National Science Olympiad Forum By SOF Olympiad Trainer - Page 59
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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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Sindhura Dumbala Reddy from Global Indian International School, Hyderabad
Subject :NSO    Class : Class 4

Ans 1:

Arjun120914 from St. Andrews world school, Ghaziabad
Class : Class 5
D

Ans 2:

Pranay patel from DPS east, Bangalore
Class : Class 5

Ans 3:

Kanishk gupta from Prime academy, Pune
Class : Class 5

Ans 4:

Krishika Madan Shanmugam from National Public School, Bangalore
Class : Class 4
D

Ans 5:

Bhanu V from World One , Hyderabad
Class : Class 4
D

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adhiraj chaudhary from apeejay school noida, noida
Subject :NSO    Class : Class 4

Ans 1:

Bhanu V from World One , Hyderabad
Class : Class 4
C

Ans 2:

Sovan from Salt lake ca, Kolkata
Class : Class 4
OPTION c IS THE CORRECT ANSWER

Ans 3:

Ashwak from Cambridge, Jalandhar
Class : Class 9
C is the correct answer

Ans 4:

nikunj from aadharshila vidyapeeth, delhi
Class : Class 4
c

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Isra Fathima from sophia high school, Bengaluru
Subject :NSO    Class : Class 4

Ans 1:

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

Ans 2:

Avirath Rao from Manav Rachna International School , Gurgaon
Class : Class 5

Ans 3:

Aadya Kawale from Podar International ICSE , Dombivli East
Class : Class 4
D

Ans 4:

Rishabh Rathi from Blue Ridge Public School, Pune
Class : Class 5
a

Ans 5:

NAMISH AGRAWAL from KV calicut, calicut
Class : Class 4
why it is D

Ans 6:

harry potter from Hogwarts school of witchcraft and wizardry , london
Class : Class 5

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Prerona Chatterjee from Delhi Public School North Kolkata, Kolkata
Subject :NSO    Class : Class 4

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Akshaj C S from Sh thevara, thevara
Subject :NSO    Class : Class 4

Ans 1:

Prerona Chatterjee from Delhi Public School North Kolkata, Kolkata
Class : Class 5
C is the answer

Ans 2:

Prerona Chatterjee from Delhi Public School North Kolkata, Kolkata
Class : Class 5
C is the answer

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monisha garg from carmel convent school sector 9 chandigarh, panchkula
Subject :NSO    Class : Class 4

Ans 1:

Ashwak from Cambridge, Jalandhar
Class : Class 9
The correct answer is C

Ans 2:

Dishita Santosh Walujkar from Nutan English School, Kurduwadi
Class : Class 7
correct ans is C

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lavanya from bcm chd road, Ludhiana
Subject :NSO    Class : Class 4

Ans 1:

Vaishnavi Joshi from Dr Kalmadi Shamarao High School Primary Section , Pune
Class : Class 4
option A

Ans 2:

from , Allahabad
Class : Class 5
option a

Ans 3:

Ashmit Pal from Euro School Wakad, Pune
Class : Class 5

Ans 4:

from , Allahabad
Class : Class 5
option a

Ans 5:

Preesha Shrivastav from Suncity school, Gurgaon
Class : Class 4
Answer is A because frog undergoes metamorphosis which means change of form from young one to adult one.

Ans 6:

Amelia Kar Laha from KV IIT Powai, Mumbai
Class : Class 6
answer is option b ....

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Debarpan Das from Delhi Public School , Durgapur
Subject :NSO    Class : Class 4

Ans 1:

Dishita Santosh Walujkar from Nutan English School, Kurduwadi
Class : Class 7
right answer is C

Ans 2:

Vivaan A V from Loyola school, Jamshedpur
Class : Class 4
The right answer is "B" because not all containers (such as beaker and test tube) are waterproof. They may leave some remnants. So, they may leave a few ML of the liquid in them; and that is crucial. You cannot say that they have the same volume; even if they are a microliter lesser. It will reduce the volume more/less according to how much is left behind.

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Debarpan Das from Delhi Public School , Durgapur
Subject :NSO    Class : Class 4

Ans 1:

Divyamsh from The Sky World School, Panchkula
Class : Class 5
lizards are not amphibians

Ans 2:

Shruthi from VIBGYOR, Mumbai
Class : Class 6

Ans 3:

Krittika Patra from City pride School moshi, Pune
Class : Class 4
are lizards even amphibian ?

Ans 4:

Raavi Rakesh Chaudhari from A R Patel cbse school , Dhule
Class : Class 5
Where is a crocodile?

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