National Science Olympiad Forum By SOF Olympiad Trainer - Page 465
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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:

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

Ans 4:

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

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:

munish jindal from APJ school, Jalandhar
Class : Class 8

Ans 2:

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

Ans 3:

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 4:

Ritabrata Das from OPJS, Angul
Class : Class 7

Ans 5:

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

Ans 6:

AK from Shri Ram Aravali, Gurgaon
Class : Class 6

Ans 7:

Ananya Joshi from HFS Powai, Mumbai
Class : Class 5

Ans 8:

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

Ans 9:

nandini badola from christ school, dehradoon
Class : Class 5
correct answer is D

Ans 10:

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

Ans 11:

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

Ans 12:

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

Ans 13:

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

Ans 14:

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

Ans 15:

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

Ans 16:

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

Ans 17:

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

Ans 18:

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 19:

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

Ans 20:

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

Ans 21:

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

Ans 22:

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

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

Ans 1:

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

Ans 2:

Arohan from DAV, Hyd
Class : Class 6

Ans 3:

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

Ans 4:

Ritabrata Das from OPJS, Angul
Class : Class 7

Ans 5:

Ameya from New Era, Vadodara
Class : Class 3
ok

Ans 6:

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

Ans 7:

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

Ans 8:

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

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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:

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

Ans 2:

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 3:

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

Ans 4:

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 5:

VANSH GARG from DPSG, GHAZIABAD
Class : Class 4

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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
Hitting the cricket ball with a bat to make a run.

Ans 2:

VANSH GARG from DPSG, GHAZIABAD
Class : Class 4

Ans 3:

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

Ans 4:

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

Ans 5:

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

Ans 6:

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

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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:

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

Ans 2:

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

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