রূপালী ব্যাংক সিনিয়র অফিসার ২০১৯: প্রশ্ন সমাধান ও ব্যাখ্যা

1. Questions (1-5): Read the following sentences and select the option that corrects the underlined section. There are not many men who are so famous that they are frequently referred to by their short names only.

(a) signatures (b) initials (c) pictures (d) middle names

Answer: (b) initials

Explanation: 'Initials' means the first letters of a person's names, often used to refer to someone briefly and famously (e.g., 'CR7' for Cristiano Ronaldo, 'SRK' for Shah Rukh Khan). The underlined phrase 'short names' should be replaced with 'initials' to convey this meaning correctly.

2. We demonstrated to them how we were prepared the artistic patterns.

(a) are prepared (b) have prepared (c) had prepared (d) are preparing

Answer: (c) had prepared

Explanation: The main verb 'demonstrated' is in the past tense, so the action being described (preparing the patterns) must have happened before the demonstration — this calls for the Past Perfect Tense. Also, 'prepared' here is used actively (we prepared something), not passively, so 'were prepared' is wrong. The correct form is 'We demonstrated to them how we had prepared the artistic patterns.'

3. By such time you finish that chapter, I will write a letter.

(a) By the time (b) The time when (c) By that time (d) The time

Answer: (a) By the time

Explanation: 'By such time' is not an acceptable English expression. The correct fixed phrase meaning 'at or before the time when' is 'by the time', as in: 'By the time you finish that chapter, I will write a letter.'

4. She cooks, washes dishes, does her homework and then relaxing.

(a) relaxing then (b) then is relaxing (c) relaxing is then (d) then relaxes

Answer: (d) then relaxes

Explanation: The subject 'She' is third person singular, so every verb in this list of parallel actions must agree in form — cooks, washes, does, and (then) relaxes. 'Then relaxing' breaks this parallel structure and must be corrected to 'then relaxes'.

5. One of the most significant phenomenons of our time has been the development of cinema.

(a) phenomenon (b) phenomena (c) phenomenonna (d) phenomenonins

Answer: (b) phenomena

Explanation: Following the structure 'One of the + superlative + plural noun + singular verb', the noun after 'most significant' must be plural. 'Phenomenon' is a Greek-origin word whose irregular plural is 'phenomena' (not 'phenomenons'), so the correct form is 'phenomena'.

6. Questions (6-10): Select the word or phrase which best expresses the meaning of the given word. VORACIOUS

(a) Hungry (b) Wild (c) Angry (d) Quick

Answer: (a) Hungry

Explanation: 'Voracious' means having a very eager approach to an activity, especially eating — extremely hungry or greedy for food. Among the options, 'Hungry' is the closest match.

7. ADMONISH

(a) Punish (b) Reprimand (c) Curse (d) Dismiss

Answer: (b) Reprimand

Explanation: 'Admonish' means to warn or scold someone firmly but not harshly, i.e., to 'reprimand'. It is milder than 'punish', 'curse', or 'dismiss'.

8. RECKLESS

(a) Courageous (b) Bold (c) Daring (d) Rash

Answer: (d) Rash

Explanation: 'Reckless' means acting without thinking about the consequences or dangers of one's actions — synonymous with 'rash'. 'Courageous', 'bold', and 'daring' carry a more positive sense of bravery, whereas 'reckless' implies careless disregard for safety.

9. WRETCHED

(a) Foolish (b) Insane (c) Poor (d) Strained

Answer: (c) Poor

Explanation: 'Wretched' means in a very unhappy, unfortunate, or miserable state (often due to poverty or misfortune). 'Poor' (in the sense of pitiable/miserable) is the closest synonym here.

10. RESTRAINT

(a) Restriction (b) Repression (c) Obstacle (d) Hindrance

Answer: (a) Restriction

Explanation: 'Restraint' means a measure or condition that keeps something under control or within limits, i.e., a 'restriction'. 'Repression', 'obstacle', and 'hindrance' carry different connotations (suppression, or something blocking progress) and are less precise matches.

11. Questions (11-16): Fill in the blank with the right option. _____ Google and Facebook, as the largest platforms for content distribution, are said to be _____ systems that will filter fake news.

(a) Overall, bearing (b) Neither, facilitating (c) Each, viewing (d) Both, creating

Answer: (d) Both, creating

Explanation: Since the sentence refers to two named platforms (Google and Facebook) together, 'Both' correctly introduces them as a pair. 'Creating' fits the sense that these two platforms are together building/developing systems to filter fake news.

12. Laughter has a strong social _____ in bonding groups of people together and also helps make the message more _____.

(a) function, relatable (b) resolution, clear (c) mobility, harmful (d) intensity, plain

Answer: (a) function, relatable

Explanation: 'Function' fits naturally with 'social' (a social function/role), and 'relatable' fits the idea that laughter makes a message easier for people to connect with — both options in (a) fit the context logically and grammatically better than the other pairs.

13. The _____ of fake news is not new or recent, only its potential to reach people has _____ due to online platforms and applications that are free.

(a) arrival, declined (b) insurance, purged (c) advent, amplified (d) news, roughened

Answer: (c) advent, amplified

Explanation: 'Advent' means the arrival or emergence of something (fitting 'the advent of fake news'), and 'amplified' means increased or magnified — fitting the idea that free online platforms have magnified fake news's reach. The other word pairs do not fit the sentence's meaning.

14. The traditional practices of yoga lay great _____ on the importance of _____ in the form of pranayama.

(a) stress, exercise (b) emphasis, breathing (c) faith, controlling (d) motion, body

Answer: (b) emphasis, breathing

Explanation: 'Lay great emphasis on' is the standard collocation (not 'lay stress on the importance of', which is redundant/awkward here). 'Pranayama' specifically refers to breath control exercises in yoga, so 'breathing' is the fitting second word.

15. Special _____ are made for their meals, but officials _____ the long working hours without any overtime.

(a) proposals, due (b) parties, view (c) rules, mew (d) arrangements, rue

Answer: (d) arrangements, rue

Explanation: 'Arrangements are made for meals' is the natural collocation. 'Rue' means to bitterly regret or resent something — fitting the idea that officials resent working long hours without overtime pay.

16. Fate smiles _____ those who untiringly grapple with stark realities of life.

(a) on (b) with (c) round (d) over

Answer: (a) on

Explanation: The fixed idiomatic expression is 'fortune/fate smiles on someone', meaning that fate favours them. Hence the correct preposition is 'on'.

১৭. কোনগুলো দেশী শব্দ?

(ক) হস্ত, মস্তক (খ) গিন্নী, গতর (গ) ডাগর, ঢেঁকি (ঘ) চাঁদ, ভাত

উত্তর: (গ) ডাগর, ঢেঁকি

ব্যাখ্যা: সংস্কৃত/আর্য ভাষা বাংলায় প্রবেশের আগে থেকেই এ অঞ্চলে প্রচলিত মূল অধিবাসীদের (অস্ট্রিক, দ্রাবিড় প্রভৃতি) ভাষা থেকে আগত শব্দকে দেশী শব্দ বলে। 'ডাগর' (বড়, প্রশস্ত) ও 'ঢেঁকি' (ধান ভাঙার যন্ত্র) — উভয়ই দেশী শব্দের সুপরিচিত উদাহরণ। হস্ত-মস্তক তৎসম শব্দ, চাঁদ-ভাত তদ্ভব শব্দ।

১৮. বিধি শব্দটির বিপরীত শব্দ কোনটি?

(ক) নিষেধ (খ) বহৎ (গ) ক্ষুদ্র (ঘ) অধিক

উত্তর: (ক) নিষেধ

ব্যাখ্যা: 'বিধি' অর্থ নিয়ম বা করণীয় কাজ, আর 'নিষেধ' অর্থ বারণ বা অকরণীয় কাজ। তাই এই দুটি একে অপরের বিপরীতার্থক শব্দ — একত্রে ব্যবহৃত 'বিধি-নিষেধ' শব্দবন্ধেও এই বৈপরীত্য স্পষ্ট।

১৯. সূর্য শব্দটির বিপরীত শব্দ কোনটি?

(ক) তপন (খ) পবন (গ) কানন (ঘ) কোনটিই না

উত্তর: (ঘ) কোনটিই না

ব্যাখ্যা: 'তপন' আসলে সূর্যেরই সমার্থক শব্দ (প্রতিশব্দ), বিপরীত শব্দ নয়। 'পবন' (বায়ু) ও 'কানন' (বন) সূর্যের সাথে অর্থগতভাবে সম্পর্কহীন। যেহেতু 'সূর্য' শব্দের বাংলায় সরাসরি কোনো প্রতিষ্ঠিত বিপরীত শব্দ নেই, তাই সঠিক উত্তর 'কোনটিই না'।

২০. Referendum শব্দটির বাংলা পারিভাষিক কি?

(ক) সংশোধন (খ) গণভোট (গ) পরিমার্জন (ঘ) মধ্যস্থতা

উত্তর: (খ) গণভোট

ব্যাখ্যা: Referendum-এর প্রতিষ্ঠিত বাংলা পারিভাষিক শব্দ 'গণভোট' — অর্থাৎ কোনো গুরুত্বপূর্ণ জাতীয় বিষয়ে সরাসরি জনগণের মতামত (হ্যাঁ/না ভোট) গ্রহণের প্রক্রিয়া।

২১. কোন সন্ধিটি নিপাতনে সিদ্ধ?

(ক) পর্ + পর = পরস্পর (খ) বাক্ + দান = বাগদান (গ) উৎ + ছেদ = উচ্ছেদ (ঘ) সম্ + সার = সংসার

উত্তর: (ক) পর্ + পর = পরস্পর

ব্যাখ্যা: যেসব সন্ধি নির্দিষ্ট কোনো ব্যাকরণিক নিয়ম মেনে না হয়ে বিশেষ প্রথায় সিদ্ধ হয়, তাকে নিপাতনে সিদ্ধ সন্ধি বলে। 'পর্ + পর = পরস্পর' এমনই একটি ব্যতিক্রমী সন্ধি। বাকি অপশনগুলো (বাক্+দান, উৎ+ছেদ, সম্+সার) নির্দিষ্ট ব্যঞ্জনসন্ধির নিয়ম মেনেই গঠিত হয়েছে।

২২. কোনটি শুদ্ধ বানান?

(ক) মুর্ধণ (খ) মুর্ধন্য (গ) মুর্ধণ্য (ঘ) মূর্ধন্য

উত্তর: (ঘ) মূর্ধন্য

ব্যাখ্যা: ধ্বনিতত্ত্বে জিহ্বার অগ্রভাগ মূর্ধা স্পর্শ করে উচ্চারিত বর্ণকে (যেমন ট, ঠ, ড, ঢ, ণ, ষ) 'মূর্ধন্য বর্ণ' বলা হয়। শব্দটির শুদ্ধ বানান 'মূর্ধন্য' (দীর্ঘ ঊ-কার ও ণত্ব বিধান অনুসারে ন্য), অন্য বানানগুলো ভুল রূপ।

২৩. দামিনী শব্দের অর্থ কি?

(ক) বারি (খ) বিদ্যুৎ (গ) জলধি (ঘ) ধরিত্রী

উত্তর: (খ) বিদ্যুৎ

ব্যাখ্যা: 'দামিনী' একটি কাব্যিক/তৎসম শব্দ, যার অর্থ বিদ্যুৎ বা বিজলি। বারি অর্থ জল, জলধি অর্থ সমুদ্র এবং ধরিত্রী অর্থ পৃথিবী।

২৪. ভূষণ্ডির কাক অর্থ কি?

(ক) ষড়যন্ত্রকারী (খ) বাক সর্বস্ব (গ) দীর্ঘায়ু ব্যক্তি (ঘ) দীর্ঘ প্রত্যক্ষমাণ

উত্তর: (গ) দীর্ঘায়ু ব্যক্তি

ব্যাখ্যা: পুরাণ-কাহিনি অনুসারে ভূষণ্ডি নামক পর্বতের এক অতি দীর্ঘজীবী কাক-এর কথা কথিত আছে, যে বহু যুগ ধরে বেঁচে ছিল। এই থেকেই 'ভূষণ্ডির কাক' প্রবাদটি অতি দীর্ঘায়ু ব্যক্তিকে বোঝাতে ব্যবহৃত হয়।

২৫. কোন কবি নিজেকে বাঙালি বলে পরিচয় দিয়েছেন?

(ক) ভুসুকুপা (খ) গোবিন্দ দাস (গ) কাহ্নপা (ঘ) কায়কোবাদ

উত্তর: (ক) ভুসুকুপা

ব্যাখ্যা: চর্যাপদের অন্যতম কবি ভুসুকুপা তাঁর একটি পদে লিখেছেন, 'আজি ভুসু বাঙালী ভইলী' (আজ ভুসুকু বাঙালি হলো) — বাংলা সাহিত্যে এটিই কবির নিজেকে সরাসরি 'বাঙালি' পরিচয়ে উল্লেখ করার প্রাচীনতম ও উল্লেখযোগ্য দৃষ্টান্ত।

২৬. কোনটি ঈষৎ অর্থে অব্যয়ীভাব সমাস?

(ক) আজীবন (খ) আগাছা (গ) আরক্তিম (ঘ) আলুনী

উত্তর: (গ) আরক্তিম

ব্যাখ্যা: আরক্তিম = ঈষৎ রক্তিম (কিছুটা লালচে)। এখানে 'আ' উপসর্গ ঈষৎ (সামান্য/কিছুটা) অর্থ প্রকাশ করছে বলে এটি অব্যয়ীভাব সমাসের উদাহরণ। আজীবন (সমগ্র জীবন ব্যাপিয়া), আগাছা (অপ্রয়োজনীয় গাছ) ও আলুনী (লবণ নেই এমন) এখানে 'আ' ভিন্ন অর্থে ব্যবহৃত।

২৭. রূপক কর্মধারয় সমাসের উদাহরণ কোনটি?

(ক) জলযান (খ) মনমাঝি (গ) সিংহদ্বার (ঘ) একাদশ

উত্তর: (খ) মনমাঝি

ব্যাখ্যা: যে কর্মধারয় সমাসে উপমান ও উপমেয়ের মধ্যে অভেদ কল্পনা করা হয়, তাকে রূপক কর্মধারয় সমাস বলে। মনমাঝি = মন রূপ মাঝি — এখানে মনকে মাঝির সাথে অভিন্নভাবে রূপায়িত করা হয়েছে, যা রূপক কর্মধারয়ের উৎকৃষ্ট উদাহরণ।

২৮. ব্যাকরণের প্রধান কাজ হচ্ছে-

(ক) ভাষার নিয়ম প্রতিষ্ঠা (খ) ভাষার শৃঙ্খলা (গ) ভাষার উন্নতি (ঘ) ভাষার বিশ্লেষণ

উত্তর: (ঘ) ভাষার বিশ্লেষণ

ব্যাখ্যা: ব্যাকরণ কোনো ভাষার নিয়ম তৈরি করে না বা ভাষাকে শাসন করে না, বরং প্রচলিত ভাষার ধ্বনি, শব্দ, বাক্য গঠনের নিয়মগুলো পর্যবেক্ষণ ও বিশ্লেষণ করে বর্ণনা করে। তাই ব্যাকরণের প্রধান কাজ হলো ভাষার বিশ্লেষণ।

২৯. কোনটি তৎসম শব্দ?

(ক) কলম (খ) চন্দন (গ) ফুল (ঘ) বাড়ি

উত্তর: (খ) চন্দন

ব্যাখ্যা: যেসব সংস্কৃত শব্দ কোনো পরিবর্তন ছাড়াই অবিকৃতভাবে বাংলা ভাষায় ব্যবহৃত হয়, তাকে তৎসম শব্দ বলে। 'চন্দন' একটি খাঁটি সংস্কৃত/তৎসম শব্দ। 'কলম' আরবি-ফারসি শব্দ, 'ফুল' ও 'বাড়ি' তদ্ভব/দেশী শব্দ।

৩০. পেয়ারা কোন ভাষা থেকে আগত শব্দ?

(ক) হিন্দি (খ) উর্দু (গ) পর্তুগিজ (ঘ) গ্রিস

উত্তর: (গ) পর্তুগিজ

ব্যাখ্যা: 'পেয়ারা' (guava ফল) শব্দটি পর্তুগিজ বণিকদের মাধ্যমে বাংলায় প্রবেশ করে, যেমন আলমারি, চাবি, আনারস, বালতি প্রভৃতি অন্যান্য পর্তুগিজ শব্দও একই পথে বাংলায় এসেছে।

৩১. 'ভাষা মানুষের মুখ থেকে কলমের মুখে আসে, উল্টোটা করতে গেলে মুখে শুধু কালি পড়ে' — কে বলেছেন?

(ক) প্রমথ চৌধুরী (খ) কাজী নজরুল ইসলাম (গ) রবীন্দ্রনাথ ঠাকুর (ঘ) বলাইচাঁদ মুখোপাধ্যায়

উত্তর: (ক) প্রমথ চৌধুরী

ব্যাখ্যা: প্রাবন্ধিক প্রমথ চৌধুরী চলিত ভাষারীতির অন্যতম প্রধান প্রবক্তা ছিলেন এবং কথ্য ভাষার স্বাভাবিকতাকেই লেখ্য গদ্যের ভিত্তি হিসেবে সমর্থন করে এই উক্তিটি করেন — অর্থাৎ মুখের ভাষাকেই লেখার ভাষায় রূপান্তর করা উচিত, উল্টোটা (কৃত্রিম সাধু ভাষাকে মুখে বসানো) নয়।

৩২. কোন প্রবচনটি হতভাগ্য অর্থে ব্যবহৃত?

(ক) উড়নচণ্ডী (খ) ছা-পোষা (গ) আট কপালে (ঘ) কোনটিই না

উত্তর: (গ) আট কপালে

ব্যাখ্যা: 'আট কপালে' একটি প্রচলিত বাগ্‌ধারা, যার অর্থ অতি দুর্ভাগা বা হতভাগ্য ব্যক্তি। 'উড়নচণ্ডী' অর্থ উড়নচণ্ডী স্বভাবের (অমিতব্যয়ী) মানুষ, আর 'ছা-পোষা' অর্থ সংসারের ভারে জর্জরিত সাধারণ মানুষ।

33. In still water, a boat can travel at 5 km/hr. It takes 1 hour to row to a place and come back. If the velocity of the stream is 1 km/hr, how far is the place?

(a) 2.4 km (b) 1.5 km (c) 2.6 km (d) None of these

Answer: (a) 2.4 km

Explanation: Downstream speed = 5+1 = 6 km/hr; upstream speed = 5-1 = 4 km/hr. Let distance = d. Total time: d/6 + d/4 = 1 → (2d+3d)/12 = 1 → 5d/12 = 1... recomputed precisely: d/6 + d/4 = (2d + 3d)/12 = 5d/12 = 1 → d = 12/5 = 2.4 km.

34. Two men P and Q start from a place walking at 5 km/hr and 6.5 km/hr, respectively. What is the time they will take to be 92 km apart, if they walk in opposite directions?

(a) 2 hr (b) 4 hr (c) 6 hr (d) 8 hr

Answer: (d) 8 hr

Explanation: Walking in opposite directions, their speeds add up: 5 + 6.5 = 11.5 km/hr combined separation speed. Time to be 92 km apart = 92 ÷ 11.5 = 8 hours.

35. Two men, A and B, run a 4 km race on a circular course of 1/4 km. If their speeds are in the ratio of 5:4, how often does the winner pass the other?

(a) Thrice (b) Four times (c) Once (d) Twice

Answer: (a) Thrice

Explanation: While A (the faster runner) completes the 4 km race, B covers only 4 × (4/5) = 3.2 km in the same time (since their speed ratio is 5:4). The gap between them at that point is 4 - 3.2 = 0.8 km. Since each lap of the circular course is 1/4 km = 0.25 km, the number of times A gains a full lap on B (i.e., passes B) is 0.8 ÷ 0.25 = 3.2, meaning A passes B 3 complete times — Thrice.

36. A sum of money amounts to Tk. 6690 after 3 years and to Tk. 10035 after 6 years on compound interest. Find the sum.

(a) Tk 4360 (b) Tk 4560 (c) Tk 4660 (d) Tk 4460

Answer: (d) Tk 4460

Explanation: Since it is compound interest, the amount grows by the same multiplying factor every 3 years. So (Amount after 6 years) ÷ (Amount after 3 years) = 10035 ÷ 6690 = 1.5, which is the growth factor for each 3-year period. The original sum = (Amount after 3 years) ÷ 1.5 = 6690 ÷ 1.5 = Tk 4460.

37. One card is drawn at random from a pack of 52 cards. What is the probability that the card drawn is a face card (Jack, Queen and King) only?

(a) 1/13 (b) 3/13 (c) 3/52 (d) 9/52

Answer: (b) 3/13

Explanation: There are 3 face cards (Jack, Queen, King) in each of the 4 suits, giving 3 × 4 = 12 face cards out of 52. Probability = 12/52 = 3/13.

38. If two times of the daughter's age in years is included to the mother's age, the total is 70, and if two times of the mother's age is included to the daughter's age, the total is 95. So the Mother's age is -

(a) 38 (b) 39 (c) 40 (d) 41

Answer: (c) 40

Explanation: Let daughter = d, mother = m. From the conditions: 2d + m = 70 and d + 2m = 95. From the first equation, m = 70 - 2d. Substituting into the second: d + 2(70-2d) = 95 → d + 140 - 4d = 95 → -3d = -45 → d = 15. So m = 70 - 2(15) = 40. The mother's age is 40.

39. A student multiplied a number by 3/5 instead of 5/3. What is the percentage error in the calculation?

(a) 74% (b) 64% (c) 84% (d) 54%

Answer: (b) 64%

Explanation: Correct result = (5/3)x; wrong result = (3/5)x. Error = (5/3 - 3/5)x = (25-9)/15 x = (16/15)x. Percentage error = [Error ÷ Correct value] × 100 = [(16/15)/(5/3)] × 100 = (16/15 × 3/5) × 100 = (48/75) × 100 = 64%.

40. Ten years ago, A was half of B in age. If the ratio of their present ages is 3:4, then what will be the total of their present ages?

(a) 30 years (b) 35 years (c) 40 years (d) 45 years

Answer: (b) 35 years

Explanation: Let present ages be 3x and 4x. Ten years ago: (3x - 10) = ½(4x - 10) → 6x - 20 = 4x - 10 → 2x = 10 → x = 5. Present ages: 15 and 20; total = 35 years.

41. The size of the wooden block is 5 x 10 x 20 cm. How many such blocks will be required to construct a solid wooden cube of minimum size?

(a) 12 (b) 6 (c) 10 (d) 8

Answer: (d) 8

Explanation: The smallest cube that can be built must have a side length equal to the LCM of 5, 10 and 20, which is 20 cm. Volume of the cube = 20³ = 8000 cm³. Volume of one block = 5 × 10 × 20 = 1000 cm³. Number of blocks needed = 8000 ÷ 1000 = 8.

42. A tank is 25 m long, 12 m wide and 6 m deep. The cost of plastering its walls and bottom at 75 paisa per m² is:

(a) tk. 456 (b) tk. 458 (c) tk. 558 (d) tk. 568

Answer: (c) tk. 558

Explanation: Area of the four walls = 2(l+w)×h = 2(25+12)×6 = 2×37×6 = 444 m². Area of the bottom = l×w = 25×12 = 300 m². Total area to plaster = 444 + 300 = 744 m². Cost = 744 × 0.75 = Tk 558.

43. The difference of two numbers is 20% of the larger number. If the smaller number is 20, then the larger number is:

(a) 25 (b) 20 (c) 10 (d) 30

Answer: (a) 25

Explanation: Let the larger number be L. Given: L - 20 = 0.2L → 0.8L = 20 → L = 25.

44. 12 buckets of water fill a tank when the capacity of each bucket is 13.5 litres. How many buckets will be needed to fill, if the capacity of each bucket is 9 liters?

(a) 8 (b) 18 (c) 16 (d) 4

Answer: (b) 18

Explanation: Total capacity of the tank = 12 × 13.5 = 162 litres. With 9-litre buckets, number needed = 162 ÷ 9 = 18.

45. The sum of three numbers is 98. If the ratio of the first to second is 2:3 and that of the second to the third is 5:8, then the second number is

(a) 10 (b) 20 (c) 40 (d) 30

Answer: (d) 30

Explanation: First : Second = 2:3 and Second : Third = 5:8. To combine, make the 'Second' term equal by scaling: 2:3 → 10:15 and 5:8 → 15:24. So First : Second : Third = 10 : 15 : 24, total parts = 49. Since the sum is 98, each part = 98/49 = 2. The second number = 15 × 2 = 30.

46. k:l = 4:3 and l:m = 5:3, then find k:l:m?

(a) 20 : 15 : 9 (b) 18 : 24 : 11 (c) 9 : 15 : 1 (d) 21 : 7 : 3

Answer: (a) 20 : 15 : 9

Explanation: k:l = 4:3 and l:m = 5:3. To combine, make 'l' the same in both ratios: LCM of 3 and 5 is 15. So k:l = 4:3 = 20:15, and l:m = 5:3 = 15:9. Hence k:l:m = 20:15:9.

47. The value of √(10 + √(25 + √(108 + √(154 + √225)))) is:

(a) 6 (b) 2 (c) 4 (d) 8

Answer: (c) 4

Explanation: Working from the innermost root outward: √225 = 15; 154+15 = 169, √169 = 13; 108+13 = 121, √121 = 11; 25+11 = 36, √36 = 6; 10+6 = 16, √16 = 4.

48. A 270 m long train running at the speed of 120 km/hr crosses another train running in opposite direction at the speed of 80 km/hr in 9 seconds. What is the length of the other train?

(a) 230 m (b) 240 m (c) 260 m (d) 320 m

Answer: (a) 230 m

Explanation: Since the trains move in opposite directions, their relative speed = 120+80 = 200 km/hr = 200×(5/18) m/s = 500/9 m/s. Distance covered while crossing = relative speed × time = (500/9) × 9 = 500 m. This distance equals the sum of both train lengths: 270 + L = 500 → L = 230 m.

49. Three partners shared the profit in a business in the ratio 5 : 7 : 8. They had partnered for 14 months, 8 months and 7 months respectively. What was the ratio of their investments?

(a) 10 : 14 : 16 (b) 25 : 28 : 32 (c) 18 : 28 : 21 (d) 20 : 49 : 64

Answer: (d) 20 : 49 : 64

Explanation: Since Profit ∝ Investment × Time, Investment ∝ Profit ÷ Time. So investment ratio = (5/14) : (7/8) : (8/7). Using a common denominator of 56: 5/14 = 20/56, 7/8 = 49/56, 8/7 = 64/56. Hence the investment ratio = 20 : 49 : 64.

50. In a class, there are 15 boys and 10 girls. Three students are selected at random. The probability that 1 girl and 2 boys are selected, is

(a) 1/3 (b) 21/46 (c) 3/25 (d) 1/50

Answer: (b) 21/46

Explanation: Total students = 25; total ways to choose 3 = C(25,3) = 2300. Favourable ways = C(10,1) × C(15,2) = 10 × 105 = 1050. Probability = 1050/2300 = 21/46 (after simplifying by dividing both by 50).

51. An airplane flies along the four sides of a square at the speeds of 200, 400, 600 and 800 kmh. Find the average speed of the plane around the field.

(a) 432 km/hr (b) 375 km/hr (c) 384 km/h (d) 221 km/hr

Answer: (c) 384 km/h

Explanation: Since all four sides are of equal length, the average speed is the harmonic mean of the four speeds: Average speed = 4 ÷ (1/200 + 1/400 + 1/600 + 1/800). Using a common denominator of 2400: sum of reciprocals = (12+6+4+3)/2400 = 25/2400. Average speed = 4 ÷ (25/2400) = 4 × 2400/25 = 384 km/h.

52. X can complete a certain work in the same time in which Y and Z together can do it. If X and Y together can finish it in 10 days and Z alone in 15 days, then Y alone can do it in?

(a) 60 days (b) 25 days (c) 18 days (d) 20 days

Answer: (a) 60 days

Explanation: Let the daily work rates be x, y, z. Since X alone takes as long as Y and Z together, x = y + z. Also x + y = 1/10 (work done per day). Substituting: (y+z) + y = 1/10 → 2y + z = 1/10. Since Z alone takes 15 days, z = 1/15. So 2y = 1/10 - 1/15 = (3-2)/30 = 1/30 → y = 1/60. So Y alone can complete the work in 60 days.

53. 98.98 ÷ 11.03 + 7.014 × 15.99 = ?

(a) 132 (b) 144 (c) 12 (d) 121

Answer: (d) 121

Explanation: This is a simplification question meant to be solved by approximating each decimal to the nearest whole number: 98.98 ≈ 99, 11.03 ≈ 11, so 99 ÷ 11 = 9. Also 7.014 ≈ 7 and 15.99 ≈ 16, so 7 × 16 = 112. Adding: 9 + 112 = 121.

54. A and B start a business with initial investment in the ratio 12 : 11 and their annual profits were in the ratio 4 : 1. If A invested the money for 11 months, B invested the money for –

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

Answer: (a) 3 months

Explanation: Since Profit ∝ Investment × Time: (12×11) : (11×t) = 4 : 1, where t is B's investment period. So 132/(11t) = 4 → 132 = 44t → t = 3 months.

55. If m = 7 - 4√3 then (√m + 1/√m) = ?

(a) 3 (b) 8 (c) 4 (d) 6

Answer: (c) 4

Explanation: Note that 7 - 4√3 = 4 - 4√3 + 3 = (2 - √3)². So √m = 2 - √3 (taking the positive root, since 2 > √3). Then 1/√m = 1/(2-√3) = (2+√3)/[(2-√3)(2+√3)] = (2+√3)/(4-3) = 2+√3. Adding: √m + 1/√m = (2-√3) + (2+√3) = 4.

56. A container contains 40 litres of milk. From this container 4 litres of milk was taken out and replaced by water. This process was repeated further two times. How much milk is now contained in the container?

(a) 29.16 litres (b) 27.36 litres (c) 28 litres (d) 26.34 litres

Answer: (a) 29.16 litres

Explanation: For repeated dilution, the milk remaining after n replacements = Initial × (1 - removed/total)ⁿ. Here: 40 × (1 - 4/40)³ = 40 × (0.9)³ = 40 × 0.729 = 29.16 litres.

57. Which among the following is associated with excel?

(a) Spreadsheet (b) Graphic program (c) Microsoft office (d) None of these

Answer: (a) Spreadsheet

Explanation: Microsoft Excel is a spreadsheet software, used to organize, calculate and analyze data in rows and columns. (While Excel is part of the Microsoft Office suite, the specific category of software it belongs to is 'Spreadsheet'.)

58. The basic unit of a worksheet into which you enter data in Excel is called a -

(a) column (b) box (c) cell (d) table

Answer: (c) cell

Explanation: In an Excel worksheet, the intersection of a row and a column is called a 'cell' — this is the basic unit where data, formulas, or text are entered.

59. Wi-Fi uses –

(a) optic fiber (b) radio waves (c) phase line (d) sound-waves

Answer: (b) radio waves

Explanation: Wi-Fi (based on IEEE 802.11 standards) transmits data wirelessly using radio frequency (RF) waves, not optic fiber, phase lines, or sound waves.

60. What should be used if a company wants to include its company name and logo at the bottom of every page of a brochure?

(a) Footer (b) Header (c) Macro (d) Footnote

Answer: (a) Footer

Explanation: A 'Footer' is the section reserved at the bottom of every page of a document, commonly used to repeat information such as a company name, logo, or page number across all pages.

61. Protection and the Protect Sheet options can be selected from?

(a) Data (b) Edit (c) Format (d) Tools

Answer: (d) Tools

Explanation: In the classic menu-based versions of Microsoft Excel (pre-ribbon interface), the 'Protection' and 'Protect Sheet' options were found under the 'Tools' menu.

62. In order to tell Excel that we are entering a formula in a cell, we must begin with an operator such as-

(a) $ (b) = (c) @ (d) #

Answer: (b) =

Explanation: Every formula in Excel must begin with the equals sign '=' so that the program recognizes the entry as a formula rather than plain text or a number.

63. The bar at the top of a window that bears the name of the window is known as -

(a) Control Panel (b) Taskbar (c) Title bar (d) Menu bar

Answer: (c) Title bar

Explanation: The 'Title bar' is the horizontal bar at the very top of a window that displays the name/title of the open program or document.

64. Different icons of application software can be found in which bar in the latest version of Microsoft Windows?

(a) Start Menu (b) Browser (c) Status (d) Control Panel

Answer: (a) Start Menu

Explanation: The 'Start Menu' in Microsoft Windows lists and organizes shortcuts/icons of all installed application software, allowing users to launch programs from a central location.

65. What is the short cut key for manual line break?

(a) Ctrl + Enter (b) Space + Enter (c) Alt + Enter (d) Shift + Enter

Answer: (d) Shift + Enter

Explanation: 'Shift + Enter' inserts a manual line break (a new line within the same paragraph) in word processors like MS Word, as opposed to 'Enter' alone, which starts a new paragraph.

66. In which window do we display data in the form of tables in a row or column format in MS-Access?

(a) Macros (b) Sub-form (c) Filter (d) Datasheet

Answer: (d) Datasheet

Explanation: In MS-Access, the 'Datasheet' view displays table data in a simple row-and-column (spreadsheet-like) format, making it easy to view and edit records directly.

67. Verification of a login name and password is known as:

(a) configuration (b) authentication (c) accessibility (d) logging in

Answer: (b) authentication

Explanation: 'Authentication' is the process of verifying that a user's provided login name and password are correct/genuine, thereby confirming their identity before granting access.

68. In MS Excel if you press ____, the cell accepts your typing as its contents.

(a) Tab (b) Enter (c) Alt + Enter (d) Ctrl + Enter

Answer: (b) Enter

Explanation: Pressing 'Enter' after typing in a cell confirms and accepts the typed content as that cell's value, then usually moves the cursor to the cell below.

69. The frequency of which of the following is the highest?

(a) Light waves (b) Gamma rays (c) Microwaves (d) Radio waves

Answer: (b) Gamma rays

Explanation: In the electromagnetic spectrum, frequency and wavelength are inversely related. Gamma rays have the shortest wavelength and therefore the highest frequency among the options listed — higher than light waves, microwaves, or radio waves.

70. The first attempt in printing was made in England by -

(a) James Arkwright (b) James Watt (c) Isaac Newton (d) William Caxton

Answer: (d) William Caxton

Explanation: William Caxton introduced the first printing press to England in 1476, becoming the first English printer and translator to produce printed books in the country.

71. Which company is nicknamed "Big Blue"?

(a) Microsoft (b) Apple (c) IBM (d) Micromax

Answer: (c) IBM

Explanation: IBM (International Business Machines) has long been nicknamed 'Big Blue', a reference to the company's traditional blue corporate colour and logo.

72. The headquarter of United Nations Fund for Programs Population Activities (UNFPA) are at -

(a) New York (b) London (c) Washington (d) Rome

Answer: (a) New York

Explanation: UNFPA (United Nations Population Fund), like many UN agencies, has its headquarters in New York City, USA.

73. The Law of Natural Selection is associated with -

(a) Dalton (b) Darwin (c) Kepler (d) Mendel

Answer: (b) Darwin

Explanation: Charles Darwin proposed the theory of natural selection — the process by which organisms better suited to their environment survive and reproduce more successfully — as the central mechanism of his theory of evolution.

74. Guarantee to an exporter that the importer of his goods will pay immediately for the goods ordered by him, is known as -

(a) laissez-faire (b) inflation (c) Letter of Credit (d) None of them

Answer: (c) Letter of Credit

Explanation: A 'Letter of Credit' (L/C) is a bank-issued guarantee ensuring that an exporter will receive payment from the importer's bank, provided the terms and documents specified are met, thereby reducing payment risk in international trade.

75. Fathometer is used to measure

(a) Earthquakes (b) Rainfall (c) Sound intensity (d) Ocean depth

Answer: (d) Ocean depth

Explanation: A 'Fathometer' is an echo-sounding device that measures the depth of water beneath a ship by timing sound wave reflections off the seabed, used to determine ocean depth.

76. Lance Armstrong, a sportsperson of international repute, belongs to which of the following countries -

(a) USA (b) Spain (c) Ukraine (d) Brazil

Answer: (a) USA

Explanation: Lance Armstrong is an American former professional road racing cyclist, widely known for winning (and later being stripped of) multiple Tour de France titles.

77. Study of life in outer space is known as-

(a) exobiology (b) endobiology (c) enter biology (d) neobiology

Answer: (a) exobiology

Explanation: 'Exobiology' (also called astrobiology) is the branch of biology concerned with the search for and study of life beyond Earth, including in outer space and on other planets.

78. Stress test is related to assess health of which institution?

(a) Bank (b) Multinational Firm (c) Private Firm (d) None of them

Answer: (a) Bank

Explanation: A 'stress test' in finance is an analysis used by regulators and banks themselves to evaluate a bank's ability to withstand adverse economic conditions (such as a financial crisis or sudden losses), assessing its overall financial health and resilience.

79. Which one of the following is not the official language of United Nations Organizations?

(a) Spanish (b) Portuguese (c) Chinese (d) None of them

Answer: (b) Portuguese

Explanation: The United Nations has six official languages: Arabic, Chinese, English, French, Russian, and Spanish. Portuguese, despite being widely spoken globally (including in Brazil and Portugal), is not among the UN's official languages.

80. The normal threshold of hearing is around -

(a) 60-80 db (b) 45-60 db (c) 100-120 db (d) 25-45 db

Answer: (d) 25-45 db

Explanation: While the absolute physical threshold of hearing in acoustics is defined as roughly 0 dB, in everyday/practical terms very soft ambient sounds — such as a whisper or a quiet room — fall in the range of about 25-45 dB, which is the range commonly cited in general knowledge references for the level of the softest sounds a normal human ear can comfortably perceive.