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100+ Free DRDO CEPTAM STA-B Practice Questions

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DRDO CEPTAM Technician A Examination

Practice Questions
2026 Statistics

Key Facts: DRDO CEPTAM STA-B Exam

150

Exam Questions

DRDO CEPTAM Scheme

120 Mins

Exam Duration

DRDO CEPTAM Scheme

−0.25

Negative Marking per Wrong Answer

DRDO CEPTAM-11 Scheme

40%

Passing Score (35% SC/ST)

DRDO CEPTAM Notification

A competitive national DRDO CEPTAM recruitment exam. Tier-I screens with 150 MCQs in 120 minutes across Science, English, Quant, and Reasoning. Final merit is based on Tier-II.

Sample DRDO CEPTAM STA-B Practice Questions

Try these sample questions to test your DRDO CEPTAM STA-B exam readiness. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.

1What is the value of 15% of 460 + 24% of 650?
A.215
B.225
C.235
D.245
Explanation: To solve, calculate each percentage separately: 15% of 460 is 0.15 * 460 = 69. 24% of 650 is 0.24 * 650 = 156. Summing these values gives 69 + 156 = 225.
2The ratio of two numbers is 3:4. If their Least Common Multiple (LCM) is 180, what is the sum of the two numbers?
A.90
B.135
C.120
D.105
Explanation: Let the two numbers be 3x and 4x, where x is their Highest Common Factor (HCF). The LCM of 3x and 4x is 12x. Given 12x = 180, we find x = 15. The sum of the two numbers is 3x + 4x = 7x, which is 7 * 15 = 105.
3The average of 5 consecutive odd numbers is 61. What is the difference between the highest and lowest of these numbers?
A.8
B.6
C.10
D.12
Explanation: For any set of consecutive odd numbers, the numbers can be represented as x, x+2, x+4, x+6, and x+8. The difference between the highest (x+8) and the lowest (x) is always 8, regardless of their actual values or average.
4A technical textbook is sold for ₹720 at a profit of 20%. What was the cost price of the textbook?
A.₹580
B.₹620
C.₹640
D.₹600
Explanation: The Selling Price (SP) is related to the Cost Price (CP) by the formula: SP = CP * (1 + Profit%). Given SP = ₹720 and Profit% = 20% (or 0.20), we have 720 = CP * 1.2. Solving for CP gives CP = 720 / 1.2 = ₹600.
5If A's salary is 25% more than B's salary, by what percentage is B's salary less than A's salary?
A.15%
B.30%
C.25%
D.20%
Explanation: Let B's salary be 100. Then A's salary is 125. The difference is 25. B's salary is less than A's salary by (25 / 125) * 100% = 20%.
6A can complete a piece of technical work in 10 days, and B can complete it in 15 days. How many days will they take to complete the work if they work together?
A.6 days
B.5 days
C.7 days
D.8 days
Explanation: Using the work rate formula, A's daily rate is 1/10 and B's daily rate is 1/15. Together, their daily rate is 1/10 + 1/15 = (3 + 2)/30 = 5/30 = 1/6. The time taken to complete the work is the reciprocal of the combined rate, which is 6 days.
7A sum of money doubles itself in 8 years at simple interest. What is the rate of interest per annum?
A.10%
B.15%
C.16.6%
D.12.5%
Explanation: If a sum P doubles, the Simple Interest (SI) earned is equal to P. Using the formula SI = (P * R * T) / 100, we get P = (P * R * 8) / 100. Simplifying this yields 8R = 100, so R = 100 / 8 = 12.5% per annum.
8Find the compound interest on ₹8,000 at 10% per annum for 1.5 years, if the interest is compounded half-yearly.
A.₹1,200
B.₹1,382
C.₹1,324
D.₹1,261
Explanation: For half-yearly compounding, the rate is halved and the number of periods is doubled: Rate = 10% / 2 = 5% per half-year; Time = 1.5 years * 2 = 3 half-years. The amount A = P * (1 + R/100)^N = 8000 * (1.05)^3 = 8000 * 1.157625 = ₹9,261. The Compound Interest is A - P = 9261 - 8000 = ₹1,261.
9A and B can do a work in 12 days, B and C in 15 days, and C and A in 20 days. In how many days can they complete the work if they all work together?
A.10 days
B.8 days
C.12 days
D.15 days
Explanation: Adding their daily rates gives: 2(A + B + C) = 1/12 + 1/15 + 1/20 = (5 + 4 + 3) / 60 = 12 / 60 = 1/5. Thus, the rate of A + B + C working together is (1/5) / 2 = 1/10. This means they will take 10 days to complete the work together.
10A train 150 meters long crosses a bridge 250 meters long in 20 seconds. What is the speed of the train in km/h?
A.60 km/h
B.90 km/h
C.80 km/h
D.72 km/h
Explanation: The total distance to cross the bridge is the length of the train plus the length of the bridge: 150m + 250m = 400m. The speed in m/s is Distance / Time = 400m / 20s = 20 m/s. Converting this to km/h gives 20 * (18 / 5) = 72 km/h.

About the DRDO CEPTAM STA-B Exam

The DRDO CEPTAM STA-B Exam is a highly sought-after engineering and science recruitment test in India. It is held in two tiers: Tier-1 is a common screening test evaluating general aptitude, awareness, and basic sciences, while Tier-2 tests core discipline knowledge. Selection is based entirely on Tier-2 merit.

Assessment

Tier-I (common CBT): General Science 40 Q, General English 30 Q, Quantitative Aptitude/General Maths 40 Q, General Intelligence & Reasoning 40 Q — 150 Q / 150 marks / 120 minutes. Tier-II is discipline-specific and out of scope for this practice bank.

Time Limit

120 minutes

Passing Score

40% (35% for SC/ST)

Exam Fee

₹750 for General/OBC/EWS/MSP, ₹500 for Reserved (refundable if appearing in Tier-I) (Defence Research and Development Organisation (DRDO) - CEPTAM)

DRDO CEPTAM STA-B Exam Content Outline

40/150 (≈27%)

General Science

Physics, chemistry, and biology concepts up to Class 10 CBSE level.

30/150 (20%)

General English

Grammar, spelling, spotting errors, vocabulary, and basic sentence improvement.

40/150 (≈27%)

Quantitative Aptitude/General Maths

Arithmetic, elementary algebra, geometry, mensuration, and basic data interpretation.

40/150 (≈27%)

General Intelligence & Reasoning Ability

Verbal and non-verbal reasoning, series, analogies, coding-decoding, and seating arrangements.

How to Pass the DRDO CEPTAM STA-B Exam

What You Need to Know

  • Passing score: 40% (35% for SC/ST)
  • Assessment: Tier-I (common CBT): General Science 40 Q, General English 30 Q, Quantitative Aptitude/General Maths 40 Q, General Intelligence & Reasoning 40 Q — 150 Q / 150 marks / 120 minutes. Tier-II is discipline-specific and out of scope for this practice bank.
  • Time limit: 120 minutes
  • Exam fee: ₹750 for General/OBC/EWS/MSP, ₹500 for Reserved (refundable if appearing in Tier-I)

Keys to Passing

  • Complete 500+ practice questions
  • Score 80%+ consistently before scheduling
  • Focus on highest-weighted sections
  • Use our AI tutor for tough concepts

DRDO CEPTAM STA-B Study Tips from Top Performers

1Prioritize General Science, Quantitative Aptitude, and Reasoning (40 questions each on Tier-I) while keeping English sharp (30 questions).
2Revise Class 10 Physics, Chemistry, and Biology thoroughly — General Science is high-weight and highly scoring.
3Practice arithmetic speed daily: percentages, ratio, averages, time-work, and interest problems.
4Solve full-length sets under a 120-minute timer to match the official Tier-I CBT duration.
5Study your technical branch subjects in parallel — Tier-II (discipline-specific) decides final selection.

Frequently Asked Questions

Is there any negative marking in the DRDO CEPTAM STA-B exam?

CEPTAM-11 Tier-I and Tier-II CBTs apply negative marking of 0.25 marks for each incorrect answer. Unattempted questions carry no penalty.

What is the educational eligibility for the STA-B post?

Candidates must possess a Bachelor's degree in Science (B.Sc.) or a 3-year Diploma in Engineering/Technology/Computer Science in the relevant discipline. B.Tech/B.E. degree holders without a diploma are generally not eligible.

Does the Tier-1 score count towards final selection?

No, Tier-1 is purely a screening test to shortlist candidates for Tier-2 in a 1:8 ratio. The final merit list is prepared based solely on marks secured in the Tier-2 exam.

What is the application fee for the DRDO CEPTAM exam?

For STA-B under CEPTAM-11, UR/OBC/EWS/MSP candidates pay ₹750 total (₹250 non-refundable + ₹500 refundable). Women, SC, ST, PwBD, and eligible Ex-Servicemen pay ₹500 (refundable portion only). The refundable ₹500 is returned to candidates who appear in Tier-I CBT.

What is the age limit for DRDO CEPTAM STA-B?

Candidates must be between 18 and 28 years of age. Standard age relaxations apply for SC/ST/OBC/PwBD/ESM candidates as per government rules.