National Science Olympiad Forum By SOF Olympiad Trainer - Page 329
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Shreya Shruti from Airforce school , Bengaluru
Subject :NSO    Class : Class 3

Ans 1:

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

Ans 2:

Iraj Singh from DPS Megacity, Kolkata
Class : Class 9
Plants grow well in loamy soil so the option A should have loamy soil as the correct answer.

Ans 3:

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

Ans 4:

Shreya Shruti from Airforce school , Bengaluru
Class : Class 8

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

Ans 1:

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

Ans 2:

Aarav Srivastav from DWPS , Noida Extension
Class : Class 7

Ans 3:

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

Ans 4:

Aarav Srivastav from DWPS , Noida Extension
Class : Class 7

Ans 5:

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

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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:

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

Ans 3:

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

Ans 4:

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

Ans 5:

Amol Athawale from WoodRidge High, aurangabad
Class : Class 7
how is cow dung cake an inexaustible resource?

Ans 6:

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.

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Vihaan kohli from MVN Aravali, Faridabad
Subject :NSO    Class : Class 3

Ans 1:

Ava from trio, bangalore
Class : Class 2
B

Ans 2:

Advita Ghelani from Rustomjee Cambridge, Mumbai
Class : Class 3
Beena, Ashu and Shuchi because Kiwi, Ostrich, Emu cannnot fly Penguins have a thin coat of feathers All birds lay eggs THEY ALL HAVE BEAKS AND A BACKBONE

Ans 3:

AADYA TANDON from DPS NOIDA SEC-30, Noida
Class : Class 5
B

Ans 4:

Jivyan from KIIT world school, Gurgaon
Class : Class 3
b

Ans 5:

Shruti from ,
Class : Class 1
B

Ans 6:

SPRIHA SINGH from KV BEML Nagar, KGF
Class : Class 4
The correct answer is B.

Ans 7:

Achyut Rai from THE KHAITAN SCHOOL, NOIDA
Class : Class 7
B

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

Ans 1: (Master Answer)

Admin from revisewise, Noida
Class : Class 1

C

When a bomb explodes, chemical energy stored in the chemicals that form the bomb converts into heat, sound and light energy.


Ans 2:

Shreejith from EuroSchool , Bangalore
Class : Class 7
CWhen a bomb explodes,chemical energy stored in the chemicals that form the bomb converts into heat, sound and light energy.

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

Ans 1:

Ankit kumar Jha from Ryan International School , Ghaziabad
Class : Class 9
ans D is the correct answer as silver turns black after reaction to hydrogen sulphide

Ans 2:

Kaushik Srivatsa H from Bala Vidya Mandir Global, Bangalore
Class : Class 7
Silver turns black, not green. And also silver does not react with water. So, obviously D is the answer.

Ans 3:

Daksha Swaminathan from Horiozon Scholars and Neo Kids, Mumbai
Class : Class 8

Ans 4:

Student from School, City
Class : Class 8
Silver can also react with SO2, sulphur dioxide, to tarnish.

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aadityaarmaan from KVS Chabua, Dibrugarh
Subject :NSO    Class : Class 7

Ans 1:

aarav shankar from st xaviers high school, gurugram
Class : Class 7

Ans 2:

Raksha Pankaj Jangam from Millennium National School , Karve naga pune
Class : Class 7

Ans 3:

Gauri Singh from St Johns School Marhauli, Varanasi
Class : Class 8
20 mL multiplied by 10 equals 200 ml.. likewise, multiply 1 min by 10. the answer is 10 minutes or 600 seconds.

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saisavit from sri kumaran ps, bangalore
Subject :NSO    Class : Class 3

Ans 1:

Ivan Tyagi from Chirec International School , Hyderabad
Class : Class 8
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Ans 2:

akshitha from Euroschool, Bengaluru
Class : Class 3
d is the answer

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Vedant Sharma from JPHS, Jaipur
Subject :NSO    Class : Class 5

Ans 1:

Dhairya from GREEN FIELDS SCHOOL, DELHI
Class : Class 8
a b c d

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ADITYA KISHOR from dps, gaya
Subject :NSO    Class : Class 9

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