National Science Olympiad Forum By SOF Olympiad Trainer - Page 471
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Dibyanshu Lahiri from Mont Fort Sr Sec School, Roorkee
Subject :NSO    Class : Class 8

Ans 1:

Aryan Keswani from Delhi Public School, Mathura Road, New Delhi
Class : Class 10
Answer is A Because the question is "ABOVE THE AUDIBLE RANGE, not within"

Ans 2:

Vartika Agarwal from Phoenix world school, Pune
Class : Class 9
correct answer should be c

Ans 3:

AKSHAJ SRIVASTAVA from MOUNT LITERA ZEE SCHOOL, Kanpur
Class : Class 9
how many kHz = Hz

Ans 4:

Kashish Kathuria from Delhi Public School, Bangalore
Class : Class 9
1000

Ans 5:

Vartika Agarwal from Phoenix world school, Pune
Class : Class 9
kHz = 1000Hz

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Vatsala from DPS, Durg
Subject :NSO    Class : Class 5

Ans 1:

AK from Shri Ram Aravali, Gurgaon
Class : Class 6

Ans 2:

nandini badola from christ school, dehradoon
Class : Class 6
correct answer is D

Ans 3:

Shaanvi from ,
Class : Class 5
Correct answer is D not B!

Ans 4:

Kashvi Rawat from Gear Innovative International School, Bengaluru
Class : Class 3
D is the correct answer

Ans 5:

sujata patel from Podar International, Pune
Class : Class 6
I DISCUSSED A LOT .SEARCHED ON GOOGLE. MALARIA IS A NON COMMUNICABLE DISEASE.PLEASE explain IT

Ans 6:

Ritabrata Das from OPJS, Angul
Class : Class 7

Ans 7:

Devrajan from Amity International School, Noida
Class : Class 8
Option D is the correct answer

Ans 8:

VAIBHAV RAI from Cambridge Court High School, JAIPUR
Class : Class 8
no option is correct

Ans 9:

Samyuktha from Sri Chaitanya, Chennai
Class : Class 7
D is the correct answer

Ans 10:

Divyanshi from United international School, Bangalore
Class : Class 6
none of the options are correct.

Ans 11:

DIPTANGSU PARBAT from SOUTH POINT HIGH SCHOOL, Kolkata
Class : Class 7

Ans 12:

SWAPNIL PAHARI from FUTURE CAMPUS SCHOOL, KOLKATA
Class : Class 8
the correct answer will be both option b and d

Ans 13:

Bhavikaa kedia from Anand Niketan Satellite, Ahmedabad
Class : Class 5
I tried reporting an error but it did not work. Please try as well

Ans 14:

munish jindal from APJ school, Jalandhar
Class : Class 8

Ans 15:

SIDH DALMIA from GEMS MODERN ACADEMY, Dubai
Class : Class 6
NONE OF THE OPTIONS ARE CORRECT

Ans 16:

Riya Gupta from Birla Divya Jyoti, Siliguri
Class : Class 8
correct answer should be D

Ans 17:

Ananya Joshi from HFS Powai, Mumbai
Class : Class 5

Ans 18:

CHIRAG KHORIA from EVERGREEN PUBLIC SCHOOL, MAYNAGURI
Class : Class 5
no option is corect,it is d with the diseases interchanged

Ans 19:

Mridul Jain from Shishukunj International School Indore, Indore
Class : Class 9
Pls explain

Ans 20:

Pragun goel from Venkateshwar International School, Delhi
Class : Class 8
None of the options are correct

Ans 21:

Kashvi Rawat from Gear Innovative International School, Bengaluru
Class : Class 3
none of the options are correct

Ans 22:

AK from Shri Ram Aravali, Gurgaon
Class : Class 6
D is correct

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Avantika Nair from The Study, Pondicherry
Subject :NSO    Class : Class 5

Ans 1:

Ameya from New Era, Vadodara
Class : Class 3
ok

Ans 2:

Ritabrata Das from OPJS, Angul
Class : Class 7

Ans 3:

Arohan from DAV, Hyd
Class : Class 6

Ans 4:

Sachin Rajan from Lokmanya Vidhya Niketan , Indore
Class : Class 5
It's D option

Ans 5:

Sartha from Podar International School Kolhapur, Kolhapur
Class : Class 5

Ans 6:

Divit Srivastava from NPS , Bangalore
Class : Class 4
its a

Ans 7:

Aadvik Kayastha from Lotus Valley International School, Gurgaon
Class : Class 5
its c

Ans 8:

Saumya Bhope from GK Gurukul, Pune
Class : Class 5
what is the framework of a bone?

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arjun from the bishops school camp , pune
Subject :NSO    Class : Class 6

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VANSH GARG from DPSG, GHAZIABAD
Subject :NSO    Class : Class 3

Ans 1:

Atri Pradhan from Oxebow English School, Gobardanga
Class : Class 3
when we put some water in a soil surface, we cold see small bubbles on the soil surface.

Ans 2:

FAIZA AMIN from SAINT XAINS INTERNATIONAL SCHOOL ANANTNAG, ANANTNAG
Class : Class 3
D

Ans 3:

Atri Pradhan from Oxebow English School, Gobardanga
Class : Class 3
If we in a soil sample, we would see small bubbles on the soil sample.

Ans 4:

VANSH GARG from DPSG, GHAZIABAD
Class : Class 4

Ans 5:

sujan from scholars world school, hassan
Class : Class 3
D)

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VANSH GARG from DPSG, GHAZIABAD
Subject :NSO    Class : Class 3

Ans 1:

VANSH GARG from DPSG, GHAZIABAD
Class : Class 4

Ans 2:

divita saxena from bhavans vidya mandir ashti , nagpur
Class : Class 4
c as in a b d force pull is used

Ans 3:

Naisha Gupta from DPS School, Khajaguda, Hyderabad
Class : Class 3
c

Ans 4:

Karangat house from Navy Children School, Payyannur
Class : Class 3
c

Ans 5:

Shivesh Dan from BAL BHARATI PUBLIC SCHOOL, NOIDA
Class : Class 3

Ans 6:

Atri Pradhan from Oxebow English School, Gobardanga
Class : Class 3
Hitting the cricket ball with a bat to make a run.

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Aaryav Tiwari from DPS VK, Delhi
Subject :NSO    Class : Class 6

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Aaryav Tiwari from DPS VK, Delhi
Subject :NSO    Class : Class 6

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Pranav Kiran Rajarathna from The Samhita Academy, Bangalore
Subject :NSO    Class : Class 4

Ans 1:

Tanishka Laha from Euroschool, Bengaluru
Class : Class 5
(A) cannot be the right answer as once the water vaporizes, there is no scope for sedimentation. (B) cannot be the right answer as once the mixture is filtered, the sand shall be collected on the filter paper while the clean water shall be collected in a beaker.Evaporation is not required. The answer is (C) because sand is heavier than water and shall settle down at the bottom of the beaker.This process is called sedimentation.Subsequently,the clear water from the top can be decanted out. (D) cannot be the right answer as once decantation is done, the clear filtrate shall be left over and filtration is not required.

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HARSHAL KUTE from cambridge school buldhana, Buldhana
Subject :NSO    Class : Class 7

Ans 1:

Dhairya Vinayak from Loyola High School, Patna
Class : Class 8

Ans 2:

Vedang Shridhar Sasturkar from Vasant Valley School, New Delhi
Class : Class 7
It is correct as vaporisation increases with increased wind speed

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