National Science Olympiad Forum By SOF Olympiad Trainer

Durva Shah from SSRVM, Ahmedabad

Subject :NSO Class : Class 5

Which of the following statements best describes the motion of Earth?

AIt spins as it orbits the stars.
BIt spins as it orbits the Moon.
CIt makes one complete turn as it orbits the Sun.
DIt makes one complete turn as it orbits the Moon.

A is the correct answer. C cannot be an answer because any planetary motion is circular or elliptical. So it will anyway make one or more complete turn over a period on time.

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Ans 1:

Adway Bachchan from Indian School Sohar, Sohar

Class : Class 8

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Saani from Cambridge School, Mangalore

Subject :NSO Class : Class 5

Refer to the given word grid and answer the following questions.

The term used for __________ can be found in the given word grid.

A The process of clearing forests
B Rain which is acidic in nature
C The process of re-establishing a cleared forest
D Materials that get decomposed when thrown

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Ans 1:

Aarna Agarwal from Manav Rachna International School, Gurgaon

Class : Class 5

Ans 2:

Yashika Srivastava from Campus School IIT Kanpur, Kanpur

Class : Class 5

how many children are participating in olympiad of class 5

Ans 3:

Aarna Agarwal from Manav Rachna International School, Gurgaon

Class : Class 5

Ans 4:

Saanjh Puthran from Dr. Pillai Global Academy, Mumbai

Class : Class 5

B) Rain which is acidic in nature (Acid Rain).

Ans 5:

Aarna Agarwal from Manav Rachna International School, Gurgaon

Class : Class 5

The answer is B ( acidic rain ).

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harshit wahi from DPS, hyderabad

Subject :NSO Class : Class 8

Colours of flame produced by kerosene lamp, candle and Bunsen burner are respectively

A Blue, yellow and yellow
B Yellow, yellow and blue
C Orange, blue and yellow
D Yellow, orange and yellow.

b is the answer

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Ans 1:

PARTH JAIN from DPS INDIRAPURAM, GHAZIABAD

Class : Class 8

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Lalit Srikar Peesapati from Global Indian International School, Singapore

Subject :NSO Class : Class 10

Which of the following statements are correct regarding the given figure?
(i) The parts labelled as Q and R carry blood having low oxygen concentration.
(ii) The parts labelled as P, Q and R carry blood having low oxygen concentration.
(iii) The blood flows out of the heart through blood vessel Q when ventricle contracts.
(iv) The blood is flowing out of the heart through blood vessel Q when atria contract.

A (ii) and (iv) only
B (ii), (iii) and (iv) only
C (i), (ii) and (iii) only
D (i) and (iii) only

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Ans 1:

Satvik B from BVM Global, Chennai

Class : Class 10

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R SAI HARSHIL from HILLSIDE SCHOOL, Hyderabad

Subject :NSO Class : Class 4

The given figure shows human digestive system with parts labelled as d, e, f, g and h. In which labelled parts the following occur?
(1) Acid and enzymes break the food.
(2) Absorption of most water from the food takes place.

	(1)	(2)
A	e	d
B	e	g
C	e	f
D	f	g

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Ans 1:

Ashwak from Cambridge, Jalandhar

Class : Class 9

***** All the answers are same in NSO olympiad book *****

Ans 2:

Sai Aditya Samal from DPS SECTOR 45, Gurgaon

Class : Class 5

Ans 3:

Rupsa Bhattacharjee from South City International School, Kolkata

Class : Class 5

this is wrong. If you have the science NSO olympiad book for level 1 go to that same chapter and see all the same questions are there but different answer.

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Prasun Das from Abu Dhabi Indian School, Abu Dhabi

Subject :NSO Class : Class 3

Which of the following solid objects is used to draw the Shape (X)?

A
B
C
D

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Ans 1:

Aditri Dixit from TCIS, Bangalore

Class : Class 3

Ans 2:

Aditri Dixit from TCIS, Bangalore

Class : Class 3

C is the answer

Ans 3:

Bhavika Pawar from D A V Public school, Thane West, Thane West

Class : Class 3

Ans 4:

Hamsini from yagappa international school, Thanjavur

Class : Class 5

c

Ans 5:

ALICE from Delhi Public School, UDAIPUR

Class : Class 9

Ans 6:

Aarna Agarwal from Manav Rachna International School, Gurgaon

Class : Class 5

Ans 7:

Bhavika Pawar from D A V Public school, Thane West, Thane West

Class : Class 3

Ans 8:

maanya from springdales, delhi

Class : Class 3

Correct answer is C

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ARYAN PRASAD from Podar Internation School, Vadodara

Subject :NSO Class : Class 9

Complete the given statements by selecting the correct words from the options given below.
(A) ___(i)___ is a kind of manure which is prepared in the field itself to enrich soil with nitrogen and phosphorus.
(B) ____(ii)____ is a draught breed of cattle.
(C) In ___(iii)____ water escapes from revolving nozzle and falls like rain on the crops.
(D) ____(iv)____ is the process of crossing individuals of two different species to produce hybrid.

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SpaceXX from indian school sohar, Muscat

Subject :NSO Class : Class 6

The above rhyme refers to ____.

ACotton flower
BJute flower
CMarigold
DRauwolfia

Answer is rauwolfia saw on google cotton is pierced white it is dyed that is why it is sold in market in different colours

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Ans 1:

Nived from GEMS New Millennium School, Dubai

Class : Class 9

Please check

Ans 2:

ABHIROOP SAHU from BHAVANS GANGABOUX KONORIA VIDYAMANDIR, KOLKATA

Class : Class 4

Ans a

Ans 3:

Dushyant Singh from Shree Ram Centenial School, Indore

Class : Class 9

Ans 4:

NEHA JOON from dps rohini , New delhi

Class : Class 8

Ans 5:

Ryan Geo from Birla Public School, DOHA

Class : Class 7

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Niteen Jit Sahu from Diya Academy of Learning, Bengaluru

Subject :NSO Class : Class 4

Select the correct statement about the given figure.

AIt helps in reducing soil erosion by using non-arable land.
BIt helps in reducing soil erosion by water.
CIt helps in reducing soil erosion by overgrazing.
DIt helps in reducing soil erosion by deforestation.

Who will answer this question, I will give them 100000000 dollars. Who invented scuba suit ? Don't search in google !

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Ans 1:

Niteen Jit Sahu from Diya Academy of Learning, Bengaluru

Class : Class 7

The clue for the first answer is :his name starts from L and ends with I.One more question,who invented the metal detector ? The clue for this is:his name strts from A and ends with L. No searcing google.For this you will get $10,00,00,000.

Ans 2:

Akshat Pathak from DPS, Noida

Class : Class 4

alexander graham bell but i searched google

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Saatviki from Ryan International School, PUNE

Subject :NSO Class : Class 2

Select the option that will complete the word in the given statement. Our body has a framework of bones called S____E____E____O____ for support.

A W, D, N, L
B O, P, L, M
C K, L, T, N
D K, L, E, N

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Ans 1:

Gaurika Bhasin from Genesis global school, Noida

Class : Class 2

The correct answer is KLTN

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