DSSSB Lab Assistant Exam Pattern, Eligibility
142 topics across 4 subjects. Every question carries a written explanation.
DSSSB has no single Lab Assistant exam. Departments ask for laboratory staff one post code at a time, and each comes with its own qualification. Recent ones are the Health and Family Welfare Department's Lab Assistant (Gr. IV), MCD's Laboratory Assistant, and DPCC's Junior Laboratory Assistant.
The open one is the Delhi Pollution Control Committee's Junior Laboratory Assistant, post code 18/26 under Advertisement No. 02/2026, now 4 posts. Its computer test was held on 6 September 2026 and the result is awaited.
Last checked against the official notification on .
DSSSB Lab Assistant Details
Exam Pattern
These posts use DSSSB's one-tier technical paper: 200 questions in 2 hours. Section A has 100 general questions, 20 each on General Awareness, Reasoning, Arithmetic, Hindi and English. Section B has 100 questions on the subject of the post's qualification. Wrong answers cost 0.25 marks.
The pass mark applies to Section B and to the total, not to Section A on its own. Merit uses both sections.
Eligibility Criteria
| Post (code) | Qualification | Pay |
|---|---|---|
| Junior Laboratory Assistant, DPCC (18/26) | 12th with science and 3 years of lab work, or a science degree | Level 2, ₹19,900–63,200 |
| Laboratory Assistant, MCD (29/24) | 10th with science and a diploma in Medical Laboratory Technology | Level 4, ₹25,500–81,100 |
| Lab Assistant (Gr. IV), H&FW (46/23) | 10th or 12th with science and a diploma in Medical Laboratory Techniques, or 12th vocational MLT | Level 4, ₹25,500–81,100 |
| Laboratory Assistant (Chemistry), Drugs Control (51/24) | Pharmacy or science degree and 1 year in chemical analysis of drugs | Level 4, ₹25,500–81,100 |
The age limit was 18 to 27 years for all four, with the usual DSSSB relaxations.
Selection Process
There is no interview or skill test for these posts. Candidates are ranked on the written test, the top ones upload an e-dossier, and DSSSB nominates them. The department checks documents before the offer.
How to Apply
Apply online at dsssbonline.nic.in within the window in each advertisement. The fee is ₹100; women, SC, ST, PwBD and ex-servicemen are exempt.
Important Dates
| Post code | Advertised | Test | Result |
|---|---|---|---|
| 46/23 (H&FW) | 31 July 2023 | 24 April 2025 | 20 January 2026 |
| 29/24 (MCD) | 5 March 2024 | 28 August 2025 | 16 March 2026 |
| 18/26 (DPCC) | 25 February 2026 | 6 September 2026 | Awaited |
Result
H&FW's 46/23 had 138 vacancies; 2,651 sat the test and 122 were nominated. MCD's 29/24 had 37; 1,304 sat and 35 were nominated. Results and marks are on the DSSSB Results page.
Official Links
Frequently Asked Questions
Is there one DSSSB Lab Assistant exam?
No. Each department's post has its own code, qualification and test.
Do I need a DMLT?
For the hospital and MCD posts, yes. DPCC's Junior Laboratory Assistant takes a science degree, or 12th science with 3 years of lab work.
Is there a practical test?
No. Selection is on the written test alone.
How many DPCC posts are there now?
4, after the corrigendum of 14 October 2026.
General Awareness / General Knowledge (GK) (23)
- Indian Politics
- Indian History
- Indian Economy
- Important Acts of the Parliament of India
- Honours and Awards
- Indian Geography
- Indian Culture
- World Geography
- Famous Places in India
- Famous Personalities
- Books and Authors
- Sports
- Days and Years
- Inventions
- Highest, Longest, Biggest, Largest, Deepest, Smallest of the World
- General Science
- World Currency
- Country Languages
- Technology
- Physics
- Chemistry
- Biology
- Scientific Names of Plants and Animals
Microbiology (30)
- Micro Organisms
- Bacteria Morphology
- Cell Cultures and Characteristics
- Enzymes Regulation
- Microbial Metabolism
- Microbial Genetics
- DNA Replication
- Translation and Regulation
- Microbial Recombination and Gene Transfer
- Immune System
- Antigen Antibody Reaction
- Bacteria
- Streptococcus
- Clostridium
- Actinomycetes and Non Sporing Anaerobes
- Brucella
- Vibrio, Aeromonas and Plesiomonas
- Protozon
- Viruses
- Viruses in Eukaryotes
- Poxviridae and Picronaviridae
- Hepatitis Viruses
- Physical and Chemical Agents
- Microbiology of Soils
- Microbiology of Waste Water
- Microbiology of Foods
- Sauerkraut and Pickles
- Fish and Sea Foods
- Wine and Beer
- Miscellaneous Foods
Quantitative Aptitude (50)
- Number System
- H.C.F. & L.C.M.
- Decimal Fractions
- Simplification
- Square Roots & Cube Roots
- Average
- Problems on Numbers
- Problems on Ages
- Surds & Indices
- Percentage
- Operations on Numbers
- Profit & Loss
- Ratio & Proportion
- Partnership
- Chain Rule
- Time & Work
- Pipes & Cistern
- Time & Distance
- Problems on Trains
- Boats & Streams
- Alligation or Mixture
- Simple Interest
- Compound Interest
- Logarithms
- Area
- Volume & Surface Areas
- Mensuration
- Races & Games of Skill
- Calendar
- Clocks
- Stocks & Shares
- Permutations & Combinations
- Probability
- True Discount
- Banker’s Discount
- Heights & Distances
- Odd Man Out & Series
- Algebra
- Divisibility Rules & Remainder Theorem
- Factorials & Power Cycles
- Progressions (A.P., G.P., H.P.)
- Work & Wages
- Set Theory / Venn Diagrams
- Geometry (Lines, Angles, Triangles, Polygons)
- Coordinate Geometry
- Data Interpretation
- Trigonometry
- Statistics (Mean, Median, Mode)
- Arithmetic Operations
- Quadratic Equations
Reasoning (39)
- Analogy
- Number Series
- Classification
- Series Completion
- Coding-Decoding
- Input Output
- Inequality
- Blood Relation
- Puzzle Test
- Sequential Output Tracing
- Direction Sense Test
- Linear Seating Arrangement
- Circular Seating Arrangement
- Logical Venn Diagrams
- Alphabet Test
- Number, Ranking and Time Sequence Test
- Mathematical Operations
- Logical Sequence of Words
- Arithmetical Reasoning
- Inserting The Missing Character
- Data Sufficiency
- Decision Making
- Assertion and Reason
- Situation Reaction Test
- Verification of Truth of the Statement
- Letter and Symbol Series
- Logic
- Statement - Arguments
- Statement - Assumptions
- Statement - Courses of Action
- Syllogisms
- Statement - Conclusions
- Deriving Conclusions From Passages
- Theme Detection
- Question - Statements
- Miscellaneous Logical Puzzles
- Mirror and Water Images
- Paper Folding and Cutting
- Completion of Incomplete Pattern
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