SOF ISO (NSO) for Class 2

ISO Class 2 at a glance

Conducted by

Science Olympiad Foundation

Questions for Class 2

35

Duration

60 min

Total marks

40

Fee

₹150-200

Exam window

Oct-Dec (L1); Feb (L2)

Levels

2 (Level 2 for Class 3-12)

Classes eligible

1-12

Level 1 is held in Oct-Dec and Level 2 in Feb. Each school picks its exam day inside the window; the date for your child comes from the school. Confirm on sofworld.org.

Exam pattern for Class 2

35 questions for 40 marks, 60 minutes, all multiple choice. No negative marking.

Ties are broken by section, in this order: Achievers > Science > Reasoning (M3,M2,M1).

Try 8 real Class 2 questions

Straight from the PrepMojo question bank, written to the pattern of the SOF papers. Have a go, then open the answer.

1. Question 1 · Science

   Strike out every alternate letter starting from the first one in each option. Which option gives the organ where food is churned after we swallow it?

   1. A.WLQUBNNGTS
   2. B.LBWRXAXITN
   3. C.DHDEHAGRRT
   4. D.XSZTWOLMFAMCSH
   Show answer

   Answer: D. XSZTWOLMFAMCSH

   Striking out the first, third, fifth ... letters of XSZTWOLMFAMCSH leaves STOMACH, the organ where food is churned after we swallow it.

2. Question 2 · Science

   Select the option that correctly completes the word in the given statement. The bones in our body form a strong S_E_E_O_, which gives our body its shape.

   1. A.IAIS
   2. B.TNKL
   3. C.KLTN
   4. D.LTNK
   Show answer

   Answer: C. KLTN

   The word is SKELETON. Putting KLTN back into S_E_E_O_ spells it.

3. Question 3 · Science

   Riya kept a potted plant inside a dark cupboard for many days and watered it every day. Its leaves turned pale and it began to droop. Why?

   1. A.No wind blew in the cupboard, and a plant needs wind to hold its leaves up
   2. B.A plant needs sunlight to make its food, and it got none in the cupboard
   3. C.The cupboard was too cold, and plants can grow only in hot air
   4. D.Plants fall asleep in the dark, and a sleeping plant lets its leaves hang down
   Show answer

   Answer: B. A plant needs sunlight to make its food, and it got none in the cupboard

   Green leaves make the plant's food, and they need sunlight to do it. Shut away in the dark, the plant could make no food, so it grew weak and pale.

4. Question 4 · Science

   Which of these does NOT make its own light?

   1. A.Sun
   2. B.Moon
   3. C.Bulb
   4. D.Firefly
   Show answer

   Answer: B. Moon

   The Moon has no light of its own and only throws back the Sun's light. It is easy to miss, because the Moon looks bright all night long. All three of the others make their own light.

5. Question 5 · Science

   Which of these is a good way to save water?

   1. A.Leaving the tap running while brushing your teeth
   2. B.Telling an adult about a leaking tap so it gets mended
   3. C.Washing a car with a running pipe
   4. D.Switching off the fan when you leave the room
   Show answer

   Answer: B. Telling an adult about a leaking tap so it gets mended

   Ask of each action: does water run or get thrown away for nothing? The right action wastes none: once the leak is mended, no more water drips away.

6. Question 6 · Science

   Unscramble the letters TABO to find a vehicle. Where does it travel?

   1. A.In the air
   2. B.On roads
   3. C.On water
   4. D.On rails
   Show answer

   Answer: C. On water

   The letters TABO spell BOAT. A boat floats and moves about on water.

7. Question 7 · Logical Reasoning

   Aisha has ₹300 and a friend has ₹118. Together they buy a pencil box for ₹38. How much money is left with them?

   1. A.₹456
   2. B.₹144
   3. C.₹380
   4. D.₹262
   Show answer

   Answer: C. ₹380

   First put the two amounts together: 300 + 118 = 418. Then take away 38: 418 − 38 = 380.

8. Question 8 · Logical Reasoning

   Anika has ₹150 to spend on 5 similar story books, with no money left over. What does one story book cost?

   1. A.₹37
   2. B.₹21
   3. C.₹30
   4. D.₹25
   Show answer

   Answer: C. ₹30

   Share the ₹150 equally between the 5 story books: taking ₹30 away 5 times empties the purse exactly, so one story book costs ₹30.

SOF ISO (NSO) Class 2 syllabus

As published by SOF for Class 2: 3 sections, 21 topics. Reproduced as printed, so what you read here is what the paper is set from.

Compiled from sofolympiadtrainer.com. Always confirm against the official site before an exam.

Questions parents ask about ISO Class 2

What is the SOF ISO (NSO) syllabus for Class 2?

The Class 2 paper has 3 sections: Logical Reasoning, Science, Achievers. Topics include Patterns, Odd One Out, Measuring Units, Geometrical Shapes, Analogy, Ranking Test, Grouping of Figures, Embedded Figures, Coding-Decoding, Plants. The full list of 21 topics, as SOF publishes it, is on this page.

How many questions are in the Class 2 ISO paper?

35 questions for 40 marks, in 60 minutes. Logical Reasoning: 5 questions of 1 mark each; Science: 25 questions of 1 mark each; Achievers Section: 5 questions of 2 marks each. There is no negative marking.

When is the SOF ISO (NSO) exam for Class 2 in 2026-27?

Level 1 is held in Oct-Dec and Level 2 in Feb. Each school picks its own exam day inside that window and tells its students, so the date for your child comes from the school. Confirm it on the official SOF site before the exam.

Where can a Class 2 child practise ISO questions for free?

On PrepMojo. Every child gets 10 practice questions a day free, forever, with no card needed, and every answer comes with an explanation. It works in the app on iPhone and Android and in any web browser. Till 30 Nov 2026, every child has PrepMojo Plus at no cost as part of our Navratri and Diwali Offer.