বাংলাদেশ ব্যাংক অফিসার (জেনারেল) ২০১৯: প্রশ্ন সমাধান ও ব্যাখ্যা

1. Choose the right phrase to fill the blank to complete the following sentence about phrase to fill the blanks _____ the chairman at the banquet.

(a) on the basis of (b) on behalf of (c) on the strength of (d) on behalf with

Answer: (b) on behalf of

Explanation: ‘On behalf of’ = as a representative.

2. Choose the correct preposition: They are seated _____ the front row.

(a) at (b) in (c) on (d) by

Answer: (b) in

Explanation: ‘Seated in the front row’ — standard collocation.

3. ‘Seat’ in the sentence ‘seat at the head of the table’ is used as a/an —

(a) noun (b) verb (c) adverb (d) participle

Answer: (a) noun

Explanation: ‘Seat’ here refers to the place/object.

4. The set of operations to be performed by the management committee —

(a) go (b) goes (c) is going (d) are going

Answer: (b) goes

Explanation: Singular subject ‘set’ takes singular verb ‘goes’.

5. Idiom: ‘To remind someone of something’ —

(a) Cambridge Dictionary (b) Remind (Verb) (c) English Wizard Grammar (d) Notify

Answer: (b) Remind (Verb)

Explanation: ‘Remind’ — verb meaning to cause to remember.

6. Choose the synonym of ‘BREVITY’ —

(a) Conciseness (b) Length (c) Elaboration (d) Verbosity

Answer: (a) Conciseness

Explanation: ‘Brevity’ = conciseness.

7. Antonym of ‘EPHEMERAL’ —

(a) Eternal (b) Brief (c) Transient (d) Momentary

Answer: (a) Eternal

Explanation: ‘Ephemeral’ (short-lived) ↔ ‘eternal’.

8. ‘Mecca’ is famous for —

(a) Religious (b) Trade (c) Education (d) Tourism

Answer: (a) Religious

Explanation: Mecca is the holiest city of Islam.

9. ‘A’ as a/an —

(a) article (b) noun (c) verb (d) adverb

Answer: (a) article

Explanation: ‘A’ is indefinite article.

10. ‘Postscript’ means —

(a) Before script (b) After script (c) Without script (d) Sub-script

Answer: (b) After script

Explanation: ‘Post-’ = after; postscript = added after letter.

11. ‘At a loose end’ means —

(a) Unemployed (b) Confused (c) Sad (d) Lost

Answer: (a) Unemployed

Explanation: Idiom: ‘at a loose end’ = without occupation/idle.

12. ‘Magnum opus’ —

(a) Major work (b) Minor work (c) Easy work (d) Hard work

Answer: (a) Major work

Explanation: ‘Magnum opus’ — greatest/most important work.

13. Plural of ‘mouse’ —

(a) mouses (b) mice (c) mooses (d) mices

Answer: (b) mice

Explanation: Irregular plural: mouse → mice.

14. Find the meaning of ‘RECONCILE’ —

(a) Restore harmony (b) Conflict (c) Misunderstand (d) Argue

Answer: (a) Restore harmony

Explanation: ‘Reconcile’ = restore friendly relations.

15. Choose the correct passive: ‘They will help us.’

(a) We will be helped by them (b) We are helped by them (c) We are being helped by them (d) Us will be helped

Answer: (a) We will be helped by them

Explanation: Future simple passive: will + be + past participle.

16. Direct/indirect: He said, ‘I am happy.’

(a) He said that he was happy (b) He said he is happy (c) He told he is happy (d) He told that I am happy

Answer: (a) He said that he was happy

Explanation: Indirect: pronoun shift, tense backshift.

17. ‘Inevitable’ means —

(a) Avoidable (b) Unavoidable (c) Visible (d) Likely

Answer: (b) Unavoidable

Explanation: ‘Inevitable’ = cannot be avoided.

18. Synonym of ‘BOISTEROUS’ —

(a) Quiet (b) Lively (c) Calm (d) Subdued

Answer: (b) Lively

Explanation: ‘Boisterous’ = noisy and energetic.

19. Choose correctly spelled: (a) Acommodate (b) Accommodate (c) Accomodate (d) Acomodate

Answer: (b) Accommodate

Explanation: ‘Accommodate’ — double c, double m.

20. Antonym of ‘OBSOLETE’ —

(a) Modern (b) Outdated (c) Old (d) Stale

Answer: (a) Modern

Explanation: ‘Obsolete’ ↔ ‘modern/current’.

21. If they cross each other if their speeds are 38km per hour and 37km per hour?

(a) 4 hours (b) 3 hours (c) 5 hours (d) 6 hours

Answer: (a) 3 hours (per published key (a))

Explanation: Calculation based on relative speed and given distance.

22. A and B can together complete a piece of work in 4 days. If A alone can complete the same work in 12 days, how many days will B alone take to complete the same work?

(a) 4 days (b) 5 days (c) 6 days (d) 7 days

Answer: (c) 6 days

Explanation: 1/B = 1/4 − 1/12 = (3−1)/12 = 2/12 ⇒ B = 6.

23. Nikki is 25% more efficient than Tina. Tina alone can build a craft in 20 days. Find the number of days taken by Nikki to finish the same piece of work?

(a) 16 (b) 17 (c) 18 (d) 19

Answer: (a) 16

Explanation: Nikki’s rate = 1.25 × (1/20); time = 20/1.25 = 16 days.

24. A man can reach a certain place in 40 hours. If he reduces his speed by 1/15th, he goes 5 km less in that time. Find the total distance covered by him.

(a) 60 km (b) 70 km (c) 80 km (d) 90 km

Answer: (a) 60 km

Explanation: Distance = original speed × time; reduced 1/15 ⇒ 5 km less. Solution gives 60 km.

25. A man purchases two clocks A and B at a total cost of Tk. 650. He sells A with a 20% profit and B at a loss of 25%. What are the purchasing prices of A and B?

(a) 225, 425 (b) 275, 375 (c) 300, 350 (d) 250, 400

Answer: (d) 250, 400

Explanation: 1.2a = 0.75b; a+b=650 ⇒ a=250, b=400.

26. A man covers a certain distance at a rate of 20 miles an hour and returns at the rate of 30 miles an hour. What is his average speed?

(a) 24 mph (b) 25 mph (c) 26 mph (d) 27 mph

Answer: (a) 24 mph

Explanation: Harmonic mean = 2×20×30/(20+30) = 24.

27. The sum of two numbers is 50 and their difference is 10. Find them.

(a) 30, 20 (b) 25, 25 (c) 35, 15 (d) 40, 10

Answer: (a) 30, 20

Explanation: Solve: a+b=50, a−b=10 ⇒ a=30, b=20.

28. The price of a book is reduced by 20%. The new price is Tk. 240. The original price was —

(a) Tk. 280 (b) Tk. 300 (c) Tk. 320 (d) Tk. 250

Answer: (b) Tk. 300

Explanation: 0.8x = 240 ⇒ x = 300.

29. A train 200m long passes a pole in 20 seconds. Find its speed in km/hr.

(a) 30 (b) 36 (c) 40 (d) 50

Answer: (b) 36

Explanation: 200/20 = 10 m/s = 36 km/hr.

30. If x − y = 3 and x² − y² = 27, find x + y.

(a) 7 (b) 8 (c) 9 (d) 10

Answer: (c) 9

Explanation: x² − y² = (x+y)(x−y) ⇒ 27 = (x+y)×3 ⇒ x+y = 9.

31. The L.C.M. of 8, 12, 16 —

(a) 48 (b) 64 (c) 96 (d) 144

Answer: (a) 48

Explanation: LCM(8,12,16) = 48.

32. 75% of 200 = ?

(a) 150 (b) 125 (c) 100 (d) 175

Answer: (a) 150

Explanation: 0.75 × 200 = 150.

33. A man’s salary is increased by 20%. The new salary is Tk. 24,000. The original salary was —

(a) Tk. 20,000 (b) Tk. 22,000 (c) Tk. 18,000 (d) Tk. 19,000

Answer: (a) Tk. 20,000

Explanation: 1.2x = 24000 ⇒ x = 20000.

34. If the radius of a sphere is 6 cm, find its volume.

(a) 288π cm³ (b) 144π cm³ (c) 216π cm³ (d) 432π cm³

Answer: (a) 288π cm³

Explanation: V = (4/3)π r³ = (4/3)π × 216 = 288π.

35. The simple interest on Tk. 2,000 for 3 years at 5% p.a. is —

(a) Tk. 250 (b) Tk. 300 (c) Tk. 350 (d) Tk. 200

Answer: (b) Tk. 300

Explanation: SI = 2000×5×3/100 = 300.

36. A cube has edge 5 cm. Find total surface area.

(a) 125 cm² (b) 150 cm² (c) 200 cm² (d) 250 cm²

Answer: (b) 150 cm²

Explanation: 6 × 5² = 150 cm².

37. Find x: 3x − 7 = 2x + 5.

(a) 10 (b) 11 (c) 12 (d) 13

Answer: (c) 12

Explanation: 3x − 2x = 5 + 7 ⇒ x = 12.

38. A boat goes 12 km upstream in 4 hours. The stream is 1 km/hr. Find boat’s still-water speed.

(a) 4 km/hr (b) 5 km/hr (c) 6 km/hr (d) 7 km/hr

Answer: (a) 4 km/hr

Explanation: Upstream speed = 12/4 = 3; still water = 3+1 = 4 km/hr.

39. Average of 6 numbers is 25. If one is added, average becomes 30. The added number is —

(a) 50 (b) 60 (c) 65 (d) 55

Answer: (b) 60

Explanation: Sum 6 = 150; sum 7 = 210; added = 60.

40. (2+√3)² = ?

(a) 4 + 4√3 + 3 (b) 7 + 4√3 (c) 5 + 4√3 (d) Both (a) and (b)

Answer: (d) Both (a) and (b)

Explanation: 4 + 4√3 + 3 = 7 + 4√3.

41. The product of two numbers is 24 and one is 8. Find the other.

(a) 3 (b) 4 (c) 5 (d) 6

Answer: (a) 3

Explanation: 24/8 = 3.

42. 5 × (3+4) = ?

(a) 27 (b) 35 (c) 25 (d) 30

Answer: (b) 35

Explanation: 5 × 7 = 35.

43. If a man borrows Tk. 5,000 at 6% simple interest for 4 years, what is the total interest?

(a) Tk. 1,200 (b) Tk. 1,300 (c) Tk. 1,500 (d) Tk. 1,100

Answer: (a) Tk. 1,200

Explanation: 5000×6×4/100 = 1200.

44. If sin θ = 3/5, find cos θ.

(a) 4/5 (b) 3/4 (c) 5/4 (d) 2/5

Answer: (a) 4/5

Explanation: cos²θ = 1 − sin²θ = 1 − 9/25 = 16/25 ⇒ cosθ = 4/5.

45. The percentage of decrease from 80 to 60 is —

(a) 20% (b) 25% (c) 30% (d) 33%

Answer: (b) 25%

Explanation: (80−60)/80 × 100 = 25%.

46. If 5 books cost Tk. 200, find cost of 12 books.

(a) Tk. 400 (b) Tk. 480 (c) Tk. 500 (d) Tk. 600

Answer: (b) Tk. 480

Explanation: 200/5 × 12 = 40 × 12 = 480.

47. The square of 17 is —

(a) 289 (b) 261 (c) 280 (d) 290

Answer: (a) 289

Explanation: 17² = 289.

48. If 4 men can do a work in 30 days, 6 men can do in —

(a) 15 days (b) 20 days (c) 25 days (d) 22 days

Answer: (b) 20 days

Explanation: 4 × 30 = 6 × D ⇒ D = 20.

49. Profit = 25%. Cost = Tk. 200. Selling price?

(a) Tk. 225 (b) Tk. 250 (c) Tk. 275 (d) Tk. 300

Answer: (b) Tk. 250

Explanation: 200 × 1.25 = 250.

50. (10² − 9²) = ?

(a) 18 (b) 19 (c) 20 (d) 21

Answer: (b) 19

Explanation: 100 − 81 = 19.

51. ‘Mujibnagar Government’ was formed on —

(a) 10 April 1971 (b) 17 April 1971 (c) 26 March 1971 (d) 16 December 1971

Answer: (a) 10 April 1971

Explanation: Mujibnagar Government formed 10 April 1971; took oath 17 April.

52. ‘Operation Searchlight’ was launched on —

(a) 25 March 1971 (b) 7 March 1971 (c) 26 March 1971 (d) 16 December 1971

Answer: (a) 25 March 1971

Explanation: Pakistani army launched Operation Searchlight night of 25 March 1971.

53. Bangabandhu’s home district is —

(a) Gopalganj (b) Tungipara (c) Faridpur (d) Both A & B

Answer: (d) Both A & B

Explanation: Tungipara is in Gopalganj district.

54. The Asian Development Bank is headquartered in —

(a) Manila (b) Tokyo (c) Bangkok (d) Singapore

Answer: (a) Manila

Explanation: ADB HQ — Manila, Philippines.

55. The currency of Singapore is —

(a) Singapore Dollar (b) Ringgit (c) Yuan (d) Won

Answer: (a) Singapore Dollar

Explanation: SGD = Singapore Dollar.

56. ‘Padma River’ originates from —

(a) Tibet (b) China (c) India (d) Bangladesh

Answer: (c) India

Explanation: Padma is Bangladesh’s segment of the Ganges, originating from the Himalayas (India).

57. The capital of New Zealand is —

(a) Wellington (b) Auckland (c) Christchurch (d) Hamilton

Answer: (a) Wellington

Explanation: Wellington is the capital of New Zealand.

58. ‘Doctors Without Borders’ founded in —

(a) France (b) UK (c) USA (d) Switzerland

Answer: (a) France

Explanation: Médecins Sans Frontières founded in France, 1971.

59. The largest bay in the world is —

(a) Bay of Bengal (b) Hudson Bay (c) Bay of Biscay (d) Persian Gulf

Answer: (a) Bay of Bengal

Explanation: Bay of Bengal — world’s largest bay (~2,172,000 km²).

60. ‘Tiananmen Square’ is in —

(a) Tokyo (b) Beijing (c) Seoul (d) Shanghai

Answer: (b) Beijing

Explanation: Tiananmen Square is in Beijing, China.

61. The Bangladesh constitution was adopted on —

(a) 4 November 1972 (b) 16 December 1972 (c) 26 March 1972 (d) 14 December 1972

Answer: (a) 4 November 1972

Explanation: Constituent Assembly adopted Constitution on 4 November 1972.

62. ‘Bangabandhu’ title was bestowed on Sheikh Mujib in —

(a) 23 February 1969 (b) 7 March 1971 (c) 21 February 1952 (d) 16 December 1971

Answer: (a) 23 February 1969

Explanation: Title given at Race Course Maidan rally on 23 Feb 1969.

63. ‘Kashmir issue’ is between —

(a) India and Pakistan (b) India and China (c) Pakistan and China (d) India and Bangladesh

Answer: (a) India and Pakistan

Explanation: Kashmir dispute primarily between India and Pakistan.

64. The Reserve Bank of India is in —

(a) Delhi (b) Mumbai (c) Kolkata (d) Chennai

Answer: (b) Mumbai

Explanation: RBI headquartered in Mumbai.

65. The Bangabandhu Bridge is built on —

(a) Jamuna (b) Padma (c) Meghna (d) Brahmaputra

Answer: (a) Jamuna

Explanation: Bangabandhu (Jamuna) Bridge spans the Jamuna River.

66. ‘Aesop’s Fables’ is a collection of —

(a) Stories (b) Poems (c) Essays (d) Novels

Answer: (a) Stories

Explanation: Aesop’s Fables — collection of moral stories.

67. ‘International Women’s Day’ is observed on —

(a) 8 March (b) 14 March (c) 5 June (d) 21 February

Answer: (a) 8 March

Explanation: International Women’s Day — 8 March.

68. ‘Bangabandhu-1’ is a —

(a) Satellite (b) Aircraft (c) Ship (d) Spacecraft

Answer: (a) Satellite

Explanation: Bangabandhu-1 is Bangladesh’s first geostationary communications satellite.

69. Bangladesh Election Commission is established under Article —

(a) 116 (b) 118 (c) 119 (d) 120

Answer: (b) 118

Explanation: Article 118 of the Constitution establishes the Election Commission.

70. The first Five Year Plan was launched in —

(a) 1973 (b) 1972 (c) 1971 (d) 1974

Answer: (a) 1973

Explanation: Bangladesh’s 1st Five Year Plan: 1973-1978.

৭১. বাংলা ভাষার আদি কবি কে?

(ক) ভুসুকুপা (খ) কাহ্নপা (গ) লুইপা (ঘ) সরহপা

উত্তর: (গ) লুইপা

ব্যাখ্যা: চর্যাপদের আদি কবি লুইপা।

৭২. ‘শ্রীকৃষ্ণকীর্তন’ কাব্যের রচয়িতা —

(ক) চণ্ডীদাস (খ) বড়ু চণ্ডীদাস (গ) বিদ্যাপতি (ঘ) মুকুন্দরাম

উত্তর: (খ) বড়ু চণ্ডীদাস

ব্যাখ্যা: ‘শ্রীকৃষ্ণকীর্তন’ বড়ু চণ্ডীদাসের রচনা; মধ্যযুগের প্রথম বাংলা কাব্যগ্রন্থ।

৭৩. বাংলা ভাষায় সর্বপ্রথম রচিত মঙ্গলকাব্য —

(ক) মনসামঙ্গল (খ) চণ্ডীমঙ্গল (গ) ধর্মমঙ্গল (ঘ) অন্নদামঙ্গল

উত্তর: (ক) মনসামঙ্গল

ব্যাখ্যা: মনসামঙ্গল — মঙ্গলকাব্যের সর্বাদি ধারা।

৭৪. ‘গাছের চারাকে কী বলে?’

(ক) উপাঙ্গ (খ) ক্ষুপ (গ) মুকুল (ঘ) পত্রিকা

উত্তর: (খ) ক্ষুপ

ব্যাখ্যা: ‘ক্ষুপ’ অর্থ গাছের চারা।

৭৫. সাধু ভাষার বৈশিষ্ট্য নয় কোনটি?

(ক) সর্বনাম দীর্ঘতর (খ) ক্রিয়াপদ দীর্ঘ (গ) সংলাপের উপযোগী (ঘ) তৎসম শব্দপ্রধান

উত্তর: (গ) সংলাপের উপযোগী

ব্যাখ্যা: সাধু ভাষা সাধারণত সংলাপের অনুপযোগী।

৭৬. ‘চয়ন’ অর্থ —

(ক) সংগ্রহ (খ) ত্যাগ (গ) ক্ষয় (ঘ) ক্রয়

উত্তর: (ক) সংগ্রহ

ব্যাখ্যা: ‘চয়ন’ মানে নির্বাচন/সংগ্রহ।

৭৭. ‘সদ্য’ এর বিপরীত —

(ক) আগের (খ) পুরাতন (গ) প্রাচীন (ঘ) সবগুলো

উত্তর: (ঘ) সবগুলো

ব্যাখ্যা: ‘সদ্য’ = এখনই; বিপরীত প্রাচীন/পুরাতন/আগের।

৭৮. ‘নৈবেদ্য’ কোন ধরনের রচনা?

(ক) কাব্যগ্রন্থ (খ) উপন্যাস (গ) ছোটগল্প (ঘ) নাটক

উত্তর: (ক) কাব্যগ্রন্থ

ব্যাখ্যা: ‘নৈবেদ্য’ রবীন্দ্রনাথের কাব্যগ্রন্থ (১৯০১)।

৭৯. ‘অহি-নকুল সম্বন্ধ’ — কী?

(ক) মিত্রতা (খ) চিরশত্রুতা (গ) সমতা (ঘ) পরিবার

উত্তর: (খ) চিরশত্রুতা

ব্যাখ্যা: ‘অহি-নকুল’ (সাপ-নকুল) — শত্রুতার প্রতীক।

৮০. ‘পাখি ডাকে’ — এ বাক্যে ‘ডাকে’ কোন কাল?

(ক) বর্তমান (খ) অতীত (গ) ভবিষ্যৎ (ঘ) সাধারণ বর্তমান

উত্তর: (ঘ) সাধারণ বর্তমান

ব্যাখ্যা: ‘ডাকে’ সাধারণ বর্তমান কালের ক্রিয়া।