National Science Olympiad Forum By SOF Olympiad Trainer

Aahana Agarwal from NPS Koramangala, Bengaluru

Subject :NSO Class : Class 4

Refer to the given picture which shows our solar system and select the INCORRECT option.

AQ is known as the evening star and P is the smallest planet.
BR is a rocky planet while S is made up of gases.
CT is the largest planet and R is also known as blue planet.
DW has 14 moons while Q is the hottest planet.

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Ans 1:

Kiran from DPS, Bengaluru

Class : Class 4

bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb

Ans 2:

Kiran from DPS, Bengaluru

Class : Class 4

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Ans 3:

Kiran from DPS, Bengaluru

Class : Class 4

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Lakshmi from FPS, Bangalore

Subject :NSO Class : Class 5

The layer of the Earth, which is made up of solid and molten rocks and contains magnesium and iron is represented by which letter in the diagram?

AP
BQ
CR
DS

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Ans 1:

Debarpan Das from Delhi Public School , Durgapur

Class : Class 9

Ans 2:

Ramansh from kudos international, bundi

Class : Class 5

Ans 3:

from Dav public school brs nagaR ludhiana, LUDHIANA

Class : Class 6

C

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Samudyatha K B from NPS banashankari, Bangalore

Subject :NSO Class : Class 8

Select a figure from the options in which Fig. (X) is exactly embedded as one of its part.

A

B

C

D

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Samaira from Global Indian International School, Bangalore

Subject :NSO Class : Class 7

Meenakshi walks 1 km towards East and then she turns to South and walks 5 km. Again she turns to East and walks 2 km, after this she turns to North and walks 9 km. Now, how far is she from her starting point?

A3 km
B4 km
C5 km
D7 km

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Ans 1:

DIVYA SRIRAM from YUVABHARATHI INTERNATIONAL SCHOOL, SINGAPORE

Class : Class 9

Ans 2:

Nimisha Tambe from Narayana vidyalayam, Nagpur

Class : Class 8

Ans 3:

Shreejal moharana from DPS Greater Faridabad, Faridabad

Class : Class 8

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Darshini Chakravarty from Pinnacle High International School, Mumbai

Subject :NSO Class : Class 3

Refer to the given flow chart and answer the following questions.

Select the correct option regarding the heavenly body Z.

A Gravity on Z is 1/6th of the gravity on Y.
B Orbit of Z is a circular path around X.
C Z completes a rotation around X in about 28 days.
D Z has a smooth, even surface with many oceans and craters.

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Ans 1:

Ridhan from SFS janakpuri, New Delhi

Class : Class 5

the correct answer is a

Ans 2:

Avighna Shastri from doha modern indian school, doha

Class : Class 2

Ans 3:

Nirvi Pal from jasudben ML School, mumbai

Class : Class 5

RRRRRRRRRRRRRRRRRRRRRRRRR

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Bhabani Prasad from Narayan School, Kolkata

Subject :NSO Class : Class 6

In the given gear system, which of the arrows is incorrectly marked?

AP
BQ
CR
DS

It can be R also if we take the gear system starting from Q. Q moves anticlockwise while R moves anticlockwise. So here R can be also the correct answer.

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Ans 1:

devansh gaurangi from Stella Maris School , Lucknow

Class : Class 8

It can be Q because if P is moved clockwise then R would move anticlockwise making Q move clockwise, but if Q moves anticlockwise then it will make R move clockwise making P move anticlockwise, which is it's opposite. So Q is incorrectly marked.

Ans 2:

devansh gaurangi from Stella Maris School , Lucknow

Class : Class 8

If P is moved in clockwise direction then R would move in anticlockwise direction with P, but if Q moves anticlockwise then R will move clockwise and P would move Anticlockwise, which is opposite of it. So Q is incorrectly marked.

Ans 3:

Shayan Bari from Kendriya Vidyalaya, Katihar

Class : Class 7

If p is the driving gear then all are right.

Ans 4:

prince daniel jonah J from st Joseph central school, Mysore

Class : Class 10

Q OR S ONE OF THEM IS INCORRECTLY MARKED

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

Subject :NSO Class : Class 6

About ____________of Earth's surface is covered with water.

A3/4^th
B2/3^rd
C1/5^th
D1/4^th

Itâs option B

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Ans 1:

Akshara from sishya OMR , chennai

Class : Class 8

Ans 2:

SAMPAD BANERJEE from DELHI PUBLIC SCHOOL , BILASPUR

Class : Class 9

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Manvi Mundepi from Montfort School Roorkee, Roorkee

Subject :NSO Class : Class 6

Pointing to a man in a photograph, Suhani said, "His mother's only daughter is my mother." How is Suhani related to the man?

AMother
BSister
CWife
DNiece

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Ans 1:

Kushal from Chirec, Hyderabad

Class : Class 7

i think the answer is niece

Ans 2:

Navya from Jankidevi public school , Jaipur

Class : Class 6

How

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Sanskriti Ranjan from SETH ANANDRAM JAIPURIA SCHOOL, Ghaziabad

Subject :NSO Class : Class 7

Which of the following does not represent a correct match of the mixture and the method used to separate the components?

ASugar and camphor – Sublimation
BSugar and water – Distillation
CIron powder and sand – Magnetic separation
DSawdust and stones – Decantation

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Ans 1:

Shayan Bari from Kendriya Vidyalaya, Katihar

Class : Class 7

d

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Champ from Reliance Foundation School, Mumbai

Subject :NSO Class : Class 7

The given figure shows a turkey, a flightless bird. Why cannot a turkey fly?

(i) It has underdeveloped wings.
(ii) It is too heavy.
(iii) It has hollow bones.
(iv) It has very few feathers.

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

do turkey have underdeveloped wingsI do not think so

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Ans 1:

Prisha Gupta from Lokhandwala Foundation School, Mumbai

Class : Class 7

the correct answer is b

Ans 2:

Nandu from The Asian School, Bahrain

Class : Class 3

bruh ans is b

Ans 3:

Prachi Todalge from New India School, Pune

Class : Class 7

Ans 4:

Mridul Jain from Shishukunj International School Indore, Indore

Class : Class 9

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