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English SSC CGL Tier I papers. Free 60-minute mocks, 100 questions, 200 marks; +2 correct and −0.5 incorrect. Source: SSC response sheets preserved by SSC Portal. The marked archived keys have not been independently revalidated against final SSC keys; worked explanations are pending review. A/B/C/D correspond to source options 1/2/3/4.

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Civil Engineering (SSC JE)

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Question 1 · Civil Engineering (SSC JE) · Transportation Engineering
Camber is provided on a straight road mainly to
Choose your answer for question 1
Answer and explanation

Correct answer: B

Camber is the transverse slope of the carriageway from its crown, so water drains quickly to the side drains.

Question 2 · Civil Engineering (SSC JE) · Transportation Engineering
For a horizontal curve, with V in km/h and R in metres, the relation between superelevation e and side friction f is e + f =
Choose your answer for question 2
Answer and explanation

Correct answer: D

In SI units e + f = v²/gR and with v = V/3.6 this becomes V²/127R.

Question 3 · Civil Engineering (SSC JE) · Transportation Engineering
The stopping sight distance is the sum of
Choose your answer for question 3
Answer and explanation

Correct answer: A

SSD = vt + v²/2gf, where vt is the lag distance during reaction time and v²/2gf is the braking distance.

Question 4 · Civil Engineering (SSC JE) · Transportation Engineering
In the standard penetration test on bitumen, a needle loaded with 100 g penetrates the sample for 5 seconds at a temperature of
Choose your answer for question 4
Answer and explanation

Correct answer: B

Penetration is the depth in tenths of a millimetre reached by a standard needle under 100 g in 5 s at 25 °C. It measures the hardness of bitumen.

Question 5 · Civil Engineering (SSC JE) · Transportation Engineering
The track gauge of Indian broad gauge railways is
Choose your answer for question 5
Answer and explanation

Correct answer: B

Broad gauge is 1676 mm, metre gauge is 1000 mm and narrow gauge is 762 or 610 mm. 1435 mm is the standard gauge.

Question 6 · Civil Engineering (SSC JE) · Transportation Engineering
The CBR (California Bearing Ratio) test is used to evaluate
Choose your answer for question 6
Answer and explanation

Correct answer: D

CBR compares the load for 2.5 mm or 5 mm penetration of a plunger in the soil with that in standard crushed stone.

Question 7 · Civil Engineering (SSC JE) · Transportation Engineering
Rigid pavements transmit wheel loads to the subgrade mainly by
Choose your answer for question 7
Answer and explanation

Correct answer: C

A concrete slab has high flexural rigidity and spreads the load over a large subgrade area, unlike flexible pavements that rely on layered load spreading.

Question 8 · Civil Engineering (SSC JE) · Transportation Engineering
The stopping sight distance for a design speed of 60 km/h, with a reaction time of 2.5 s and a coefficient of friction of 0.35, is about
Choose your answer for question 8
Answer and explanation

Correct answer: C

v = 16.67 m/s. Lag = 16.67 × 2.5 = 41.7 m. Braking = v²/2gf = 277.8 / (2 × 9.81 × 0.35) = 40.5 m. SSD = 82.2 m.

Question 9 · Civil Engineering (SSC JE) · Transportation Engineering
The length of a circular curve of radius 300 m and deflection angle 60° is
Choose your answer for question 9
Answer and explanation

Correct answer: C

L = R Δ (in radians) = 300 × π/3 = 314.2 m.

Question 10 · Civil Engineering (SSC JE) · Transportation Engineering
A road has a rising gradient of +2 percent followed by a falling gradient of −2 percent. The algebraic difference of the grades is
Choose your answer for question 10
Answer and explanation

Correct answer: B

The deviation angle is N = g1 − g2 = 2 − (−2) = 4 percent, which a summit curve must accommodate.

Question 11 · Civil Engineering (SSC JE) · Transportation Engineering
The capacity of a lane is C = 1000 V/S. If V = 50 km/h and the average spacing S = 25 m, the capacity in vehicles per hour is
Choose your answer for question 11
Answer and explanation

Correct answer: C

C = 1000 × 50 / 25 = 2000 vehicles per hour.

Question 12 · Civil Engineering (SSC JE) · Transportation Engineering
The wheels of Indian railway rolling stock have a coning of
Choose your answer for question 12
Answer and explanation

Correct answer: A

The tread is tapered at 1 in 20, which centres the wheelset on the track and lets the outer wheel travel farther on curves.

Question 13 · Civil Engineering (SSC JE) · Transportation Engineering
The Marshall stability test is used for
Choose your answer for question 13
Answer and explanation

Correct answer: A

The test finds the optimum bitumen content from the stability, flow, density and voids of compacted specimens.

Question 14 · Civil Engineering (SSC JE) · Transportation Engineering
The Los Angeles abrasion test on aggregate measures its
Choose your answer for question 14
Answer and explanation

Correct answer: B

Aggregates are tumbled with steel balls in a drum and the percentage passing a 1.7 mm sieve is the abrasion value. The impact test measures toughness.

Question 15 · Civil Engineering (SSC JE) · Transportation Engineering
The capacity of a single lane of traffic is C = 1000V/S. For a speed of 45 km/h and an average spacing of 30 m between vehicles, the capacity is
Choose your answer for question 15
Answer and explanation

Correct answer: D

C = 1000 × 45 / 30 = 1500 vehicles per hour.

Question 16 · Civil Engineering (SSC JE) · Transportation Engineering
A carriageway 3.75 m wide has a camber of 1 in 50. The crown is higher than the edges by about
Choose your answer for question 16
Answer and explanation

Correct answer: B

Rise = (W/2)/s = 1.875/50 = 0.0375 m = 37.5 mm.

Question 17 · Civil Engineering (SSC JE) · Transportation Engineering
A broad gauge track uses 13 m rails with a sleeper density of M + 7 (M = rail length in metres). The approximate number of sleepers in a 52 km length of track is
Choose your answer for question 17
Answer and explanation

Correct answer: A

Sleepers per rail = 13 + 7 = 20. Rails in 52 km = 52000/13 = 4000. Sleepers ≈ 80000.

Question 18 · Civil Engineering (SSC JE) · Transportation Engineering
A road starts at RL 102.25 m and climbs a uniform gradient of +4 percent. The RL of the road after 150 m is
Choose your answer for question 18
Answer and explanation

Correct answer: A

RL = 102.25 + (4/100) × 150 = 108.25 m.

Question 19 · Civil Engineering (SSC JE) · Transportation Engineering
In a test on road aggregate, the 400 g passed the 2.36 mm sieve after crushing a 5000 g sample. The aggregate crushing value is
Choose your answer for question 19
Answer and explanation

Correct answer: A

Value = 400/5000 × 100 = 8 percent.

Question 20 · Civil Engineering (SSC JE) · Transportation Engineering
A broad gauge track uses 13 m rails with a sleeper density of M + 7 (M = rail length in metres). The approximate number of sleepers in a 65 km length of track is
Choose your answer for question 20
Answer and explanation

Correct answer: B

Sleepers per rail = 13 + 7 = 20. Rails in 65 km = 65000/13 = 5000. Sleepers ≈ 100000.

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