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SSC CHSL (10+2) 2019 Memory Based (Solutions)

Reasoning

S1. Ans.(b)Sol.

S2. Ans.(b)Sol. 1 16242 1 13

S3. Ans.(a)Sol.

S4. Ans.(d)Sol. All are pair of opposite letters except CW.

S5. Ans.(b)Sol. 306 = 17² + 17132 = 11² + 11240 = 15² + 15270 ≠ 272 = 16² + 16

S6. Ans.(d)Sol. Except lion, rest are pet animals.

S7. Ans.(a)Sol. (i) Drama(iv) Dramality(ii) Dramatical(iii) Dramaticism(v) Dramatise


S8. Ans.(b)Sol.

S9. Ans.(c)Sol.

S10. Ans.(d)Sol.9 + 6 = 3 × 55 + 7 = 3 × 48 + 6 = 2 × 7

S11. Ans.(a)Sol.

S12. Ans.(a)Sol. a c c a b / a c c a b / a c c a b

S13. Ans.(c)Sol.

S14. Ans.(c)Sol.

Man is cousin of Suraj.


S15. Ans.(a)S16. Ans.(c)S17. Ans.(c)Sol.

S18. Ans.(c)Sol.

Neither I nor II follows.

S19. Ans.(b)Sol. 26 – 2 × 30 ÷ 6 + 16 = 20Inter changing – &+ we get,26 + 2 × 30 ÷ 6 – 16= 26 + 10 – 16 = 20

S20. Ans.(c)Sol.3!5 = (3×5) 2 = 305!8 = (5×8) 2 = 806!1 = (6×1) 2 = 12

2!2 = (2×2) 2 = 8

S21. Ans.(c)Sol. Opposite faces are

Option (c) cannot be made.


S22. Ans.(b)Sol.

S23. Ans.(c)Sol.20 triangles

S24. Ans.(a)Sol. A/c to Mayank, examination can be on 19th or 20th December.A/c to Suraj examination can be on 20th, 21st, 22nd or 23rd Dec.From Both observationS, 20th is common.

Examination is on 20th December.

S25. Ans.(c)Sol.4 × 3 = 12 4 × 4 = 165 × 3 = 15 5 × 4 = 206 × 3 = 18 6 × 4 = 24 ≠ 309 × 3 = 27 9 × 4 = 36

General Awareness

S26. Ans.(b)S27. Ans.(c)S28. Ans.(c)S29. Ans.(a)S30. Ans.(a)S31. Ans.(b)S32. Ans.(b)S33. Ans.(d)S34. Ans.(c)

S35. Ans.(c)S36. Ans.(c)S37. Ans.(b)S38. Ans.(b)S39. Ans.(d)S40. Ans.(a)S41. Ans.(d)S42. Ans.(c)S43. Ans.(b)

S44. Ans.(c)S45. Ans.(a)S46. Ans.(b)S47. Ans.(b)S48. Ans.(c)S49. Ans.(c)S50. Ans.(c)

Quantitative Aptitude

S51. Ans.(d)Sol.

They will complete 90% work in

18 days


S52. Ans.(d)Sol.

New P% . 100= 27.8%

S53. Ans.(b)Sol.25301430

2 5 11 232 5 11 13

2313

S54. Ans.(a)Sol.Let the sum be 100x.SI at 18% for 2 years = 36xCI at 18% for 2 years = 39.24xCI – SI = Rs 8139.24x – 36x = 81

x81

3.24 25

Sum = Rs 2500

S55. Ans.(b)Sol.

xcosA. cotA1 sinA

cos AsinA 1 sinA1 sinA

sinA= (CosecA+ 1)


S56. Ans. (d)Sol. We have,

Income Expenditure Saving45000 33000 12000

22% 11%54900 36630 18270¯ ¯ ¯

Increase in Savings = × 100 = 52.25%

S57. Ans.(d)Sol.

cos D8

17DEDF

Since, 8 units = 16 cm DF = 17 units = × 17

= 34 cm

S58. Ans.(b)Sol. CSA of cone = 858 cm²& slant height = 13 cmWe have, πrl = 858

πr85813 66

r6622 7 21 cm

Diameter = 2r = 21 × 2 = 42 cm

S59. Ans. (c)Sol. Let the length of faster train = x meterATQ,

x

3648

x = 480 meter


S60. Ans. (c)Sol.

x√5 1√5 1

and y√5 1√5 1

,

x y2 5 1

4 3

& x y4√5

4 √5

x² – y² = (x + y) (x – y) = 3√5

S61. Ans.(b)Sol.

2 , 3 , 1, 5= 2 , 3 , 1 , 5= 4, 27, 1, 5.

3 is greatest.

S62. Ans.(b)

Sol. We have, 9a² +²

43

Or (3a)² +² = 43.

3a 3a²

2 3= 43 + 6 = 493a + = 7

Now 27a³ +³ = 3a 3.3. 3a

= 343 – 63 = 280

S63. Ans.(c)

Sol. We have,:::

8 1520 6

12 10


S64. Ans.(b)Sol.Correct average = 30 3.3 30 33.3

S65. Ans.(a)Sol. Equivalent discount of 20% & 30%

or 100 56Discount = 44%Now, CP = 1400 × 784SP = 1176

Profit percentage = 100= 50%

S66. Ans.(a)Sol. X Y E : 5 4 We have, TW = Efficiency × timeTW = 4 × 10 = 40

Req. time = 8 days

S67. Ans.(d)Sol. sum of lthe measures of all the interior angle of a regular polygon = (2n–4) × 90= (2×6–4) × 90 = 8 × 90 = 720°

S68. Ans.(d)Sol.= 2sec²A= sec²A + sec²A= (1 + tan²A) + (1 + tan²A) + 2tanA – 2tanA= (1+ tan²A + 2tanA) + (1 + tan²A – 2tanA)= (1 +tanA)² + (1- tanA)²

S69. Ans.(d)Sol.

∆DGH ≈ ∆DEF


13

x7.2

x = 2.4 cmDF = x + 7.2 = 9.6 cm

S70. Ans.(d)Sol.

2x² - 7x + 5 = 02x² - 5x – 2x + 5 = 0x(2x – 5) – 1 (2x – 5) = 0(x – 1) (2x – 5) = 0x = 1 & {Real roots}

S71. Ans.(a)Sol.

sin5π3

sin 2ππ3

sinπ3

√32

S72. Ans(b)Sol.

+ [ – { ( x )}]

+ [ – { }]

7S73. Ans.(b)Sol.Sales of mobile phone brand A were the second highest.

S74. Ans.(d)Sol.Req. ratio = 280: 70 = 4: 1

S75. Ans.(b)Sol.

Req. value = – 0.6


English

S76. Ans.(c)Sol. ‘Atone’ takes preposition ‘for’ with it.

S77. Ans.(d)Sol. Following the rule, Had + Sub. + V3 (3rd form of verb)+………….Sub.+would + have +v3 (3rd form of verb)+……option D fits in the context.

S78. Ans.(a)Sol. “Should” is a “modal” which takes base form of verb i.e. “bother” withit.

S79. Ans.(b)Sol. ‘Start’ takes gerund form of verb used after it. Option B is the correct choice.

S80. Ans.(b)Sol. Replace ‘furnitures’ with ‘furniture’ as ‘furniture’ is an uncountable noun and doesn’t use in pluralform.

S81. Ans.(b)Sol. Enter (verb): come or go into (a place). As ‘into’ already consists in the meaning of ‘enter’. Thereforeusing ‘into’ after ‘enter’ makes its usage superfluous. Hence remove ‘into’ after ‘enter’.

S82. Ans.(c)Sol. Leave no stone unturned: make every possible effort, use every possible source or resource.

S83. Ans.(d)Sol. Herculean task: extremely difficult task; an almost impossible undertaking.

S84. Ans.(a)Sol. Inevitable: certain to happen; unavoidable.Hence Inevitable and Certain are synonyms to each other.

S85. Ans.(b)Sol. Adverse: preventing success or development; harmful; unfavorable.Hence Adverse and Unpleasant are synonyms to each other.

S86. Ans.(b)Sol. Malaise: a general feeling of discomfort.Well-being: the state of being comfortable or happy.Enervation: a feeling of being drained of energy or vitality; fatigue.Hence Malaise and Well-being are antonyms to each other.


S87. Ans.(b)Sol. Elude: evade or escape from (a danger, enemy or pursuer), typically in a skillful or cunning way.Dodge: avoid (someone or something) by a sudden quick movement.Thwart: prevent (someone) from accomplishing something.Hence Elude and Support are antonyms to each other.

S88. Ans.(c)Sol. In such situations the prepositions should not be omitted in the sentences.

S89. Ans.(a)

S90. Ans.(d)

S91. Ans(b)

S92. Ans(a)Sol. At the eleventh hour means the latest possible moment.

S93. Ans(d)Sol. The nitty-gritty means the most important aspects or practical details of a subject or situation.S94. Ans(d)S95. Ans(d)S96. Ans(c)S97. Ans(d)S98. Ans(c)S99. Ans(d)S100. Ans(c)

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1 Adda247 | No. 1 APP for Banking & SSC Preparation Website › wp-content › uploads › 2019 › 07 › ...Let the length of faster train = x meter ATQ, x 36 H 9 5 < L48 x = 480