Jee Main Online Paper 8 CBSE sample paper

Sri Chaitanya IIT Academy, India JEE-MAIN_ONLINE P8_Prepared by CBSE BOARD

Sri Chaitanya IIT Academy., India. A right Choice for the Real Aspirant

Central Office , Madhapur – Hyderabad Jee-Main_Online_Paper-8

PHYSICS 1.

1) 5.320 cm 2) 5.3 cm 3) 5.32 cm 4) 5.3200 cm

2.

1) 10 2) 2 10 s 3) 5s 4) 10s

3.

1) 2) 3) 4)

4.

1) cot 3 2 ) sec 3 4) cos 3ce 5) cos 3


5.

1) 0

02vmx

2) 2

0

0

23

vmx

3)

2020

vmx

4) 0

0

22vmx

6.

1) 75

gh 2)107

gh 3) 2gh 4) 72

gh

7.


1) Statement I is correct, Statement II is correct and statement II is correct explanation of the statement I. 2) Statement I is correct, Statement II is correct, Statement II is

correct is not the correct explanation of the statement I. 3) If Statement I is correct but the statement II is false 4) If Statement I is false, but Statement II is true

8.

1) 2r 2) r 3) 2r 4) 1r

9.

1) 5 /m s 2) 25 /m s 3) 10 /m s 4) 50 10 /m s

10.

1)2 2T 2) 2T 3) 4T 4)8T

11.


1) 0 032P VnR

2) 0 094P VnR

3) 0 092P VnR

4) 0 09P VnR

12.

1) Statement 1 is true, Statement 2 is false 2) Statement 1 is true, Statement 2 is true and Statement 2is the correct explanation

of Statement 1. 3) Statement 1 is true, Statement 2 is true and Statement 2is not the correct

explanation of Statement 1. 4) Statement 1 is false, Statement 2 is true

13.

1) cos /2a kx t

2) cosa kx t

3) cos /2a kx t

4) cosa kx t 14.

1) 2 n2RC l 2) 2 n7RC l 3) 3 n2RC l 4) 3 ln7RC


15.

1) 1

1 2

16Cn n

2) 21

1

16n Cn

3) 1

1 2

2Cn n

4) 21

1

2n Cn

16.

1) ,a b 2) , , ,a b c d 3) , ,a c d 4) , ,b c d

17.

1) 0.55W 2) 0.86W 3) 0.33W 4) 0.25W

18.

1) 4 N in z direction 2) 4 N in y direction 3) 8N in z direction 4) 8N in y direction


19.

1) 1.2 T and directed into the plane of page 2) 0.6 T and directed out of page 3) 0.6 T and directed into the plane of page 4) 1.2 T and directed out of page

20.

1) 4 2) 8 3) 2 4) 6

21.

1) infinite 2) 5 3) 3 4) zero


22.

1) 100 mm 2) 20 mm 3) 80 mm 4) 120 mm

23.

1) 55 10 cm 2) 51.25 10 cm

3) 52.5 10 cm 4) 510 10 cm

24.

1) 6.4,1.2 2) 6.4,0.67 3) 8.1,0.67 4) 8.1,1.2

25. 1) The rate of radio active decay can not be controlled but that of nuclear fission can

be controlled 2) nuclei of atoms having same number of neutrons are known as isobars 3) Nuclear forces are short range, attractive and charged dependent 4) Wavelength of matter waves is given by de-Broglie formula but that pf photons is

not given by the same formula

26.

1) 207 nm 2) 310 nm 3) 465 nm 4) 620 nm


27.

1) Statement 1 is true,Statement 2 is false 2) Statement 1 is true,Statement 2 is true,Statement 2 is the correct explanation of

Statement 1. 3) Statement 1 is true,Statement 2 is true,Statement 2 is not the correct explanation of

Statement 1. 4) Statement 1 is false,Statement 2 is true

28.

1) 2510 2) 3710 3) 3110 4) 4310

29.

1) High resistivity and low temperature co-efficient 2) High resistivity and high temperature co-efficient 3) low resistivity and high temperature co-efficient 4) low resistivity and low temperature co-efficient


30.

1) 1 2/m m 2) 2 1/m m 3) 1

2

mm 4) 2

1

mm

CHEMISTRY

31.

1) 250 2) 200 3) 400 4) 1000


32.

1) u v 2) u v 3)v u 4) u v

33.

1) Tetrahedral 2)Octahedral 3)Pyramidal 4) Trigonal

34.

1) 02 a 2) 04 a 3) 06 a 4) 08 a

35.

1) 2 2CH Cl 2) 2CH Cl

3) 4)

36.

1) 10J mol 2) 17482J mol 3) 12490J mol 4) 12490J mol

37.


1) 73.5% 2) 7.35% 3) 2.47% 4)1.36%

38.

1) 2 2) 3 3) 27 4) 36

39.

1) 2CN H O OH 2) 2OH CN H O

3) 2H O CN OH 4) 2OH H O CN

40.

1) 5,2,16 2) 2,5,16 3) 8,2,5 4) 5,8,4

41.

1) 0 2) 1 3) 1.5 4) 2

42.

1) Both are endothermic 2) Both are exothermic 3) Physisorption is endothermic but chemisorptions is exothermic 4) Chemisorption is endothermic bur physisorption is exothermic


43.

1) boron 2) carbon 3) nitrogen 4) oxygen

44.

1) lower the melting point of alumina 2) dissolve alumina in molten cryolite 3) increase the electrical conductivity 4) remove the impurities of alumina

45.

1) from 3sp to 2sp 2) from 2sp to 3sp

3) 2sp to 2dsp 4) from 3sp to 3sp d 46.

1) 3 2

Mg NO 2) 3 2Mg N

3) 3NH 4) MgO 47.

1) Uneven electron distribution 2) presence of more number of electrons in bonding orbitals 3) absence of bond polarity 4) lone bond energy

48.

1) 7.9 BM 2) 3.62 BM 3) 10.60 BM 4) 9.72 BM

49.


1) 2

2Zn en

2) 22Co en Cl

3) 3 24Co NH Cl

4) 3 22

Cr NH Cl

50.

1) Less than 5ppm 2) Equal to 5ppm 3) More than 17ppm 4) Equal to 10ppm

51.

1) 6.6 g 2) 8.09 g 3) 4.5 g 4) 5.6 g

52.

1) (i)> (ii)>(iii)>(iv) 2) (ii)> (iii)> (i)> (iv) 3) (iii)>(i)> (iv)>(ii) 4) (iv)>(i)> (ii)>(iii)

53.

1) 2)


3) 4)

54.

1) The reaction of methyl magnesium bromidie with acetone gives butanol – 2 2) Alkyl halides follow the following reactivity sequence on reaction with alkenes

R I R Br R Cl R F 3) 2 4 2C H Cl may exist in two isomeric forms 4) Ethyl chloride on reduction with Zn-Cu couple and alcohol gives ethane

55.

1) Clemmenson reduction 2) Wolf-Kishner reduction 3) Rosenmund reduction 4) Cannizaro’s reaction

56.

1) Gatteramnn reaction 2) Azo coupling reaction 3) Friedel-Crafts reaction 4) Reimer-Tiemann reaction

57.

1) Phenol and Formaldehyde 2) Adipic acid and Ethylene Glycol 3) Styrene and Vinyl Chloride 4) Acrylonitrile and Vinyl Chloride

58.

1) Amylase 2) D glucose 3) D glucose 4) Amino acid


59.

1) Morphine monoacetate 2) Morphine diacetate 3) Morphine monobenzoate 4) Morphine dibenzoate

60.

1) 4 mL 2) 40 mL 3) 2 mL 4) 2

MATHEMATICS

61.

1) 202 2) 152 3) 102 4) 52

62.

1) 21

2z 2)

2z 3) 22 z 4)

24 z

63.

1) 4

2) 3

3) 2

4)6


64.

1) 4 2)abc 3) a+b+c 4) 1

65.

1) Statement 1 is true, Statement 2 is true;Statement 2 is a correct explanation for

Statement 1. 2) Statement 1 is true, Statement 2 is true;Statement 2 is not a correct explanation for

Statement 1. 3) Statement 1 is true, Statement 2 is false. 4) Statement 1 is false, Statement 2 is true.

66.




67.

1) five 2) six 3) seven 4) twelve


68.

1) a,b,c,d are inA.P 2) a,b,c,d are inG.P 3) ac=bd 4) ab=cd

69.

1) 1 2) 2 3) 3 4) 4

70.




71.

1) 2

123 2x

2) 2

12 2 3sin log3 23 2x

xx

3) 2 3sin log3 2x

x

4) 2

12 2 3cos log3 23 2x

xx


72.

1) increasing on [-1/2,1]

2) decreasing on R

3) increasing on R

4) decreasing on [-1/2,1]

73.

1) 1 m 2) 2 m 3) 3 m 4) 4 m

74.


Statement 1.

2) Statement 1 is true, Statement 2 is true;Statement 2 is not a correct explanation for

Statement 1.

3) Statement 1 is true, Statement 2 is false.

4) Statement 1 is false, Statement 2 is true.

75.

1) 2log 1x C 2) 21 log 12

x C


3) 21 log 12

x C 4) 2log 1x C

76.

1) 1 1

22G G

2)

1 12 4

G G

3) 4 16

G G 4) 2

4 16G G

77.

1) 8 3 2) 4 3 3) 16 3 4) 2

78.

1) 1 5 2) 5 7 3) 19 35 4) 35 19

79.

1) 13 2) 5 3) 14 4) 7

80.


1) 3 2 2

17i j k

2) 2 2

3i j k

3) 3 2 2

17i j k

4) 2

5j k

81. 1) p q 2) p q q p

3) p q q p 4) p q q p

82.

1) 3, 4, 2 2) 5, 8, 4

3) 1, 1, 10 4) 2, 3,8

83.




84.

1) 0.331 2) 0.332 3) 0.333 4) 0.334


85.

1) 8 2) 5 3) 3 4) 1

86.

1) 1 2) 2 3) 4 4) 8 87.

1) 5 2) 10 3) 2 3 4) 2 2

88.

1) 2 : 3 2 2) 3 : 3 3 3) 3 4 : 4 4) 3 8 : 8

89.

1) ,0 2) 10,2

3)

31,2

4)

3 ,2

90.

1) 4,7 2) 4, 7 3) 4, 7 4) 4,7

Jee Main Online Paper 8 CBSE sample paper

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