National Science Olympiad Forum By SOF Olympiad Trainer - Page 281
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Amol Athawale from WoodRidge High, aurangabad
Subject :NSO    Class : Class 8

Ans 1:

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

Ans 2:

Amol Athawale from WoodRidge High, aurangabad
Class : Class 6

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:

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

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ASHISH K DIXIT from JASPAL KAUR PUBLIC SCHOOL, NEW DELHI
Subject :NSO    Class : Class 7

Ans 1:

Mrittika Roy from DPS Ruby Park, Kolkata
Class : Class 3
All of the options are correct.

Ans 2:

Gauri Singh from St Johns School Marhauli, Varanasi
Class : Class 8
The answer is D.. The whole diagram is only showing the gynoecium or the female part of the flower only, so B is correct, as you got confused in..

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Lakshmi from FPS, Bangalore
Subject :NSO    Class : Class 6

Ans 1:

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

Ans 2:

Jatan from RBK Global, Thane
Class : Class 6

Ans 3:

Rochishnu Ghosh Hazra from Techno India Group Public School -Bolpur , Bolpur
Class : Class 9

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Lakshmi from FPS, Bangalore
Subject :NSO    Class : Class 6

Study the given experimental set-up and select the correct observation.


AA homogeneous mixture will be formed in test tubes 4 and 5.
BA heterogeneous mixture will be formed in test tubes 2 and 3 and solute particles will settle at the bottom after some time if left undisturbed.
CComponents in test tubes 5 and 6 are too small in size and hence cannot be separated by filtration.
DA heterogeneous mixture is formed in test tubes 1 and 2 and solute particles will float on the surface of water.


can anyone explain the solution

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Lakshmi from FPS, Bangalore
Subject :NSO    Class : Class 6

Ans 1:

Vasu tyagi from St Joseph's High school, Panvel
Class : Class 6
Answer is B 1.92 sec

Ans 2:

Lohithakshith Pati from Olive international school , qatar
Class : Class 8
why

Ans 3:

Ashi Goyal from Sacred heart convent school,raikot road,barnala, punjab
Class : Class 6
answer is d only.it is right

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Lakshmi from FPS, Bangalore
Subject :NSO    Class : Class 6

Ans 1:

Vasu tyagi from St Joseph's High school, Panvel
Class : Class 6
Answer is. A . correct explanation is on the answer .metals expand on heating !

Ans 2:

Shreya Yegna Narayanan from psbb, chennai
Class : Class 6
Hey! They have given contract see properly!

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

Ans 1:

Advita Ghelani from Rustomjee Cambridge, Mumbai
Class : Class 3
Small Intestine

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

Ans 1:

Advita Ghelani from Rustomjee Cambridge, Mumbai
Class : Class 3
Plants grow well in it since they can retain water and are loosely held

Ans 2:

Arjun Gourineni from CHIREC International School, Hyderabad
Class : Class 7

Ans 3:

Iraj Singh from DPS Megacity, Kolkata
Class : Class 8
Plants grow well in loamy soil so the option A should have loamy soil as the correct answer.

Ans 4:

Shreya Shruti from Airforce school , Bengaluru
Class : Class 7

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Aarav Srivastav from DWPS , Noida Extension
Subject :NSO    Class : Class 6

Ans 1:

Aarav Srivastav from DWPS , Noida Extension
Class : Class 7

Ans 2:

Vikram from AVM, Mumbai
Class : Class 5
Therefore none of the answers are right because tea leaves and polybags are are never incinerated

Ans 3:

Aarav Srivastav from DWPS , Noida Extension
Class : Class 7

Ans 4:

SHIRIN BHATTACHARYYA from St. Joseph's Convent School, KHANDWA
Class : Class 10

Ans 5:

Vikram from AVM, Mumbai
Class : Class 5
Polybags can never be incinerated ! pls check answers and dont confuse students

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

Few Natural resources are classified as:

P. Exhaustible
Q. Inexhaustible

Some natural resources are
(i) Petrol, diesel
(ii) Coal, petroleum
(iii) Air, water
(iv) Cow dung cakes, sunlight
(v) Forests, minerals

Which of the following represents the correct match?

A P-(iii), (iv); Q-(i), (ii), (v)
B P-(i), (ii), (v); Q-(iii), (iv)
C P-(ii), (v), Q-(i), (iii), (iv)
D None of these is a correct match.


how is cow dung cake a inexaustible resource ?

Ans 1:

Antarik Maity from Bharatiya Vidyabhaban, Kolkata
Class : Class 8
How can cow dung cakes and forests and minerals be an exhaustible resource as cow dung cakes are available in abundance and it will be available till all the cows on the earth die and sane goes for the forests. Minerals are also available in abundance and they are definitely inexhaustible.

Ans 2:

Amol Athawale from WoodRidge High, aurangabad
Class : Class 6
how is cow dung cake an inexaustible resource?

Ans 3:

Amol Athawale from WoodRidge High, aurangabad
Class : Class 6

Ans 4:

Garv T from Lilavatibai Podar, Mumbai
Class : Class 9
are forests and minerals really exhaustible resources?

Ans 5:

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

Ans 6:

Hprakash09 from Billabong high Bhopal, Bhopal
Class : Class 7
Forests and Minerals are DEFINETELY exhaustible resources, but Cow Dung Cakes are also exhaustable.

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