National Science Olympiad Forum By SOF Olympiad Trainer - Page 460
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swayam shah from delhi public school vadodara, Vadodara
Subject :NSO    Class : Class 8

Ans 1:

ABDUL Rahman SIDDIQUI from Indian school al maabela , muscat
Class : Class 9

Ans 2:

Aryan Raina from MGN Public School, Jalandhar
Class : Class 8
no guys m sorry but their answer is correct as when we wear water goggle we can see clear. its fault our eyes not water.

Ans 3:

Simar Narula from Rishi Coaching Institute , Jaipur
Class : Class 8
The answer must be Option B

Ans 4:

Avyukth Radhakrishnan from TSRS, Gurgaon
Class : Class 10
b?

Ans 5:

Aryan Raina from MGN Public School, Jalandhar
Class : Class 8
ya its b

Ans 6:

Nikita Sehgal from Apeejay School Mahavir Marg , Jalandhar
Class : Class 8
Yes the answer needs to b option B

Ans 7:

Avyukth Radhakrishnan from TSRS, Gurgaon
Class : Class 10

Ans 8:

Anjisha Chakraborty from Mount Litera Zee School, Jabalpur
Class : Class 5
Option B

Ans 9:

Dev Rawat from R D Rajpal School, New Delhi
Class : Class 8
I too did B but the answer according to sof is DPlease explain

Ans 10:

Jasleen Kaur Brar from St Joseph's convent sen sec school, bathinda
Class : Class 9
Even i chose option B. Plz explain why would the answer be option D

Ans 11:

hrishikesh giri basumatary from marias public school, Guwahati
Class : Class 6

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Aaryaman Pradhan from De paul School , Berhampur
Subject :NSO    Class : Class 4

Ans 1:

Aadya Kawale from Podar International ICSE , Dombivli East
Class : Class 4
Given figures show the shapes of Moon seen from Earth on different nights:We know that the moon changes from one phase to the next in approximately 3 days. Same is shown by the above figures. Let’s see what all phases the moon has, and put the above given dates to the right phases:That means on January 17, it would be a crescent moon – waxing crescent moon.Hence, the right answer is Option D.

Ans 2:

AAYANSH from SMT.L.B.JOSHI ENGLISH HIGH SCHOOL, Thane
Class : Class 4

Ans 3:

AVANTIKA V from Amrita Vidyalayam Puducherry , Puducherry
Class : Class 4
D

Ans 4:

Isabelle Joy from The Shriram Millennium School Noida , Noida
Class : Class 4

Ans 5:

AAYANSH from SMT.L.B.JOSHI ENGLISH HIGH SCHOOL, Thane
Class : Class 4

Ans 6:

UMANG from spring dale college, Lucknow
Class : Class 7
the answer is D. because after the full moon, there comes the glibbous moon

Ans 7:

Sushree snehasikta behera from Mother's public school , Bhubaneswar
Class : Class 2
D is the correct answer as the moon takes approximately 3 days change from one phase to another. after new moon cresent moon comes.

Ans 8:

Ridhan from SFS janakpuri, New Delhi
Class : Class 5
answer is d because after new moon cresent moon comes after 2 days

Ans 9:

AAYANSH from SMT.L.B.JOSHI ENGLISH HIGH SCHOOL, Thane
Class : Class 4
eweaafdzdxfdxfxfxcxhvcxhfd ttfutdxdxudfxudfxfccfcf

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Naman surana from Witty international udaipur, Udaipur
Subject :NSO    Class : Class 8

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Ajoy Bhuyan from DELHI PUBLIC SCHOOL, Bongaigaon
Subject :NSO    Class : Class 4

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Naman surana from Witty international udaipur, Udaipur
Subject :NSO    Class : Class 8

Ans 1:

Akshara from NPS, Bengaluru
Class : Class 8
Option b is the correct answer .

Ans 2:

Aryan Raina from MGN Public School, Jalandhar
Class : Class 8
answer b is right

Ans 3:

swayam shah from delhi public school vadodara, Vadodara
Class : Class 4
it will be option b light falls on screen in reverse order of VIBGYOR after dispersion

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Naman surana from Witty international udaipur, Udaipur
Subject :NSO    Class : Class 8

Ans 1:

Akshara from NPS, Bengaluru
Class : Class 8
correct answer is c

Ans 2:

Chaitanya L K from SKCHEC, bangalore
Class : Class 8
Answer is A

Ans 3:

Naman surana from Witty international udaipur, Udaipur
Class : Class 8

Ans 4:

Ashmi Narkar from The Shishukunj International School, Jhalaria Campus, Indore
Class : Class 9
SOF has given c as correct option in its own contentPlz verify and check...

Ans 5:

Student from School, City
Class : Class 8
The beam is parallel, so the light should not show any change whether it is near or away.

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Jayaditya singh from Delhi Public School, gurgaon
Subject :NSO    Class : Class 3

Ans 1:

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

Ans 2:

Darshini Chakravarty from Pinnacle High International School, Mumbai
Class : Class 4
b

Ans 3:

Yashaswin from KV afs begumpet, Hyderabad
Class : Class 4
C

Ans 4:

Avyukta Saraswat from St Francis School , Greater noida west
Class : Class 3
what is silca

Ans 5:

divita saxena from bhavans vidya mandir ashti , nagpur
Class : Class 4
d as graphite is used to make pencil lead and bulb is made up of tungsten

Ans 6:

Jayaditya singh from Delhi Public School, gurgaon
Class : Class 9
B

Ans 7:

Raghav Srinivasan from new horizon, bangalore
Class : Class 4

Ans 8:

ANSHUL GAJJAR from PODAR INTERNATIONAL SCHOOL, AHMEDABAD
Class : Class 3
B

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Jayaditya singh from Delhi Public School, gurgaon
Subject :NSO    Class : Class 3

Ans 1:

aadvik from Dpsk, Guwahati
Class : Class 6
i am claas 3b RGS

Ans 2:

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

Ans 3:

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

Ans 4:

Aradhya Shankar from Vibgyor, Kolhapur
Class : Class 4
i am in 3b class

Ans 5:

Anaahad Mehar Satsangi from Delhi Public School Agra, Agra
Class : Class 3
Class = 3B chalk powder

Ans 6:

Jayaditya singh from Delhi Public School, gurgaon
Class : Class 9
A

Ans 7:

Arohan chatterjee from North Point SSBS, Kolkata
Class : Class 9
Ans. B

Ans 8:

divita saxena from bhavans vidya mandir ashti , nagpur
Class : Class 4
b chalk powder

Ans 9:

EASHAAN K SURESH from KANGEER VALLEY ACADEMY, Raipur
Class : Class 5
B

Ans 10:

Arth Karna from Presidium, New Delhi
Class : Class 3
VERY GOOD !!!!!!""""""""""

Ans 11:

Bhavikaa kedia from Anand Niketan Satellite, Ahmedabad
Class : Class 5
B

Ans 12:

SIDDHARTH SOMANI from Vibgyor High, Mumbai
Class : Class 5
B

Ans 13:

Avyukta Saraswat from St Francis School , Greater noida west
Class : Class 3
the correct answer is option d

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Saranyaa Adak from Delhi Public School, Durgapur
Subject :NSO    Class : Class 8

Ans 1:

Iba Khan from DPS , Noida
Class : Class 8

Ans 2:

Pravir Mishra from National Public School, Bengaluru
Class : Class 8

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Agastya Tripathi from dps gurgaon, Gurgaon
Subject :NSO    Class : Class 5

Ans 1:

Devina kashyap from TPS, Mumbai
Class : Class 4
i am not satisfied with the answer D is also correct

Ans 2:

Agastya Tripathi from dps gurgaon, Gurgaon
Class : Class 4

Ans 3:

gautam from GIIS KL, Kuala Lumpur
Class : Class 5
how is d correct deforestation destroys habitats while afforestation is planting trees which does the opposite.the answer is a

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