UPSC CSAT Mock Tests – Chapter 7: Mock Test 6 – Advanced Level (80 MCQs)
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together February has 28 days, exactly four weeks, so 1 March falls on a Sunday, like 1 February.
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UPSC CSAT Mock Tests – Chapter 7: Mock Test 6 – Advanced Level (80 MCQs) – 79 questions, subject: CSAT Mock Tests. Every question has the correct answer with a one-line explanation; tap "Show Answer". Free practice for TNPSC, UPSC, SSC, Bank and RRB exams – Shanmugam IAS Academy, Coimbatore.
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1.
Correct Answer: D [it does not exclude poor families through errors in identifying them]
Explanation:
supporters say "no poor family is left out because a form was wrong or an official was unhelpful".
2.
Correct Answer: D [Both approaches involve errors, and the better choice depends on a country's ability to identify the poor and its budget.]
Explanation:
the passage calls it a choice between two kinds of error and names the two deciding factors.
3.
Correct Answer: D [the error of targeting is unintended, while the cost of universality is accepted by design]
Explanation:
targeting's exclusions are mistakes; universality pays the non-poor as a planned price of including everyone.
4.
Correct Answer: C [2,744]
Explanation:
2,744 = 14³ (14 × 14 × 14).
5.
Correct Answer: C [22]
Explanation:
2,000 = 23 × 86 + 22, so subtracting the remainder 22 gives 1,978 = 23 × 86.
6.
Correct Answer: C [72]
Explanation:
the numbers are 12, 24 and 36 (their HCF is 12), and their sum is 72.
7.
Correct Answer: A [Only conclusion I follows]
Explanation:
the bananas are fruits and none of them is an apple, so some fruits are not apples (I); nothing stops apples being fruits, so II does not follow.
8.
Correct Answer: D [D]
Explanation:
the second condition says C needs D.
9.
Correct Answer: D [C and F]
Explanation:
C needs D, and D and F cannot both be chosen, so C and F never go together.
10.
Correct Answer: D [Four]
Explanation:
the valid teams are ACD, AEF, BCD and BEF – four in all.
11.
Correct Answer: D [Knowing a person's wishes in advance may help families agree to donation, so the subject should be discussed before a crisis.]
Explanation:
the passage links refusals to shock and ignorance of the person's wishes, and proposes discussion in calm times.
12.
Correct Answer: A [people who discuss donation beforehand are more likely to make their wishes known to their families]
Explanation:
the proposal works only if calm-time talk leads people to make their wishes known.
13.
Correct Answer: C [5]
Explanation:
the number is 56k + 29; 56k is a multiple of 8, so the remainder is 29 ÷ 8, which leaves 5.
14.
Correct Answer: B [0.2]
Explanation:
(0.2)³ = 0.008, and 0.008 ÷ 0.04 = 0.2.
15.
Correct Answer: C [50 per cent]
Explanation:
on an income of 100, savings were 25. The new income is 120 and spending 82.5, so savings are 37.5 – a rise of 50 per cent.
16.
Correct Answer: D [Part of their separate power to tax and the freedom to act alone on rates]
Explanation:
the passage says each "gave up part of their separate power to tax" and "lost the freedom to act alone".
17.
Correct Answer: A [the belief of both sides that the bargain is fair]
Explanation:
the passage says it "lasts only as long as both sides believe the bargain is fair".
18.
Correct Answer: A [The council takes most decisions by consensus, and compensation to States has been paid in full and on time.]
Explanation:
the concern is that States may feel decisions are imposed and compensation uncertain; consensus and full payment answer both.
19.
Correct Answer: A [Only course of action I follows]
Explanation:
assessing and teaching by level directly addresses the reading gap; closing all schools is drastic and impractical.
20.
Correct Answer: D [Ravi meets this condition for applying, but the statement does not say whether he has applied or meets other conditions.]
Explanation:
"only those who have passed" makes passing necessary, not sufficient: Ravi meets the stated condition, and no more follows.
21.
Correct Answer: B [26]
Explanation:
D = 4, O = 15, G = 7; 4 + 15 + 7 = 26.
22.
Correct Answer: C [30]
Explanation:
the steps alternate: add 1, then double. 15 × 2 = 30.
23.
Correct Answer: A [Seeds in a freezer stop adapting, while those grown in fields keep adapting to climate and pests.]
Explanation:
the passage contrasts the frozen variety that "stops adapting" with the one that "goes on changing".
24.
Correct Answer: D [encouraging some farmers to keep growing local varieties alongside storing seeds in banks]
Explanation:
the author values both: banks as insurance and fields where varieties go on adapting.
25.
Correct Answer: B [₹600]
Explanation:
the gap between a 10 per cent loss and a 5 per cent gain is 15 per cent of the cost, which is ₹90; the cost is ₹600.
26.
Correct Answer: C [50 per cent]
Explanation:
selling price = 1.2 × cost = 0.8 × marked price, so the marked price is 1.5 × cost – 50 per cent above it.
27.
Correct Answer: A [4 : 3 : 2]
Explanation:
let 3A = 4B = 6C = 12; then A = 4, B = 3 and C = 2.
28.
Correct Answer: D [Comparison with a group taking a dummy pill is needed to tell the drug's effect from the effect of expectation.]
Explanation:
the last sentence says a medicine is judged by improvement beyond the dummy-pill group.
29.
Correct Answer: C [20 litres]
Explanation:
the sugar, 6 litres, stays the same and must be 12 per cent of the new total: 6 ÷ 0.12 = 50 litres, so 20 litres of water is added.
30.
Correct Answer: B [38.5]
Explanation:
the multiples 7, 14, …, 70 average (7 + 70) ÷ 2 = 38.5.
31.
Correct Answer: B [0.9]
Explanation:
the total falls by 85 − 58 = 27, so the average falls by 27 ÷ 30 = 0.9.
32.
Correct Answer: A [they may survive outwardly while losing the social settings that gave them meaning]
Explanation:
the last sentence says a tradition "may keep its costumes and lose the occasions that gave it meaning".
33.
Correct Answer: A [Only argument I is strong]
Explanation:
I is directly linked to the fairness of the examination; II is weak, since an emergency can be handled through the invigilator without each candidate holding a phone.
34.
Correct Answer: D [The argument does not consider other changes in that year, such as a price cut or a rise in demand for all such products.]
Explanation:
the argument takes "after" for "because"; a rival cause in the same year could explain the rise.
35.
Correct Answer: A [make the cost of each promise and its trade-off visible to voters]
Explanation:
the last sentence says it "would make the trade-off visible".
36.
Correct Answer: D [some spending yields future returns that outweigh its cost, while some does not]
Explanation:
school meals "repay themselves in health and learning"; others give short-term benefit at long-term cost.
37.
Correct Answer: B [4]
Explanation:
if the youngest is y, the ages are y, y + 3, y + 6, y + 9 and y + 12; 5y + 30 = 50 gives y = 4.
38.
Correct Answer: B [60]
Explanation:
x − (2/5)x = (3/5)x = 36, so x = 60.
39.
Correct Answer: B [₹5,000]
Explanation:
6,050 ÷ (1.1 × 1.1) = 6,050 ÷ 1.21 = ₹5,000.
40.
Correct Answer: C [₹122]
Explanation:
CI = 16,000 × (1.05³ − 1) = ₹2,522; SI = ₹2,400; the difference is ₹122.
41.
Correct Answer: A [When internal channels fail, or when the harm is serious and imminent]
Explanation:
the passage states these two conditions.
42.
Correct Answer: D [They strike a reasonable balance, but depend on protection for those who raise concerns.]
Explanation:
the author explains the balance and adds that it "means little" without protection from reprisal.
43.
Correct Answer: A [serves loyalty to the institution at the expense of the public]
Explanation:
the passage says silence "protects the institution at the public's cost".
44.
Correct Answer: B [82]
Explanation:
122 = 11² + 1, so the answer is 9² + 1 = 82.
45.
Correct Answer: D [12 noon on Sunday]
Explanation:
the clock shows the right time again after losing 12 hours (720 minutes); at 5 minutes an hour that takes 144 hours, or 6 days – 12 noon on Sunday.
46.
Correct Answer: C [53]
Explanation:
a leap year has 52 weeks and 2 extra days; beginning on a Thursday, the extra days are Thursday and Friday, so there are 53 Fridays.
47.
Correct Answer: A [Better forecasts save lives only if warnings reach people in time and in a usable form.]
Explanation:
the passage makes the value of the warning depend on its reaching the person with clear advice.
48.
Correct Answer: D [9⅜ days]
Explanation:
A alone takes 15 days and B alone 25 days; together they do 1/15 + 1/25 = 8/75 a day, taking 75/8 = 9⅜ days.
49.
Correct Answer: C [60]
Explanation:
the leak removes 1/10 − 1/12 = 1/60 of the tank an hour, so it empties a full tank in 60 hours.
50.
Correct Answer: B [10]
Explanation:
in an hour the bus loses 9 km of running, which takes 9 ÷ 54 hours = 10 minutes.
51.
Correct Answer: B [8]
Explanation:
walking in opposite directions they close at 4 + 5 = 9 km/h; 1.2 ÷ 9 hours = 8 minutes.
52.
Correct Answer: A [18 km/h]
Explanation:
for equal distances, the average is the harmonic mean: 3 ÷ (1/10 + 1/20 + 1/60) = 3 ÷ (1/6) = 18 km/h.
53.
Correct Answer: A [The savings from shipping are lost if port handling is slow and the onward journey is costly.]
Explanation:
the passage says a ship saves money "only if the port handles it quickly and the last stretch … is short and cheap".
54.
Correct Answer: D [Faster cargo handling at ports and better connections from ports to inland factories]
Explanation:
it removes the two obstacles the passage names.
55.
Correct Answer: B [17 m]
Explanation:
the longest rod lies along the room's diagonal: √(12² + 9² + 8²) = √289 = 17 m.
56.
Correct Answer: A [It doubles]
Explanation:
V = πr²h; the new volume is π(2r)²(h/2) = 2πr²h – twice the old.
57.
Correct Answer: D [It helps readers, but author fees can create a new barrier and new risks to quality.]
Explanation:
the passage grants the gain to readers and names two problems with author fees.
58.
Correct Answer: A [the cost of access moves from those who want to read a paper to those who want to publish one]
Explanation:
free reading is paid for by fees on authors – the cost has moved, not gone.
59.
Correct Answer: C [64]
Explanation:
each of the 3 prizes can go to any of the 4 students: 4 × 4 × 4 = 64.
60.
Correct Answer: B [126]
Explanation:
the digits must be four different non-zero digits (0 cannot come first, and nothing is smaller), and each choice of four gives one number: C(9, 4) = 126.
61.
Correct Answer: C [2/3]
Explanation:
10 of the 15 balls are not green: 10/15 = 2/3.
62.
Correct Answer: B [2/9]
Explanation:
there are 3³ = 27 equally likely outcomes, of which 3! = 6 use all three numbers: 6/27 = 2/9.
63.
Correct Answer: D [School timings that ignore changes in teenagers' sleep patterns may reduce learning.]
Explanation:
early starts leave many teenagers short of sleep, and tired students learn less.
64.
Correct Answer: C [Release the pension with arrears at once, record the error honestly, apologise to the citizen, and use the case to tighten the checking process, treating the clerk's honest admission as a mitigating factor.]
Explanation:
this puts the citizen first, keeps the record true, improves the system and is fair to an honest employee.
65.
Correct Answer: D [100]
Explanation:
n² + n = n(n + 1) is a product of two consecutive numbers, one of which is even; so it is even for every n – all 100.
66.
Correct Answer: C [About 1 lakh crore litres]
Explanation:
140 crore × 2 × 365 ≈ 1,02,200 crore litres, which is about 1 lakh crore litres.
67.
Correct Answer: B [commits future generations to managing its waste]
Explanation:
the waste stays dangerous for thousands of years, so its storage is a burden on the future.
68.
Correct Answer: C [V]
Explanation:
the 15th letter is O; seven places to its right is the 22nd letter, V.
69.
Correct Answer: C [122]
Explanation:
each term is three times the previous one minus 1: 41 × 3 − 1 = 122.
70.
Correct Answer: A [6]
Explanation:
the unpainted cubes form an inner block of (3 − 2) × (4 − 2) × (5 − 2) = 1 × 2 × 3 = 6.
71.
Correct Answer: A [Animals will use crossings placed on the routes they already travel.]
Explanation:
the insistence on placing crossings "where the animals actually cross" assumes that animals use crossings on their own routes.
72.
Correct Answer: C [Explain that you are on an urgent task, fix a short time later in the day to go over the procedures together, and point the colleague to the office manual meanwhile.]
Explanation:
this protects the urgent work, keeps goodwill and still helps the newcomer learn.
73.
Correct Answer: B [keep the interest of the poorest in view when deciding]
Explanation:
the last sentence says it tells the official "whose interest to keep in view".
74.
Correct Answer: A [Only conclusion I follows]
Explanation:
the sharp rise in data-science admissions shows growing interest in a newer field; II is an extreme forecast that does not follow.
75.
Correct Answer: B [26th]
Explanation:
Arul is 9 + 6 = 15th from the top, so 40 − 15 + 1 = 26th from the bottom.
76.
Correct Answer: B [Science]
Explanation:
Science: 450 ÷ 500 = 90 per cent – the highest.
77.
Correct Answer: B [80.3 per cent]
Explanation:
1,205 passed out of 1,500: 80.3 per cent.
78.
Correct Answer: C [About 34 per cent]
Explanation:
100 failed in Arts out of 1,500 − 1,205 = 295 failures in all: about 34 per cent.
79.
Correct Answer: C [Both statements together are sufficient, but neither statement alone is sufficient]
Explanation:
together February has 28 days, exactly four weeks, so 1 March falls on a Sunday, like 1 February.
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› UPSC CSAT Mock Tests – Chapter 6: Mock Test 5 – Advanced Level (80 MCQs)
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