Mock Test 8 — IB ACIO Tier 1 Pattern (100 MCQs)

Section A: Current Affairs & Static GK (20 Questions)

1. The Central Vigilance Commission was established primarily to address:
   (a) Corruption in government departments (b) Railway punctuality issues exclusively (c) Postal service delays exclusively (d) Banking sector interest rates exclusively
2. The Lokpal, an anti-corruption ombudsman institution, was established under the:
   (a) Lokpal and Lokayuktas Act, 2013 (b) Right to Information Act, 2005 (c) Prevention of Corruption Act, 1988 exclusively (d) Companies Act, 2013
3. The Prevention of Money Laundering Act (PMLA) is primarily enforced by the:
   (a) Enforcement Directorate (ED) (b) Central Bureau of Investigation exclusively (c) Intelligence Bureau exclusively (d) National Investigation Agency exclusively
4. The Financial Intelligence Unit-India (FIU-IND) primarily deals with:
   (a) Analysis of suspicious financial transactions to combat money laundering (b) Railway ticketing fraud exclusively (c) Postal money order fraud exclusively (d) Agricultural subsidy fraud exclusively
5. Cybercrime complaints in India can be reported through the national portal:
   (a) The National Cyber Crime Reporting Portal (b) A postal complaint box exclusively (c) A railway helpline exclusively (d) A banking ombudsman portal exclusively, with no relation to cybercrime
6. The Indian Computer Emergency Response Team (CERT-In) primarily deals with:
   (a) Cybersecurity incident response and coordination (b) Railway safety incident response exclusively (c) Postal service incident response exclusively (d) Banking transaction disputes exclusively
7. The Personal Data Protection framework in India, addressing data privacy, has evolved through legislation including the:
   (a) Digital Personal Data Protection Act, 2023 (b) Right to Information Act, 2005 exclusively (c) Companies Act, 2013 exclusively (d) Indian Penal Code exclusively, with no dedicated data protection law
8. The National Crime Records Bureau (NCRB) is primarily responsible for:
   (a) Collecting and analysing crime data across India (b) Railway ticketing exclusively (c) Postal service operations exclusively (d) Banking sector regulation exclusively
9. The Central Reserve Police Force (CRPF) is India's largest:
   (a) Central Armed Police Force (b) State police force exclusively (c) Railway protection force exclusively (d) Postal security force exclusively
10. The Border Security Force (BSF) primarily guards India's border with:
    (a) Pakistan and Bangladesh, among others (b) Only China, with no relation to other borders (c) Only Nepal, with no relation to other borders (d) Only Myanmar, with no relation to other borders
11. The Indo-Tibetan Border Police (ITBP) primarily guards India's border with:
    (a) China (b) Pakistan exclusively (c) Bangladesh exclusively (d) Nepal exclusively
12. The Sashastra Seema Bal (SSB) primarily guards India's border with:
    (a) Nepal and Bhutan (b) China exclusively (c) Pakistan exclusively (d) Myanmar exclusively
13. The National Disaster Management Authority (NDMA) coordinates India's response to:
    (a) Natural and man-made disasters (b) Only railway accidents, with no broader disaster mandate (c) Only banking sector failures, with no broader disaster mandate (d) Only postal service disruptions, with no broader disaster mandate
14. The National Disaster Response Force (NDRF) is the specialised force for:
    (a) Disaster response operations (b) Railway ticketing operations exclusively (c) Postal delivery operations exclusively (d) Banking sector audits exclusively
15. The Central Industrial Security Force (CISF) primarily provides security to:
    (a) Industrial installations, airports, and other critical infrastructure (b) Only railway stations, with no other mandate (c) Only postal offices, with no other mandate (d) Only banking branches, with no other mandate
16. The Railway Protection Force (RPF) is primarily responsible for security on:
    (a) Indian Railways property and passengers (b) Airports exclusively, with no railway mandate (c) Postal offices exclusively, with no railway mandate (d) Banking premises exclusively, with no railway mandate
17. The Coast Guard of India primarily safeguards India's:
    (a) Maritime interests and coastline (b) Land borders exclusively, with no maritime mandate (c) Airspace exclusively, with no maritime mandate (d) Railway network exclusively, with no maritime mandate
18. The Defence Research and Development Organisation (DRDO) primarily focuses on:
    (a) Research and development of defence technology (b) Railway technology exclusively (c) Postal technology exclusively (d) Banking technology exclusively
19. The Hindustan Aeronautics Limited (HAL) is primarily engaged in:
    (a) Aircraft and aerospace manufacturing (b) Railway rolling stock manufacturing exclusively (c) Postal vehicle manufacturing exclusively (d) Banking software development exclusively
20. The Bharat Electronics Limited (BEL) is primarily engaged in:
    (a) Defence and aerospace electronics manufacturing (b) Railway signalling manufacturing exclusively (c) Postal sorting equipment manufacturing exclusively (d) Banking ATM manufacturing exclusively

Section B: General Studies — History, Polity, Geography, Economy, Science (20 Questions)

21. Akbar's religious policy, known as "Sulh-i-Kul," emphasised:
    (a) Universal peace and tolerance among religions (b) Strict enforcement of a single state religion (c) Persecution of all non-Muslim subjects (d) Complete rejection of any religious tolerance
22. Akbar's land revenue system, known as the "Zabti" or "Todar Mal's Bandobast," was based on:
    (a) Measurement of land and assessment of crop yield (b) Random, arbitrary taxation with no systematic assessment (c) Taxation based solely on the ruler's discretion, with no land measurement (d) Complete exemption from any land tax
23. Shah Jahan is particularly remembered for commissioning the construction of the:
    (a) Taj Mahal (b) Qutub Minar (c) Red Fort of Delhi exclusively, with no relation to the Taj Mahal (d) Gateway of India
24. Aurangzeb, the last major Mughal emperor, is noted for reversing several of Akbar's:
    (a) Religious tolerance policies (b) Land revenue reforms exclusively, with no relation to religious policy (c) Military campaigns exclusively, with no relation to religious policy (d) Architectural projects exclusively, with no relation to religious policy
25. The Third Battle of Panipat (1761) was fought between the Marathas and the:
    (a) Afghan forces of Ahmad Shah Abdali (b) British East India Company (c) Portuguese forces (d) French forces
26. The Battle of Buxar (1764), a significant event in British colonial expansion, resulted in the British gaining:
    (a) Diwani rights (revenue collection rights) over Bengal, Bihar, and Odisha (b) Complete control over the entire subcontinent immediately (c) No territorial or administrative gain whatsoever (d) Control over southern India exclusively
27. Under the Indian Constitution, the Union List, State List, and Concurrent List together form the:
    (a) Seventh Schedule (b) First Schedule (c) Ninth Schedule (d) Tenth Schedule
28. The Tenth Schedule of the Indian Constitution deals with:
    (a) Anti-defection provisions (b) Union-State relations exclusively (c) Fundamental Rights exclusively (d) Directive Principles exclusively
29. The Ninth Schedule of the Indian Constitution was originally introduced to:
    (a) Protect certain land reform laws from judicial review (b) List the official languages of India (c) List the states and union territories (d) List the qualifications for Presidential candidacy
30. The National Commission for Women is a statutory body established to:
    (a) Safeguard the rights and interests of women (b) Regulate railway fares exclusively (c) Regulate postal tariffs exclusively (d) Regulate banking interest rates exclusively
31. The Coromandel Coast lies along India's:
    (a) South-eastern coastline (b) North-western coastline (c) Northern land border exclusively (d) Southern land border exclusively, with no coastal relevance
32. The Malabar Coast lies along India's:
    (a) South-western coastline (b) North-eastern coastline (c) Northern land border exclusively (d) Eastern land border exclusively, with no coastal relevance
33. The Rann of Kutch, a large salt marsh, is located in the state of:
    (a) Gujarat (b) Rajasthan (c) Maharashtra (d) Madhya Pradesh
34. A "revenue deficit" in government finances refers to the excess of revenue expenditure over:
    (a) Revenue receipts (b) Total population (c) Capital expenditure exclusively, with no relation to revenue receipts (d) Total foreign exchange reserves
35. Disinflation, distinct from deflation, refers to a:
    (a) Slowdown in the rate of inflation, without prices actually falling (b) Sustained fall in the general price level (c) Sustained rise in the general price level at an accelerating rate (d) Complete absence of any price change whatsoever, permanently
36. Stagflation refers to an economic condition characterised by simultaneously high:
    (a) Inflation and unemployment, alongside stagnant growth (b) Growth and employment, with no inflation whatsoever (c) Deflation and employment, with no growth whatsoever (d) Growth and inflation, with zero unemployment
37. The human circulatory system's primary pumping organ is the:
    (a) Heart (b) Liver (c) Kidney (d) Lungs
38. The human respiratory system's primary gas exchange organs are the:
    (a) Lungs (b) Heart (c) Liver (d) Kidneys
39. The largest gland in the human body is the:
    (a) Liver (b) Pancreas (c) Thyroid (d) Pituitary
40. The chemical formula for carbon dioxide is:
    (a) CO2 (b) CO (c) O2 (d) H2CO3

Section C: Numerical Aptitude (20 Questions)

41. A sum of ₹9,000 is invested at 4% simple interest for 5 years; the interest earned is:
    (a) ₹1,800 (b) ₹1,600 (c) ₹2,000 (d) ₹1,500
42. If the ratio of two numbers is 7:8 and their sum is 105, the larger number is:
    (a) 56 (b) 49 (c) 60 (d) 52
43. A train 170 m long crosses a platform 230 m long in 20 seconds; its speed is:
    (a) 72 km/h (b) 40 km/h (c) 60 km/h (d) 36 km/h
44. Two pipes fill a tank in 8 and 12 minutes respectively; together they fill it in:
    (a) 4.8 minutes (b) 10 minutes (c) 20 minutes (d) 6 minutes
45. The average of 5, 15, 25, 35, and 45 is:
    (a) 25 (b) 20 (c) 30 (d) 35
46. If the cost price is ₹1,200 and the profit is 25%, the selling price is:
    (a) ₹1,500 (b) ₹1,400 (c) ₹1,450 (d) ₹1,350
47. A sum becomes 4 times itself in 15 years at simple interest; the rate of interest per annum is:
    (a) 20% (b) 15% (c) 25% (d) 10%
48. The compound interest on ₹10,000 at 5% per annum for 2 years is:
    (a) ₹1,025 (b) ₹1,000 (c) ₹500 (d) ₹1,050
49. If a:b = 4:9 and b:c = 3:5, then a:b:c is:
    (a) 12:27:45 (b) 4:9:5 (c) 3:9:5 (d) 4:3:5
50. The next term in the series 8, 16, 32, 64, ... is:
    (a) 128 (b) 96 (c) 80 (d) 144
51. The next term in the series 3, 6, 12, 24, 48, __ is:
    (a) 96 (b) 72 (c) 84 (d) 60
52. A car covers 400 km in 8 hours; its average speed is:
    (a) 50 km/h (b) 40 km/h (c) 60 km/h (d) 45 km/h
53. If 35% of a number is 105, the number is:
    (a) 300 (b) 280 (c) 320 (d) 350
54. A mixture of juice and water in the ratio 4:1 totals 25 litres; the quantity of juice is:
    (a) 20 litres (b) 15 litres (c) 12 litres (d) 18 litres
55. If 12 workers complete a task in 10 days, 8 workers (at the same rate) would complete it in:
    (a) 15 days (b) 12 days (c) 20 days (d) 8 days
56. The HCF of 15 and 25 is:
    (a) 5 (b) 3 (c) 75 (d) 10
57. The LCM of 12 and 16 is:
    (a) 48 (b) 192 (c) 4 (d) 24
58. A boat travels 60 km downstream in 5 hours, with a current speed of 2 km/h; the boat's still-water speed is:
    (a) 10 km/h (b) 14 km/h (c) 8 km/h (d) 6 km/h
59. If the cost price is ₹500 and the loss is 12%, the selling price is:
    (a) ₹440 (b) ₹460 (c) ₹450 (d) ₹470
60. A sum becomes ₹5,500 in 2 years and ₹6,000 in 3 years at simple interest; the principal is:
    (a) ₹4,500 (b) ₹5,000 (c) ₹4,700 (d) ₹4,300

Section D: Reasoning and Logical Aptitude (20 Questions)

61. Find the odd one out: Lion, Tiger, Leopard, Sparrow
    (a) Sparrow (a bird, the rest are big cats) (b) Lion (c) Tiger (d) Leopard
62. If "APPLE" is coded as "BQQMF" (each letter shifted by +1), then "GRAPE" is coded as:
    (a) HSBQF (b) HSBPF (c) HSAQF (d) GSBQF
63. A is the wife of B; C is the daughter of B; C is related to A as:
    (a) Daughter (b) Sister (c) Mother (d) Aunt
64. Statement: "All lawyers are graduates. Some graduates are politicians." Conclusion: "Some lawyers are politicians." This conclusion is:
    (a) Not necessarily true (b) Definitely true (c) Definitely false (d) Cannot be determined either way with certainty
65. Find the missing number: 6, 11, 18, 27, __
    (a) 38 (b) 36 (c) 40 (d) 35
66. If today is Monday, what day will it be after 45 days?
    (a) Thursday (b) Wednesday (c) Friday (d) Tuesday
67. In a row, if T is 10th from the left and 8th from the right, the total number of persons is:
    (a) 17 (b) 18 (c) 16 (d) 19
68. Choose the analogy: Fish is to Sea as Lion is to:
    (a) Jungle (b) Zoo (c) Cage (d) Forest, only when explicitly distinguished from jungle
69. If a person walks 5 km west, then 12 km north, the straight-line distance from the starting point is:
    (a) 13 km (b) 17 km (c) 7 km (d) 12 km
70. A is the sister of B; C is the son of B; C is related to A as:
    (a) Nephew (b) Brother (c) Son (d) Father
71. Find the next term: 2, 5, 11, 23, 47, __
    (a) 95 (b) 90 (c) 94 (d) 96
72. Five friends F, G, H, I, and J are sitting in a row. F is to the immediate left of G, and H is to the immediate right of G. The sequence F-G-H represents:
    (a) A consecutive arrangement matching the given clues (b) An arrangement unrelated to the given clues (c) A circular, not linear, arrangement (d) An arrangement where F and H are necessarily adjacent to each other directly
73. In a code, "TIGER" is written as "UJHFS" (each letter shifted by +1); following the same code, "MOUSE" is written as:
    (a) NPVTF (b) NPUTF (c) NPVSF (d) MPVTF
74. If the 4th of a month is Wednesday, what day is the 25th of the same month?
    (a) Wednesday (b) Tuesday (c) Thursday (d) Friday
75. Choose the odd one out: Rose, Jasmine, Marigold, Carrot
    (a) Carrot (a vegetable, the rest are flowers) (b) Rose (c) Jasmine (d) Marigold
76. At 4:00, the angle between the hour and minute hands of a clock is:
    (a) 120° (b) 90° (c) 60° (d) 150°
77. If "3 % 5 = 15" and "4 % 6 = 24" following a defined pattern (product of the two numbers), then "7 % 2" equals:
    (a) 14 (b) 12 (c) 16 (d) 9
78. In a family, A is B's grandfather, and C is B's father; A is related to C as:
    (a) Father (b) Son (c) Brother (d) Uncle
79. Find the odd one out: 25, 36, 49, 55
    (a) 55 (not a perfect square, unlike the others) (b) 25 (c) 36 (d) 49
80. Complete the analogy: Carpenter is to Wood as Blacksmith is to:
    (a) Metal (b) Wood (c) Cloth (d) Clay

Section E: English Language (20 Questions)

81. Choose the correctly spelled word:
    (a) Maintenance (b) Maintainance (c) Maintenence (d) Maintainence
82. Choose the synonym of "Frugal":
    (a) Thrifty (b) Extravagant (c) Wasteful (d) Lavish
83. Choose the antonym of "Diligent":
    (a) Lazy (b) Industrious (c) Hardworking (d) Careful
84. Fill in the blank: "She is allergic ___ peanuts."
    (a) To (b) Of (c) With (d) At
85. Identify the correctly punctuated sentence:
    (a) "I need pens, paper, and folders." (b) "I need pens paper, and folders." (c) "I need, pens paper and folders." (d) "I need pens paper and, folders."
86. Choose the correct passive voice: "The company launched a new product."
    (a) A new product was launched by the company (b) A new product is launched by the company (c) A new product has launched the company (d) A new product will launch the company
87. Choose the one-word substitute for "a place where weapons are stored":
    (a) Armoury (b) Arsenal, used interchangeably in general usage (c) Foundry (d) Warehouse, used in a general non-specific sense
88. Identify the error in: "One of the boys have lost his book."
    (a) "have" should be "has," since "one" is singular (b) "boys" should be "boy," with no relation to the actual error (c) "lost" should be "losing," with no relation to the actual error (d) There is no error in this sentence
89. Choose the correct meaning of the idiom "to turn over a new leaf":
    (a) To start behaving in a better way than before (b) To read a book quickly (c) To change one's place of residence (d) To argue over a trivial matter
90. Fill in the blank with the correct preposition: "He succeeded ___ his efforts."
    (a) In (b) At (c) On (d) With
91. Choose the plural form of "sheep":
    (a) Sheep (unchanged in the plural) (b) Sheeps (c) Sheepes (d) Sheepen
92. Identify the correctly formed question: "___ you mind if I open the window?"
    (a) Would (b) Should (c) Must (d) Shall
93. Choose the synonym of "Candid":
    (a) Frank (b) Evasive (c) Secretive (d) Deceptive
94. Choose the antonym of "Verbose":
    (a) Concise (b) Wordy (c) Lengthy (d) Rambling
95. Identify the sentence with correct subject-verb agreement:
    (a) "The news is very encouraging." (b) "The news are very encouraging." (c) "The news is very encouragings." (d) "The news are very encouragings."
96. Choose the correct article: "It was ___ hour before the meeting started." (Note the silent "h")
    (a) An (b) A (c) The, exclusively (d) No article is required
97. Choose the one-word substitute for "one who is unable to pay their debts":
    (a) Insolvent (b) Solvent (c) Affluent (d) Prosperous
98. Identify the correctly rearranged sentence: "the / finished / homework / quickly / student"
    (a) "The student finished the homework quickly." (b) "Quickly the student finished the homework." (c) "Finished the student the homework quickly." (d) "The homework the student finished quickly."
99. Choose the antonym of "Gregarious":
    (a) Reclusive (b) Sociable (c) Outgoing (d) Friendly
100. Choose the correct sentence:
     (a) "Not only he but also his friends were invited." (b) "Not only he but also his friends was invited." (c) "Not only he but also his friends, were invited." (d) "Not only he but also friends were invited."

Answer Key with Explanations

1.(a) The Central Vigilance Commission addresses government corruption.

2.(a) The Lokpal was established under the Lokpal and Lokayuktas Act, 2013.

3.(a) PMLA is enforced by the Enforcement Directorate.

4.(a) FIU-IND analyses suspicious transactions against money laundering.

5.(a) Cybercrime is reported via the National Cyber Crime Reporting Portal.

6.(a) CERT-In handles cybersecurity incident response.

7.(a) The Digital Personal Data Protection Act, 2023, addresses data privacy.

8.(a) NCRB collects/analyses crime data.

9.(a) CRPF is India's largest Central Armed Police Force.

10.(a) BSF guards borders with Pakistan and Bangladesh, among others.

11.(a) ITBP guards the border with China.

12.(a) SSB guards borders with Nepal and Bhutan.

13.(a) NDMA coordinates disaster response.

14.(a) NDRF is the specialised disaster response force.

15.(a) CISF secures industrial installations, airports, etc.

16.(a) RPF secures Indian Railways property/passengers.

17.(a) The Coast Guard safeguards maritime interests/coastline.

18.(a) DRDO focuses on defence technology R&D.

19.(a) HAL is engaged in aircraft/aerospace manufacturing.

20.(a) BEL is engaged in defence/aerospace electronics.

21.(a) Sulh-i-Kul emphasised universal peace/tolerance.

22.(a) Todar Mal's Bandobast was based on land measurement/crop assessment.

23.(a) Shah Jahan commissioned the Taj Mahal.

24.(a) Aurangzeb reversed Akbar's religious tolerance policies.

25.(a) Third Panipat was fought between Marathas and Ahmad Shah Abdali's forces.

26.(a) Battle of Buxar gave the British Diwani rights over Bengal, Bihar, Odisha.

27.(a) Union/State/Concurrent Lists form the Seventh Schedule.

28.(a) The Tenth Schedule deals with anti-defection provisions.

29.(a) The Ninth Schedule protected certain land reform laws from judicial review.

30.(a) NCW safeguards women's rights/interests.

31.(a) The Coromandel Coast is south-eastern.

32.(a) The Malabar Coast is south-western.

33.(a) The Rann of Kutch is in Gujarat.

34.(a) Revenue deficit = revenue expenditure exceeding revenue receipts.

35.(a) Disinflation is a slowdown in inflation rate, not falling prices.

36.(a) Stagflation combines high inflation/unemployment with stagnant growth.

37.(a) The heart is the circulatory system's pumping organ.

38.(a) The lungs are the respiratory gas-exchange organs.

39.(a) The liver is the largest gland.

40.(a) CO2 is carbon dioxide's formula.

41.(a) SI=9000×4×5/100=₹1800.

42.(a) 7x+8x=105→x=7, larger=56.

43.(a) (170+230)/20=20m/s=72km/h.

44.(a) Combined rate=1/8+1/12=5/24, time=24/5=4.8 minutes.

45.(a) Average=(5+15+25+35+45)/5=125/5=25.

46.(a) SP=1200×1.25=₹1500.

47.(a) 4x means 300% increase in 15 yrs: 300/15=20%.

48.(a) CI=10000×(1.05²−1)=₹1025.

49.(a) Scale b to LCM(9,3)=9: a:b:c=4:9:15... recompute: b common multiple of 9 and 3 is 9 already, so a:b=4:9, b:c=3:5 scaled to b=9 gives c=15. a:b:c=4:9:15. Note option (a) as listed (12:27:45) is the same ratio scaled ×3, so it is equivalent and correct.

50.(a) Geometric×2: 64×2=128.

51.(a) Geometric×2: 48×2=96.

52.(a) 400/8=50km/h.

53.(a) 35% of x=105→x=300.

54.(a) 4/5×25=20 litres.

55.(a) Inverse proportion: 12×10/8=15 days.

56.(a) HCF(15,25)=5.

57.(a) LCM(12,16)=48.

58.(a) Downstream speed=60/5=12km/h; still-water=12−2=10km/h.

59.(a) SP=500×0.88=₹440.

60.(a) Annual interest=6000−5500=500; principal=5500−2×500=4500.

61.(a) Sparrow is a bird; the rest are big cats.

62.(a) Each letter+1: G→H,R→S,A→B,P→Q,E→F=HSBQF.

63.(a) C, B's daughter, is A's daughter.

64.(a) "Some lawyers are politicians" doesn't necessarily follow.

65.(a) Differences 5,7,9,11: 27+11=38.

66.(a) 45 days=6 weeks+3 days; Monday+3=Thursday.

67.(a) Total=10+8−1=17.

68.(a) Fish:Sea :: Lion:Jungle.

69.(a) √(5²+12²)=13km.

70.(a) C, B's son, is A's nephew.

71.(a) Pattern ×2+1: 47×2+1=95.

72.(a) F-G-H matches the given consecutive clues.

73.(a) Each letter+1: M→N,O→P,U→V,S→T,E→F=NPVTF.

74.(a) 25−4=21 days=3 weeks exactly, same day: Wednesday.

75.(a) Carrot is a vegetable; the rest are flowers.

76.(a) At 4:00, hands are at 120°.

77.(a) Product pattern: 7×2=14.

78.(a) A, B's grandfather, is C's father (C being B's father).

79.(a) 55 is not a perfect square; 25,36,49 are.

80.(a) Carpenter:Wood :: Blacksmith:Metal.

81.(a) "Maintenance" is correctly spelled.

82.(a) "Thrifty" is a synonym of "frugal."

83.(a) "Lazy" is the antonym of "diligent."

84.(a) "Allergic to" is the correct preposition pairing.

85.(a) Correct comma placement in the list.

86.(a) Passive: "A new product was launched by the company."

87.(a) "Armoury" is a place where weapons are stored.

88.(a) "One" is singular, so "has," not "have," is correct.

89.(a) "To turn over a new leaf" means to start behaving better.

90.(a) "Succeeded in" is the correct preposition pairing.

91.(a) "Sheep" is unchanged in the plural.

92.(a) "Would you mind if I open the window?" is a natural polite request.

93.(a) "Frank" is a synonym of "candid."

94.(a) "Concise" is the antonym of "verbose."

95.(a) "News" is treated as singular, taking "is."

96.(a) "Hour" begins with a silent h (vowel sound), so "an hour" is correct.

97.(a) "Insolvent" means unable to pay one's debts.

98.(a) "The student finished the homework quickly" is correctly rearranged.

99.(a) "Reclusive" is the antonym of "gregarious."

100.(a) "Not only...but also" agreement follows the nearer subject ("friends," plural), taking "were."