Science · Class 12

SOF ISO (formerly NSO) Class 12 — Syllabus & Sample Questions

Preparing for the SOF ISO (formerly NSO) in Class 12? This guide covers the Class 12 syllabus scope and two illustrative sample questions with worked explanations, written by Tutors Parliament to help you get started — not official SOF material.

Class 12 ISO Syllabus

Broadly aligned with CBSE, ICSE/ISC and major state board syllabi for Class 12, plus ISO's logical-reasoning and application-based questions.

Electrostatics & Current Electricity
Magnetism & Electromagnetic Induction
Optics
Solid State & Electrochemistry
Chemical Kinetics
Reproduction, Genetics & Evolution

Sample Questions

Two illustrative practice questions written by Tutors Parliament for Class 12 ISO — not official SOF questions. Tap a question to reveal the answer and explanation.

Question 1

What is the SI unit of electrical resistance?

Show Answer▾

A. Ampere
B. Volt
C. Ohm ✓
D. Watt

Explanation: Electrical resistance is measured in ohms (Ω), as defined by Ohm's Law: R = V/I.

Question 2

Which type of lens is used in a simple magnifying glass?

Show Answer▾

A. Concave lens
B. Convex lens ✓
C. Plano lens
D. Cylindrical lens

Explanation: A convex (converging) lens forms an enlarged, upright virtual image when an object is placed within its focal length, making it suitable as a magnifying glass.

Preparation Strategy for Class 12

Focus on core Physics, Chemistry and Biology concepts relevant to your stream, applied to reasoning-based questions
Practice numerical problems regularly, especially in Physics and Chemistry
Revise diagrams and biological processes for quick recall rather than rote definitions
Attempt timed objective-type sets to build exam-day pacing across all sections

Frequently Asked Questions

What topics are covered in ISO for Class 12?

Class 12 ISO broadly follows that class's school syllabus for the subject, with added logical-reasoning and application-based questions. See the syllabus list on this page for the specific topics it covers.

Are the sample questions on this page official SOF questions?

No. These are original practice questions written by Tutors Parliament to illustrate the style and difficulty level of Class 12 ISO, not official SOF material. Refer to SOF's own sample papers for official practice content.

How can Tutors Parliament help with Class 12 ISO preparation?

A tutor can identify which topics from the Class 12 syllabus need the most attention and build focused practice around them, rather than generic revision.

More for ISO

ISO Overview & Exam Dates All Class 12 Olympiads

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