SOF ISO (formerly NSO) Class 9 — Syllabus & Sample Questions
Preparing for the SOF ISO (formerly NSO) in Class 9? This guide covers the Class 9 syllabus scope and two illustrative sample questions with worked explanations, written by Tutors Parliament to help you get started — not official SOF material.
Class 9 ISO Syllabus
Broadly aligned with CBSE, ICSE/ISC and major state board syllabi for Class 9, plus ISO's logical-reasoning and application-based questions.
- Matter in Our Surroundings, Atoms & Molecules
- Cell Structure & Tissues
- Motion, Force & Laws of Motion
- Gravitation, Work & Energy
- Sound
- Natural Resources
Sample Questions
Two illustrative practice questions written by Tutors Parliament for Class 9 ISO — not official SOF questions. Tap a question to reveal the answer and explanation.
Question 1
Which of the following is the smallest structural and functional unit of life?
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Question 1
Which of the following is the smallest structural and functional unit of life?
- A. Tissue
- B. Organ
- C. Cell ✓
- D. Organism
Question 2
According to Newton's First Law, an object at rest remains at rest unless acted upon by:
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Question 2
According to Newton's First Law, an object at rest remains at rest unless acted upon by:
- A. Gravity only
- B. An unbalanced force ✓
- C. Friction only
- D. Time
Preparation Strategy for Class 9
- Revise Physics, Chemistry and Biology chapters evenly rather than favouring one strand
- Practice numerical problems in Physics and Chemistry under time pressure
- Connect Biology topics to diagrams and functional relationships, not just definitions
- Revisit the previous class's topics for revision, since Olympiad papers often draw on cumulative knowledge
Frequently Asked Questions
What topics are covered in ISO for Class 9?
Class 9 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 9 ISO, not official SOF material. Refer to SOF's own sample papers for official practice content.
How can Tutors Parliament help with Class 9 ISO preparation?
A tutor can identify which topics from the Class 9 syllabus need the most attention and build focused practice around them, rather than generic revision.
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