SSC CHSL 2025 PYQs

Concept: Arrange process steps in the order they actually happen.

1. P – specimen introduced and placed on the slide (start).
2. Q – dye applied to the sample.
3. R – cover slip lowered to secure it.
4. S – slide placed under the lens (final step).

Trick: 'The specimen' is introduced only in P; 'then' in S marks the last step → P _ _ S, only (B) fits.

Answer: (B) P, Q, R, S

Concept: The opener introduces the topic; later sentences use pronouns/'the' to refer back.

1. P introduces the humanoid project – opener.
2. R: 'Their skills … merged' – the team starts work.
3. Q: algorithms developed over weeks.
4. S: successful outcome – conclusion.

Trick: Only one option starts with P → (D). S ('outcome') is clearly last.

Answer: (D) P, R, Q, S

Concept: Synonym = closest meaning.

1. Buyer = one who purchases.
2. Patron = a (regular) customer of a shop/business.
3. Chief = leader; Familiar = well known; Opponent = rival.

Yaad rakhein: Patron also means 'supporter/sponsor', but in shops it simply means customer.

Answer: (D) Patron

Concept: Pick words that sound like the bracketed ones but fit the meaning.

1. right → write (a report is written).
2. boar (wild pig) → bore (to make someone tired/uninterested).

Trick: Rite = ritual, boor = rude person, riot = violent disorder – none fit 'report' or 'tire'.

Answer: (C) write, bore

Concept: Oligarchy = rule by a few.

1. oligo = few, -archy = rule.
2. So a small group controls the government/society.
3. One-person rule = autocracy; lawlessness = anarchy; rule by priests = theocracy.

Trick: Mono = one, Olig = few, Demo = people, Theo = God – learn the prefixes, not the list.

Answer: (B) A small group of people that control a government or society

Concept: Left rank + Right rank − 1 = Total.

1. Right rank = Total + 1 − Left rank.
2. = 60 + 1 − 24 = 37.

Trick: Just do (Total + 1) − given rank: 61 − 24 = 37.

Answer: (B) 37th

Concept: Percentage = $\left(\frac{\text{obtained}}{\text{total}}\right)\times 100$.

1. $\frac{108}{160}=\frac{27}{40}$ (divide by 4).
2. $\frac{27}{40}\times 100=\frac{2700}{40}=67.5\%$.

Trick: 160 marks → $1\text{ mark}=\frac{100}{160}=0.625\%$. $108\times 0.625=67.5\%$.

Answer: (C) 67.5%

Concept: If both statements are negative ('No…'), no definite conclusion between the end terms follows.

1. Chair is separate from both Table and Sofa.
2. Table and Sofa may overlap fully, partly or not at all – nothing is fixed.
3. So neither 'No Table is Sofa' nor 'Some Sofas are not Tables' is certain; they are not a complementary pair either.

Trick: Negative + Negative = No conclusion. Check 'either-or' only for a Some/No pair on the same terms.

Answer: (D) Neither conclusion I nor II follows.

Concept: Total = left position + right position − 1.

1. Middle tree is 12th from each end.
2. Total = $12+12-1=23$.

Trick: Middle of an odd line: total = $2\times \text{position}-1=2\times 12-1=23$.

Answer: (A) 23

Concept: Equal and opposite moves cancel out.

1. 5 km East − 5 km West = 0 (east-west cancels).
2. Only 7 km South remains.
3. He is exactly South of the start.

Trick: Net E-W = 0, net N-S = 7 South → answer direction = South.

Answer: (B) South

Concept: Shortest distance = straight line from start to end after cancelling opposite moves.

1. 7 km East and 7 km West cancel.
2. Remaining displacement = 10 km North.
3. Shortest distance = 10 km.

Trick: If one axis cancels completely, the other axis value is the answer – no Pythagoras needed.

Answer: (B) 10 km

Concept: Find one rule that fits both given examples, then apply it.

1. Try: $\text{1st}+(\text{2nd}÷\text{3rd})$. $712+\frac{400}{20}=712+20=732$ ✓
2. $536+\frac{252}{18}=536+14=550$ ✓
3. $815+\frac{192}{12}=815+16=831$.

Trick: Result − first number gives the hidden part: $732-712=20=400÷20$. Rule found in one step.

Answer: (B) 831

Concept: Convert letters to positions and find the gap.

1. H8, K11, N14, Q17, T20 – each +3.
2. Next = 20 + 3 = 23 = W.

Trick: Use EJOTY: E5, J10, O15, T20, Y25 → 23 is two before Y = W.

Answer: (B) W

Concept: Choose the action that is honest, responsible and timely.

1. Informing the client early with a new timeline keeps trust and lets them plan.
2. Hiding gaps (A), blaming others (B) or ignoring calls (D) are unethical/unprofessional.

Trick: Reject options that hide, blame or avoid – the answer usually 'informs + offers a solution'.

Answer: (C) Inform the client immediately about the delay and propose a revised timeline.

Concept: Find the common relation between the numbers in each pair.

1. $27=3\times 9,45=3\times 15,33=3\times 11$.
2. $39=3\times 13$, not $3\times 12$ → odd one.

Trick: All first numbers are multiples of 3: divide by 3 and compare – $39÷3=13\ne 12$.

Answer: (D) 39 : 12

Concept: Pen is the tool used for writing; find the work done with a needle.

1. Needle is used for sewing.
2. Thread/cloth are materials; sharp is a quality – not the function.

Trick: Make a sentence: 'A pen is used for writing' → 'A needle is used for ___' → sewing.

Answer: (B) Sewing

Concept: Compare digit positions in the first pair.

1. 4826 → 4286: 1st and 4th digits fixed, 2nd and 3rd swapped (8↔2).
2. 3519 → swap 5 and 1 → 3159.

Trick: Only the middle two digits move – check which option keeps 3 _ _ 9 with 1,5 reversed.

Answer: (C) 3159

Concept: Split the series into equal repeating blocks.

1. 15 letters → try blocks of 5: p_rrq | pq_rq | _qrr_.
2. Combining blocks 1 and 2 gives block = pqrrq.
3. Fill: pqrrq pqrrq pqrrq → q, r, p, q.

Trick: Length 15 → test block size 3 or 5; known letters from different blocks fill each other's gaps.

Answer: (A) qrpq

Concept: Maximum total occurs when the two persons do not overlap: left rank + between + right rank.

1. Priya's side: 12 students (including her).
2. Between: 6.
3. Rahul's side: 25 (including him).
4. Max = 12 + 6 + 25 = 43.

Trick: Maximum → simply add all three numbers. (Minimum would need the overlap case.)

Answer: (C) 43

Concept: Right position = Total + 1 − Left position.

1. = 80 + 1 − 32
2. = 49.

Trick: (Total + 1) − rank: 81 − 32 = 49.

Answer: (B) 49th