National Science Olympiad Forum By SOF Olympiad Trainer - Page 309
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Dripto Goswami from Aditya Academy Secondary, Barasat, Barasat
Subject :NSO    Class : Class 3

Ans 1:

Havi Jain from GEMS modern academy, Gurgaon
Class : Class 8
A

Ans 2:

NAAYSHA from DPS NOIDA, NOIDA
Class : Class 3

Ans 3:

Agrim Singh Pal from DPS, Bangalore
Class : Class 3
I AM AGRIM IT IS EASY WRITH LET'S GO

Ans 4: (Master Answer)

Admin from revisewise, Noida
Class : Class 1

A

Granite is very hard to break while chalk can be easily powdered using hands.


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Shreshta from Presidium, Ghaziabad
Subject :NSO    Class : Class 4

Ans 1:

Bushra aslam from uttam, Ghaziabad
Class : Class 5
C C C

Ans 2:

ADVAY DHUA from dpsnoida, Noida
Class : Class 4
no correct answer for this bogus question. Mentioned that ant eaters lay eggs whereas they do not. they are mammals but they are not monotrems. answer can be c as butterfly lays eggs,platypus is a monotreme mammal so lays eggs, and flying lizard has wings.

Ans 3:

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

Ans 4:

Chinmaya Ratnagiri from DPS, HYderabad
Class : Class 4
There is no correct answer to this question.

Ans 5:

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

Ans 6:

Chinmaya Ratnagiri from DPS, HYderabad
Class : Class 4

Ans 7:

delakshi from chrysalsis high, bangalore
Class : Class 4
the answer is not c because lizard dont have wings

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Shweta Garg from Vibgyor high, Vadodara
Subject :NSO    Class : Class 6

Read the following statements.
(i) Air dissolved in water cannot be removed from it.
(ii) Density of air decreases with increasing altitude.
(iii) Air is an element that surrounds the Earth and makes it hospitable for living organisms.
(iv) Air helps in pollination of several flowers and in the dispersal of seeds.
Which of the above statements are correct?

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


Ans 1:

Kavyam Rustagi from Delhi Public School, Ethalbari , Binnaguri
Class : Class 4

Ans 2:

SOUVAGYA SAHA from De Nobili School, DHANBAD
Class : Class 10
ans is not option D as air is not an element , air is a mixture of many elements and compounds......further more statement 2 is correct as air density decreases with increasing altitude i.e air density decreases with increase in height

Ans 3:

Nuvin Khanna from Mount Olympus School, Gurgaon
Class : Class 6

Ans 4:

Souradeepto Das Mandal from Hyderabad Public School, Hyderabad
Class : Class 6

Ans 5:

Siddhani Nayak from DPS Paradip Refinery, Paradip
Class : Class 6

Ans 6:

Manaswini Aradhyula from DELHI PUBLIC SCHOOL BANGALORE EAST, Bengaluru
Class : Class 7

Ans 7:

Deeptajit Roy from Gems Modern Academy, Dubai
Class : Class 10
answer is D, air density decreases on increse in height

Ans 8:

Vasu tyagi from St Joseph's High school, Panvel
Class : Class 6
Answer is D.

Ans 9:

A S Neeraj from K V 2, Chennai
Class : Class 6
No ans is not D it's B because air is a mixture not an element.

Ans 10:

Kanishk Mukherjee from BDM International, Kolkata
Class : Class 6

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Bhavya Agrawal from Cambridge Court High School , JAIPUR
Subject :NSO    Class : Class 5

Ans 1: (Master Answer)

Admin from revisewise, Noida
Class : Class 1

C

The layer of the Earth, which is made up of solid and molten rocks and contains magnesium and iron is mantle, and is represented by R. Earth's mantle is made up of rock and molten lava containing silicon, iron, magnesium, aluminium, oxygen and other minerals.


Ans 2:

Dushyant Singh from Shri Ram Centennial School, Indore
Class : Class 6

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KEERTHANA SHIBU from INDIAN SCHOOL GHOUBRA, Oman
Subject :NSO    Class : Class 6

Which of the following should be done in case of burns?

AWrap a blanket around the burnt parts of the person.
BApply ghee, oil, etc. on the burn.
CCover the burn with thick cloth.
DPour cold water immediately on the burn till the burning sensation stops.


no check in google should not pour ice cold or cold water on burns..............................................................................................................................................................................................................................ISN'T IT???!!

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

Ans 1:

Gaurish Singla from DPS School Sector 19, Faridabad
Class : Class 8

Ans 2:

Sreevatsa Rajesh from Indian School Al Maabella, Oman
Class : Class 8
SHORT STRECHED AND THIN STRINGS OF GUITAR PRODUCE NOTE OF HIGH PITCH AND VICE VERSA

Ans 3:

Vartika Agarwal from Phoenix world school, Pune
Class : Class 9
yes

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Aanya Mehta from Gems Modern Academy, South City -2, Gurgaon, Gurgaon
Subject :NSO    Class : Class 4

Ans 1:

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 2:

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

Ans 3:

Ryan from YBIS , SINGAPORE
Class : Class 5

Ans 4:

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 5:

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

Ans 6:

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

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

Ans 1:

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

Ans 2:

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

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

Read the discussion given below. Which option holds true regarding this discussion?

Renu : Humus present in top layer of soil is good for plant growth.
Rashmi : Water cycle involves continuous processes of evaporation and condensation.
Sanjay : Drinking water polluted with wastes from sewage and homes causes diseases like malaria.
Deetya : Matter is anything that has mass and occupies space.

AOnly Sanjay and Deetya made correct statements.
BRenu made an incorrect statement while Rashmi and Sanjay made correct statements.
CRashmi, Deetya and Renu made correct statements.
DRenu and Sanjay made correct statements while Rashmi and Deetya made incorrect statements.


Water cycle involves evaporation condensation and precipitation.

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 7

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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