02. REV FULL TEST-1 JEE MAIN-2020 KEY & SOLREV_FULL+TEST... · 1 ñ 1 Û 1 x x , _ ] ð 1 1 ï w ð...
Transcript of 02. REV FULL TEST-1 JEE MAIN-2020 KEY & SOLREV_FULL+TEST... · 1 ñ 1 Û 1 x x , _ ] ð 1 1 ï w ð...
KUKATPALLY CENTRE: # 22-97, Plot No.1, Opp. Patel Kunta Huda Park, Vijaynagar Colony, Hyderabad - 500 072. Ph.: 040-64601123 MIYAPUR CENTRE: Above Sai Motors Maruthi Showroom, Allwyn X Road, Miyapur, Hyderabad.
INTERNAL TEST
SECOND YEAR 2018-20
REVISION FULL TEST-1
Q. No. KEY Q. No. KEY Q. No. KEY
1. D 26. B 51. B
2. C 27. B 52. A
3. B 28. B 53. A
4. A 29. B 54. A
5. B 30. A 55. B
6. C 31. B 56. C
7. C 32. C 57. C
8. B 33. A 58. B
9. B 34. B 59. C
10. A 35. B 60. B
11. B 36. A 61. A
12. C 37. C 62. B
13. B 38. A 63. B
14. D 39. B 64. D
15. D 40. B 65. C
16. C 41. D 66. C
17. C 42. D 67. B
18. D 43. B 68. B
19. C 44. D 69. B
20. C 45. B 70. C
21. 0 46. 3 71. 3
22. 3 47. 2 72. 8
23. 10 48. 4 73. 8
24. 4 49. 3 74. 2
25. 7 50. 3 75. 3
KUKATPALLY CENTRE: # 22-97, Plot No.1, Opp. Patel Kunta Huda Park, Vijaynagar Colony, Hyderabad - 500 072. Ph.: 040-64601123 MIYAPUR CENTRE: Above Sai Motors Maruthi Showroom, Allwyn X Road, Miyapur, Hyderabad.
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KUKATPALLY CENTRE: # 22-97, Plot No.1, Opp. Patel Kunta Huda Park, Vijaynagar Colony, Hyderabad - 500 072. Ph.: 040-64601123 MIYAPUR CENTRE: Above Sai Motors Maruthi Showroom, Allwyn X Road, Miyapur, Hyderabad.
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KUKATPALLY CENTRE: # 22-97, Plot No.1, Opp. Patel Kunta Huda Park, Vijaynagar Colony, Hyderabad - 500 072. Ph.: 040-64601123 MIYAPUR CENTRE: Above Sai Motors Maruthi Showroom, Allwyn X Road, Miyapur, Hyderabad.
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KUKATPALLY CENTRE: # 22-97, Plot No.1, Opp. Patel Kunta Huda Park, Vijaynagar Colony, Hyderabad - 500 072. Ph.: 040-64601123 MIYAPUR CENTRE: Above Sai Motors Maruthi Showroom, Allwyn X Road, Miyapur, Hyderabad.
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KUKATPALLY CENTRE: # 22-97, Plot No.1, Opp. Patel Kunta Huda Park, Vijaynagar Colony, Hyderabad - 500 072. Ph.: 040-64601123 MIYAPUR CENTRE: Above Sai Motors Maruthi Showroom, Allwyn X Road, Miyapur, Hyderabad.
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18. Given planes are 4 x y z ---------- (1) and 2 4 x y z ---------- (2)
Since required plane passes through the line of intersection (1) & (2) Its equation is ( 4) ( 2 4) 0 x y z x y z
(1 ) ( 1) (2 1) (4 4) 0 x y z ---------- (3) Since (1) & (3) are perpendicular
1(1 ) 1( 1) 1(2 1) 0 1 1 2 1 0 3/ 2
Its equations is 3
( 4) ( 2 4) 02
x y z x y z
5 4 20 0 x y z
KUKATPALLY CENTRE: # 22-97, Plot No.1, Opp. Patel Kunta Huda Park, Vijaynagar Colony, Hyderabad - 500 072. Ph.: 040-64601123 MIYAPUR CENTRE: Above Sai Motors Maruthi Showroom, Allwyn X Road, Miyapur, Hyderabad.
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So, Number of ways to arrange
20.
2 2
4 2 2 2n 2 n 2
2 2n 2
n 1 n 1n 1
41 n 2n n 1 n 1
1 1 1 5
4 16n 1 n 1
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KUKATPALLY CENTRE: # 22-97, Plot No.1, Opp. Patel Kunta Huda Park, Vijaynagar Colony, Hyderabad - 500 072. Ph.: 040-64601123 MIYAPUR CENTRE: Above Sai Motors Maruthi Showroom, Allwyn X Road, Miyapur, Hyderabad.
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KUKATPALLY CENTRE: # 22-97, Plot No.1, Opp. Patel Kunta Huda Park, Vijaynagar Colony, Hyderabad - 500 072. Ph.: 040-64601123 MIYAPUR CENTRE: Above Sai Motors Maruthi Showroom, Allwyn X Road, Miyapur, Hyderabad.
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KUKATPALLY CENTRE: # 22-97, Plot No.1, Opp. Patel Kunta Huda Park, Vijaynagar Colony, Hyderabad - 500 072. Ph.: 040-64601123 MIYAPUR CENTRE: Above Sai Motors Maruthi Showroom, Allwyn X Road, Miyapur, Hyderabad.
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KUKATPALLY CENTRE: # 22-97, Plot No.1, Opp. Patel Kunta Huda Park, Vijaynagar Colony, Hyderabad - 500 072. Ph.: 040-64601123 MIYAPUR CENTRE: Above Sai Motors Maruthi Showroom, Allwyn X Road, Miyapur, Hyderabad.
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1/ 2
0.693t
36. A
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40. B
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KUKATPALLY CENTRE: # 22-97, Plot No.1, Opp. Patel Kunta Huda Park, Vijaynagar Colony, Hyderabad - 500 072. Ph.: 040-64601123 MIYAPUR CENTRE: Above Sai Motors Maruthi Showroom, Allwyn X Road, Miyapur, Hyderabad.
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45. B
Conceptual 46.
KUKATPALLY CENTRE: # 22-97, Plot No.1, Opp. Patel Kunta Huda Park, Vijaynagar Colony, Hyderabad - 500 072. Ph.: 040-64601123 MIYAPUR CENTRE: Above Sai Motors Maruthi Showroom, Allwyn X Road, Miyapur, Hyderabad.
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KUKATPALLY CENTRE: # 22-97, Plot No.1, Opp. Patel Kunta Huda Park, Vijaynagar Colony, Hyderabad - 500 072. Ph.: 040-64601123 MIYAPUR CENTRE: Above Sai Motors Maruthi Showroom, Allwyn X Road, Miyapur, Hyderabad.
51. B Enthalpy of formation of NH3 = –46 kJ/mole N2 + 3H2 2NH3 Hf = – 2 x 46 kJ mol Bond breaking is endothermic and Bond formation is exothermic Assuming ‘x’ is the bond energy of N–H bond (kJ mol–1) 712 + (3 x 436)– 6x = –46 x 2 x = 352 kJ/mol 52. A Conceptual 53. A Conceptual 54. A Conceptual 55. B Only option (B) is having non–super imposable mirror image & hence one optical isomer.
Zn+
NH3
NH3
en
no optical isomer. It is
Tetrahedral with a plane of symmetry
Co+
Co+
en en
en
enen
en
optical isomer
( 1) ( 2)
2
3 3
H2O
H2O
Co+
H2O
H2O
en
Horizontal plane is plane of symmtry
Zn+
en
en
no optical isomer, it is
tetrahedral with a plane of symmetry
3) 4)
3
2
56. C
salt
pH pKa logacid
= 4.74 + 0.25
log0.05
= 4.74 + log5 = 5.44
57. C Conceptual 58. B Conceptual 59. C Conceptual 60. B Dibal Reduces acid into aldehyde which reacts with alcohol to form hemiacetal in acidic medium. 61. A Conceptual
KUKATPALLY CENTRE: # 22-97, Plot No.1, Opp. Patel Kunta Huda Park, Vijaynagar Colony, Hyderabad - 500 072. Ph.: 040-64601123 MIYAPUR CENTRE: Above Sai Motors Maruthi Showroom, Allwyn X Road, Miyapur, Hyderabad.
62. B Conceptual 63. B Conceptual 64. D Conceptual 65. C Conceptual 66. C Benzoic acid dimerizes in benzene. In other cases neither association nor dissociation takes
place. 67. B Conceptual 68. B Since the reduction potential 3 2Mn /Mn
E is higher than 2Mn /MnE , the reaction Mn3+ Mn2+ is
favoured and the concentration of Mn3+ will decrease and that of Mn2+ will increase. 69. B
2 2CO g Cl g COCl g
Partial pressure 2 2 2 At equilibrium
2
2
COClP
CO Cl
p 2 1K
p p 2 2 2
70. C Conceptual 71. 3 Conceptual 72. 8
73. 8
74. 2
75. 3