SSC JE Mock Test 2027: Free Civil, EE, ME & Telecom Series

URGENT CORRECTION / AMBER CALLOUT BOX

• (1) Adda247's "Descriptive Paper-II with Zero Negative Marking" Blunder: Even major mock test portals still print outdated tables claiming SSC JE Paper-II is a "Written Descriptive Examination with no negative marking". Verified official rule: SSC abolished the conventional descriptive Paper-II in 2023. Paper-II is now a 100-question, 300-mark Objective CBT (2 hours) with +3 marks for every correct answer, -1 mark (1/3rd) negative marking for every wrong answer, and an on-screen Virtual Scientific Calculator.
• (2) The "Paper-I + Paper-II = 500 Marks Combined Merit" Myth: Under latest SSC JE notification rules (notified 2 September 2026), Paper-I (200 questions, 200 marks) is now QUALIFYING IN NATURE ONLY (used strictly to shortlist candidates for Paper-II), while Final Merit and Department Allocation (CPWD, CWC, MES, BRO, DoT, IMD) are decided 100% by Normalized Paper-II Marks (out of 300).
• (3) Missing New Technical Streams & Virtual Calculator Practice: SSC expanded SSC JE from 3 branches to 7 Technical Paper Parts (Part A Civil, Part B Electrical, Part C Mechanical, Part D CS/IT, Part E ECE, Part F Physics, and Part G Telecommunication across 13 departments), and provides an on-screen Virtual Scientific Calculator in both CBT stages.

Subject Breakdown: Section I General Intelligence & Reasoning (50 Qs / 50 Marks), Section II General Awareness (50 Qs / 50 Marks), and Section III General Engineering / Technical Stream (100 Qs / 100 Marks from Parts A to G).

Time Management: Open 120-minute timer across all 200 questions without rigid sectional locks.

Qualifying Standard: Minimum qualifying marks are UR 30% (60M), OBC/EWS 25% (50M), and all other categories 20% (40M). Qualifying these marks shortlists you for Paper-II.

Subject Breakdown: 100 Objective MCQs carrying 3 marks each (Total 300 marks) from your selected technical paper part (Parts A to G) within a 120-minute window.

Marking Scheme: +3.00 marks for every correct answer; -1.00 mark deducted for every incorrect answer.

Virtual Calculator Training: Our mock interface embeds a fully functional on-screen Virtual Scientific Calculator, training you to handle logarithmic, trigonometric, and exponential calculations under mouse-click speed pressure.

Minutes 00 to 15 (15 Mins) — General Awareness (50 Qs): Rapid-fire factual recall. Answer known static GK and science facts immediately; skip unknown questions.

Minutes 15 to 53 (38 Mins) — Reasoning Ability (50 Qs): Solve verbal and non-verbal reasoning sets, series, and coding problems. Maintain high speed.

Minutes 53 to 120 (67 Mins) — Technical Stream (100 Qs): Dedicate over half your time to solving the 100 technical questions, prioritizing direct formula and standard theory items first.

Phase 1: One-Liner & Codal Provision MCQs (Q1–Q41 | 28 Mins): Rapidly answer direct theoretical definitions, standard IS-code clauses, and property values.

Phase 2: Single-Formula & Analytical MCQs (Q41–Q80 | 52 Mins): Solve moderate conceptual problems requiring basic formula substitution.

Phase 3: Multi-Step Virtual-Calculator Numericals (Q81–Q100 | 40 Mins): Dedicated time block for complex numericals requiring on-screen Virtual Scientific Calculator operation.

Q1. (RCC Design / IS 456:2000) IS 456:2000 के मुताबिक, सीमांत अवस्था पद्धति में कंक्रीट के लिए आंशिक सुरक्षा गुणांक ($\gamma_c$) का मान कितना तय किया गया है?
According to IS 456:2000, what is the value of the partial safety factor ($\gamma_c$) specified for concrete in the Limit State Method of design?
A. 1.15
B. 1.50 [Correct]
C. 1.80
D. 2.00

Option (Correct): B. 1.50 [Correct] -> Reason: As per IS 456:2000 (Clause 36.4.2), the partial safety factor for material strength of concrete is 1.50, while for steel reinforcement it is 1.15.
Option (Incorrect): A. 1.15 -> Reason: 1.15 is the partial safety factor specified for steel reinforcement, not concrete.
Option (Incorrect): C and D -> Reason: These values exceed standard codal safety margins for material strength.
संकेत: कंक्रीट के लिए सुरक्षा गुणांक 1.50 और इस्पात (Steel) के लिए 1.15 होता है।

Q2. (Soil Mechanics) यदि किसी मृदा का रिक्ति अनुपात (Void Ratio, $e$) 0.5 है और संतृप्ति की मात्रा (Degree of Saturation, $S$) 50% है, तो उस मृदा का जल अंश (Water Content, $w$) ज्ञात कीजिए।
If the void ratio ($e$) of a soil sample is 0.5 and its degree of saturation ($S$) is 50%, find the water content ($w$) of the soil.
A. 15%
B. 25% [Correct]
C. 35%
D. 50%

Option (Correct): B. 25% [Correct] -> Reason: Using the fundamental phase relationship formula $Se = wG$ (assuming full saturation behavior or standard relation $w \times G = S \times e$, or simplified $w = \frac{S \times e}{G}$). For standard problem where specific gravity $G$ is not given, applying standard identity relations where $w = S \times e$ when $G=1$ or direct standard identity: $w = \frac{0.5 \times 0.5}{1} = 0.25 = 25\%$.
Option (Incorrect): A, C, D -> Reason: Calculated incorrectly using wrong phase formula transpositions.
Hint: मृदा यांत्रिकी के मूलभूत संबंध सूत्र $Se = wG$ का प्रयोग करें।

Q3. (Surveying) यदि किसी चेन सर्वेक्षण में रेखा की माप करते समय त्रुटि के कारण मापी गई लंबाई वास्तविक लंबाई से अधिक हो जाती है, तो इस स्थिति में उत्पन्न होने वाली त्रुटि (Error) किस प्रकार की होगी?
If during chain surveying, the measured length of a line exceeds the true length due to measurement error, what type of error is introduced?
A. धनात्मक त्रुटि (Positive Error) [Correct]
B. ऋणात्मक त्रुटि (Negative Error)
C. प्रतिपूरक त्रुटि (Compensating Error)
D. आकस्मिक त्रुटि (Accidental Error)

Option (Correct): A. धनात्मक त्रुटि (Positive Error) [Correct] -> Reason: When measured length is greater than true length ($M > T$), the resulting error ($Error = M - T$) is positive, leading to a negative correction.
Option (Incorrect): B. ऋणात्मक त्रुटि (Negative Error) -> Reason: Negative error occurs when measured length is less than true length ($M < T$).
Option (Incorrect): C and D -> Reason: Compensating errors fluctuate randomly in sign, whereas chain length errors accumulate systematically.
जब मापी गई लंबाई असली लंबाई से ज्यादा होती है, तो धनात्मक त्रुटि होती है।

Q4. (Electrical Machines) 3-phase, 4-pole, 50 Hz प्रेरण मोटर (Induction Motor) के लिए तुल्यकालिक गति (Synchronous Speed, $N_s$) की गणना कीजिए।
Calculate the synchronous speed ($N_s$) for a 3-phase, 4-pole, 50 Hz induction motor.
A. 1000 RPM
B. 1500 RPM [Correct]
C. 3000 RPM
D. 750 RPM

Option (Correct): B. 1500 RPM [Correct] -> Reason: Using the synchronous speed formula $N_s = \frac{120 \times f}{P} = \frac{120 \times 50}{4} = \frac{6000}{4} = 1500\text{ RPM}$.
Option (Incorrect): A. 1000 RPM -> Reason: Corresponds to a 6-pole motor ($120 \times 50 / 6 = 1000$).
Option (Incorrect): C. 3000 RPM -> Reason: Corresponds to a 2-pole motor.
Option (Incorrect): D. 750 RPM -> Reason: Corresponds to an 8-pole motor.
Hint: तुल्यकालिक गति सूत्र $N_s = \frac{120f}{P}$ का प्रयोग करें।

Q5. (Network Theorems) किसी रैखिक द्विपक्षीय नेटवर्क (Linear Bilateral Network) में थेवेनिन तुल्य प्रतिरोध ($R_{th}$) ज्ञात करते समय सभी स्वतंत्र स्रोतों (Independent Sources) के साथ क्या किया जाता है?
When finding the Thevenin equivalent resistance ($R_{th}$) in a linear bilateral network, how are all independent sources treated?
A. खुले परिपथ (Open circuited) रखे जाते हैं
B. उनके आंतरिक प्रतिरोध से प्रतिस्थापित या अपने स्रोतों से निष्क्रिय (Deactivated / Voltage sources shorted, Current sources opened) किए जाते हैं [Correct]
C. अपरिवर्तित रखे जाते हैं
D. उच्च वोल्टेज से जोड़े जाते हैं

Option (Correct): B [Correct] -> Reason: To find $R_{th}$, all independent voltage sources are deactivated by short-circuiting them (setting voltage to zero), and all independent current sources are deactivated by open-circuiting them (setting current to zero).
Option (Incorrect): A, C, D -> Reason: Violate standard Thevenin theorem derivation procedures.
थेवनिन प्रतिरोध निकालते समय वोल्टेज स्रोत को शॉर्ट कर देते हैं और करंट स्रोत को ओपन कर देते हैं।

Q6. (Telecommunication / ECE) दूरसंचार प्रणालियों में प्रयुक्त 'ऑप्टिकल फाइबर' (Optical Fiber) किस भौतिक सिद्धांत पर कार्य करता है?
Optical fibers used in telecommunication systems operate on which fundamental physical principle?
A. प्रकाश का अपवर्तन (Refraction)
B. पूर्ण आंतरिक परावर्तन (Total Internal Reflection - TIR) [Correct]
C. प्रकाश का प्रकीर्णन (Scattering)
D. विवर्तन (Diffraction)

Option (Correct): B. Total Internal Reflection (TIR) [Correct] -> Reason: Optical fibers guide light signals over long distances by exploiting total internal reflection at the core-cladding boundary.
Option (Incorrect): A. Refraction -> Reason: Refraction causes bending, but signal confinement relies strictly on TIR.
Option (Incorrect): C and D -> Reason: Scattering and diffraction cause signal loss, not transmission guidance.
ऑप्टिकल फाइबर कुल आंतरिक परावर्तन (TIR) के सिद्धांत पर काम करता है।

Q7. (Thermodynamics) ऊष्मागतिकी का कौन सा नियम (Law of Thermodynamics) 'एंट्रॉपी' (Entropy) की अवधारणा को परिभाषित करता है?
Which Law of Thermodynamics defines the concept of 'Entropy'?
A. शून्यवाँ नियम (Zeroth Law)
B. प्रथम नियम (First Law)
C. द्वितीय नियम (Second Law) [Correct]
D. तृतीय नियम (Third Law)

Option (Correct): C. Second Law [Correct] -> Reason: The Second Law of Thermodynamics introduces entropy as a measure of thermal energy unavailability and system irreversibility.
Option (Incorrect): A. शून्यवाँ नियम -> Reason: Defines temperature and thermal equilibrium.
Option (Incorrect): B. प्रथम नियम -> Reason: Defines conservation of energy ($dU = dQ - dW$).
Option (Incorrect): D. तृतीय नियम -> Reason: States that entropy of a pure crystalline substance approaches zero at absolute zero temperature.
एंट्रॉपी का माप और ऊष्मा की अशोध्यता ऊष्मागतिकी का दूसरा नियम बताता है।

Q8. (Fluid Mechanics) यदि किसी तरल का गतिशील श्यानता गुणांक (Dynamic Viscosity) $\mu$ और घनत्व $\rho$ हो, तो उसका गतिज श्यानता (Kinematic Viscosity, $\nu$) किसके बराबर होता है?
If dynamic viscosity is $\mu$ and density is $\rho$, what is the formula for kinematic viscosity ($\nu$)?
A. $\nu = \mu \times \rho$
B. $\nu = \frac{\mu}{\rho}$ [Correct]
C. $\nu = \frac{\rho}{\mu}$
D. $\nu = \sqrt{\mu \rho}$

Option (Correct): B. $\nu = \frac{\mu}{\rho}$ [Correct] -> Reason: Kinematic viscosity is defined as the ratio of dynamic viscosity to fluid density ($\nu = \frac{\mu}{\rho}$), with standard SI units of $\text{m}^2/\text{s}$.
Option (Incorrect): A, C, D -> Reason: Dimensionally incorrect fluid property formulations.
Hint: गतिज श्यानता ($\nu$) श्यानता और घनत्व का अनुपात होती है ($\nu = \mu / \rho$)।

Q9. (Reasoning / Number Series) दी गई संख्या श्रृंखला में लुप्त पद ज्ञात कीजिए: 4, 9, 19, 39, 79, ?
Find the missing term in the given number series: 4, 9, 19, 39, 79, ?
A. 149
B. 159 [Correct]
C. 169
D. 179

Option (Correct): B. 159 [Correct] -> Reason: Pattern is $\times 2 + 1$: $4 \times 2 + 1 = 9$; $9 \times 2 + 1 = 19$; $19 \times 2 + 1 = 39$; $39 \times 2 + 1 = 79$; $79 \times 2 + 1 = 159$.
Option (Incorrect): A, C, D -> Reason: Arithmetically incorrect progression values.
Hint: श्रृंखला में प्रत्येक संख्या पिछली संख्या की दोगुनी होकर 1 जोड़ने पर प्राप्त होती है ($\times 2 + 1$)।

Q10. (General Awareness / Polity) भारतीय संविधान की प्रस्तावना (Preamble) में 'समाजवादी' (Socialist), 'धर्मनिरपेक्ष' (Secular) और 'अखंडता' (Integrity) शब्द किस संविधान संशोधन द्वारा जोड़े गए थे?
By which Constitutional Amendment were the words 'Socialist', 'Secular', and 'Integrity' added to the Preamble of the Indian Constitution?
A. 42वां संविधान संशोधन (42nd Amendment) [Correct]
B. 44वां संविधान संशोधन (44th Amendment)
C. 86वां संविधान संशोधन (86th Amendment)
D. 103वां संविधान संशोधन (103rd Amendment)

Option (Correct): A. 42वां संविधान संशोधन (42nd Amendment) [Correct] -> Reason: The 42nd Constitutional Amendment Act, 1976 is the only instance where the Preamble was amended, adding "Socialist", "Secular", and "Integrity".
Option (Incorrect): B. 44वां संशोधन -> Reason: The 44th Amendment (1978) removed the right to property from fundamental rights.
Option (Incorrect): C and D -> Reason: Deal with education rights and economic reservations respectively.
Hint: 42वें संशोधन (1976) को 'लघु संविधान' कहा जाता है, जिसके तहत प्रस्तावना में संशोधन किया गया था।

Paper-I Qualifying Benchmark (Out of 200): Aim for a raw score of 130–140+ marks in Paper-I mocks. Although Paper-I is qualifying only, scoring high ensures comfortable screening clearance across all engineering branches.

Paper-II CPWD Civil Target Zone (Out of 300): 210–235+ Marks. CPWD Civil remains the #1 choice among engineering aspirants; securing it requires rigorous virtual calculator practice and mastery over IS 456 and Soil Mechanics.

Paper-II Electrical & Mechanical Target Zone (Out of 300): 200–225+ Marks. Electrical and Mechanical departments in CPWD, MES, and CWC require robust accuracy across electrical machines, power systems, and thermodynamics.

1. Navigate to the testing portal at https://mocktestcenter.com/ssc-je-2027/mock-test

2. Use the 5-tab selector at the top of the page to choose your targeted practice mode (Paper-I Screening Mocks, Paper-II 300-Mark Merit Mocks with Virtual Calculator, Shift PYQ Reconstructions, Branch Technical Sprints, or Non-Tech Lab Booster).

3. Review the on-screen briefing detailing the 200-question qualifying format for Paper-I and the 300-mark objective CBT format with virtual calculator for Paper-II.

4. Launch your test session and experience the embedded on-screen Virtual Scientific Calculator CBT simulator.

5. Submit your test to instantly access your All-India rank prediction, branch-wise accuracy breakdown, explanatory answer keys, and AI-driven weak-area analytics.