National Science Olympiad Forum By SOF Olympiad Trainer - Page 415
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Sindhura Dumbala Reddy from Global Indian International School, Hyderabad
Subject :NSO    Class : Class 4

Ans 1:

Pranay patel from DPS east, Bangalore
Class : Class 5

Ans 2:

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

Ans 3:

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

Ans 4:

Kanishk gupta from Prime academy, Mumbai
Class : Class 4

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PRANAV VELDURTI from meridian school madhapur, hyderabad
Subject :NSO    Class : Class 5

Ans 1:

Divij Chaudhry from Strawberry fields high school, Chandigarh
Class : Class 5

Ans 2:

akshaj das from NARAYANA E TECHNO kaggdaspura, Bengaluru
Class : Class 8
option c

Ans 3:

PRANAV VELDURTI from meridian school madhapur, hyderabad
Class : Class 9

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Archit Borkar from SSVM World School, Coimbatore
Subject :NSO    Class : Class 3

Ans 1:

Archit Borkar from SSVM World School, Coimbatore
Class : Class 8
answer is B

Ans 2:

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

Ans 3:

Divit khandelwal from DPS bopal Ahmedabad , AHMEDABAD
Class : Class 3
answer is bbbbbbbbbbbbbb

Ans 4:

Atri Pradhan from Oxebow English School, Gobardanga
Class : Class 3
b

Ans 5:

Sourish Mahakul from Delhi Public School Electronic City, Bengaluru
Class : Class 8

Ans 6:

SAMRIDDHA PANDA from ST. MONFORT'S SENIOR SECONDARY SCHOOL, BARUIPUR
Class : Class 7
B

Ans 7:

Shruti from ,
Class : Class 1
c

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

Ans 1:

Ashwak from Cambridge, Jalandhar
Class : Class 8
C is the correct answer

Ans 2:

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

Ans 3:

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

Ans 4:

nikunj from aadharshila vidyapeeth, delhi
Class : Class 4
c

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VAIBHAVH RAMESH from NARAYANA ETECHNO WHITEFIELD, BANGALORE
Subject :NSO    Class : Class 5

Astrodog went on an expedition to the Moon some years ago. The space dog died on the Moon and was left behind by the astronauts when they returned to Earth. The following year, another group of astronauts landed on the Moon and were surprised to find that Astrodog's body was not decomposed.
This is because decomposers cannot live on the Moon since the _______.

A Moon has no air and water
B Moon is not as hot as the Earth
C Moon is much smaller than Earth
D Moon's gravitational pull is weaker than the Earth's gravitational pull


Ans 1:

Ahaan Mittal from Primus Public School, Bengaluru
Class : Class 8

Ans 2:

Pratham Dave from GNS, Bangalore
Class : Class 7
A is the answer to this question

Ans 3:

akshaj das from NARAYANA E TECHNO kaggdaspura, Bengaluru
Class : Class 8
a

Ans 4:

Ruhaan Singh from Gopalan International School, Bangalore
Class : Class 5
A

Ans 5:

Hitanshi Behera from Loyola School , Bhubaneswar
Class : Class 4
dude who got this one wrong mam

Ans 6:

DHERA from SBC ACADEMY , Dindigul
Class : Class 7
A IS THE ANSWER

Ans 7:

Advait kaushik from Ryan international school, Gurugram
Class : Class 7
AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA

Ans 8:

Pratham Dave from GNS, Bangalore
Class : Class 7

Ans 9:

Shreya from Delhi Public School, Abohar
Class : Class 5
Option a is correct

Ans 10:

shambhavi sinha from seth anandram jaipuria school , ghaziabad
Class : Class 5
a

Ans 11:

A Venkata Sai Pranav from Podar International School, Bhusawal
Class : Class 9
Option C

Ans 12:

Ahaan Mittal from Primus Public School, Bengaluru
Class : Class 8
option a is right though india has found water on the moon. They cant decompose if they are dead anyways

Ans 13:

Advait kaushik from Ryan international school, Gurugram
Class : Class 7
AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA

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VAIBHAVH RAMESH from NARAYANA ETECHNO WHITEFIELD, BANGALORE
Subject :NSO    Class : Class 5

Ans 1:

Sohan R Jolapuri from Amanora School, Pune
Class : Class 5
Answer: The answer could be option B. Explanation: Assume the solar system as a circle, the sun as the radius( center) and the planets' orbits as the circumference( circle boundary). Mercury, with the least circumference length, revolves less distance than any other planet. This also means that it will take the least time to revolve around the Sun( 88 Earth Days ). Neptune, being the farthest of all planets, revolves more distance compared to others. Neptune takes the highest time to revolve( 165 Earth Years).[ Viewing the solar system Diagram would help.] Therefore, less the distance from the Sun, less the time taken to revolve; more the distance from the Sun, more the time taken to revolve.

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Kartikeya Singh from DPS Katra, Katra
Subject :NSO    Class : Class 3

When astronauts are out in the space, either they communicate using radios or talk to one another by touching their helmets. Which of the following statements holds true about communication in space?
1.Sound is a vibration that cannot travel through vacuum.
2.Sound vibrations can travel through the material of the helmet to the other.
3.Radiowaves can travel through vacuum.
4.Helmets have speakers built in them which produce sounds when touched.

A4 only
B2 and 3
C1, 2 and 3
D1 and 4


Ans 1:

Mohi from Vibgyor, Bangalore
Class : Class 6
C

Ans 2:

Kartikeya Singh from DPS Katra, Katra
Class : Class 5
ANS A is correct

Ans 3:

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

Ans 4:

Advika Narkar from The Shishukunj International School, Jhalaria Campus, Indore
Class : Class 7
i am confused

Ans 5:

SAMRIDDHA PANDA from ST. MONFORT'S SENIOR SECONDARY SCHOOL, BARUIPUR
Class : Class 7
D

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Nilanjana De from Delhi Public School North, Bengaluru
Subject :NSO    Class : Class 8

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ANUP from Bhavans Vidya Mandir Elamakkara, Kochi
Subject :NSO    Class : Class 6

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arya navare from Saint ursula school, kankavli
Subject :NSO    Class : Class 5

Nidhi pushed the plunger of syringe completely and dipped its needle in water. Then she slowly pulled the plunger while its needle was still immersed in water. Select the correct option regarding this.

A Water will move in the syringe when she pushed the plunger down due to air pressure.
B When she pushed the plunger down all the air moved out creating an empty space in syringe.
C Air outside the syringe exerted pressure on water causing it to move in when the plunger is pulled up.
D Both (B) and (C)


YEA IT IS C

Ans 1:

Pratham Dave from GNS, Bangalore
Class : Class 7
C is the answer to this question

Ans 2:

Soumyaraj Roy from Kendriya Vidyalaya , Thiruvananthapuram
Class : Class 7

Ans 3:

Biju Pappachan from Rkc , Raipur
Class : Class 1
Ans 3 is wrong the correct ans is D.

Ans 4:

Saipriya from Sankara, Chennai
Class : Class 8
pratham dave u r a fool it will be wrong worst science studier. Devina u r right my dear friend but just look at the sollution, and biju are u mad ans three did not even reply u mad u say she is wrong dont talk all this rubbish in chat

Ans 5:

Devina kashyap from TPS, Mumbai
Class : Class 4
well I have no idea if the answer D is correct or not but i think that answer C is not correct as how can you say that the syringe which is inside water will get the force of air

Ans 6:

Naresh Rathod from Al Muna Academy, Abu Dhbai
Class : Class 5
D is correct there is no space in the syringe when you push the plunger down

Ans 7:

Sanskriti Nagar from Rose Bud Academy, khagaria
Class : Class 5
D is the correct answer

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