- Test booklet
- प्रश्न पुस्तिका
- Booklet No.
- 2616551
- Series
- B
NIACL AO Prelims Paper 9
- Questions
- 100
- Maximum marks
- 100
- Minutes allowed
- 60
Instructions निर्देश
- This booklet has 100 questions in 3 parts: A. English Language (30), B. Reasoning Ability (35), C. Quantitative Aptitude (35).
- Each part has its own clock. When it runs out, that part closes and the next opens.
- Each question has 5 options and one right answer. A right answer earns 1 mark. A wrong answer costs 0.25. A question left blank scores nothing.
- Fill one bubble per question on the answer sheet. Unlike a real sheet, you can clear it and change your mind.
Scripting is off, so this page is a printed paper: answer on paper, then open each question’s working.
Part AEnglish Language
-
Select the correctly spelt word.
Answer and working
Answer E
The correct spelling is ammonium.
-
Select the correctly spelt word.
Answer and working
Answer C
The correct spelling is interrogation.
-
Select the word closest in meaning to the given word.
MistrustAnswer and working
Answer B
Mistrust (noun) and Suspicion share their main meaning. None of the other options does.
Source: WordNet 3.1
-
Select the word closest in meaning to the given word.
SegmentAnswer and working
Answer B
Segment (verb) and Section share their main meaning. None of the other options does.
Source: WordNet 3.1
-
Select the one word that can replace the given group of words.
A person who makes or repairs shoesAnswer and working
-
Select the one word that can replace the given group of words.
An attendant who carries the golf clubs for a playerAnswer and working
-
Select the word opposite in meaning to the given word.
OptimisticAnswer and working
-
Select the correctly spelt word.
Answer and working
Answer A
The correct spelling is dietary.
-
Select the word closest in meaning to the given word.
ImitateAnswer and working
Answer E
Imitate (verb) and Copy share their main meaning. None of the other options does.
Source: WordNet 3.1
-
Select the one word that can replace the given group of words.
A companion at playAnswer and working
-
Select the one word that can replace the given group of words.
A person who is not very intelligent or interested in cultureAnswer and working
-
Select the word closest in meaning to the given word.
ComicalAnswer and working
Answer A
Comical (adjective) and Funny share their main meaning. None of the other options does.
Source: WordNet 3.1
-
Select the incorrectly spelt word.
Answer and working
Answer C
graddient is wrong; it is spelt gradient. The others are correct.
-
Select the word closest in meaning to the given word.
UnafraidAnswer and working
Answer C
Unafraid (adjective) and Fearless share their main meaning. None of the other options does.
Source: WordNet 3.1
-
Select the word opposite in meaning to the given word.
JoyfulAnswer and working
-
Select the incorrectly spelt word.
Answer and working
Answer C
amplefier is wrong; it is spelt amplifier. The others are correct.
-
Select the one word that can replace the given group of words.
An official elected by the plebeians to protect their interestsAnswer and working
Answer E
Tribune: an official elected by the plebeians to protect their interests.
Source: WordNet 3.1
-
Select the word closest in meaning to the given word.
TantamountAnswer and working
Answer E
Tantamount (adjective) and Equivalent share their main meaning. None of the other options does.
Source: WordNet 3.1
-
Select the correctly spelt word.
Answer and working
Answer C
The correct spelling is therein.
-
Select the word closest in meaning to the given word.
ObligationAnswer and working
Answer D
Obligation (noun) and Duty share their main meaning. None of the other options does.
Source: WordNet 3.1
-
Select the incorrectly spelt word.
Answer and working
Answer B
irriplaceable is wrong; it is spelt irreplaceable. The others are correct.
-
Select the word opposite in meaning to the given word.
ThriftyAnswer and working
-
Select the word closest in meaning to the given word.
ExpectancyAnswer and working
Answer D
Expectancy (noun) and Anticipation share their main meaning. None of the other options does.
Source: WordNet 3.1
-
Select the word closest in meaning to the given word.
EntrustAnswer and working
Answer C
Entrust (verb) and Confide share their main meaning. None of the other options does.
Source: WordNet 3.1
-
Select the word opposite in meaning to the given word.
UptownAnswer and working
-
Select the one word that can replace the given group of words.
Someone who makes copies illegallyAnswer and working
-
Select the word opposite in meaning to the given word.
UpstairsAnswer and working
-
Select the word opposite in meaning to the given word.
ScarceAnswer and working
-
Select the correctly spelt word.
Answer and working
Answer C
The correct spelling is huckleberry.
-
Select the correctly spelt word.
Answer and working
Answer A
The correct spelling is inadmissible.
Part BReasoning Ability
-
Statement: A ≤ Y = T ≥ Q < S
Conclusions: I. A < T II. A = TAnswer and working
Answer C
A and T: the chain gives A ≤ T, so A < T is not definitely true. A and T: the chain gives A ≤ T, so A = T is not definitely true. Together the two cover every possibility the chain allows. So: Either conclusion I or II follows.
-
Statement: Z ≤ A < W = N ≤ T
Conclusions: I. W ≥ Z II. W > ZAnswer and working
Answer E
W and Z: the chain gives W > Z, so W ≥ Z is definitely true. W and Z: the chain gives W > Z, so W > Z is definitely true. So: Both conclusions follow.
-
Which one does not belong with the others?
Answer and working
Answer E
130, 104, 182, 52 are multiples of 13; 111 is not. The odd one is 111.
-
Statements:
(1) No clouds are cups.
(2) No rings are clouds.
(3) All rings are trees.Conclusions:
Take the statements to be true, however odd they sound. Which conclusion follows?
(I) Some trees are rings.
(II) No cups are clouds.Answer and working
Answer E
Conclusion I holds in every diagram the statements allow. Conclusion II holds in every diagram the statements allow. So: Both conclusions follow.
-
Statement: T < A < C ≤ H < Z
Conclusions: I. Z < T II. T < CAnswer and working
Answer B
Z and T: the chain gives Z > T, so Z < T is not definitely true. T and C: the chain gives T < C, so T < C is definitely true. So: Only conclusion II follows.
-
If ‘+’ means ‘×’, ‘−’ means ‘÷’, ‘×’ means ‘+’, ‘÷’ means ‘−’, what is the value of 24 ÷ 10 × 5 + 12 − 5?
Answer and working
Answer C
Replace the signs: 24 − 10 + 5 × 12 ÷ 5. Division and multiplication first, then addition and subtraction: 26.
Directions for questions 37 to 41
Seven friends, Arun, Bina, Chetan, Divya, Esha, Farhan and Gopal, sit in a row facing north. Esha sits third to the left of Divya. Exactly one person sits between Bina and Farhan. Exactly 2 people sit between Bina and Chetan. Chetan and Esha sit next to each other. Exactly 2 people sit between Chetan and Arun.-
Who sits exactly between Gopal and Chetan?
Answer and working
Answer D
Only one order fits every clue, from the left: Arun, Gopal, Esha, Chetan, Farhan, Divya, Bina. Esha.
-
How many people sit between Esha and Chetan?
Answer and working
Answer A
Only one order fits every clue, from the left: Arun, Gopal, Esha, Chetan, Farhan, Divya, Bina. Between them: None.
-
Who sits second to the right of Esha?
Answer and working
Answer C
Only one order fits every clue, from the left: Arun, Gopal, Esha, Chetan, Farhan, Divya, Bina. Farhan.
-
What is Divya’s position from the left end?
Answer and working
Answer E
Only one order fits every clue, from the left: Arun, Gopal, Esha, Chetan, Farhan, Divya, Bina. 6th.
-
Who sits at the extreme right end?
Answer and working
Answer C
Only one order fits every clue, from the left: Arun, Gopal, Esha, Chetan, Farhan, Divya, Bina. Bina.
-
In a certain code, APPLE is written as BQQMF. How is GOLD written in that code?
Answer and working
Answer B
From APPLE → BQQMF: each letter moves 1 place forward. Applied to GOLD: HPME.
-
Asha walks 4 km towards the north. She turns right and walks 5 km. She turns left and walks 12 km. Which direction is she facing now?
Answer and working
Answer A
Each right turn is a quarter turn clockwise, each left anticlockwise. The last leg runs North.
-
In a class, Ravi ranks 12th from the top and 7th from the bottom. How many students are in the class?
Answer and working
Answer A
Ravi is counted in both ranks, so the total is 12 + 7 − 1 = 18.
-
Imran walks 14 km towards the south. He turns right and walks 5 km. He turns right and walks 14 km. How far, and in which direction, is he from the starting point?
Answer and working
Answer C
Taking east and north as positive: he ends 5 km west and 0 km north of the start. Distance = √(5² + 0²) = 5 km. 5 km, west.
-
In the English alphabet, which letter is 3rd to the right of the 9th letter from the right?
Answer and working
Answer E
The 9th letter from the right is R (position 18). 3 places to the right: position 21, which is U.
-
Statements:
(1) No kites are rivers.
(2) Some kites are buses.
(3) No birds are buses.Conclusions:
Take the statements to be true, however odd they sound. Which conclusion follows?
(I) Some birds are not buses.
(II) All birds are buses.Answer and working
Answer A
Conclusion I holds in every diagram the statements allow. Conclusion II need not hold: some birds may lie outside buses. So: Only conclusion I follows.
-
In a certain code, ROAD is written as ILZW. How is FLOWER written in that code?
Answer and working
Answer B
From ROAD → ILZW: each letter is replaced by its opposite in the alphabet (A ↔ Z, B ↔ Y …). Applied to FLOWER: UOLDVI.
-
In a certain code, BREAD is written as EBFSC. How is SISTER written in that code?
Answer and working
Answer B
From BREAD → EBFSC: the word is written backwards and each letter moves 1 forward. Applied to SISTER: SFUTJT.
-
Statements:
(1) No rings are bags.
(2) No bags are buses.Conclusions:
Take the statements to be true, however odd they sound. Which conclusion follows?
(I) Some rings are buses.
(II) Some bags are not buses.Answer and working
Answer B
Conclusion I need not hold: rings and buses need not overlap at all. Conclusion II holds in every diagram the statements allow. So: Only conclusion II follows.
-
Statement: L < S ≤ M < V ≤ P
Conclusions: I. P ≥ S II. P ≤ MAnswer and working
Answer A
P and S: the chain gives P > S, so P ≥ S is definitely true. P and M: the chain gives P > M, so P ≤ M is not definitely true. So: Only conclusion I follows.
-
In the English alphabet, which letter is 5th to the right of the 15th letter from the left?
Answer and working
Answer D
The 15th letter from the left is O (position 15). 5 places to the right: position 20, which is T.
-
Q is the wife of F. L is the son of H. H is the brother of Q. How is L related to F?
Answer and working
Answer B
Follow the links out from F: Q is F’s wife; H is Q’s brother; L is H’s son. So L is F’s nephew.
-
F is the sister of B. U is the husband of F. How is U related to B?
Answer and working
Answer E
Follow the links out from B: F is B’s sister; U is F’s husband. So U is B’s brother-in-law.
-
If ‘+’ means ‘÷’, ‘−’ means ‘×’, ‘×’ means ‘−’, ‘÷’ means ‘+’, what is the value of 35 − 2 + 2 ÷ 17 × 11?
Answer and working
Answer C
Replace the signs: 35 × 2 ÷ 2 + 17 − 11. Division and multiplication first, then addition and subtraction: 41.
-
In a certain code, CHAIR is written as DGBHS. How is MARKET written in that code?
Answer and working
Answer D
From CHAIR → DGBHS: letters in odd places move 1 forward, letters in even places move 1 back. Applied to MARKET: NZSJFS.
-
Find the wrong number in the series: 3, 12, 37, 120, 363, 1,092, 3,279
Answer and working
Answer E
The rule: each term is the previous × 3 + 3. The term in place of 37 should be 39, so the wrong number is 37.
-
In a class, Meena ranks 11th from the top and 9th from the bottom. How many students are in the class?
Answer and working
Answer E
Meena is counted in both ranks, so the total is 11 + 9 − 1 = 19.
-
Find the wrong number in the series: 17, 61, 19, 55, 21, 49, 20, 43
Answer and working
Answer A
The rule: two series alternate: 17, 19, 21 … rising by 2, and 61, 55, 49 … falling by 6. The term in place of 20 should be 23, so the wrong number is 20.
-
Statements:
(1) All stones are chairs.
(2) All chairs are shirts.Conclusions:
Take the statements to be true, however odd they sound. Which conclusion follows?
(I) Some stones are chairs.
(II) No chairs are stones.Answer and working
Answer A
Conclusion I holds in every diagram the statements allow. Conclusion II need not hold: chairs and stones may overlap. So: Only conclusion I follows.
-
Rekha walks 13 km towards the west. She turns left and walks 15 km. She turns right and walks 11 km. She turns right and walks 15 km. She turns left and walks 15 km. How far is she from the starting point in a straight line?
Answer and working
Answer E
Taking east and north as positive: she ends 39 km west and 0 km north of the start. Straight-line distance = √(39² + 0²) = 39 km.
-
Statement: T < M < W ≤ H ≤ Y
Conclusions: I. W = Y II. W < YAnswer and working
Answer C
W and Y: the chain gives W ≤ Y, so W = Y is not definitely true. W and Y: the chain gives W ≤ Y, so W < Y is not definitely true. Together the two cover every possibility the chain allows. So: Either conclusion I or II follows.
-
V is the daughter of D. T is the husband of V. How is T related to D?
Answer and working
Answer D
Follow the links out from D: V is D’s daughter; T is V’s husband. So T is D’s son-in-law.
-
Statements:
(1) All birds are clocks.
(2) No phones are clocks.
(3) No phones are tables.Conclusions:
Take the statements to be true, however odd they sound. Which conclusion follows?
(I) No birds are phones.
(II) Some birds are not tables.Answer and working
Answer A
Conclusion I holds in every diagram the statements allow. Conclusion II need not hold: every one of the birds may be tables. So: Only conclusion I follows.
-
Statement: H < Y < R > C > P
Conclusions: I. P > Y II. P < RAnswer and working
Answer B
P and Y: the signs between them point both ways, so no relation can be fixed, so P > Y is not definitely true. P and R: the chain gives P < R, so P < R is definitely true. So: Only conclusion II follows.
Part CQuantitative Aptitude
-
A scooter runs at 144 km/h. What is its speed in metres per second?
Answer and working
Answer D
Multiply by 5/18: 144 × 5/18 = 40 m/s.
-
₹90,000 amounts to ₹1,08,900 in 2 years at compound interest, compounded annually. What is the rate of interest?
Answer and working
Answer B
(1 + R/100)² = 1,08,900/90,000 = 1.21, so 1 + R/100 = 1.1 and R = 10%. Dividing the interest equally between the years (simple interest) gives a wrong answer.
-
What is √529 + √256 − √144?
Answer and working
Answer B
23 + 16 − 12 = 27.
-
Simplify: 5⁄6 + 11⁄12 + 1⁄3
Answer and working
Answer E
Over the common denominator 12: the sum is 25⁄12. Adding tops and bottoms separately (17/21) is the trap.
-
Solve both equations and compare x and y.
I. x² − 2x − 99 = 0
II. y² − 12y + 35 = 0Answer and working
Answer E
I gives x = −9 or 11. II gives y = 5 or 7. Some x are bigger and some smaller than some y, so no single relation holds: x = y or no relation can be established.
-
Which number replaces the question mark? 0, 3, 8, 15, 24, 35, ?
Answer and working
Answer E
The rule: the terms are 1², 2², 3² … minus 1. The missing term is 48.
-
Solve both equations and compare x and y.
I. x² − 11x + 28 = 0
II. y² − 12y + 35 = 0Answer and working
Answer E
I gives x = 4 or 7. II gives y = 5 or 7. Some x are bigger and some smaller than some y, so no single relation holds: x = y or no relation can be established.
-
What is the value of 97² − 33²?
Answer and working
Answer D
a² − b² = (a + b)(a − b) = 130 × 64 = 8,320.
-
By selling a watch for ₹1,343, a man loses 15%. For how much should he sell it to gain 5%?
Answer and working
Answer E
CP = 1,343 × 100/85 = ₹1,580. For a 5% gain: 1,580 × 105/100 = ₹1,659.
-
A trader buys a bicycle for ₹200 and sells it for ₹170. What is the profit or loss percent?
Answer and working
Answer E
Loss = ₹30. As a percent of the cost price: 30 ÷ 200 × 100 = 15% loss.
-
Solve both equations and compare x and y.
I. x² + 9x + 18 = 0
II. y² − 3y − 88 = 0Answer and working
Answer E
I gives x = −6 or −3. II gives y = −8 or 11. Some x are bigger and some smaller than some y, so no single relation holds: x = y or no relation can be established.
-
A boat covers 95 km downstream in 5 hours and 68 km upstream in 4 hours. What is the speed of the boat in still water?
Answer and working
Answer C
Downstream speed = 95 ÷ 5 = 19 km/h; upstream = 68 ÷ 4 = 17 km/h. Boat = (19 + 17) ÷ 2 = 18 km/h.
-
The monthly rent of a shop goes from ₹880 to ₹1,232. What is the percentage increase?
Answer and working
Answer C
Change = ₹352. On the original value: 352 ÷ 880 × 100 = 40%, a 40% increase. Dividing by the new value, 1,232, is the usual slip.
-
Solve both equations and compare x and y.
I. x² − 9x + 20 = 0
II. y² − 6y − 27 = 0Answer and working
Answer E
I gives x = 4 or 5. II gives y = −3 or 9. Some x are bigger and some smaller than some y, so no single relation holds: x = y or no relation can be established.
-
The present ages of Asha and her elder brother are in the ratio 6 : 7. After 7 years, the ratio will be 7 : 8. What is Asha’s present age?
Answer and working
Answer E
Ages 6x and 7x. (6x + 7) : (7x + 7) = 7 : 8 gives x = 7. Asha is 6 × 7 = 42 years.
-
Simplify: 3⁄4 + 1⁄2 + 7⁄10
Answer and working
Answer E
Over the common denominator 20: the sum is 39⁄20. Adding tops and bottoms separately (11/16) is the trap.
-
₹19,920 is divided among Amit, Bina and Chetan in the ratio 3 : 4 : 5. What is Amit’s share?
Answer and working
Answer A
Total parts = 3 + 4 + 5 = 12. Amit gets 3/12 × 19,920 = ₹4,980.
-
Find the wrong number in the series: 1, 10, 28, 51, 87, 136, 200
Answer and working
Answer E
The rule: the differences are squares: 9, 16, 25, 36, 49, 64. The term in place of 28 should be 26, so the wrong number is 28.
-
The average of 9 numbers is 38. When one number is removed, the average of the rest is 36. Which number was removed?
Answer and working
Answer C
Total of 9 = 9 × 38 = 342. Total of 8 = 8 × 36 = 288. Removed = 342 − 288 = 54.
-
Find the wrong number in the series: 8, 68, 15, 66, 22, 64, 26, 62
Answer and working
Answer A
The rule: two series alternate: 8, 15, 22 … rising by 7, and 68, 66, 64 … falling by 2. The term in place of 26 should be 29, so the wrong number is 26.
-
What is 5% of 1,820?
Answer and working
Answer B
5% of 1,820 = 1,820 × 5/100 = 91.
-
A is four times as efficient as B. Together they finish a job in 12 days. How long would A take alone?
Answer and working
Answer C
If B does 1 unit a day, A does 4; together 5 units a day for 12 days = 60 units. A alone: 60 ÷ 4 = 15 days.
-
The simple interest on a sum for 2 years at 6% per annum is ₹3,120. What is the sum?
Answer and working
Answer B
P = SI × 100 / (R × T) = 3,120 × 100 / (6 × 2) = ₹26,000.
-
A bag holds 6 red, 2 blue and 2 green balls. One ball is drawn at random. What is the probability that it is red?
Answer and working
Answer A
6 of the 10 balls are red. Probability = 3⁄5.
-
A train 300 m long passes a signal post in 20 seconds. What is its speed in km/h?
Answer and working
Answer C
Speed = 300 ÷ 20 = 15 m/s = 15 × 18/5 = 54 km/h.
Directions for questions 91 to 95
Study the table and answer the questions that follow.
Students enrolled in five coaching centres, in two successive years Centre Year 1 Year 2 Centre A 560 728 Centre B 780 1,092 Centre C 800 880 Centre D 800 640 Centre E 680 748 -
What is the ratio of Centre B’s Year 1 figure to Centre E’s Year 2 figure?
Answer and working
Answer B
780 : 748 = 195 : 187.
-
By what percent did Centre C’s figure change from Year 1 to Year 2?
Answer and working
Answer A
Change = 880 − 800 = 80. On Year 1: 80 ÷ 800 × 100 = 10% increase.
-
Centre C’s Year 2 figure is what percent of Centre E’s Year 2 figure?
Answer and working
Answer A
880 ÷ 748 × 100 = 117.65%.
-
What is the average Year 2 figure of the five?
Answer and working
Answer E
Sum of Year 2 = 4,088. ÷ 5 = 817.6.
-
What is the total for Centre A over the two years?
Answer and working
Answer A
560 + 728 = 1,288.
-
Which number replaces the question mark? 67, 71, 73, 79, 83, 89, ?
Answer and working
Answer E
The rule: consecutive prime numbers. The missing term is 97.
-
Solve both equations and compare x and y.
I. x² − 5x = 0
II. y² − 3y − 54 = 0Answer and working
Answer E
I gives x = 0 or 5. II gives y = −6 or 9. Some x are bigger and some smaller than some y, so no single relation holds: x = y or no relation can be established.
-
Which number replaces the question mark? 3, 8, 15, 24, ?, 48
Answer and working
Answer D
The rule: the terms are 2², 3², 4² … minus 1. The missing term is 35.
-
Simplify: 1⁄2 + 2⁄5 + 2⁄3
Answer and working
Answer B
Over the common denominator 30: the sum is 47⁄30. Adding tops and bottoms separately (5/10) is the trap.
-
In what ratio must rice at ₹33/kg be mixed with rice at ₹66/kg so that the mixture is worth ₹48/kg?
Answer and working
Answer E
By alligation: cheaper : dearer = (66 − 48) : (48 − 33) = 18 : 15 = 6 : 5.