National Science Olympiad Forum By SOF Olympiad Trainer - Page 327
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Aanya Mehta from Gems Modern Academy, South City -2, Gurgaon, Gurgaon
Subject :NSO    Class : Class 4

Ans 1:

jathin from national public school chikkabanavara, banglore
Class : Class 4
the correct answer is D because if we throw untreated industrial waste the water bodies the water might get polluted and cannot be safe for drinking and for our uses as it can cause some harmful diseases like cholera and jaundice and also harms the plants and animals in the water

Ans 2:

Ryan from YBIS , SINGAPORE
Class : Class 5

Ans 3:

Aanya Mehta from Gems Modern Academy, South City -2, Gurgaon, Gurgaon
Class : Class 4
4 ans is D cause if we throw untreated industrial wastes in water bodies they will get polluted and we won t be able to drink it

Ans 4:

TARA NAUTIYAL from CONVENT OF JESUS AND MARY, DEHRADUN
Class : Class 4
d is the correct answer because if we throw untreated industrial waste it harms the water we drink

Ans 5:

Ayushman Atreya from Little Heart Toddlers Academy, Angul
Class : Class 3

Ans 6:

Ayushman Atreya from Little Heart Toddlers Academy, Angul
Class : Class 3
hhjj

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SWARIT JAIN from DPS Greater Noida, GREATER NOIDA
Subject :NSO    Class : Class 4

Ans 1:

jathin from national public school chikkabanavara, banglore
Class : Class 4
the correct answer is : B

Ans 2:

Dishita Santosh Walujkar from Nutan English School, Kurduwadi
Class : Class 7
B

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Shreya Shruti from Airforce school , Bengaluru
Subject :NSO    Class : Class 3

Ans 1:

Advika Narkar from The Shishukunj International School, Jhalaria Campus, Indore
Class : Class 8
How it is C?Malaria is a water-borne disease spread by mosquitoes.They come near polluted water and may leave infectious germs.

Ans 2:

Shreya Shruti from Airforce school , Bengaluru
Class : Class 8

Ans 3:

Ashutosh Baral from mother public school , Bhubaneswar
Class : Class 8

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ARNESH CHAKRABARTI from RAM MOHAN MISSION, KOLKATA
Subject :NSO    Class : Class 5

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Priyam Bhattacharya from cambridge court high school, jaipur
Subject :NSO    Class : Class 6

Ans 1:

ARUNAV from DPS VINDHYANAGAR, VINDHYANAGAR
Class : Class 10
vasu, no need to apply properties. The options which have both pulled and repelled , are magnet

Ans 2:

Ayush Chauhan from Modern Public School, Bhiwadi
Class : Class 9
yes arunav you are right

Ans 3:

Vasu tyagi from St Joseph's High school, Panvel
Class : Class 6
answer is C reason ; magnet :p x point is north pole because it repeled to north pole and other one attract to it then it is south pole .In magnet Q :point x attracted to north pole of real magnet and y reppled then both are said to be magnet.

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ICHALKARANJI from dkte, ichalkranji
Subject :NSO    Class : Class 8

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Saarth Agrawal from Podar International School , Mumbai
Subject :NSO    Class : Class 4

Ans 1:

Soumyajit Das from Hariyana Vidya Mandir, NORTH 24 PARGANAS
Class : Class 7
SOLUTION PLS

Ans 2:

Arnav Raj Sharma from GEMS International School the ultra master mega, Gurgaon
Class : Class 7
give solution

Ans 3:

jathin from national public school chikkabanavara, banglore
Class : Class 4
the correct option is : A ]

Ans 4:

Saarth Agrawal from Podar International School , Mumbai
Class : Class 6
Please someone tell me the answer

Ans 5:

Saarth Agrawal from Podar International School , Mumbai
Class : Class 6

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Saarth Agrawal from Podar International School , Mumbai
Subject :NSO    Class : Class 4

Ans 1:

Saarth Agrawal from Podar International School , Mumbai
Class : Class 6

Ans 2:

Ishan Manjith from Loyola ICSE, THIRUVANANTHAPURAM
Class : Class 4
Giveso lutionscie nceolymp iad

Ans 3:

SS from meridian, hyderabad
Class : Class 5
give solution please

Ans 4:

Aarya Ranjan from Chrysalis High Varthur, bangalore
Class : Class 5
solution please

Ans 5:

Arnav Raj Sharma from GEMS International School the ultra master mega, Gurgaon
Class : Class 7
giveslution

Ans 6:

RAGHAV VARSHNEY from CITY MONTESSORI SCHOOL GOMTINAGAR LUCKNOW, Lucknow
Class : Class 3

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Syed Mohammad Hussain from ISAM, Muscat
Subject :NSO    Class : Class 5

Ruchi categorised animals on the basis of their body coverings. She made three groups and by mistake placed one wrong member in each group. Identify the wrong member of each group and select the correct option.
Group I - Snake, Lizard, Crab
Group II - Sloth, Platypus, Salmon
Group III - Penguin, Pigeon, Grasshopper

ACrab of group I should be interchanged with grasshopper of group III.
BSalmon of group II should be replaced with toad.
CPlatypus of group II should be interchanged with pigeon of group III.
DGrasshopper of group III should be replaced with parakeet.


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Ans 1: (Master Answer)

Admin from revisewise, Noida
Class : Class 1

D

In group III, body of penguin and pigeon is covered with feathers. Similarly body of parakeet is also coverd with feathers. So, grasshopper of group III should be replaced with parakeet.


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Amol Athawale from WoodRidge High, aurangabad
Subject :NSO    Class : Class 8

Ans 1:

Amol Athawale from WoodRidge High, aurangabad
Class : Class 7

Ans 2:

Chatresh ramasai gudi from Bgsnps , Bangalore
Class : Class 8
It’s IUCN that maintains red data book

Ans 3:

Anshuman D from MVM, Hyderabad
Class : Class 9
Even I think so As the red data book is maintained with IUCN not WCU

Ans 4:

Aditya Karri from Ganges School, Hyderabad
Class : Class 9
Yes IUCN maintains the Red Data Book, not the WCU. Please look into it

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