National Science Olympiad Forum By SOF Olympiad Trainer

Naitik from Delhi Public School Noida, Noida

Subject :NSO Class : Class 4

Which of the following parts of digestive system is the longest?

ALarge intestine
BSmall intestine
CStomach
DOesophagus

not option B .

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Prasun Das from Abu Dhabi Indian School, Abu Dhabi

Subject :NSO Class : Class 3

Study the given arrangement.

Box _______ is third to the right of box S.

AV
BP
CW
DU

Ans 1:

AARNA GARG from bethany high school, Bangalore

Class : Class 4

mine was almost correct

Ans 2:

AKSHAJ SRIVASTAVA from MOUNT LITERA ZEE SCHOOL, Kanpur

Class : Class 9

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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

The answer is B ( acidic rain ).

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

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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:

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.

Ans 2:

Sai Aditya Samal from DPS SECTOR 45, Gurgaon

Class : Class 5

Ans 3:

Ashwak from Cambridge, Jalandhar

Class : Class 9

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

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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:

maanya from springdales, delhi

Class : Class 3

Correct answer is C

Ans 2:

Aarna Agarwal from Manav Rachna International School, Gurgaon

Class : Class 5

Ans 3:

Hamsini from yagappa international school, Thanjavur

Class : Class 5

c

Ans 4:

ALICE from Delhi Public School, UDAIPUR

Class : Class 9

Ans 5:

Aditri Dixit from TCIS, Bangalore

Class : Class 3

Ans 6:

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

Class : Class 3

Ans 7:

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

Class : Class 3

Ans 8:

Aditri Dixit from TCIS, Bangalore

Class : Class 3

C is the answer

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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.