National Science Olympiad Forum By SOF Olympiad Trainer - Page 584
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Rudra Tripathi from DPS Noida, Noida
Subject :NSO    Class : Class 4

Ans 1:

Aaditya Saxena from Ryan International School Pune, Pune
Class : Class 6
Thank you Admin for explaining. It was helpful.

Ans 2:

RC from Vibgyor, Navi Mumbai
Class : Class 8

Ans 3:

Dristri from Carmel, Jorhat
Class : Class 4

Ans 4:

Ashwak from Cambridge, Jalandhar
Class : Class 9
D

Ans 5:

Dristri from Carmel, Jorhat
Class : Class 4

Ans 6:

Bk Tiwari from S.D.A, Surat
Class : Class 9
why d please explain

Ans 7: (Master Answer)

Admin from revisewise, Noida
Class : Class 1

The correct answer is D.

X is oesophagus with no change in amount of undigested food. Y is stomach and Z is small intestine with decreasing amount of undigested food and P is large intestine as no further digestion occurs here.


Ans 8:

Alisha from Delhi Public School , bopal, Ahemdabad
Class : Class 8
Explain how and why D?

Ans 9:

Aaryaman Pradhan from De paul School , Berhampur
Class : Class 5
d

Ans 10:

Aajani Datta from The Samhita Academy, Bangalore
Class : Class 5

Ans 11:

Saarang roy from Indian school ghubra, Muscat
Class : Class 6

Ans 12:

RC from Vibgyor, Navi Mumbai
Class : Class 8
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Ans 13:

Rithvik from BVM Global, Chennai
Class : Class 9

Ans 14:

NARAYANAN VENKITASUBRAMANI from THE PSBB MILLENNIUM SCHOOL, Coimbatore
Class : Class 8

Ans 15:

Harini from vibgyor high, bangalore
Class : Class 3
D

Ans 16:

Hansikaa from Jaigopal Garodia Rashtrothana Vidya Kendra, Bangalore
Class : Class 8

Ans 17:

Aditi Saha from Bishops KalyaniNagar, Pune
Class : Class 4

Ans 18:

Rishan Sandeep Gadhia from Orchids International, Mumbai
Class : Class 8
very intelligent question , and answers too

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Sriram from DPS Modern Indian school , Doha
Subject :NSO    Class : Class 9

Ans 1:

from dpsgv, ghaziabad
Class : Class 9
amount of water entering the cell is osmolarity

Ans 2:

aditya apurva from DAV public School, Duttnagar
Class : Class 9
the concentration of a solution expressed as the total number of solute particles per litre.

Ans 3:

shreya from bbps noida, Noida
Class : Class 9
what is osmolarity

Ans 4: (Master Answer)

Admin from revisewise, Noida
Class : Class 1

The answer is C

The rate of contraction increases as osmolarity decreases because amount of water entering X by osmosis increases. 


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Saloni Saini from JPHS, Jaipur
Subject :NSO    Class : Class 5

Ans 1:

Sneha Sarkar from South city international school, Kolkata
Class : Class 7

Ans 2:

Mohammad Shayaan Khan from BILLABONG, Bhopal
Class : Class 6
HELLO ANYONE who appeared for CLASS V - IGKO .. Can you please share the question paper for IGKO Class 5 conducted on 11th Sep and 25th Sep please please share on email ahkhan00@yahoo.com or whatsapp - 9713018111

Ans 3:

Siri g rao from nps, Whitefield , Bengaluru
Class : Class 8
1+1=2. 2+3=5. 5+5=10. 10+7=17. 17+9=26. 26+11=37. 37+13=50. 50+15=65. 65+17=82 82+19=101 1,3,5,7,9,11, and so on are added to get the next number in the pattern

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Dhruvan G from Indian School al Ghubra, Muscat
Subject :NSO    Class : Class 8

Ans 1:

TARUN from DAV, DHANBAD
Class : Class 8

Ans 2:

Jaanvi Harish Marda from Shraddha Olympiad school, Ichalkaranji
Class : Class 4

Ans 3: (Master Answer)

Admin from revisewise, Noida
Class : Class 1

The correct answer is B

Microorganisms are used for the large scale production of alcohol, wine and acetic acid. Yeasts are mainly used in the commercial production of wine, beer and other alcoholic drinks. The main yeast species used is Saccharomyces cerevisiae. The process of conversion of sugar into alcohol is known as fermentation. 


Ans 4:

TARUN from DAV, DHANBAD
Class : Class 8
Ans.- (B) X is Saccharomyces cerevisiae and is used to make wine. This process of conversion of sugar into alcohol in the absence of air(anaerobic respiration) is called Fermentation (Y)

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Dhruvan G from Indian School al Ghubra, Muscat
Subject :NSO    Class : Class 8

Ans 1: (Master Answer)

Admin from revisewise, Noida
Class : Class 1

The correct answer is A

When a disease causing microbe (such as virus) enters body, some white blood cells produce chemicals called antibodies that surround the invader microbe. Once the virus has been surrounded by antibodies the white blood cell eats it.


Ans 2:

Sahasra Shanker from KV IIT, Chennai
Class : Class 6
wow! they are so intelligent, I mean the white blood cells. could anyone please give a detailed explanation of this procedure of how it happens. thanks

Ans 3:

Ankit kumar Jha from Ryan International School , Ghaziabad
Class : Class 9
thank you

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Kishore from National public school, Namakkal
Subject :NSO    Class : Class 8

Post Your Answer

Shweta Garg from Vibgyor high, Vadodara
Subject :NSO    Class : Class 5

Ans 1:

SWAPNIL DATTA from JULIEN DAY SCHOOL KALYANI, KALYANI
Class : Class 10
Those are philosophical thoughts which we get in our brain. We are yet to confirm such theories.

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Shweta Garg from Vibgyor high, Vadodara
Subject :NSO    Class : Class 1

Ans 1: (Master Answer)

Admin from revisewise, Noida
Class : Class 1

Please mention your query


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Sowmya Chandrasekaran from DAV GIRLS SENIOR SECONDARY SCHOOL, Chennai
Subject :NSO    Class : Class 4

Ans 1:

Tanirika Bansal from DPS Faridabad, Faridabad
Class : Class 4
this question is very confusing between a and b pleeeeese master answer explain to us

Ans 2:

Bhavtosh Tripathi from Maneckji Cooper Education Trust School, Mumbai
Class : Class 9
b

Ans 3: (Master Answer)

Admin from revisewise, Noida
Class : Class 1

Ans 4:

Advika Narkar from The Shishukunj International School, Jhalaria Campus, Indore
Class : Class 8
Explain master answerExplain to all of us and meHow is the answerB B B B B B B

Ans 5:

Mehvish Khursheed from DPSGV, ghaziabad
Class : Class 5
both A and B correct. Because A cause air pollution ,not water pollution so even A is correct. SOF should do corrections in such questions.

Ans 6:

Rishan Sandeep Gadhia from Orchids International, Mumbai
Class : Class 8
b is the answer because using recycled water is a method of conserving water

Ans 7:

Tanirika Bansal from DPS Faridabad, Faridabad
Class : Class 4
how the answer to this is bbbbb it is very confusing between a and b

Ans 8:

Shuvangi Das from Vivekananda mission school, haldia
Class : Class 9
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Ans 9:

Advika Narkar from The Shishukunj International School, Jhalaria Campus, Indore
Class : Class 8
Two options are confusing A and BA will be air pollution not water pollution please EXPLAIN this master answer you have NEVER EXPLAINED it to me always saying the answer is A or the answer is B or answer is C or D. But why is the answer A B C 0r D you should explain if you don't want to explain don't explain and don't give the answer also Then i'll tell SOF that the master answer from noida is giving the answer to us but not the explanation and in science if we have got the wrong answer then we should also get the explanation of every answer or else how will we understand the answer? we will have a doubt then what will we do

Ans 10:

Abhinav Kulkarni from National Centre For Excellence, Bengaluru
Class : Class 4
the ans is B

Ans 11:

srijita sen from B.J.E.M school, Bhubaneswar
Class : Class 6
This question's answer is A, not B because, it pollutes the air but not the water.

Ans 12:

Mishika shah from little angels high school, gwalior
Class : Class 9

Ans 13:

ANAY GUPTA from CMS KANPUR ROAD LUCKNOW, LUCKNOW
Class : Class 8
you have given two options that are completely wrong so how can we decide which is correct or wrong

Ans 14:

Riddhima Pandey from Chinmaya Vidyalaya, Bokaro Steel City
Class : Class 3
When we pollute the air most likely acid rain will occur so option a is wrong and option b is correct

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Syon from Sentia The Global School, Hyderabad
Subject :NSO    Class : Class 4

Ans 1:

Sachin Handore from ,
Class : Class 1

Ans 2:

Priyanshi from Delhi Public School, Gurugram
Class : Class 4
C is the correct answer

Ans 3:

Sachin Handore from ,
Class : Class 1

Ans 4:

Shashank Reddy from Gyan Ganga International School, Pune
Class : Class 5
Ram and Achin made the correct statements. Divya made an incorrect statement as the antelope population will be much more than the lion population in order to support the energy needs of the lion population. Ritu also made an incorrect statement because without the grass population, both antelope population and lion population will be negatively affected as lion feeds on antelope and antelope feeds on grass.Ram and Achin made the correct statements. Divya made an incorrect statement as the antelope population will be much more than the lion population in order to support the energy needs of the lion population. Ritu also made an incorrect statement because without the grass population, both antelope population and lion population will be negatively affected as lion feeds on antelope and antelope feeds on grass.Ram and Achin made the correct statements. Divya made an incorrect statement as the antelope population will be much more than the lion population in order to support the energy needs of the lion population. Ritu also made an incorrect statement because without the grass population, both antelope population and lion population will be negatively affected as lion feeds on antelope and antelope feeds on grass.Ram and Achin made the correct statements. Divya made an incorrect statement as the antelope population will be much more than the lion population in order to support the energy needs of the lion population. Ritu also made an incorrect statement because without the grass population, both antelope population and lion population will be negatively affected as lion feeds on antelope and antelope feeds on grass.Ram and Achin made the correct statements. Divya made an incorrect statement as the antelope population will be much more than the lion population in order to support the energy needs of the lion population. Ritu also made an incorrect statement because without the grass population, both antelope population and lion population will be negatively affected as lion feeds on antelope and antelope feeds on grass.Ram and Achin made the correct statements. Divya made an incorrect statement as the antelope population will be much more than the lion population in order to support the energy needs of the lion population. Ritu also made an incorrect statement because without the grass population, both antelope population and lion population will be negatively affected as lion feeds on antelope and antelope feeds on grass.Ram and Achin made the correct statements. Divya made an incorrect statement as the antelope population will be much more than the lion population in order to support the energy needs of the lion population. Ritu also made an incorrect statement because without the grass population, both antelope population and lion population will be negatively affected as lion feeds on antelope and antelope feeds on grass.

Ans 5:

Suhana Kedia from Griffin's international school, Kharagpur
Class : Class 5
Ananjit Chander , there has to be MORE antelopes to support the energy needs of the lions !!!!!!

Ans 6:

RB from BHS, Kolkata
Class : Class 7
C

Ans 7:

Mihika Talukdar from GARDEN HIGH, KOLKATA
Class : Class 4

Ans 8:

Pragnay Priyadarshi from Quantum Leap School, HYDERABAD
Class : Class 7

Ans 9:

Anantjit Chander from Apeejay School, Sector 15, Faridabad
Class : Class 10
But why is the option (C)? It should be (B)

Ans 10:

Manan thorat from Podar powai, Mumbai
Class : Class 4
The answer is C Because ram and achin are correct.

Ans 11: (Master Answer)

Admin from revisewise, Noida
Class : Class 1

The correct answer is C.

Ram and Achin made the correct statements. Divya made an incorrect statement as the antelope population will be much more than the lion population in order to support the energy needs of the lion population. Ritu also made an incorrect statement because without the grass population, both antelope population and lion population will be negatively affected as lion feeds on antelope and antelope feeds on grass.


Ans 12:

Aaryaman Pradhan from De paul School , Berhampur
Class : Class 5
c

Ans 13:

Anika S Kumar from Alphabets International school , Chennai
Class : Class 7

Ans 14:

Aaditva from Vasant Valley School, New Delhi
Class : Class 8

Ans 15:

somesh from Centre point katol road, Nagpur
Class : Class 6
Ccccccçcccccccccccccccccccccccccccçcccćccccc ccccccc ccccccc ccc

Ans 16:

Utsavi Priya from DPS RUBY PARK, KOLKATA
Class : Class 8

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