National Science Olympiad Forum By SOF Olympiad Trainer

Bhomesh Laxman Sangore from Ahinsa international School, Dondaicha , Dondaicha

Subject :NSO Class : Class 7

Sheep are the major source of wool. During the production of wool from a sheep, it passes through several steps, such as scouring (P), drying (Q), dyeing (R), spinning (S), shearing (T) and carding (U).Which of the following options shows the correct sequence of these steps?

AT → P → Q → U → R → S
BP → T → Q → R → U → S
CU → P → R → Q → T → S
DR → P → Q → T → S → U

A

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Anvi Paul from Navrachana School, Vadodara

Subject :NSO Class : Class 5

Ravi in his dream saw a strange animal which had six legs, orange hair on skin and one eye on the forehead. It was feeding its young one milk. If really existed, it would have belonged to the same group as _____.

A Guppy fish
B Butterfly
C Crocodile
D Cow

HOW CAN IT BE COW. DOES COW HAVE SIX LEGS?

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Arihant Medhi from Maharishi Vidya Mandir, Rangia

Subject :NSO Class : Class 6

Which of the following joints is present between thigh bone and shin bone?

AHinge joint
BPivot joint
CFixed joint
DBall and socket joint

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Yashraj Namdev Deshmukh from Sahyadri English School, Loha, Nanded

Subject :NSO Class : Class 6

Which of the following actions will help in reducing pollution?
(i) Drinking water from bottles made of glass or metals.
(ii) Using unleaded petrol in cars.
(iii) Spraying pesticides on plants to kill pests.
(iv) Carrying cotton or jute bags for shopping instead of polybags.

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

answer is b

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Tanmay singh from DPS Visakhapatnam , Visakhapatnam

Subject :NSO Class : Class 8

The sound wave with high frequency can be given by

A
B
C
D

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Ans 1:

AARAV AGRAWAL from BIRLA DIVYA JYOTI, SILIGURI

Class : Class 8

BRO the question is wrong

Ans 2:

AARAV AGRAWAL from BIRLA DIVYA JYOTI, SILIGURI

Class : Class 8

Olympiad pls check

Ans 3:

Ashmi Narkar from The Shishukunj International School, Jhalaria Campus, Indore

Class : Class 8

Sof please check

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Vivswan Garg from The Shri Ram School Aravali, Gurugram

Subject :NSO Class : Class 5

If your diet is deficient in citrus fruits then you are supposed to suffer from

ARickets
BBeri Beri
CScurvy
DNight blindness.

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Siddhant from Mris, ludhiana

Subject :NSO Class : Class 7

Which of the following options is correct for the object having a straight line motion represented by the graph shown in figure?

A The object moves with constantly increasing velocity from O to A and then it moves with constant velocity.
B Velocity of the object increases uniformly.
C Average velocity is zero.
D The graph shown is impossible.

Displacement is zero hence average velocity should be zero

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Ans 1:

Ivjot Singh Hanspal from Allen Career Institute, Surat

Class : Class 7

Answer is C

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ISHAN PANDEY from Podar international school , Ahmedabad

Subject :NSO Class : Class 5

The seed shown here is most likely to be dispersed by ______.

A Water
B Wind
C Animals
D Cannot say

B ( wind)

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Ans 1:

Anvi Paul from Navrachana School, Vadodara

Class : Class 5

HOW

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Praneel Hardikkumar Patel from Lalji mehrotra lions school, Ahmedabad

Subject :NSO Class : Class 4

The graphs below show the relationship between two organisms.

(A) What is the relationship between the two organisms P and Q?
(B) During which period do you think organism M was introduced?
(C) What new food chain forms between organisms P, Q and M?