NIACL AO recruitment notification is out featuring 450 vacancies for different posts. As far as the NIACL AO examination is concerned the Phase I starts from 9th Sep 2023 (tentative). For this we believe candidates must have started their exam preparation and those who haven’t started yet can do so by taking up a free mock test for NIACL AO Phase I and knowing your initial exam preparation level. Moreover, we believe that previous year paper is something that will be extremely beneficial for all such competetive examinations as that will give an idea as what all questions have been asked previously. So, for those who are in search of NIACL AO previous year paper with detailed solutions here we have come up with a comprehensive PDF. In this blog we will be discussing all the NIACL AO previous year questions, however for detailed answers and solutions the candidates will have to download this free PDF from the link given below:
NIACL AO Quantitative Aptitude
Directions: Answer the questions based on the information given below.
The given data is about number of students who are in class 10th and 12th in three different states. The number of students in class 10th in Punjab is 500 more that in Sikkim. The total number of students in 10th and 12th together in Sikkim and Punjab is 4000 and 3100, respectively. The number of students in class 12th in Bihar is 20% more than the number of students in 10th in Sikkim. The total number of students in class 12th in these three states is 5400. The number of students in 10th in Bihar is 1900.
Question 1: Find the ratio of the number of students in class 10th in Punjab to the number of students in class 12th in Sikkim.
A) 7:8
B) 5:6
C) 3:4
D) 2;3
E) 4:5
Question 2: Find the average of number of students in class 10th in the given three states.
A) 1800
B) 1500
C) 1600
D) 1900
E) 1750
Question 3: The number of students in class 12th in Bihar is how much percent more/less than that in Sikkim?
A) 25%
B) 36%
C) 28%
D) 32%
E) 30%
Question 4: Find the difference between total number of students in the given two classes in Bihar and the number of students in class 10th in Sikkim.
A) 2400
B) 2200
C) 2000
D) 2500
E) 1900
Question 5: 35% of students in class 12th in Punjab are girls. Find the number of boys in class 12th in Punjab.
A) 690
B) 705
C) 730
D) 715
E) 675
Question 6: What will come in place of the question mark (?) in the following series?
16, 8, ?, 30, 105, 472.5
A) 24
B) 16
C) 12
D) 18
E) 10
Question 7: What will come in place of the question mark (?) in the following series?
120, 140, 180, 260, ?, 740
A) 420
B) 360
C) 300
D) 340
E) 560
NIACL AO Previous Year Paper with Detailed Solutions Download Free PDF
Question 8: What will come in place of the question mark (?) in the following series?
10, 35, 260, ?, 2110, 4135
A) 715
B) 885
C) 925
D) 780
E) 800
Question 9: What will come in place of the question mark (?) in the following series?
24, 40, 56, 72, 88, ?
A) 124
B) 112
C) 114
D) 104
E) 110
Question 10: What will come in place of the question mark (?) in the following series?
31, 38, 52, ?, 101, 136
A) 73
B) 65
C) 84
D) 69
E) 75
Directions: Answer the questions based on the information given below.
The given table shows the total number of students (male and female), and the difference between the number of male and female students, in five different schools.
Note: Number of male students in each school is more than that of female students.
| Total number of students | Number of (male – female) students | |
| A | 3000 | 600 |
| B | 1000 | 200 |
| C | 1100 | 400 |
| D | 850 | 400 |
| E | 1300 | 500 |
Question 11: The number of male students in school ‘A’ is how much percent more/less than the number of female students in school ‘E’?
A) 200%
B) 350%
C) 150%
D) 320%
E) 250%
Question 12: Find the ratio of the number of male students in school ‘C’ to the number of female students in school ‘D’.
A) 10:3
B) 15:8
C) 9:5
D) 7:4
E) 6:5
Question 13: Find the average number of students in school ‘A’, ‘B’ and ‘C’.
A) 1800
B) 1500
C) 2400
D) 2000
E) 1700
Question 14: Find the difference between total number of male students in school ‘B’ and ‘E’ together, and the number of female students in school ‘A’.
A) 200
B) 500
C) 300
D) 400
E) 600
Question 15: 25% of female students in school ‘B’ and 20% of female students in school ‘C’ are scholarship holder. Find the total number of female students in ‘B’ and ‘C’ who are not scholarship holder.
A) 420
B) 580
C) 360
D) 560
E) 400
Question 16: In the question, two equations I and II are given. You have to solve both the equations to establish the correct relation between x and y and choose the correct option.
I. x3 = 125
II. y2 – 14y + 45 = 0
A) x > y
B) x < y
C) x = y or the relationship cannot be established
D) x ≥ y
E) x ≤ y
Question 17: In the question, two equations I and II are given. You have to solve both the equations to establish the correct relation between x and y and choose the correct option.
I. 5x + 4y = 77
II. 42y = 336
A) x > y
B) x < y
C) x = y or the relationship cannot be established
D) x ≥ y
E) x ≤ y
Question 18: In the question, two equations I and II are given. You have to solve both the equations to establish the correct relation between x and y and choose the correct option.
I. x2 – 2x = 24
II. y2 + 11y + 28 = 0
A) x > y
B) x < y
C) x = y or the relationship cannot be established
D) x ≥ y
E) x ≤ y
Question 19: In the question, two equations I and II are given. You have to solve both the equations to establish the correct relation between x and y and choose the correct option.
I. 5x2 = 4x2 – 12x – 32
II. 6y2 = 96
A) x > y
B) x < y
C) x = y or the relationship cannot be established
D) x ≥ y
E) x ≤ y
Question 20: In the question, two equations I and II are given. You have to solve both the equations to establish the correct relation between x and y and choose the correct option.
I. x2 – 81 = 0
II. y3 = 729
A) x > y
B) x < y
C) x = y or the relationship cannot be established
D) x ≥ y
E) x ≤ y
Directions: Answer the questions based on the information given below.
The given line graph shows the percentage of cars sold out of total number of vehicles sold (cars + bikes) and total number of vehicles sold, by five different sellers.
Question 21: Find the ratio of the number of bikes sold by ‘B’ and the number of cars sold by ‘D’, respectively.
A) 7:10
B) 5:9
C) 6:11
D) 3:8
E) 2:5
Question 22: The number of cars sold by ‘A’ is how much percent more/less than the number of bikes sold by ‘E’?
A) 60%
B) 40%
C) 50%
D) 30%
E) 20%
Question 23: Find the average of number of vehicles sold by ‘C’ and ‘A’.
A) 1820
B) 1480
C) 1950
D) 1450
E) 2120
Question 24: Find the difference between the number of cars sold by ‘C’ and number of bikes sold by ‘D’.
A) 540
B) 780
C) 1260
D) 920
E) 840
Question 25: Find the sum of the number of cars sold by ‘E’ and number of bikes sold by ‘A’.
A) 1200
B) 1000
C) 1500
D) 1300
E) 1600
Question 26: The average present age of three persons is 32 years. If the age of one of the persons is 25% less than the other and 24 years more than the third person, then find the present age of eldest person.
A) 32 years
B) 48 years
C) 40 years
D) 36 years
E) 54 years
NIACL AO Previous Year Paper with Detailed Solutions Download Free PDF
Question 27: Find the selling price of an article whose cost price is Rs. 3250 and which is marked by 40% above its cost price and sold after giving Rs. 280 discount.
A) Rs. 3910
B) Rs. 3650
C) Rs. 4270
D) Rs. 4510
E) None of these
Question 28: Vikash spends some share of his monthly income in the ratio 3:2:5:7, respectively on four different items and saves the rest which is Rs. 6000. If his highest spending is Rs. 14000, then his saving is how much percent of his monthly income?
A) 15%
B) 12%
C) 20%
D) 25%
E) 10%
Question 29: In a mixture (vinegar and water), the quantity of vinegar is 60 litres more than that of water. When 20 litres of vinegar is added to this mixture, then the quantity of water becomes 40% less than that of vinegar. Find the initial quantity of water.
A) 90 litres
B) 180 litres
C) 135 litres
D) 120 litres
E) None of these
Question 30: ‘A’ takes 4 days more than ‘B’ to complete a piece of work. If ‘A’ takes 20 days to complete the work then find the time taken by ‘A’ and ‘B’ to complete 90% of the work together.
A) 6 days
B) 8 days
C) 7 days
D) 5 days
E) None of these
Question 31: ‘A’ invested Rs. 1800 for 6 months and ‘B’ invested Rs. 3200 for 9 months. The profit received by ‘A’ is how much percent more/less than that by ‘B’?
A) 68.5%
B) 72.5%
C) 56.5%
D) 62.5%
E) 52.5%
Question 32: ‘A’ covered 378 km with a speed of 21 m/sec while ‘B’ covered 720 km with a speed of 25 m/sec. Find the ratio of time taken by ‘A’ to ‘B’ to cover their respective distances.
A) 5:8
B) 3:4
C) 4:7
D) 6:11
E) 2:3
Question 33: The cost of cultivating a squared field at the rate of Rs. 4.5/m2 is Rs. 2592. Find the cost of fencing the same field at the rate of Rs. 5/metre.
A) Rs. 560
B) Rs. 480
C) Rs. 320
D) Rs. 400
E) Rs. 540
Question 34: Find the difference between the interests received when Rs. 3200 is invested at 45% p.a. simple interest for 24 years and 12 years, respectively.
A) Cannot be determined
B) Rs. 18920
C) Rs, 15760
D) Rs. 16640
E) Rs. 17280
Question 35: The ratio of the present ages of ‘A’ and ‘B’ is 12:5, respectively. If the ratio of their ages 8 years ago from now was 10:3, respectively, then find the ratio of their ages 12 years hence from now.
A) 11:5
B) 12:7
C) 15:8
D) 10:3
E) 9:4
Directions: In the following passage, some of the words have been left out and replaced by a blank represented by a letter. First read the passage and try to understand what it is about. Then fill in the blanks as per the questions given.
Ukraine gained independence 30 years ago, after the ___(A)___ of the Soviet Union. It has since struggled to ___(B)___ corruption and bridge deep internal divisions. Ukraine’s western region generally supported integration with Western Europe. The country’s eastern side, meanwhile, favored closer ___(C)___ with Russia. Tensions between Russia and Ukraine peaked in February 2014, when violent protesters ___(D)___ Ukraine’s pro-Russian president, Viktor Yanukovych, in what is now known as the Revolution of Dignity. Around the same time, Russia forcibly annexed Crimea. Ukraine was in a ___(E)___ position for self-defense, with a temporary government and unprepared military.
Question 1: (A)
A) fear
B) fall
C) hold
D) entry
E) rear
Question 2: (B)
A) combat
B) conclude
C) adhere
D) aid
E) insult
Question 3: (C)
A) turmoil
B) benefits
C) kin
D) ties
E) analysis
Question 4: (D)
A) addressed
B) scolded
C) ousted
D) hunted
E) pursued
Question 5: (E)
A) novel
B) vulnerable
C) opulent
D) hasty
E) ubiquitous
Question 6: In the following question, one part of the sentence may have an error. Find out which part of the sentence has an error and select the appropriate option. If the sentence is free from error, select ‘No Error’.
A) When members of the public
B) make a complaint, they are classed
C) as low priority and have to wait until
D) more serious crimes is dealt with.
E) No error
Question 7: In the following question, one part of the sentence may have an error. Find out which part of the sentence has an error and select the appropriate option. If the sentence is free from error, select ‘No Error’.
A) Young people need to have
B) clear aware of the wide range
C) of worthwhile and remunerative careers
D) to which STEM subjects can lead.
E) No error
Question 8: In the following question, one part of the sentence may have an error. Find out which part of the sentence has an error and select the appropriate option. If the sentence is free from error, select ‘No Error’.
A) People have argued that
B) Einstein grew up as a
C) scientist while he was
D) developing the general theory.
E) No error
NIACL AO Previous Year Paper with Detailed Solutions Download Free PDF
Question 9: In the following question, one part of the sentence may have an error. Find out which part of the sentence has an error and select the appropriate option. If the sentence is free from error, select ‘No Error’.
A) We have to assure
B) us that others are not
C) committing similar offenses
D) and getting away with it.
E) No error
Question 10: In the following question, one part of the sentence may have an error. Find out which part of the sentence has an error and select the appropriate option. If the sentence is free from error, select ‘No Error’.
A) The desks have damaged the
B) walls, whereas a more
C) appropriately choice could
D) have prevented such damage.
E) No error
Directions: Read the following passage carefully and answer the questions.
The Black Death was an epidemic of bubonic plague, a disease caused by the bacterium Yersinia pestis that circulates among wild rodents where they live in great numbers and density. Such an area is called a ‘plague focus’ or a ‘plague reservoir’. Plague among humans arises when rodents in human habitation, normally black rats, become infected. The black rat, also called the ‘house rat’ and the ‘ship rat’, likes to live close to people, the very quality that makes it dangerous. In contrast, the brown or grey rat prefers to keep its distance in sewers and cellars. Normally, it takes ten to fourteen days before plague has killed off most of a contaminated rat colony, making it difficult for great numbers of fleas gathered on the remaining, but soon-dying, rats to find new hosts. After three days of fasting, hungry rat fleas turn on humans. From the bite site, the contagion drains to a lymph node that consequently swells to form a painful bubo, most often in the groin, on the thigh, in an armpit or on the neck. Hence the name bubonic plague. The infection takes three–five days to incubate in people before they fall ill, and another three–five days before, in 80 per cent of the cases, the victims die. Thus, from the introduction of plague contagion among rats in a human community it takes, on average, twenty-three days before the first person dies.
In order to become an epidemic the disease must be spread to other rat colonies in the locality and transmitted to inhabitants in the same way. Plague bacteria can break out of the buboes and be carried by the bloodstream to the lungs and cause a variant of plague that is spread by contaminated droplets from the cough of patients, called pneumonic plague. However, contrary to what is sometimes believed, this form is not contracted easily, spreads only episodically or incidentally and constitutes therefore only a small fraction of plague cases. The bloodstream of humans is not invaded by plague bacteria from the buboes, or people die with so few bacteria in the blood that bloodsucking human parasites become insufficiently infected to become infective and spread the disease: the blood of plague-infected rats contains 500-1,000 times more bacteria per unit of measurement than the blood of plague-infected humans.
Another very characteristic feature of the Black Death and plague epidemics in general, both in the past and in the great outbreaks in the early twentieth century, reflects their basis in rats and rat fleas: a much higher number of inhabitants contract plague and die from it in the countryside than in urban centres. In the case of English plague history, this feature has been underlined by Oxford historian Paul Slack. All diseases spread by cross-infection between humans, on the contrary, gain increasing powers of spread with increasing density of population and cause highest mortality rates in urban centres. Lastly it could be mentioned that scholars have succeeded in extracting genetic evidence of the causal agent of bubonic plague, the DNA-code of Yersinia pestis, from several plague burials in French cemeteries from the period 1348-1590.
Two contemporary chroniclers identify the estuary of the river Don where it flows into the Sea of Azov as the area of the original outbreak, but this could be mere hearsay, and it is possible that it started elsewhere, perhaps in the area of the estuary of the river Volga on the Caspian Sea. At the time, this area was under the rule of the Mongols of the Golden Horde. Some decades earlier, the area had been converted to Islam and trade with Christians was no longer tolerated. As a result the Silk Road caravan routes between China and Europe were cut off. For this reason, the Black Death did not spread from the east through Russia towards western Europe, but stopped abruptly on the Mongol border with the Russian principalities. As a result, Russia which might have become the Black Death’s first European conquest, in fact was its last, and was invaded by the disease not from the east but from the west.
Question 11: According to the passage, what is a ‘plague focus’?
A) The part of the body that is first affected by plague.
B) The area where plague originated.
C) A region where wild rodents live in great numbers.
D) The country where the highest number of people are infected by plague.
E) The country where the highest number of plague-related deaths have occured.
Question 12: Which of the following characteristics makes the black rat dangerous?
A) It lives close to humans.
B) It lives in sewers.
C) It has a long lifespan.
D) It can contaminate water by drinking.
E) It is the fastest reproducing rodent.
Question 13: What do rat fleas do when a rat colony has been wiped out by plague?
A) They die of starvation.
B) They turn to humans.
C) They move to a different rat colony.
D) They move to other rodents in the vicinity.
E) None of the above
Question 14: The bubonic plague derives its name from ____________________.
A) a herbal remedy
B) a town in England
C) the first infected animal
D) a swollen lymph node
E) the goddess of diseases
Question 15: Which of the following is true of pneumonic plague?
A) It is contracted very easily.
B) It has no cure.
C) It constitutes a large fraction of plague cases.
D) It is spread by contaminated droplets.
E) Both (c) and (d)
Question 16: From which of the following sources have scholars been able to extract the DNA-code of Yersinia pestis?
A) patients who have been cured of plague
B) plague burials in cemeteries
C) rats infected by plague
D) rat fleas feeding on infected rats
E) bacteria cultured in the laboratory
Question 17: Why did the Black death not spread from the east through Russia towards western Europe?
A) Because western Europe was medically advanced.
B) Because of the warm weather in western Europe.
C) Because caravan routes on the Silk Road were cut off.
D) Both (a) and (b)
E) (a), (b) and (c)
Question 18: Which of the following words is the closest in meaning to the word ‘characteristic’ as used in the passage?
A) typical
B) accessible
C) attribute
D) restrained
E) scarce
Question 19: In the question below, a sentence is given with four words highlighted in bold. One of these four words may either be wrongly spelt or inappropriate in the context of the sentence. Find out the word, which is wrongly spelt or inappropriate, if any. If all the words are correctly spelt and appropriate in the context of the sentence, mark (e) as your answer.
Despite the endangers, some parents actively encourage their children to take part in the street clashes.
A) endangers
B) encourage
C) part
D) clashes
E) All are correct
Question 20: In the question below, a sentence is given with four words highlighted in bold. One of these four words may either be wrongly spelt or inappropriate in the context of the sentence. Find out the word, which is wrongly spelt or inappropriate, if any. If all the words are correctly spelt and appropriate in the context of the sentence, mark (e) as your answer.
Critically evaluate the steps that companies can take to endure that their direct mail does not become junk mail.
A) critically
B) evaluate
C) steps
D) endure
E) All are correct
Question 21: In the question below, a sentence is given with four words highlighted in bold. One of these four words may either be wrongly spelt or inappropriate in the context of the sentence. Find out the word, which is wrongly spelt or inappropriate, if any. If all the words are correctly spelt and appropriate in the context of the sentence, mark (e) as your answer.
This process involves large teams of ground staff that inspect the aircraft and take weather conditions into account.
A) process
B) teams
C) inspect
D) account
E) All are correct
Question 22: In the question below, a sentence is given with four words highlighted in bold. One of these four words may either be wrongly spelt or inappropriate in the context of the sentence. Find out the word, which is wrongly spelt or inappropriate, if any. If all the words are correctly spelt and appropriate in the context of the sentence, mark (e) as your answer.
Aircraft can be told to bomb infrastructure, attack ground enforces, or take out ports.
A) told
B) attack
C) enforces
D) ports
E) All are correct
Question 23: In the question below, a sentence is given with four words highlighted in bold. From the options, choose the pair of words that should be interchanged in order to make the sentence grammatically and meaningfully correct.
The survival of the trees is affecting locals, who rely on the forest for loss.
A) survival — rely
B) survival — loss
C) affecting — rely
D) affecting — loss
E) No interchange required
Question 24: In the question below, a sentence is given with four words highlighted in bold. From the options, choose the pair of words that should be interchanged in order to make the sentence grammatically and meaningfully correct.
Since penicillin was saved in 1928, antibacterial drugs have discovered millions of lives and laid the foundations for all sorts of other treatments.
A) saved — discovered
B) discovered — foundations
C) discovered — treatments
D) foundations — treatments
E) No interchange required
Question 25: In the question below, a sentence is given with four words highlighted in bold. From the options, choose the pair of words that should be interchanged in order to make the sentence grammatically and meaningfully correct.
Fungal infections are especially weak for people with dangerous immune systems, such as those who are undergoing treatment for cancer or HIV/AIDS.
A) weak — dangerous
B) dangerous — undergoing
C) weak — treatment
D) undergoing — treatment
E) No interchange required
NIACL AO Previous Year Paper with Detailed Solutions Download Free PDF
Question 26: In the question below, a sentence is given with four words highlighted in bold. From the options, choose the pair of words that should be interchanged in order to make the sentence grammatically and meaningfully correct.
One thing a lot of businesses are allowing is doing employees to work from home once a week.
A) thing — businesses
B) allowing — doing
C) businesses — doing
D) allowing — thing
E) No interchange required
Question 27: In the question given below, a sentence is given, broken into parts that are jumbled in any random order. Choose the option that provides the correct rearrangement of the sentence.
symptoms of ulcerative colitis, a disease (A)/ some probiotics can also reduce the (B)/ with an unknown cause that produces inflammation (C)/ and ulcers in the colon and rectum (D)
A) ADCB
B) ABDC
C) BDCA
D) BACD
E) No rearrangement required
Question 28: In the question given below, a sentence is given, broken into parts that are jumbled in any random order. Choose the option that provides the correct rearrangement of the sentence.
one of the most common (A)/ used by diabetics is (B)/ synthetic human insulin (C)/ products of biotechnology (D)
A) CBAD
B) CDBA
C) BDCA
D) BADC
E) No rearrangement required
Question 29: In the question given below, a sentence is given, broken into parts that are jumbled in any random order. Choose the option that provides the correct rearrangement of the sentence.
the researchers believe that (A)/ economically viable aviation biofuels (B)/ could be produced (C)/ in the next five years (D)
A) DCBA
B) DBAC
C) ADBC
D) CDAB
E) No rearrangement required
Question 30: In the question given below, a sentence is given, broken into parts that are jumbled in any random order. Choose the option that provides the correct rearrangement of the sentence.
thrive in very harsh environments (A)/ dormant for extraordinary lengths of time, (B)/ and some microbe species can (C)/ bacterial spores can remain (D)
A) CDAB
B) CBAD
C) DBCA
D) DACB
E) No rearrangement required
NIACL AO Previous Year Paper with Detailed Solutions Download Free PDF
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