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Exam Review

Key Facts: BTSC JE Civil Exam

100 MCQs

Total questions covering Civil Engineering and General Studies

BTSC Exam Pattern

120 Minutes

Total duration allowed for the examination

BTSC Syllabus Guidelines

₹100

Uniform application fee for all candidates under the 2025/2026 drive

BTSC Fee Notification

0.25 Marks

Deduction for each incorrect response

BTSC Marking Scheme

The BTSC JE Civil exam consists of 100 multiple-choice questions to be completed in 120 minutes. The test has negative marking of 0.25 marks for incorrect responses, and features an application fee of ₹100 for all candidates.

Sample BTSC JE Civil Practice Questions

Try these sample questions to review concepts for the BTSC JE Civil exam. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.

1Which Bogue's compound is responsible for the early strength of Portland cement within the first 24 hours of hydration?
A.Tricalcium aluminate (C3A)
B.Tricalcium silicate (C3S)
C.Dicalcium silicate (C2S)
D.Tetracalcium aluminoferrite (C4AF)
Explanation: Tricalcium silicate (C3S) hydrates rapidly and is primarily responsible for the early strength of cement, particularly within the first week. It generates high heat of hydration and dominates early stage structural strength. C2S, on the other hand, is responsible for the progressive later-age strength.
2Which apparatus is used to determine the soundness of cement due to excess lime?
A.Vicat apparatus
B.Blaine's air permeability apparatus
C.Le Chatelier apparatus
D.Gillmore needle apparatus
Explanation: The Le Chatelier apparatus is used to measure the soundness of cement caused by the presence of excess lime. Soundness is crucial as it indicates the cement's ability to retain its volume after setting. Soundness due to magnesia is measured separately using an autoclave test.
3What is the standard diameter and length of the plunger used in the Vicat apparatus for determining the normal consistency of cement?
A.10 mm diameter and 50 mm length
B.5 mm diameter and 30 mm length
C.1 mm square needle and 50 mm length
D.10 mm diameter and 10 mm length
Explanation: For testing the normal consistency of cement, the Vicat apparatus utilizes a non-absorbent, polished metal plunger of 10 mm diameter and 50 mm length. Consistency is reached when the plunger penetrates the paste to a depth of 33 to 35 mm from the top of the mold. Other attachments include a 1 mm needle for initial set and an annular collar for final set.
4For mass concrete construction in dams, what is the recommended range of concrete slump value to ensure proper placement and compaction?
A.100 to 150 mm
B.75 to 100 mm
C.0 to 10 mm
D.25 to 50 mm
Explanation: Mass concrete work, such as in gravity dams, requires very low workability because it is compacted using heavy internal vibrators. The recommended slump value ranges from 25 to 50 mm. Using low-slump concrete limits the water content, which helps control thermal cracking by minimizing cement usage and heat generation.
5Which of the following compounds is commonly added to concrete to act as a retarder, delaying the hydration and setting processes?
A.Calcium chloride (CaCl2)
B.Gypsum (Calcium sulphate)
C.Sodium silicate
D.Aluminium powder
Explanation: Gypsum (Calcium sulphate dihydrate) is added during clinker grinding to act as a retarder. It delays the setting process of cement by reacting with C3A to form calcium sulfoaluminate (ettringite), which wraps around the aluminate particles and prevents flash setting.
6At what percentage of moisture content does the bulking of sand typically reach its maximum volume expansion?
A.10% to 12%
B.1% to 2%
C.4% to 6%
D.15% to 20%
Explanation: The bulking of sand is the increase in its volume caused by a thin film of water forming around sand particles due to surface tension. It typically reaches its maximum volume expansion (around 20% to 30% increase) at a moisture content of 4% to 6%. Beyond this moisture range, the water film collapses and the volume decreases back toward its dry state.
7What is the minimum compressive strength required for a first-class brick according to Indian Standard specifications (IS 1077)?
A.3.5 N/mm²
B.7.0 N/mm²
C.15.0 N/mm²
D.10.5 N/mm²
Explanation: According to IS 1077, class 10.5 bricks (commonly known as first-class bricks) must have a minimum compressive strength of 10.5 N/mm² (or roughly 105 kg/cm²). These bricks are well-burnt, standard in size, and should not absorb more than 20% of their dry weight in water when immersed for 24 hours.
8What causes the phenomenon of efflorescence in clay building bricks?
A.Presence of soluble salts in the brick clay
B.High silica content in the brick clay
C.Under-burning of bricks in the kiln
D.Excess iron oxide present in the clay
Explanation: Efflorescence is caused by the presence of soluble salts (such as sulfates and carbonates of sodium, potassium, calcium, and magnesium) in the brick's raw clay. When the brick absorbs moisture, these salts dissolve and subsequently migrate to the surface as water evaporates, leaving behind a white crystalline deposit.
9In the manufacturing process of clay bricks, what is the primary purpose of using a pug mill?
A.Drying the molded wet bricks
B.Tempering or kneading the brick earth
C.Burning the bricks to maturity
D.Crushing the raw clay lumps
Explanation: A pug mill is used during the preparation of clay for tempering or kneading. The raw clay is mixed with water and worked inside the pug mill to form a plastic, homogeneous mass suitable for molding into bricks. This mechanical working ensures a consistent mixture and enhances workability.
10Which defect in timber is characterized by the conversion of wood tissue into a fine, dry powder due to the action of fungi in poorly ventilated spaces?
A.Wet rot
B.Heart shake
C.Dry rot
D.Rind gall
Explanation: Dry rot is a defect in timber caused by specific wood-destroying fungi (like Serpula lacrymans). It occurs in areas with lack of ventilation, dampness, and darkness. The fungi eat away the cellulose, reducing the structural timber to a dry, brittle, and powdery mass.

About the BTSC JE Civil Exam

The BTSC JE Civil exam is conducted for recruiting Junior Engineers across various state government engineering departments in Bihar. This practice test contains exactly 100 multiple-choice questions matching the official exam distribution: 80 questions from Civil Engineering (including Building Materials, Surveying, Soil Mechanics, Fluid Mechanics, Concrete Construction & RCC, and Structural Mechanics) and 20 questions from General Studies (including Bihar General Knowledge, General Science, and Polity). Each question has detailed step-by-step mathematical explanations where relevant.

Exam sponsor: Bihar Technical Service Commission (BTSC). The requirements and fees below concern the certification or admission exam, separate from our free practice resources.

Questions

100 questions

Time Limit

120 minutes

Passing Score

40% for General

Exam / Certification Fees

₹100 for all candidates

Exam sponsor website

Reported exam pass rate: Competitive. Selection is determined by CBT written score (75% weightage) and optional contractual experience (25% weightage). Exam sponsor website

Fees, eligibility, and exam policies can change. Confirm them with the exam sponsor before applying or paying.

Our practice resources: topics covered

We aim to reflect publicly available exam outlines and topic information in our study resources. Coverage, format, and difficulty may differ from the actual exam, and we cannot guarantee that every detail is accurate or current. Confirm exam requirements, fees, and policies with the official exam sponsor.

80%

Civil Engineering Core

Building materials, surveying, soil mechanics, fluid mechanics, concrete construction & RCC, and structural mechanics.

20%

General Studies & Science

History and geography of Bihar, river systems, demography, panchayati raj, fundamental rights, and matriculation-level physics, chemistry, and biology.

Preparing for the BTSC JE Civil Exam

What You Need to Know

  • Passing score: 40% for General
  • Exam length: 100 questions
  • Time limit: 120 minutes
  • Exam / certification fees: ₹100 for all candidates Official sources

Using Our Practice Resources

  • Work through all 100 available questions
  • Review every answer and explanation
  • Track weak areas and revisit them
  • Use our AI tutor for tough concepts

BTSC JE Civil: Suggested Study Strategy

1Dedicate significant preparation time to Civil Engineering core subjects as they make up 80% of the exam weightage.
2Work through quantitative engineering calculations step-by-step, focusing on formula recall for soil phase relationships, head losses, and RC beam analysis.
3Thoroughly study Bihar's river network, history of the independence movement, and key demographic markers from the latest census data.
4Keep track of time while solving practice papers: you have only 120 minutes to solve 100 questions, many of which contain mathematical calculations.
5Remember that negative marking is active; avoid guessing on questions unless you can confidently eliminate two options.

Frequently Asked Questions

Is there negative marking in the BTSC JE Civil Exam?

Yes, there is negative marking. For every correct answer, you are awarded 1 mark, and for every incorrect answer, 0.25 marks will be deducted.

What is the weightage breakdown for final selection?

The final merit list is prepared out of 100 marks. The written CBT exam carries 75% weightage (maximum 75 marks), and work experience as a contractual JE under the Bihar Government carries 25% weightage (5 marks per year, up to 25 marks).

What is the application fee for the BTSC JE 2025/2026 drive?

The application fee is ₹100 for all candidates according to the official notification guidelines.

What is the minimum educational qualification?

Candidates must possess a 3-year Diploma in Civil Engineering from an AICTE-recognized polytechnic institution or university.

What topics are covered in the General Studies section?

The General Studies section covers Bihar geography, historical events, state administration, river systems, and basic sciences such as Physics, Chemistry, and Biology at a 10th-grade level.