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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)

Building Materials

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Concrete Technology and RCC

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Construction Management

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Environmental Engineering

896 free questions →Civil Engineering (SSC JE)

Estimating, Costing and Valuation

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Soil Mechanics and Foundations

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Surveying

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Electrical Machines

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Power Electronics and Drives

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Power Systems

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Signals and Systems

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Utilization of Electrical Energy

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IC Engines

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Machine Design

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Power Plant Engineering

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Question 1 · Civil Engineering (SSC JE) · Construction Management
PERT uses time estimates which are
Choose your answer for question 1
Answer and explanation

Correct answer: C

PERT is probabilistic. Each activity has optimistic (to), most likely (tm) and pessimistic (tp) times.

Question 2 · Civil Engineering (SSC JE) · Construction Management
In PERT, an activity has optimistic, most likely and pessimistic times of 4, 6 and 14 days. Its expected time is
Choose your answer for question 2
Answer and explanation

Correct answer: A

te = (to + 4tm + tp)/6 = (4 + 24 + 14)/6 = 42/6 = 7 days.

Question 3 · Civil Engineering (SSC JE) · Construction Management
The activities on the critical path have a total float of
Choose your answer for question 3
Answer and explanation

Correct answer: B

Critical activities have no slack, so any delay in them delays the whole project.

Question 4 · Civil Engineering (SSC JE) · Construction Management
The bar chart in project planning was introduced by
Choose your answer for question 4
Answer and explanation

Correct answer: B

Gantt charts show activities as bars against a time scale. They do not show interdependencies as clearly as network methods.

Question 5 · Civil Engineering (SSC JE) · Construction Management
In a lump-sum contract, the contractor agrees to
Choose your answer for question 5
Answer and explanation

Correct answer: D

The owner knows the total cost up front, and any change in scope is handled by a variation order.

Question 6 · Civil Engineering (SSC JE) · Construction Management
Crashing of a project network means
Choose your answer for question 6
Answer and explanation

Correct answer: C

The cheapest activities on the critical path are shortened step by step until the target duration is met or no further reduction is possible.

Question 7 · Civil Engineering (SSC JE) · Construction Management
Earnest money is a deposit taken from a tenderer
Choose your answer for question 7
Answer and explanation

Correct answer: A

It is returned to unsuccessful bidders and is converted into part of the security deposit for the successful bidder.

Question 8 · Civil Engineering (SSC JE) · Construction Management
An event in a PERT network is
Choose your answer for question 8
Answer and explanation

Correct answer: A

Events are shown as nodes. Activities are the arrows that consume time.

Question 9 · Civil Engineering (SSC JE) · Construction Management
For an activity, EST = 5, EFT = 9 and LFT = 14 (days). The total float is
Choose your answer for question 9
Answer and explanation

Correct answer: C

Total float = LFT − EFT = 14 − 9 = 5 days.

Question 10 · Civil Engineering (SSC JE) · Construction Management
For hauling and spreading earth over medium distances, the most suitable machine is a
Choose your answer for question 10
Answer and explanation

Correct answer: C

A scraper excavates, hauls and spreads in one cycle. Draglines and clamshells dig and place within their reach.

Question 11 · Civil Engineering (SSC JE) · Construction Management
In a PERT network, an activity has optimistic, most likely and pessimistic times of 2, 6 and 16 days. The expected time is
Choose your answer for question 11
Answer and explanation

Correct answer: D

te = (to + 4tm + tp)/6 = (2 + 24 + 16)/6 = 7 days.

Question 12 · Civil Engineering (SSC JE) · Construction Management
A project needs an investment of ₹10 lakh and gives a net annual benefit of ₹5 lakh. The simple payback period is
Choose your answer for question 12
Answer and explanation

Correct answer: B

Payback = investment / annual net benefit = 10/5 = 2 years.

Question 13 · Civil Engineering (SSC JE) · Construction Management
A work of 300 units is to be done by labourers each completing 8 units per day. With 8 labourers working together, the time required is
Choose your answer for question 13
Answer and explanation

Correct answer: A

Man-days = 300/8 = 37.5. Days = 37.5/8 = 4.7.

Question 14 · Civil Engineering (SSC JE) · Construction Management
A project needs an investment of ₹50 lakh and gives a net annual benefit of ₹4 lakh. The simple payback period is
Choose your answer for question 14
Answer and explanation

Correct answer: C

Payback = investment / annual net benefit = 50/4 = 12.5 years.

Question 15 · Civil Engineering (SSC JE) · Construction Management
The planned quantity of work up to a date is 25 units and 10 units have been completed. The percentage of planned progress achieved is
Choose your answer for question 15
Answer and explanation

Correct answer: C

Progress = 10/25 × 100 = 40 percent.

Question 16 · Civil Engineering (SSC JE) · Construction Management
An excavator has a bucket capacity of 1.25 m³, a bucket fill factor of 0.85, a cycle time of 25 seconds and a job efficiency of 0.8. Its hourly output is about
Choose your answer for question 16
Answer and explanation

Correct answer: A

Output = (3600/cycle) × capacity × fill factor × efficiency = (3600/25) × 1.25 × 0.85 × 0.8 = 122.4 m³/h.

Question 17 · Civil Engineering (SSC JE) · Construction Management
An activity costs ₹50000 in the normal time of 12 days and ₹60000 when crashed to 9 days. The cost slope per day is
Choose your answer for question 17
Answer and explanation

Correct answer: D

Cost slope = (crash cost − normal cost)/(normal time − crash time) = (60000 − 50000)/(12 − 9) = ₹3333 per day.

Question 18 · Civil Engineering (SSC JE) · Construction Management
A PERT activity has an optimistic time of 6 days and a pessimistic time of 15 days. Its variance is
Choose your answer for question 18
Answer and explanation

Correct answer: A

σ = (tp − to)/6 = (15 − 6)/6 = 1.5. Variance = σ² = 2.25.

Question 19 · Civil Engineering (SSC JE) · Construction Management
A PERT activity has an optimistic time of 6 days and a pessimistic time of 18 days. Its standard deviation is
Choose your answer for question 19
Answer and explanation

Correct answer: B

σ = (tp − to)/6 = (18 − 6)/6 = 2. Variance = σ² = 4.

Question 20 · Civil Engineering (SSC JE) · Construction Management
A machine costs ₹60,00,000, has a salvage value of ₹5,00,000 and a service life of 15000 hours. The straight line depreciation per operating hour is
Choose your answer for question 20
Answer and explanation

Correct answer: B

Depreciation per hour = (6000000 − 500000)/15000 = ₹366.67.

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