAMPLE PAPER for NEET(UG)-2020174.Which of the following lung volumes would be

different in a person at rest compared to thesame person while exercising ?

(a) Total lung capacity

(b) Tidal volume

(c) Residual volume

(d) Vital capacity

175.The volume of air breathed in and out duringeffortless respiration is referred to as

(a) Vital volumes (b) Residual volume

(c) Ideal volume (d) Tidal volume

176.The respiratory centre in the brain is stimulatedby

(a) CO2 concentration in venous blood

(b) O2 concentration in arterial blood

(c) CO2 concentration in arterial blood

(d) O2 concentration in venous blood

177.In respiration from 180 g of glucose which ofthe following is formed ?

(a) 264 gm CO2 + 190 gm H2O + 391 Kcal

(b) 264 gm CO2 + 108 gm H2O + 686 Kcal

(c) 390 gm CO2 + 108 gm H2O + 686 Kcal

(d) 390 gm CO2 + 264 gm H2O + 391 Kcal

178.If a man from sea coast of Kerala goes to MountEverest

(a) His breathing rate and heartbeat willdecrease

(b) His breathing rate and heartbeat willdecrease

(c) His breathing rate will increase, butheartbeat will decrease

(d) His breathing rate will decrease, butheartbeat will increase

179.If a person stays on Mount Everest for somedays

(a) His body will step down production of redblood corpuscles

(b) His body will step up production or red bloodcorpuscles

(c) Number of red blood corpuscles will notchange

(d) His red blood corpuscles will turn into verylarge cells

180.If O2 concentration his tissues were almost ashigh as at the respiratory surface

(a) Oxyhaemoglobin would not dissociate tosupply O2 to the tissues

(b) Haemoglobin would combine with more O2at respiratory surface

(c) CO2 will interfere with O2 transport

(d) None of these