National Science Olympiad Forum By SOF Olympiad Trainer - Page 584
  1. Home
  2. /  Forum

User Forum

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

Ans 1:

Rishit from Allen, Bangalore
Class : Class 8
it is one

Ans 2:

Venya from CHIREC International, Hyderabad
Class : Class 9

Ans 3:

ishaan parikh from ahmedabad international school, ahmedabad
Class : Class 8
Answer A will be correct if you take newtons third law of motion into consideration

Ans 4:

ishaan parikh from ahmedabad international school, ahmedabad
Class : Class 8

Ans 5:

Anoushka Anbu from Amara Jyoti Public School, Bengaluru
Class : Class 8

Ans 6: (Master Answer)

Admin from revisewise, Noida
Class : Class 1

The correct answer is A.

The buggy pulls the horse backward just as hard as the horse pulls the buggy forward. Both of them would not move forward if surface is frictionless. 


Ans 7:

TARUN from DAV, DHANBAD
Class : Class 8
Ans.- (A) The buggy pulls the horse as backward just as hard the horse pulls the buggy forward. According to the IIIrd law of NLM( Newton's Laws of Motion), the action and reaction force takes place in two different bodies, in different direction , but of the same magnitude.

Post Your Answer

Anshuman Mishra from kv no 3, Bhubaneswar
Subject :NSO    Class : Class 6

Ans 1:

SOUMYA SHAMBHAVI JHA from PODAR INTERNATIONAL SCHOOL, MUMBAI
Class : Class 6
In the given Venn diagram X, Y and Z represent vitamin D, vitamin E and vitamin K, respectively. Deficiency of vitamin A causes night blindness and deficiency of vitamin C causes scurvy. Pellagra is caused by deficiency of vitamin B3. Vitamin B is a group of several vitamins like B1, B2, B3, B6, B12 and folic acid and is known as vitamin B complex.

Ans 2:

Ishan Patil from D.A.V. B.O.R.L. Public School ,Bina, Bina
Class : Class 9

Ans 3:

PS Gour from Chirec international schoo The best 30 years and beyond, Hyderabad
Class : Class 7
EASY PEASY LEMON SQUEEZY!

Ans 4: (Master Answer)

Admin from revisewise, Noida
Class : Class 1

The correct answer is B.

In the given Venn diagram X, Y and Z represent vitamin D, vitamin E and vitamin K, respectively. Deficiency of vitamin A causes night blindness and deficiency of vitamin C causes scurvy. Pellagra is caused by deficiency of vitamin B3. Vitamin B is a group of several vitamins like B1, B2, B3, B6, B12 and folic acid and is known as vitamin B complex.


Ans 5:

Ishir Jha from Gyan Ganga Global Academy, Rosera
Class : Class 8

Ans 6:

Kashvi Rawat from Gear Innovative International School, Bengaluru
Class : Class 3
What about vitamin A which is also fat soluble and also stored in fat tissues. The answer should be 'D' because the group Y consists of both vitamin A and vitamin E

Ans 7:

Shivyanshi from Salwan Public School, Gurugram Haryana
Class : Class 9

Ans 8:

Kashvi Rawat from Gear Innovative International School, Bengaluru
Class : Class 3
What about vitamin A which is also fat soluble and also stored in

Ans 9:

Naman from Svm, Nalasopara
Class : Class 6

Ans 10:

Naman from Svm, Nalasopara
Class : Class 6

Ans 11:

Vedang Amonkar from Dr K B Hedgewar High School, Panaji
Class : Class 6
In the given Venn diagram X, Y and Z represent vitamin D, vitamin E and vitamin K, respectively. Deficiency of vitamin A causes night blindness and deficiency of vitamin C causes scurvy. Pellagra is caused by deficiency of vitamin B3. Vitamin B is a group of several vitamins like B1, B2, B3, B6, B12 and folic acid and is known as vitamin B complex.

Ans 12:

Neel bhalsod from Navrachana school sama, Vadodara
Class : Class 6
B

Post Your Answer

Rudra Tripathi from DPS Noida, Noida
Subject :NSO    Class : Class 4

Ans 1:

RC from Vibgyor, Navi Mumbai
Class : Class 8
lllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllll

Ans 2:

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

Ans 3:

Aditi Saha from Bishops KalyaniNagar, Pune
Class : Class 4

Ans 4:

Ashwak from Cambridge, Jalandhar
Class : Class 9
D

Ans 5:

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

Ans 6:

Harini from vibgyor high, bangalore
Class : Class 3
D

Ans 7:

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

Ans 8:

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

Ans 9:

RC from Vibgyor, Navi Mumbai
Class : Class 8

Ans 10:

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

Ans 11:

Rithvik from BVM Global, Chennai
Class : Class 9

Ans 12:

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

Ans 13:

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

Ans 14: (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 15:

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

Ans 16:

Dristri from Carmel, Jorhat
Class : Class 4

Ans 17:

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

Ans 18:

Dristri from Carmel, Jorhat
Class : Class 4

Post Your Answer

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

Ans 1:

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

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


Post Your Answer

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

Ans 1:

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

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:

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

Post Your Answer

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 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 2:

TARUN from DAV, DHANBAD
Class : Class 8

Ans 3:

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)

Ans 4:

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

Post Your Answer

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

Ans 1:

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 2:

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

Ans 3: (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.


Post Your Answer

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.

Post Your Answer

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


Post Your Answer