SSC first · CGL and related exams

SSC · Industrial Engineering, Metrology and Materials practice

Start with free questions. Take a timed mock. Find your weak topics and build a practice session to improve them.

SSC mock testsPrevious-year questionsTest seriesSSC CGL exam guide

Previous-year papers · timed practice

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.

Choose your next topic

These topics contain published free SSC questions. Counts reflect the selected language and paper filters. Archived papers show their source and key status above.

Englishहिन्दीAll free questionsBrowse papers by exam and year
Civil Engineering (SSC JE)

Building Materials

1456 free questions →Civil Engineering (SSC JE)

Concrete Technology and RCC

1120 free questions →Civil Engineering (SSC JE)

Construction Management

560 free questions →Civil Engineering (SSC JE)

Environmental Engineering

896 free questions →Civil Engineering (SSC JE)

Estimating, Costing and Valuation

672 free questions →Civil Engineering (SSC JE)

Fluid Mechanics and Hydraulics

1008 free questions →Civil Engineering (SSC JE)

Hydrology and Irrigation

896 free questions →Civil Engineering (SSC JE)

Soil Mechanics and Foundations

896 free questions →Civil Engineering (SSC JE)

Steel Structures

560 free questions →Civil Engineering (SSC JE)

Strength of Materials and Structural Analysis

1568 free questions →Civil Engineering (SSC JE)

Surveying

784 free questions →Civil Engineering (SSC JE)

Transportation Engineering

784 free questions →Electrical Engineering (SSC JE)

Analog and Digital Electronics

896 free questions →Electrical Engineering (SSC JE)

Basic Electrical Engineering

1344 free questions →Electrical Engineering (SSC JE)

Circuit Theory and Networks

1568 free questions →Electrical Engineering (SSC JE)

Control Systems

672 free questions →Electrical Engineering (SSC JE)

Electrical Machines

2016 free questions →Electrical Engineering (SSC JE)

Electrical Measurements and Instruments

1120 free questions →Electrical Engineering (SSC JE)

Electromagnetism and Magnetic Circuits

448 free questions →Electrical Engineering (SSC JE)

Power Electronics and Drives

672 free questions →Electrical Engineering (SSC JE)

Power Systems

1568 free questions →Electrical Engineering (SSC JE)

Signals and Systems

448 free questions →Electrical Engineering (SSC JE)

Utilization of Electrical Energy

448 free questions →English Language

Grammar and Vocabulary

2028 free questions →English Language

SSC PYQ - English Language

469 free questions →English Language

Vocabulary

13736 free questions →General Awareness

Environment and Ecology

330 free questions →General Awareness

General Science

2983 free questions →General Awareness

Geography

1921 free questions →General Awareness

History and Culture

5348 free questions →General Awareness

Indian Economy

1313 free questions →General Awareness

Indian Polity and Governance

3105 free questions →General Awareness

SSC PYQ - General Awareness

343 free questions →General Awareness

Science and Technology

495 free questions →General Awareness

Static GK

9055 free questions →Mechanical Engineering (SSC JE)

Engineering Mechanics

448 free questions →Mechanical Engineering (SSC JE)

Fluid Mechanics and Machines

1568 free questions →Mechanical Engineering (SSC JE)

Heat Transfer

672 free questions →Mechanical Engineering (SSC JE)

IC Engines

672 free questions →Mechanical Engineering (SSC JE)

Industrial Engineering, Metrology and Materials

448 free questions →Mechanical Engineering (SSC JE)

Machine Design

896 free questions →Mechanical Engineering (SSC JE)

Manufacturing and Production Engineering

1344 free questions →Mechanical Engineering (SSC JE)

Power Plant Engineering

896 free questions →Mechanical Engineering (SSC JE)

Refrigeration and Air Conditioning

672 free questions →Mechanical Engineering (SSC JE)

Strength of Materials

1120 free questions →Mechanical Engineering (SSC JE)

Theory of Machines

1120 free questions →Mechanical Engineering (SSC JE)

Thermodynamics

1344 free questions →Quantitative Aptitude

Algebra

2879 free questions →Quantitative Aptitude

Arithmetic

12630 free questions →Quantitative Aptitude

Averages

1748 free questions →Quantitative Aptitude

Data Interpretation

1225 free questions →Quantitative Aptitude

Interest

3311 free questions →Quantitative Aptitude

Percentage

2781 free questions →Quantitative Aptitude

Profit and Loss

3224 free questions →Quantitative Aptitude

Ratio and Proportion

2202 free questions →Quantitative Aptitude

SSC PYQ - Quantitative Aptitude

295 free questions →Reasoning Ability

Analogy

666 free questions →Reasoning Ability

Blood Relations

499 free questions →Reasoning Ability

Calendar and Clock

498 free questions →Reasoning Ability

Classification

665 free questions →Reasoning Ability

Coding-Decoding

666 free questions →Reasoning Ability

Direction Sense

499 free questions →Reasoning Ability

Logical Reasoning

21002 free questions →Reasoning Ability

Mathematical Operations

499 free questions →Reasoning Ability

Number Series

11308 free questions →Reasoning Ability

Number and Letter Series

833 free questions →Reasoning Ability

Ranking and Order

333 free questions →Reasoning Ability

SSC PYQ - Reasoning Ability

356 free questions →Reasoning Ability

Statement and Conclusion

333 free questions →Reasoning Ability

Syllogism

499 free questions →

Try a free practice session

No account needed. This session stays in this browser tab; sign in for timed tests, bookmarks and saved performance.

Question 1 · Mechanical Engineering (SSC JE) · Industrial Engineering, Metrology and Materials
In a vernier caliper, 50 vernier divisions coincide with 49 main scale divisions, and one main scale division is 1 mm. The least count is
Choose your answer for question 1
Answer and explanation

Correct answer: A

LC = 1 MSD − 1 VSD = 1 − 49/50 = 0.02 mm.

Question 2 · Mechanical Engineering (SSC JE) · Industrial Engineering, Metrology and Materials
In limits and fits, tolerance is
Choose your answer for question 2
Answer and explanation

Correct answer: A

It is the permissible variation in a dimension, whereas allowance is the intended difference between mating parts.

Question 3 · Mechanical Engineering (SSC JE) · Industrial Engineering, Metrology and Materials
The Economic Order Quantity (EOQ) is given by
Choose your answer for question 3
Answer and explanation

Correct answer: C

D is annual demand, S the ordering cost per order and H the holding cost per unit per year.

Question 4 · Mechanical Engineering (SSC JE) · Industrial Engineering, Metrology and Materials
Stainless steel contains a minimum chromium content of about
Choose your answer for question 4
Answer and explanation

Correct answer: A

About 10.5 to 11 percent chromium forms a thin self-healing chromium oxide layer, which resists corrosion.

Question 5 · Mechanical Engineering (SSC JE) · Industrial Engineering, Metrology and Materials
A product has a fixed cost of ₹2,00,000, a selling price of ₹50 per unit and a variable cost of ₹30 per unit. The break-even quantity is
Choose your answer for question 5
Answer and explanation

Correct answer: C

BEP = fixed cost / (price − variable cost) = 2,00,000 / 20 = 10 000 units.

Question 6 · Mechanical Engineering (SSC JE) · Industrial Engineering, Metrology and Materials
Which of the following is a thermosetting plastic?
Choose your answer for question 6
Answer and explanation

Correct answer: C

Thermosets cure with heat into a rigid cross-linked network and cannot be remelted. Nylon, PVC and polythene are thermoplastics.

Question 7 · Mechanical Engineering (SSC JE) · Industrial Engineering, Metrology and Materials
Slip gauges are used
Choose your answer for question 7
Answer and explanation

Correct answer: D

They are rectangular steel or ceramic blocks of accurately known thickness that can be wrung together to build a required length.

Question 8 · Mechanical Engineering (SSC JE) · Industrial Engineering, Metrology and Materials
In statistical quality control, a p-chart is used to monitor
Choose your answer for question 8
Answer and explanation

Correct answer: C

It is an attribute chart. X-bar and R charts are used for measurable (variable) characteristics.

Question 9 · Mechanical Engineering (SSC JE) · Industrial Engineering, Metrology and Materials
The normal time for a job is 10 minutes and a total allowance of 5 percent is given. The standard time is
Choose your answer for question 9
Answer and explanation

Correct answer: C

Standard time = normal time × (1 + allowance) = 10 × 1.05 = 10.5 min.

Question 10 · Mechanical Engineering (SSC JE) · Industrial Engineering, Metrology and Materials
The normal time for a job is 3 minutes and a total allowance of 5 percent is given. The standard time is
Choose your answer for question 10
Answer and explanation

Correct answer: A

Standard time = normal time × (1 + allowance) = 3 × 1.05 = 3.15 min.

Question 11 · Mechanical Engineering (SSC JE) · Industrial Engineering, Metrology and Materials
The upper and lower limits of a shaft dimension are 16.06 mm and 15.95 mm. The tolerance is
Choose your answer for question 11
Answer and explanation

Correct answer: A

Tolerance = upper limit − lower limit = 16.06 − 15.95 = 0.11 mm.

Question 12 · Mechanical Engineering (SSC JE) · Industrial Engineering, Metrology and Materials
A firm has a fixed cost of ₹1,00,000, a selling price of ₹60 per unit and a variable cost of ₹25 per unit. The break-even volume is
Choose your answer for question 12
Answer and explanation

Correct answer: D

BEP = F/(p − v) = 100000/(60 − 25) = 2857 units.

Question 13 · Mechanical Engineering (SSC JE) · Industrial Engineering, Metrology and Materials
For an X̄ chart with n = 6 (A2 = 0.483), the grand mean is 20 and the mean range is 3. The lower control limit is
Choose your answer for question 13
Answer and explanation

Correct answer: A

LCL = X̄̄ − A2 R̄ = 20 − 0.483 × 3 = 18.551.

Question 14 · Mechanical Engineering (SSC JE) · Industrial Engineering, Metrology and Materials
For an X̄ chart with n = 4 (A2 = 0.729), the grand mean is 20 and the mean range is 2. The upper control limit is
Choose your answer for question 14
Answer and explanation

Correct answer: D

UCL = X̄̄ + A2 R̄ = 20 + 0.729 × 2 = 21.458.

Question 15 · Mechanical Engineering (SSC JE) · Industrial Engineering, Metrology and Materials
Two components with reliabilities 0.95 and 0.95 are connected in parallel. The system reliability is
Choose your answer for question 15
Answer and explanation

Correct answer: D

R = 1 − (1 − R1)(1 − R2) = 1 − 0.05 × 0.05 = 0.9975.

Question 16 · Mechanical Engineering (SSC JE) · Industrial Engineering, Metrology and Materials
Two components with reliabilities 0.98 and 0.9 are connected in parallel. The system reliability is
Choose your answer for question 16
Answer and explanation

Correct answer: A

R = 1 − (1 − R1)(1 − R2) = 1 − 0.02 × 0.1 = 0.998.

Question 17 · Mechanical Engineering (SSC JE) · Industrial Engineering, Metrology and Materials
The annual demand for an item is 1000 units, the ordering cost is ₹400 per order and the holding cost is ₹20 per unit per year. The economic order quantity is about
Choose your answer for question 17
Answer and explanation

Correct answer: A

EOQ = √(2DS/H) = √(2 × 1000 × 400 / 20) = 200 units.

Question 18 · Mechanical Engineering (SSC JE) · Industrial Engineering, Metrology and Materials
A vernier caliper has a main scale division of 1 mm and 100 vernier divisions equal to 99 main scale divisions. Its least count is
Choose your answer for question 18
Answer and explanation

Correct answer: C

LC = 1 MSD/N = 1/100 = 0.01 mm.

Question 19 · Mechanical Engineering (SSC JE) · Industrial Engineering, Metrology and Materials
A firm has a fixed cost of ₹4,00,000, a selling price of ₹80 per unit and a variable cost of ₹30 per unit. The break-even volume is
Choose your answer for question 19
Answer and explanation

Correct answer: B

BEP = F/(p − v) = 400000/(80 − 30) = 8000 units.

Question 20 · Mechanical Engineering (SSC JE) · Industrial Engineering, Metrology and Materials
The upper and lower limits of a shaft dimension are 50.04 mm and 49.96 mm. The tolerance is
Choose your answer for question 20
Answer and explanation

Correct answer: D

Tolerance = upper limit − lower limit = 50.04 − 49.96 = 0.08 mm.

Answer the 20 questions, then check your score.

Take a timed topic mastery test