DRDO CEPTAM-11 (Technical) | Tier-I CBT (Screening Test)

DRDO CEPTAM-11 Tier-I: 16-question practice mock

A compact DRDO CEPTAM-11 Tier-I screening practice mock: 16 original questions across General Science, English, Quantitative Aptitude and Reasoning — common content for STA-B and Technician-A — each with a worked solution. 0.25 marks deducted per wrong answer.

Before you start

16 questions in 20 minutes on a single clock — a short drill, not the full 150-question Tier-I paper.
Each question carries 1 mark and 0.25 marks are deducted for a wrong answer, matching the CEPTAM-11 Tier-I scheme.
Questions model the common screening sections, not trade-specific Tier-II content. Every question is original with a worked solution shown after you submit.

Sections in this test

Section	Questions
General ScienceGeneral Science	4
General EnglishEnglish Language	3
Quantitative AptitudeQuantitative Aptitude	5
General Intelligence and ReasoningGeneral Intelligence & Reasoning	4

Sample questions with worked solutions

A few questions from this test, with the answer key and the method behind it. The full set of 16 runs under a timer, and every solution is on the analysis screen once you submit.

General Science · solved example

Which organelle is known as the 'powerhouse of the cell'?

MitochondriaCorrect
Ribosome
Golgi body
Lysosome

Solution

Mitochondria produce ATP through cellular respiration, earning the nickname 'powerhouse of the cell'. Ribosomes make proteins; Golgi bodies package them; lysosomes digest waste.

English Language · solved example

Choose the word most similar in meaning to: RELIABLE

DependableCorrect
Uncertain
Fragile
Temporary

Solution

'Reliable' means trustworthy and consistent. 'Dependable' is the nearest synonym. The other options suggest unreliability or weakness.

Quantitative Aptitude · solved example

A number is increased by 20% and then decreased by 20%. What is the net change?

4% decreaseCorrect
No change
4% increase
20% decrease

Solution

Start with 100. After +20% it becomes 120; after −20% of 120 it becomes 96. Net change = −4%, a 4% decrease. Equal ± percentages on different bases never cancel.

General Intelligence & Reasoning · solved example

Statements: All metals are conductors. Some conductors are liquids. Conclusions: I. Some metals are liquids. II. Some liquids are conductors. Which follows?

Only II followsCorrect
Only I follows
Both I and II follow
Neither follows

Solution

Conclusion I is not necessarily true — metals being conductors does not guarantee any metal is a liquid. Conclusion II follows because some conductors are liquids, so some liquids are certainly conductors.

General Science · solved example

What is the boiling point of water at standard atmospheric pressure?

100 °CCorrect
0 °C
273 °C
50 °C

Solution

At standard atmospheric pressure (1 atm), water boils at 100 °C. Zero °C is the freezing point.

How this test is marked

Correct answer

Wrong answer

-0.25

Unanswered

Because a blank carries no penalty, guessing only pays when you can eliminate at least two options. The analysis screen after the test shows you exactly where guessing cost you marks.