National Science Olympiad Forum By SOF Olympiad Trainer - Page 271
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Subham Mishra from WwA cossipore English school, kolkata
Subject :NSO    Class : Class 3

Ans 1:

Snigdha Agarwal from The Khaitan School, Noida
Class : Class 5
I think the answer is rubber

Ans 2:

Soumyajit Das from Hariyana Vidya Mandir, NORTH 24 PARGANAS
Class : Class 6

Ans 3:

SAMARPAN DAS from Notre Dame Academy, Salakati Kokrajhar
Class : Class 5

Ans 4:

Soumyajit Das from Hariyana Vidya Mandir, NORTH 24 PARGANAS
Class : Class 6
Wood is used to make a handle of a cooking pot.

Ans 5:

Samvita Patil from NHVPS, Bangalore
Class : Class 5

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veena from English medium school, loni
Subject :NSO    Class : Class 4

Ans 1:

jathin from national public school chikkabanavara, banglore
Class : Class 4
ans : c leaves and starch

Ans 2:

Midhuna from ABCD, Banglore
Class : Class 3
food for plants is made in leaves

Ans 3:

Midhuna from ABCD, Banglore
Class : Class 3

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Shuvangi Das from Vivekananda mission school, haldia
Subject :NSO    Class : Class 5

Ans 1:

Shuvangi Das from Vivekananda mission school, haldia
Class : Class 9
HJK

Ans 2:

Sanskriti Nagar from Rose Bud Academy, khagaria
Class : Class 5
B

Ans 3:

Shuvangi Das from Vivekananda mission school, haldia
Class : Class 9

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Krish from Sacred heart school, Kalyan
Subject :NSO    Class : Class 7

Ans 1:

Prachi Todalge from New India School, Pune
Class : Class 7
The correct answer is option B. Mounting occurs at LARVA STAGE only.

Ans 2:

Prachi Todalge from New India School, Pune
Class : Class 7
*Moulting

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Jishnu Dutta from St. Stephen's School, Kolkata
Subject :NSO    Class : Class 5

Ans 1: (Master Answer)

Admin from revisewise, Noida
Class : Class 1

A


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Bhavya Jha from Global City International School, Bangalore, Karnataka, India
Subject :NSO    Class : Class 7

Ans 1:

Agastya Tripathi from dps gurgaon, Gurgaon
Class : Class 4
ya

Ans 2:

Gauri Singh from St Johns School Marhauli, Varanasi
Class : Class 8
No, you should refer to the starting point of the graph.. The temperature at the beginning is also important.. So the right answer is option B

Ans 3:

Vivek sharma from Shiva international school, Chumarvin
Class : Class 8

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AISHA from K.V.No.-1,A.F.S.,SEC.-14, GURUGRAM
Subject :NSO    Class : Class 7

Ans 1:

Aadya mishra from SoI, Bangalore
Class : Class 7

Ans 2:

AISHA from K.V.No.-1,A.F.S.,SEC.-14, GURUGRAM
Class : Class 10
C IS CORRECT ANSWER

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Morom from DPS numaligarh, Golaghat
Subject :NSO    Class : Class 6

Ans 1:

Vasu tyagi from St Joseph's High school, Panvel
Class : Class 6
His image will form at 6m away from him because the distance between him and mirror is 3m so the image will form at 3m away from mirror .So the distance between him and mirror is 6m.

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Mahadevan from KV Rubber Board Kottayam, Kottayam
Subject :NSO    Class : Class 5

Raju, a farmer got his field checked for soil toxicity. The report showed high level of toxic chemicals in his field. How can these toxic chemicals in the soil be harmful?

AThey may enter any nearby waterbody due to runoff and cause algal bloom.
BThey are absorbed by food plants growing in the soil making them unfit for consumption.
CThey may get evaporated in the air causing air pollution.
DBoth A and B


Answer is B not D

Ans 1:

Sai Arinesh from ,
Class : Class 5
SORRY ABOUT THE MISUNDERSTANDING

Ans 2: (Master Answer)

Admin from revisewise, Noida
Class : Class 1

D

If these toxic chemicals enter the nearby waterbodies, they cause the microalgae population in the water-body to grow uncontrollably, causing algal bloom. These algae lower the oxygen levels in the water and cause harm to aquatic life. Toxic chemicals mixed with soil and water are absorbed by food plants and they become unfit for consumption. Toxic chemicals in the soil will cause soil pollution and water pollution. They will not cause air pollution.

 


Ans 3:

Sai Arinesh from ,
Class : Class 5
but the answer you have said is both A and B? IT SHOWS ANSWER = D

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AARNA Kapse from The swaminarayan school, Nagpur
Subject :NSO    Class : Class 3

Ans 1: (Master Answer)

Admin from revisewise, Noida
Class : Class 1

D

Reusing old cans, bottles and newspapers means you won’t be buying new ones from market. This will help to conserve natural resources that are used for making new cans, bottles and newspapers. So, this will help to control environmental pollution.


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