SCL Assistant Syllabus, Exam Pattern, Eligibility

One OMR-based written exam decides everything. There's no interview, skill test or typing test.

• 120 minutes, or 160 for scribe-eligible candidates (20 minutes per hour, with or without a scribe).
• +1 for a correct answer, −0.25 for a wrong one.
• English and Hindi, except English Comprehension, which is English only.
• Normalised if held in several shifts, with marks worked to five decimal places.

You must clear 40 per cent in each part and 50 per cent overall (details under cut-offs). Ties go first to Part A marks, then graduation marks, then the older candidate, then alphabetical order.

SCL prints an indicative syllabus in the Advertisement No. SCL: 02/2025.

Quantitative Aptitude (20)

"The ability of appropriate use of numbers and number sense": whole numbers, decimals, fractions and relationships between numbers; percentage, ratio and proportion, square roots, averages, interest, profit and loss, discount, partnership, mixture and alligation; time and distance, time and work; basic algebraic identities, elementary surds, graphs of linear equations; triangles and their centres, congruence and similarity; circles, chords, tangents and subtended angles, common tangents; quadrilaterals, regular polygons, prism, cone, cylinder, sphere, hemispheres, rectangular parallelepiped, regular right pyramid; trigonometric ratios, degree and radian measures, standard identities, complementary angles, heights and distances; histogram, frequency polygon, bar diagram and pie chart.

Basic Knowledge of Computer (20)

Basics of computers; network and internet; Word, Excel and spreadsheets, PowerPoint.

General Intelligence and Reasoning Ability (20)

Verbal and non-verbal: analogies, similarities and differences, space visualisation and orientation, problem solving, analysis, judgement, decision making, visual memory, discrimination, observation, relationship concepts, arithmetical reasoning, figural classification, number and non-verbal series, coding and decoding, statement conclusion, syllogistic reasoning; semantic, symbolic, number and figural analogy, classification and series; word building; numerical and symbolic operations; trends; Venn diagrams; drawing inferences; punched hole and pattern folding and unfolding; figural pattern completion; indexing; address, date and city matching; classification of centre codes and roll numbers; letter and number coding; embedded figures; critical thinking; emotional and social intelligence.

English Comprehension (20)

Understanding correct English, basic comprehension and writing ability.

General Knowledge and Current Affairs (20)

The environment and its application to society; current events; everyday science as expected of an educated person; India and its neighbours, especially history, culture, geography, economy, general policy and scientific research.

Computer proficiency means a certificate of at least 120 hours or three months from an ISO 9001 certified institute, uploaded with the form. A computer degree such as BCA, B.Sc. (IT) or B.Tech. (Computer Science) can be used instead. The certificate must exist by the closing date, so get it before an advertisement appears. Results must be declared by then too; "mere processing" by the university doesn't count.

Age

Up to 25 years on the closing date for online applications. That date stays fixed even if the window is extended, as it was twice in 2025 before the portal reopened.

Date of birth comes from your matriculation certificate. Ex-Servicemen already in a regular Group C or D civil post through ESM reservation lose that reservation and the fee concession, unless the DoPT memorandum of 14 August 2014 applies.

Distance degrees

An open or distance degree from a central or state university, deemed university or institution of national importance counts if the UGC's Distance Education Bureau approved it for the years you studied; bring that approval to verification. Engineering, medicine, dental, nursing, pharmacy, architecture and physiotherapy can't be done by distance, except IGNOU B.Tech. or engineering diplomas for students enrolled up to 2009-10, which the Supreme Court upheld in 2019.

Reservation and other conditions

Reserved candidates selected on general standards aren't counted against reserved posts; those who use a relaxed standard are. Deducting military service from age, and the ten-year PwBD age relaxation, aren't treated as relaxed standards. The usual central bar on bigamy applies, and passing the exam gives no right to appointment until SCL is satisfied you're suitable.

1. Written exam (OMR, 100 questions, two hours) at New Delhi or Chandigarh, Mohali or Panchkula.
2. Answer key within three working days, a five-day paid objection window, then a revised final key on which results are based.
3. Common merit list, document verification in person at S.A.S. Nagar, and offers in merit order.

Selection rests on eligibility and the written test alone. SCL doesn't check eligibility before the exam, so candidature stays provisional: any unmet condition found later, before or after the paper, cancels it.

At verification bring originals and copies, two recent colour passport photos and one original photo ID, plus your matriculation certificate, graduation and other certificates, the computer certificate or degree, category documents, any equivalence certificate, and the Distance Education Bureau approval if relevant.

Malpractice at any stage means cancellation, a bar from SCL exams, and possibly a police report and forensic examination. Disputes go to courts with jurisdiction over S.A.S. Nagar (Mohali) and Chandigarh, and SCL's decisions on eligibility and selection are final.

Plus Dearness Allowance, Transport Allowance and House Rent Allowance if you don't take SCL housing. You also get medical cover for yourself and dependants, a subsidised canteen, LTC and a house building advance. Pension is under the National Pension System.

You'd be posted at SCL, S.A.S. Nagar, Punjab 160071, but can be sent anywhere in India. The other office is at Scope Minar, 2nd floor, Core 4, near Nirman Vihar metro, Laxmi Nagar, New Delhi 110092. The advertisement mentions no bond or probation period. The cadre is governed by the Recruitment Rules for non-scientific and technical posts.

Apply online only through the portal linked from scl.gov.in/career.html.

The refund was added by the corrigendum of 7 May 2025 and covered those who'd already paid. Pay early and don't press refresh or back during payment; SCL isn't responsible for failed transactions. Payment problems go to recruitment@scl.gov.in.

• Upload your graduation and computer certificates with the form, not later.
• A blurred photo or signature, or one in the wrong format, gets the form rejected.
• Preview before submitting: no changes are allowed after, including address.
• If you submit more than once, only the last complete, paid application counts.
• Print the form with its application number and download the registration confirmation.
• Any letter to SCL must quote registration number, roll number, email, mobile, name, date of birth and exam name.

SCL recruits directly; no commission is involved. Recruitment is handled by its P&GA (Personnel and General Administration) section, contact recruitment@scl.gov.in.

Everything for a recruitment stays on scl.gov.in/career.html after it closes. The Assistant row still carries the advertisement, two addenda, the corrigendum, PwBD information, the exam date notice, the admit card link, answer key notices and the result. The same page holds Recruitment Rules for Assistant, Technician B, Technical Assistant and Controller. As of 12 September 2026 it also showed an advertisement for Director General of SCL (11 July 2026). Direct recruitment to the Assistant post is infrequent.

Only two venues: New Delhi, and Chandigarh, Mohali or Panchkula. You travel at your own cost, and SCL can move candidates between centres depending on numbers.

PwBD candidates using a scribe must send the scribe's details (Annexure II) by registered post to S.A.S. Nagar at least 7 days before the exam, and the scribe's declaration (Annexure III) to S.A.S. Nagar 7 days before or to the New Delhi office at least 3 days before. Bring the medical certificate, undertaking and a copy of the scribe's photo ID.

There's no annual calendar; the 2025 cycle is the recent one.

The front end is slow (about five and a half months to the exam) and the back end fast: key within 5 days, objections closed 5 days later, final key 3 weeks on, result about 8 weeks after that, and verification 1 week after the result. Have your documents ready before the result.

Nothing is posted. The admit card appears on scl.gov.in/career.html 7 days before the exam with the city, and the full centre address 2 days before.

Bring a printout, two recent colour passport photos, and an original photo ID showing the date of birth on your admit card (Aadhaar, voter ID, driving licence, PAN, passport, employer ID, ESM discharge book or other government ID). If your ID has no date of birth, also bring your matriculation certificate, a board mark sheet, a birth certificate or a category certificate. If the dates don't match, you won't be allowed in.

Results, keys and verification schedules are posted on scl.gov.in/career.html. The 2025 provisional result (9 October 2025) listed 25 candidates for 25 posts by application number, roll number and name, with verification slots on 16 and 17 October. The schedule was also sent by email and speed post to each candidate's correspondence address.

Selection stays provisional until verification. There's no re-evaluation or re-checking.

SCL doesn't publish closing cut-offs or candidate marks. It publishes only the qualifying standard, and you must clear both columns:

For UR that's 16 of 40 in Part A, 24 of 60 in Part B and 50 of 100 overall. With 25 posts, the actual merit line will sit well above that. The revised final answer key of 13 August 2025 is the closest published record of the last paper.

Check age and the computer certificate first

The limit is 25 on the original closing date. A 120-hour computer course can't be squeezed into a one-month application window, so get it done in advance.

Don't skip the computer section

It's half of Part A. Without it you'd need 16 of 20 on quantitative aptitude alone to clear the Part A bar, and Part A also breaks ties. Its syllabus is small: basics, networks and internet, Word, Excel, PowerPoint. Bank clerical computer awareness material or a class 9 or 10 computer applications textbook covers it.

Use SSC material for the rest

SCL's quantitative and reasoning lists are close to the Staff Selection Commission's, so SSC CGL and CHSL papers are the nearest practice. But SSC papers are computer based, 60 minutes with 0.50 off per wrong answer; SCL is OMR, 120 minutes and 0.25. Take the content from SSC and the rules from SCL. A little reading on what SCL and MeitY do helps the general knowledge section.

Practise on OMR

At 72 seconds a question there's time, so favour accuracy. Four wrong answers cancel a right one; answer what you can narrow to two.

After the paper

Check the key the moment it's out. The objection window is five days at ₹100 a question, and nothing can be challenged after. And keep watching the careers page: in 2025 the window reopened weeks after it had closed.

No previous year papers or sample papers are available for this exam. SCL doesn't release them.

What it does release is the answer key: the tentative key within three working days of the exam (viewed by logging in), then a public revised final key, as on 13 August 2025. Notices go up on scl.gov.in/career.html.

• Semi-Conductor Laboratory and scl.gov.in/career.html
• Advertisement No. SCL: 02/2025 (35 pages): vacancies, eligibility, fee, exam scheme, syllabus
• Corrigendum of 7 May 2025: portal reopened, fee refund
• Answer key and objection notice, 18 July 2025
• Revised final answer key, 13 August 2025
• Provisional result, 9 October 2025
• Recruitment Rules, non-scientific and technical posts; Recruitment Rules, Technician B and Technical Assistant
• Ministry of Electronics and Information Technology

Who conducts it?

SCL itself. No commission is involved.

How many posts were advertised?

25 in 2025: 11 UR, 6 OBC, 6 SC/ST, 2 EWS, with one PwBD and one ESM post horizontally.

How do I prove computer proficiency?

A certificate of at least 120 hours or three months from an ISO 9001 institute, or a computer degree.

Does the age cut-off move if the deadline is extended?

No. It stays at the original closing date.

Is the test computer based?

No, it's OMR based.

Is there an interview or typing test?

No. Selection is on the written test alone.

Is the fee refundable?

Only for women, SC, ST, Ex-Servicemen and PwBD candidates who sit the exam.

Does SCL publish cut-off marks?

No, only the qualifying percentages.