National Science Olympiad Forum By SOF Olympiad Trainer - Page 497
  1. Home
  2. /  Forum

User Forum

Ask Your Question
vivaan sethi from GD goenka public school, Delhi
Subject :NSO    Class : Class 3

Ans 1:

Kashika Goel from DPS Noida, Noida
Class : Class 6
no 9

Ans 2:

Parashuram from Vibgyor, BANGALORE
Class : Class 3
Study the given food web and select the correct option for the following questions. How many food chains are there in the food web? A 9 B 11 C 13 D 16ans is c

Ans 3:

Mahi from BIS , delhi
Class : Class 5
ans 9

Ans 4:

Tejaojas Abhilash from Naipunya Public School , Kochi, Kochi
Class : Class 7
11 is correct acd acdi acde acdef acdefg acdeg hcdef hcde hcdeg hcd hbg

Ans 5:

Rishik De Sarkar from Delhi Public School Gurgaon, Gurgaon
Class : Class 7
11

Ans 6:

Vidhaan Srivastava from Apeejay, NEW DELHI
Class : Class 6

Ans 7:

Soumyajit Das from Hariyana Vidya Mandir, NORTH 24 PARGANAS
Class : Class 6
I think there are 9 food chains at all. Please check the diagram of the food web.

Ans 8:

AARAVPRADEEP SAHU from PADMASESHADRI BALBHAVAN SENIOR SECONDARY SCHOOL, CHENNAI
Class : Class 3

Post Your Answer

Vishal B from National Public School, Chennai
Subject :NSO    Class : Class 6

Which of the following statements is incorrect about the asteroids?

AThey are planet like objects, but smaller and often irregularly shaped.
BMajority of asteroids orbit in the asteroid belt between the orbits of Mars and Jupiter.
CAsteroids mainly composed of mineral and rock.
DVesta is the largest and most massive asteroid discovered.


from https://en.wikipedia.org/wiki/4_Vesta: Vesta (minor-planet designation: 4 Vesta) is one of the largest objects in the asteroid belt, with a mean diameter of 525 kilometres (326 mi).I think some error with question

Post Your Answer

Hprakash09 from Billabong high Bhopal, Bhopal
Subject :NSO    Class : Class 6

Ans 1:

Nivedhini from Vivekanada Vidyalaya Chitlapakkam, Chennai
Class : Class 9
the answer is D

Ans 2:

rethish from Veltech, Avadi
Class : Class 3
Cobalt, Nickel, and Steel are magnetic materials. But Stainless Steel is non-magnetic. There are several different types of stainless steel. The two main types are austenitic and ferritic. Ferritic stainless steels are generally magnetic, while austenitic stainless steels usually are not. Austenitic stainless steel is stainless steel added with nickel. so, the correct answer is Option D.

Ans 3:

Sucheta from Podar, Pune
Class : Class 8

Post Your Answer

Ishanvi B Nair from DPS Noida, Noida
Subject :NSO    Class : Class 1

Ans 1:

Arin Puri from Delhi Public School Noida, Nodia
Class : Class 2
answer should be B . Plant cannot die in absence of 1 food

Post Your Answer

Bhavit Bansal from Vardhman International School, Jaipur
Subject :NSO    Class : Class 5

Ans 1:

Tasneem from FAIPS, kuwait
Class : Class 6
a

Ans 2:

tanmay chaudhry from BAL BHAVAN PUBLIC SCHOOL, New Delhi
Class : Class 4
aswer a jojojojojojojojojojojooojojjjjjojjojjjojoojjjooooojjjjjjjoooojjojojojojojojoo

Ans 3:

Inamul from Springs, Nilambur
Class : Class 8

Ans 4:

Shweta Garg from Vibgyor high, Vadodara
Class : Class 8
Metal P expands less then Q and metal Q expands less than R. So, metal P expands less than R. If a bimetallic strip is heated it bends with metal which expands more on the outside and the metal which expands less in the inside. So the strip should bend downwards to complete the circuit for the bell to ring.Answer- A.

Ans 5:

Tasneem from FAIPS, kuwait
Class : Class 6
a

Ans 6:

Debarpan Das from Delhi Public School , Durgapur
Class : Class 9

Post Your Answer

Hamsavarshini Swaminathan from St Anns Senior Secondary School, Roorkee
Subject :NSO    Class : Class 6

Read the following passage carefully. P is found abundantly in cod liver oil and is important for visual efficiency. Q is sourced from amla, tomato and citrus fruits and its deficiency may cause wounds to take longer time for healing. R is formed in our body in presence of sunlight and its deficiency in toddlers may cause deformity of legs.Now select the incorrect option regarding this.

AP can be found in spinach but not R.
BIn absence of R our body will show calcium deficiency even if it is abundant in our food.
CQ is also called B-complex as many of its varieties are available.
D P cannot be dissolved in water.


Ans 1:

Shayan Bari from Kendriya Vidyalaya, Katihar
Class : Class 7
Q is vitamin C ,not B.

Ans 2:

MInnal Senthil from Prakriya, Bangalore
Class : Class 5
yes.citrus fruit is vitamin c

Post Your Answer

Brinda Chakraverty from DPS Noida, Noida
Subject :NSO    Class : Class 5

Three different species of plants were selected by scientists who wanted to document their methods of seed dispersal. The graphs below show the approximate number of seedlings found at various radii around the parent plant.

What are the correct methods of seed dispersal of each plant?

Species 1 Species 2 Species 3
A Water Explosion Animal
B Wind Animal Water
C Wind Animal Explosion
D Explosion Water Animal


A very tough question

Ans 1:

Ashwak from Cambridge, Jalandhar
Class : Class 8
C

Ans 2:

Navyaa Kalra from DPS Noida, NOIDA
Class : Class 5
ANS IS C!!!!!!!!!!!!!!!!!!!!!

Ans 3:

RISHABH from BHARATIYTA VIDYA BHAVAN, KOLKATA
Class : Class 9
thanks

Ans 4:

Soumyaraj Roy from Kendriya Vidyalaya , Thiruvananthapuram
Class : Class 7

Ans 5:

Piyush Kumar Pruseth from Sri Aurobindo Integral Education and Research Centre, Rajgangpur
Class : Class 5
Answer is C

Ans 6:

Ayush Banerjee from DAV Pune, Pune
Class : Class 3
C) Seeds which are dispersed by wind are usually carried to far off places due to their small size and light weight, e.g. , seeds of cotton and dandelion. similarly, seeds dispersed by water are also light and can easily float and carried to far off places by water, e.g. , seeds of coconut. dispersed by animals seeds of guava can be carried by human beings and animals to nearer as well as long distance from the parent plant. Explosive action of some seeds peas and balsam scatter away from the parent plant but it usually cannot enable the seeds to be dispersed far off places.

Ans 7:

Sumit Biswal from Dps gandhinagar, Gandhinagar
Class : Class 7

Ans 8:

Ayush Banerjee from DAV Pune, Pune
Class : Class 3
C) Seeds which are dispersed by wind are usually carried to far off places due to their small size and light weight, e.g. , seeds of cotton and dandelion. similarly, seeds dispersed by water are also light and can easily float and carried to far off places by water, e.g. , seeds of coconut. dispersed by animals seeds of guava can be carried by human beings and animals to nearer as well as long distance from the parent plant. Explosive action of some seeds peas and balsam scatter away from the parent plant but it usually cannot enable the seeds to be dispersed far off places.

Post Your Answer

Manvi Mundepi from Montfort School Roorkee, Roorkee
Subject :NSO    Class : Class 6

Ans 1:

Nivedhini from Vivekanada Vidyalaya Chitlapakkam, Chennai
Class : Class 9
Hi!! I am nivedhini you are answered my question please see that again

Ans 2:

Manvi Mundepi from Montfort School Roorkee, Roorkee
Class : Class 9
what do you want to say Nivedhini i'm not able to understand you,there are much gramatical mistakes

Post Your Answer

Hamsavarshini Swaminathan from St Anns Senior Secondary School, Roorkee
Subject :NSO    Class : Class 6

Post Your Answer

Divyansh Pradhan from Modern Vidya Niketan, Faridabad
Subject :NSO    Class : Class 2

We should not skip 'X' meal because body requires it the most after hours of gap between meals. What is 'X'?

A Evening snacks
B Dinner
C Lunch
D Breakfast


Yuohjhjhgghj🍠🍠🍖🍤🍤🍤🍕🍲🎂🍙🍙🍥🍝🍳🌤🌧🌧💥🌚🌗🌔🌘🌚🌑🌝🌒🌛🌒🌜🌓🌕🌖🕸🇹🇿🇹🇿🇹🇿🇹🇿🇹🇿

Ans 1:

kushagra chaturvedi from Podar Internation School Chinchwad, Pune
Class : Class 5

Ans 2:

Jancy from Podar, Bangalore
Class : Class 5
Dinner

Post Your Answer