National Science Olympiad Forum By SOF Olympiad Trainer

Nandu from The Asian School, Bahrain

Subject :NSO Class : Class 3

Which of the following statements is true ?

(A) The Moon orbits around the Earth's center

(B) The Earth and the Moon each orbit around a common center

(C) The Earth orbits around the Moon's center

(D) Both (A) & (B).

Im sorry for doing it wrong .I did it wrong so Im going to do the tomorrow again. Again really sorry. forgive me please.

Ans 1:

Anushri Bhawan Paunipagar from VIBGYOR HIGH, GOREGAON, MUMBAI, Mumbai

Class : Class 6

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Jiisha Ghosh from DAV PUBLIC SCHOOL , New Delhi

Subject :NSO Class : Class 2

What is it called when the moon covers the sun ?

(A) Comet

(B) Eclipse

(C) Shadow

(D) Asteroid.

Ans 1:

Sanvi Raut from Podar international school, Baramati

Class : Class 2

Eclipse

Ans 2:

Sanvi Raut from Podar international school, Baramati

Class : Class 2

Eclipse

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Aaditya Vichare from St. John's Universal School, Mumbai

Subject :NSO Class : Class 5

Complete the given pattern below

1, 4, 9, 25, _____.

(A) 36

(B) 49

(C) 64

(D) 30

By my views the correct option is B, but it's marked wrong

Ans 1:

naman from PSBBM, Chennai

Class : Class 1

c\

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Aaditya Vichare from St. John's Universal School, Mumbai

Subject :NSO Class : Class 5

How many states have their names starting with the alphabet M ?

(A) 5

(B) 4

(C) 6

(D) 7

Is it 4 or 5 ?

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Nandu from The Asian School, Bahrain

Subject :NSO Class : Class 3

Select the incorrect match from the following.

(A) A muscular bag for food - b-3.eps

(B) A pair of spongy pumps for gases - b-4.eps

(C) A muscular pump - b-5.eps

(D) None of the above.

how is this explain pleasepleeeeeeeasewill you

Ans 1: (Master Answer)

Admin from revisewise, Noida

Class : Class 1

All the options are correct explanations of the respective images. Hence, the correct answer is D.

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Aaditya Vichare from St. John's Universal School, Mumbai

Subject :NSO Class : Class 5

Ans 1:

Tanya A Mandali from Sri Kumaran Public School , Bangalore

Class : Class 6

Ans 2:

Aaditya Vichare from St. John's Universal School, Mumbai

Class : Class 10

Correct answer is given as 168 but according to my calculations it was 156

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Apoorv Raut from Podar International School Jalna, Jalna

Subject :NSO Class : Class 5

Some students were studying properties of water. One student placed a cup containing 80 mL of water in a freezer. Another student placed an identical cup containing 40 mL of water in a different freezer. Which of the following will be same for both cups of water?

(A) The temperature at which the water freezes

(B) The mass of the frozen water

(C) The time it takes the water to freeze

(D) The volume of the frozen water.

a

Ans 1:

Saswatayu Sengupta from Don Bosco Park Circus , Kolkata

Class : Class 7

C

Ans 2:

Ashher Pervez from DPS Bhilai, Bhilai

Class : Class 10

correct answer is A

Ans 3:

Aditya kumar from Sapphire International School, Noida

Class : Class 8

ans is A because mass , volume , time cannot be same.

Ans 4:

Aaditya Vichare from St. John's Universal School, Mumbai

Class : Class 10

A is the correct option

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Mithran L from The Shishukunj International School, Indore

Subject :NSO Class : Class 4

Find out the correct statement from the following.

(A) Heating and cooling bring changes in matters

(B) Physical change is always a permanent change

(C) Gases cannot be dissolved in liquid

(D) All liquids get mixed with each other.

Ans 1:

tanmay chaudhry from BAL BHAVAN PUBLIC SCHOOL, New Delhi

Class : Class 4

A

Ans 2:

Nikhil B. S. from Podar International School, Hassan

Class : Class 4

A and C

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Kaushik Thatikonda from DPS Dubai, Dubai

Subject :NSO Class : Class 4

★ Study the given word grid carefully. What is the number of natural fibres and synthetic fibres, hidden in the grid?

Natural fibres------Synthetic fibres

A4--------2
B2--------1
C1--------3
D4--------3

View All Answers (3)

Ans 1:

Nikhil B. S. from Podar International School, Hassan

Class : Class 4

A

Ans 2:

tanmay chaudhry from BAL BHAVAN PUBLIC SCHOOL, New Delhi

Class : Class 4

NATURAL FIBRES- WOOL, SILK, COTTON AND FLAX SYNTHETIC FIBRES- POLYESTER AND NYLON ANSWER- A

Ans 3:

Sohana Roy Barman from Delhi Public School, Durgapur

Class : Class 6

flax is new to me

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Madhu from st. xaviers high school panchkula, Panchkula

Subject :NSO Class : Class 9

Read the passage carefully and answer Q.

A train starts from rest and accelerates uniformly at 100 min^_2 for 10 min. It then maintains a constant velocity for 20 minutes. The brakes are then applied and the train is uniformly retarded. It comes to rest in 5 minutes.

The maximum velocity retarded is

(A) 1000 m min^-1

(B) 2000 m min^-1

(C) 3000 m min^-1

(D) 500 m min^-1.

View All Answers (1)

Ans 1:

Garima shokeen from N K Bagrodia Public School, New Delhi

Class : Class 9

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