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DSSSB Junior Scientific Assistant (Chemistry) Syllabus 2026, Exam Pattern
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DSSSB Junior Scientific Assistant (Chemistry) Exam - Hindi200 questions • 120 mins • 200 marks
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DSSSB Junior Scientific Assistant (Chemistry) Syllabus 2026, Exam Pattern
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DSSSB Junior Scientific Assistant (Chemistry) Syllabus 2026, Exam Pattern, Exam Date 2026
Detail Information about DSSSB (Delhi Subordinate Service Selection Board) has published notification 2026 for the recruitment of Junior Scientific Assistant (Chemistry) vacancies. Those Candidates who are Interested to the following vacancy and completed all Eligibility Criteria can read the Notification & Apply Online. In this page we provide the Complete Syllabus of this Recruitment with Latest Update Exam Pattern and the Exam Date also.
DSSSB Junior Scientific Assistant (Chemistry) Syllabus 2026 - Overview
| Recruitment Board | Delhi Subordinate Services Selection Board (DSSSB) |
| Advertisement No. | 23/26 |
| Department | Forensic Science Laboratory |
| Post Name | Junior Scientific Assistant (Chemistry) |
| Vacancies | 37 |
| Application Mode | Online |
| Job Location | Delhi |
| Category | Recruitment |
| Official Website | https://dsssb.delhi.gov.in |
DSSSB Junior Scientific Assistant (Chemistry) Syllabus 2026
General Awareness :
1. History
2. Politics
3. Constitution
4. Sports
5. Art and Culture
6. Geography
7. Economics
8. Everyday Science
9. Scientific Research
10. National and international news and updates
General Intelligence and Reasoning Ability :
1. Analogies
2. Similarities and Differences
3. Space Virtualization
4. Problem Analysis and Solving
5. Judgment and Decision Making
6. Visual Memory
7. Observation
8. Relationships and Concepts
9. Arithmetical Reasoning
10. Verbal and Figure Classification
11. Arithmetical Number Series
Arithmetical and Numerical Ability :
1. Simplification
2. Decimals and Fractions
3. HCF and LCM
4. Ratio and Proportions
5. Percentage
6. Average
7. Profit and loss
8. Discount, Simple and Compound Interest
9. Time, Work and Distance
10. Tables and Graphs
Hindi Language and Comprehension :
1. Hindi Vocabulary
2. Hindi Grammar and Sentence
3. Synonyms and Antonyms
English Language and Comprehension :
1. English Vocabulary
2. English Grammar and Sentence
3. Synonyms and Antonyms
4. Understanding passage
5. Conclusion Statements
Concerned Subject :
Chemistry :
Chemical periodicity, main group of elements and their compounds, concept of acids and bases, non-aqueous solvents, organometallic compounds, synthesis, bonding and structure, reactivity, characterization of inorganic compounds, Group Theory and its applications, Elementary Analysis, Coordination Compounds, Spot Test of Elements.
Qualitative and Quantitative Analysis, Solvent Extraction, Advantages and Applications of Paper Chromatography, Mass Spectrometry, salt extraction, relation between distribution ratio and distribution coefficient, advantages and applications of solvent extraction, quantitative treatment of neutral chelate in extraction system, single extraction versus multiple extraction, solid-phase extraction, accelerated solvent extraction, ultrasonic extraction, heat reflux extraction.
Spectrophotometry: Basic principles, Beer–Lambert’s Law, principle of applications of UV-Visible Spectrophotometry, atomic absorption spectroscopy, theory and applications of IR, Fourier Transform Infrared Spectroscopy (FTIR), Raman Spectroscopy.
Chromatography: Introduction, principle, procedure and applications of Paper Chromatography, Thin Layer Chromatography (TLC), High Performance Thin Layer Chromatography (HPTLC), Adsorption Chromatography, Column Chromatography, Gas-Liquid Chromatography (GLC), Ion-Exchange Chromatography, Reverse Phase Chromatography, High-Pressure Liquid Chromatography (HPLC), Liquid Chromatography–Mass Spectrometry (LC-MS), Gas Chromatography–Mass Spectrometry (GC-MS).
Introduction and Classification of NDS Drugs, Classification of Drugs, Different methods of extraction of drugs, Mandatory Provisions of NDPS Act, Analysis of opioids, heroin, cocaine, morphine, strychnine, nicotine, atropine, hyoscyamine, cocaine, Datura, Papaver somniferum (opium), atropine, barbiturates, nut, Nux vomica, Oleander, Aconite, Abrus, cannabis, ecstasy, cocaine, amphetamine.
Explosive Chemistry: Introduction, Assessment, Classification and Chemistry of Explosives, Various Types of IEDs, Analysis of low and high explosives by conventional and various instrumental techniques, Analysis of post-blast residues by microscopic, chemical methods and various instrumental techniques.
Petroleum Chemistry: Paraffins, iso-olefins, olefin hydrocarbons, naphthalenes, cycloparaffins, aromatic hydrocarbons, sulphur compounds, nitrogen compounds, oxygen compounds, organo-metallic hydrocarbons, physical properties of petroleum products — density, viscosity, surface tension, fluorescence, cloud point, smoke point, pour point, optical properties, flash point, refractive index and calorific values.
Quantitative and Qualitative Analysis: Analytical techniques, quantitative and qualitative steps in the analysis of petroleum products and residues.
Toxicology
Introduction and scope of forensic toxicology.
Classification of poisons.
Isolation and purification of poisons.
Gaseous and volatile poisons: Analysis of methanol, ethanol, acetone, chloroform, ether, denatured spirit and hooch poisoning; analysis of CO, H₂S, phosphine and other poisonous gases.
Classification and Analysis of Inorganic Poisons: Cations and anions — arsenic, antimony, mercury, bismuth, lead, copper, zinc, thallium, manganese, chromium, aluminium, barium, cadmium, nickel, fluoride, chloride, bromide. Iodate, Nitrate, Nitrite, Sulphate, Sulphide, Dichromate, Phosphate, Azide, Oxychloride, Thiocyanate, Perchlorate.
Classification & Analysis of Neutral poisons (Organic Non Volatile)/Pesticides: Insecticides, Fungicides, Rodenticides, Herbicides and other poisons.
Classification & Analysis of Acidic & Basic Drugs (Organic Non Volatile): Classification, isolation and general properties. Analysis of Barbiturates, Chloral hydrate, tranquilizers. Examination of synthetic and designer drugs of abuse.
Classification & Analysis of Plant poisons.
Sample preparation, dissolution, digestion and fusion, Nature of trace analysis, spot tests and spectroscopic methods. Screening tests commonly engaged in chemical and toxicological analysis of alcohol, drugs, pesticides, poisons and their metabolites from biological samples, blood and urine samples.
Detection of snake venom in crime exhibits.
Instrumental Analysis in Toxicology.
Forensic Science:
Introduction & scope of forensic science.
Basic principles of forensic science.
Collection, Preservation, Packaging of the material at Crime Scene.
Chain of Custody.
Postmortem Changes in case of poisoning.
Bio-Chemistry:
Introduction & scope of biochemistry.
Basic Biochemistry- Amino acids, Lipids, Proteins, Carbohydrates.
Chemistry of natural products – carbohydrates, proteins and peptides, fatty acids, nucleic acids, steroids and alkaloids.
Pathways of drug metabolism, excretion of drugs and poisons.
Chemistry :
Chemical periodicity, main group of elements and their compounds, concept of acids and bases, non-aqueous solvents, organometallic compounds, synthesis, bonding and structure, reactivity, characterization of inorganic compounds, Group Theory and its applications, Elementary Analysis, Coordination Compounds, Spot Test of Elements.
Qualitative and Quantitative Analysis, Solvent Extraction, Advantages and Applications of Paper Chromatography, Mass Spectrometry, salt extraction, relation between distribution ratio and distribution coefficient, advantages and applications of solvent extraction, quantitative treatment of neutral chelate in extraction system, single extraction versus multiple extraction, solid-phase extraction, accelerated solvent extraction, ultrasonic extraction, heat reflux extraction.
Spectrophotometry: Basic principles, Beer–Lambert’s Law, principle of applications of UV-Visible Spectrophotometry, atomic absorption spectroscopy, theory and applications of IR, Fourier Transform Infrared Spectroscopy (FTIR), Raman Spectroscopy.
Chromatography: Introduction, principle, procedure and applications of Paper Chromatography, Thin Layer Chromatography (TLC), High Performance Thin Layer Chromatography (HPTLC), Adsorption Chromatography, Column Chromatography, Gas-Liquid Chromatography (GLC), Ion-Exchange Chromatography, Reverse Phase Chromatography, High-Pressure Liquid Chromatography (HPLC), Liquid Chromatography–Mass Spectrometry (LC-MS), Gas Chromatography–Mass Spectrometry (GC-MS).
Introduction and Classification of NDS Drugs, Classification of Drugs, Different methods of extraction of drugs, Mandatory Provisions of NDPS Act, Analysis of opioids, heroin, cocaine, morphine, strychnine, nicotine, atropine, hyoscyamine, cocaine, Datura, Papaver somniferum (opium), atropine, barbiturates, nut, Nux vomica, Oleander, Aconite, Abrus, cannabis, ecstasy, cocaine, amphetamine.
Explosive Chemistry: Introduction, Assessment, Classification and Chemistry of Explosives, Various Types of IEDs, Analysis of low and high explosives by conventional and various instrumental techniques, Analysis of post-blast residues by microscopic, chemical methods and various instrumental techniques.
Petroleum Chemistry: Paraffins, iso-olefins, olefin hydrocarbons, naphthalenes, cycloparaffins, aromatic hydrocarbons, sulphur compounds, nitrogen compounds, oxygen compounds, organo-metallic hydrocarbons, physical properties of petroleum products — density, viscosity, surface tension, fluorescence, cloud point, smoke point, pour point, optical properties, flash point, refractive index and calorific values.
Quantitative and Qualitative Analysis: Analytical techniques, quantitative and qualitative steps in the analysis of petroleum products and residues.
Toxicology
Introduction and scope of forensic toxicology.
Classification of poisons.
Isolation and purification of poisons.
Gaseous and volatile poisons: Analysis of methanol, ethanol, acetone, chloroform, ether, denatured spirit and hooch poisoning; analysis of CO, H₂S, phosphine and other poisonous gases.
Classification and Analysis of Inorganic Poisons: Cations and anions — arsenic, antimony, mercury, bismuth, lead, copper, zinc, thallium, manganese, chromium, aluminium, barium, cadmium, nickel, fluoride, chloride, bromide. Iodate, Nitrate, Nitrite, Sulphate, Sulphide, Dichromate, Phosphate, Azide, Oxychloride, Thiocyanate, Perchlorate.
Classification & Analysis of Neutral poisons (Organic Non Volatile)/Pesticides: Insecticides, Fungicides, Rodenticides, Herbicides and other poisons.
Classification & Analysis of Acidic & Basic Drugs (Organic Non Volatile): Classification, isolation and general properties. Analysis of Barbiturates, Chloral hydrate, tranquilizers. Examination of synthetic and designer drugs of abuse.
Classification & Analysis of Plant poisons.
Sample preparation, dissolution, digestion and fusion, Nature of trace analysis, spot tests and spectroscopic methods. Screening tests commonly engaged in chemical and toxicological analysis of alcohol, drugs, pesticides, poisons and their metabolites from biological samples, blood and urine samples.
Detection of snake venom in crime exhibits.
Instrumental Analysis in Toxicology.
Forensic Science:
Introduction & scope of forensic science.
Basic principles of forensic science.
Collection, Preservation, Packaging of the material at Crime Scene.
Chain of Custody.
Postmortem Changes in case of poisoning.
Bio-Chemistry:
Introduction & scope of biochemistry.
Basic Biochemistry- Amino acids, Lipids, Proteins, Carbohydrates.
Chemistry of natural products – carbohydrates, proteins and peptides, fatty acids, nucleic acids, steroids and alkaloids.
Pathways of drug metabolism, excretion of drugs and poisons.
DSSSB Junior Scientific Assistant (Chemistry) Exam Pattern 2026
Duration : 120 Minutes
Negative Marking : 0.25
| Section | Subject | No.of Question | Marks |
| Section A | General Awareness | 20 | 20 |
| General Intelligence & Reasoning Ability | 20 | 20 | |
| Arithmetical & Numerical Ability | 20 | 20 | |
| Test of Hindi Language & Comprehension | 20 | 20 | |
| Test of English Language & Comprehension | 20 | 20 | |
| Section B | Concerned Subject | 100 | 100 |
| Total | 200 | 200 |
Exam Date : 13th November 2026 (Expected)
Starting Date of Application Form : 16th June 2026
Last Date of Application Form : 15th July 2026
Total Post : 37
Total Post : 37
FAQs
Dsssb Junior Scientific Assistant (chemistry) 2026 Exam Syllabus Frequently Asked Questions (FAQ's)
Here at Toppersexam.com , you can practice a complete set of Imporatnt Questions (MCQ) along with a Free DSSSB JSA Chemistry MCQ designed by our expert faculty.
In this article Page, we have provided the required syllabus of the DSSSB JSA Chemistry exam.
Being familiar with DSSSB JSA Chemistry Exam Pattern will help you understand the types of questions asked, difficulty level of the exam and important topics that require your keen attention. It will also acquaint you with the marking scheme and time allotted to each Topics.
DSSSB JSA Chemistry syllabus pdf download option is available here which will help you to get the PDF saved in your device that you can access anytime. It consists of a complete syllabus of DSSSB JSA Chemistry which you can refer to while preparing for the exams.
DSSSB JSA Chemistry exam is not tough but it depends on your preparation. The candidates find the Subject not challenging. The dedicated preparation in the right direction will undoubtedly take you towards the goal.
The candidates must be well versed and acquainted with the syllabus and the exam pattern. Select the areas where improvement is required and schedule your preparation accordingly. To ace this exam, the applicants ought to maintain speed with high accuracy. Practicing previous years question papers will help you understand the exam pattern and the level of difficulty of the exam. You need to hone your strengths and improve upon your weaknesses. Toppersexam.com will aid you through the preparation and drive you to success. At Toppersexam.com, you can practice a complete set of test series along with a free DSSSB JSA Chemistry mock test designed by our expert faculty.
The syllabus of DSSSB JSA Chemistry Exam includes all topics that are important for the exam and are necessary for thorough preparation. Toppersexam provides a complete and updated syllabus with a detailed topic-wise breakdown.
You can download the complete DSSSB JSA Chemistry Exam syllabus PDF from toppersexam.com. The PDF is available free and includes a detailed list of topics, section-wise subjects, and weightage for better exam preparation.
Yes, DSSSB JSA Chemistry Exam has a topic-wise syllabus that includes all relevant subtopics. Toppersexam provides the detailed breakdown, helping candidates focus on high-weightage areas and avoid missing important sections.
Toppersexam ensures that the DSSSB JSA Chemistry syllabus is updated for 2026. The latest syllabus reflects current exam trends, question patterns, and updated topics as per official notifications.
The DSSSB JSA Chemistry Exam pattern includes details like the number of sections, total questions, marks distribution, and exam duration. Toppersexam provides a comprehensive guide on exam format, marking scheme, and question types.
Yes, the majority of questions in DSSSB JSA Chemistry Exam are MCQs. Toppersexam provides practice MCQs with answers to help candidates understand the question pattern and improve accuracy.
Yes, questions are divided section-wise. Toppersexam provides a clear guide on how many questions are asked per section and their difficulty level for effective preparation.
Yes, Toppersexam offers online mock tests that strictly follow the DSSSB JSA Chemistry Exam pattern. These mocks help candidates practice time management and get real-exam experience.
Yes, exam patterns can change over time. Toppersexam provides updated information on the latest exam pattern, question types, and section-wise changes.
Understanding the exam pattern is crucial for time management, question prioritization, and strategy planning. Toppersexam guides candidates on how to use the pattern effectively to maximize scores.
Start by dividing the syllabus into sections and prioritizing high-weightage topics. Toppersexam provides a preparation strategy, along with topic-wise tips and sample questions to make syllabus analysis easier.
Yes, focusing on high-weightage topics improves efficiency. Toppersexam highlights important topics, helping candidates prioritize sections for better performance.
Toppersexam provides a free downloadable PDF that includes both the syllabus and detailed exam pattern. This helps candidates study offline and revise efficiently.