Olympiad practice for Class 1

Try 10 real Class 1 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 · Maths

   Read all four statements. Which one is NOT correct?

   1. A.A triangle has three corners.
   2. B.A rectangle has three sides.
   3. C.A triangle has three sides.
   4. D.A rectangle has four corners.
   Show answer

   Answer: B. A rectangle has three sides.

   Take the statements one at a time and check each against the shape it names. A rectangle is closed by four straight sides. Three straight sides make a triangle.

2. Question 2 · Maths

   Boxes hold 7, 11, 15, ?, 23, 27 squares. How many squares are hidden?

   1. A.16 squares
   2. B.19 squares
   3. C.18 squares
   4. D.8 squares
   Show answer

   Answer: B. 19 squares

   Work out the jump first: 7 to 11 to 15 goes up by 4 each time. So add 4 to 15 to fill the empty box, and check it by taking 4 away from 23 - both give the same number.

3. Question 3 · Maths

   Vihaan has 14 marbles. Each bag holds 5 marbles. How many more marbles are needed to fill one more bag?

   1. A.5
   2. B.4
   3. C.2
   4. D.1
   Show answer

   Answer: D. 1

   Taking away 5 marbles at a time fills 2 bags and leaves 4 over. A full bag needs 5, so 5 − 4 = 1 more would fill one.

4. Question 4 · Science

   In each group the odd one is put in brackets. Which group has the wrong word in brackets?

   1. A.River, Pond, Lake, [Road]
   2. B.Eye, Ear, Nose, [Shoe]
   3. C.Shirt, Cap, Socks, [Spoon]
   4. D.Tree, Boy, Chair, [Cat]
   Show answer

   Answer: D. Tree, Boy, Chair, [Cat]

   Cat, Tree and Boy are living things that grow and need food, but a chair does not grow, feed or breathe. So Chair is the odd one in that group, and Cat should not have been put in brackets.

5. Question 5 · Science

   Which of these is NOT made by people?

   1. A.Bus
   2. B.River
   3. C.Paper
   4. D.Pencil
   Show answer

   Answer: B. River

   A river flows in nature and nobody built it. All three of the others are made by people.

6. Question 6 · English

   Yesterday, Ravi ___ to the park.

   1. A.Walks
   2. B.Walking
   3. C.Walked
   4. D.Walk
   Show answer

   Answer: C. Walked

   We say: Yesterday, Ravi walked to the park. 'Yesterday' tells us it already happened, so walk becomes walked.

7. Question 7 · English

   Read the sentence: The big dog barks loudly. Which word tells how the action is done?

   1. A.Big
   2. B.Dog
   3. C.Barks
   4. D.Loudly
   Show answer

   Answer: D. Loudly

   'Loudly' tells how the action is done. 'Barks' is often picked, but 'barks' is the action itself, not how it is done.

8. Question 8 · Logical Reasoning

   Which one is the odd one out?

   1. A.Pilot
   2. B.Ferry
   3. C.Helicopter
   4. D.Bicycle
   Show answer

   Answer: A. Pilot

   Pilot belongs with people who do jobs; all the other words are ways to travel.

9. Question 9 · Logical Reasoning

   The letters of RAINBOW stand in a line. What place is O from the right?

   1. A.7
   2. B.1
   3. C.6
   4. D.2
   Show answer

   Answer: D. 2

   Count the letters first: RAINBOW has 7 of them, and O is letter 6 counting from the left. Place from the right = 7 − 6 + 1 = 2. The +1 is because the letter itself is counted too.

10. Question 10 · Computers

    Ravi typed SPEAKWER. The cursor is at the start. Which key, pressed how many times, puts it just before the extra letter?

    1. A.Right arrow key, 2 times
    2. B.Right arrow key, 5 times
    3. C.Left arrow key, 3 times
    4. D.Right arrow key, once
    Show answer

    Answer: B. Right arrow key, 5 times

    The extra letter is the W, and there are 5 letters before the W. Each press of the arrow moves the cursor one letter to the right.

What the Class 1 SOF papers cover

As published by the Science Olympiad Foundation for Class 1.

All 55 olympiads open to Class 1

Grouped by the body that runs them. Each links to its exam pattern, fee and full syllabus.

Questions parents ask about Class 1

Which olympiads can a Class 1 student take?

55 olympiads from 12 organising bodies admit Class 1, including the SOF International Mathematics Olympiad (IMO), the SOF International Science Olympiad (NSO, now ISO) and the SOF International English Olympiad (IEO). The full list, with exam windows, is on this page.

Is PrepMojo free for Class 1?

Yes. Every child gets 10 practice questions a day free, forever, with no card needed, plus one free mock paper every 60 days. PrepMojo Plus adds unlimited daily practice, unlimited SOF-pattern mock papers and 100 Mojo AI tutor doubts a month, from ₹299. Till 30 Nov 2026, every child has Plus at no cost as part of our Navratri and Diwali Offer.

How long is the Class 1 IMO paper?

The SOF IMO paper for Class 1 has 35 questions and runs for 60 minutes. Level 1 is held Oct-Dec.

Which subjects does PrepMojo cover for Class 1?

Maths, Science, English, Logical Reasoning and Computers, following the syllabus each olympiad's organising body publishes. Practice works in the app on iPhone and Android and in any web browser.