National Science Olympiad Forum By SOF Olympiad Trainer - Page 731
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Aarya Gupta from Seedling Modern Public School, Udaipur
Subject :NSO    Class : Class 3

Ans 1:

YASH KUMAR from St.Joseph, Shaktinagar
Class : Class 3
shadow Q in picture is not right.it is near to noon.so shadow should be smaller.

Ans 2:

Arrunabh from Delhi public school, Indore
Class : Class 3

Ans 3:

Daksh from RKC, Rajkot
Class : Class 8
Hey Sonia, Shadow P will be formed in the morning and not R.Shadow will be formed in the opposite direction of Sun.

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Arnav from DRDO KV School, banaglore
Subject :NSO    Class : Class 4

Ans 1:

Soham Popat from Doon Public School, Bhuj
Class : Class 5
option c

Ans 2:

A Andrew from Lalaji Memorial Omega International School, Chennai
Class : Class 5
obviously option C

Ans 3:

Prisha from Podar International School Thane, Thane
Class : Class 5
OPTION C IS THE FOOT OF A HEN.

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rchanakamra from chs,dhuri, dhuri
Subject :NSO    Class : Class 8

Ans 1:

lakshay gupta from DPS, New Delhi
Class : Class 9
it should be A

Ans 2:

PRRETI CHAUDHURY from KENDRIYA VIDYALAY NO.1 BNUBANESWAR, BHUBANESWAR
Class : Class 9
A

Ans 3:

SUBRATA MUKHERJEE from ,
Class : Class 7
I guess b since H2 can be obtained

Ans 4:

Anjisnu Raha from SBOA School and Junior College, Chennai
Class : Class 9
correct answer (A). natural gas is a clean fuel.

Ans 5:

mohsin khan from oasis english school, Parbhani
Class : Class 8
D

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rchanakamra from chs,dhuri, dhuri
Subject :NSO    Class : Class 8

Ans 1:

Anjisnu Raha from SBOA School and Junior College, Chennai
Class : Class 9
black vessel will radiate more heat and cannot retain heat of water. so answer, is (B)

Ans 2:

lakshay gupta from DPS, New Delhi
Class : Class 9
we know that black absorbs heat but it also radiates heat

Ans 3:

lakshay gupta from DPS, New Delhi
Class : Class 9

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rchanakamra from chs,dhuri, dhuri
Subject :NSO    Class : Class 8

Ans 1:

Apoorva106 from Little Angels Sr. Sec. School, Sonepat
Class : Class 8
harry's fastest lap time is 25.3 s the question says if he maintains his average speed of his FASTEST lap time if he completes his fastest lap in 25.3 s, he would complete 100 laps in 25.3 * 100 = approx. 2529 seconds

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Joy Poddar from ,
Subject :NSO    Class : Class 7

Ans 1:

from , Kolkata
Class : Class 9
The animals in both option c and d do not have common mode of feeding.

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prathima from Gopalan international school , Bangalore
Subject :NSO    Class : Class 3

Ans 1:

nandana k menon from Indian School Al Ghubra, Ghubra
Class : Class 7
Squirrels are not herbivores, but omnivores.They feed on plants and animals.

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Jeronee from Christwood School, PERUMBAKKAM
Subject :NSO    Class : Class 3

Ans 1:

Shivangi singh from Dps greater Noida, Greater Noida
Class : Class 4

Ans 2: (Master Answer)

Admin from revisewise, Noida
Class : Class 1
The correct answer is A.

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Jeronee from Christwood School, PERUMBAKKAM
Subject :NSO    Class : Class 3

The given diagram represents the water cycle. Select the INCORRECT option regarding the processes that are labelled as a, b and c.


A In process 'b', the water vapours that rises, cools down to form tiny drops of water which come together to form clouds.
B In process 'a', water from rivers, lakes and seas changes to water vapours due to the warmth of sunlight.
C In process 'c', clouds formed in process 'b' become full and fall back to Earth as rain.
D None of these

Ans 1: (Master Answer)

Admin from revisewise, Noida
Class : Class 1
The correct answer is D.

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ROHAN from ARMY PUBLIC SCHOOL, DANAPUR CANTT, PATNA-801503, PATNA
Subject :NSO    Class : Class 8

Ans 1:

prabhkhelSingh from Hra international school, Gurdaspur
Class : Class 6
correct option is A because sodium, being highly reactive,reacts violently with cold water while magnesium reacts only with boiling water.Less reactive metals like zinc and iron react with steam only.Noble metals like gold and silver do not react with water.

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