National Science Olympiad Forum By SOF Olympiad Trainer - Page 790
  1. Home
  2. /  Forum

User Forum

Ask Your Question
from ,
Subject :NSO    Class : Class 7

Ans 1:

from ,
Class :
Options B and D are correct

Post Your Answer

Bhabani Prasad from Narayan School, Kolkata
Subject :NSO    Class : Class 5

Ans 1:

Saksham Chanani from Sri Sri Academy, Kolkata
Class : Class 9
it has hair like structure

Ans 2:

Nidhi Upadhyaya from S M shetty HIgh school, Mumbai
Class : Class 8

Ans 3:

NIVED PRAKASH NAIR from SARVODAYA, THIRUVANANTHAPURAM
Class : Class 8
The Xanthium IS dispersed by animals

Ans 4:

Soham Sharma from Kiit International School, Bhubaneswar
Class : Class 6
The correct answer should be B because it has a hairy structure and it can be dispersed by wind .nor its written that this is Xanthium

Ans 5:

krishneil from Elpro international school, Pune
Class : Class 6
The picture given did not look like xanthium neither dandelion ,so it looked like dandelion to me so I went with (B)Please give better images

Ans 6:

Saksham Chanani from Sri Sri Academy, Kolkata
Class : Class 9
Its B

Ans 7:

Vihaan Patil from Bombay Scottish School, Mahim Mumbai
Class : Class 6
the damn picture needs to be clear

Ans 8:

Aabhineet Patnaik from Lakshya International School, Kakinada
Class : Class 5
Correct answer is A !!! As it is having hair like structure so, it is carried by wind

Ans 9:

shaun joel dasari from subs, chennai
Class : Class 4
how is this possible

Ans 10:

from ,
Class :
The picture is not clear and it cannot be said that it is a xanthium neither can it be said it is a dandelion. I went with B. Please show better qualities pictures sof.

Ans 11:

Ashher Pervez from DPS Bhilai, Bhilai
Class : Class 10
You are correct ans. is B wind because it seems to be light in weight and also hairs that acts like feathers and also wind can carry only light weight seeds.

Ans 12:

Mannat Verma from Vivek High School , Chandigarh
Class : Class 6
It is Xanthium which is dispersed by animals.

Ans 13:

from ,
Class :
it is C as it is a Xanthium

Ans 14:

Anantjit Chander from Apeejay School, Sector 15, Faridabad
Class : Class 10
The correct option is (C) or (B)?

Ans 15:

Shubham Majhi from Sri Chaitanya Techno School, Bangalore
Class : Class 5

Ans 16:

Priyanshi Singh from Deens Academy Bangalore, Bangalore
Class : Class 5
The image looks nothing like cocklebur. It has to be a bit more clear,

Ans 17:

Ashwak from Cambridge, Jalandhar
Class : Class 9
Can't understand

Ans 18:

ARNAV GARG from PRUDENCE SCHOOL, New Delhi
Class : Class 10
D

Ans 19:

Ahaan Mittal from Primus Public School, Bengaluru
Class : Class 8
it is dandelion isn't it??? i think it is wind because hair and size

Ans 20:

shubhavi Dhondge from NPS, Banagalore
Class : Class 9
even I went with B

Ans 21:

ARUNAV from DPS VINDHYANAGAR, VINDHYANAGAR
Class : Class 10
I think that laksmi is saying correct because we cannot diffrentiate them as it is not clear that they are spines like in xanthium or feather like in dandelion

Post Your Answer

from ,
Subject :NSO    Class : Class 5

Ans 1:

suday ghai from DPS NOIDA, GAUTAM BUDDHA NAGAR
Class : Class 5
I HAD CONFUSION WITH A AND C

Ans 2:

sanjana from NARAYANA E TECHNO , Chennai
Class : Class 8
the answer is 2nd april 1984 i got confused

Ans 3:

from ,
Class :

Ans 4:

ARNAV GARG from PRUDENCE SCHOOL, New Delhi
Class : Class 10

Ans 5:

Mathamagician from BGSNPS, Bengaluru
Class : Class 6
No, it is actually none, it was on 2nd April 1984.

Ans 6:

Bhavya from ABC, Delhi
Class : Class 7
IT IS IN 1984 WHEN MY MOTHER WAS BORN.

Ans 7:

Anas Matin Barmare from DPS, Dubai
Class : Class 8
Hey, mathamagician. Uh it could also be April 3 since the dates might differ by a few days due to there being many sources.

Ans 8:

Bhavya from ABC, Delhi
Class : Class 7
IT IS JUST ON MY BIRTHDAY SO I REMEMBER IT. OPTION C IS THE ANSWER

Ans 9:

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

Ans 10:

Ashher Pervez from DPS Bhilai, Bhilai
Class : Class 10
Answer is A April 3, 1984

Ans 11:

ARNAV GARG from PRUDENCE SCHOOL, New Delhi
Class : Class 10

Ans 12:

Shreyansh Gupta from MVN, faridabad
Class : Class 7
ans is a April 3 1984 not ans c

Ans 13:

Anantjit Chander from Apeejay School, Sector 15, Faridabad
Class : Class 10
(A) is the correct answer

Post Your Answer

Adrita Bhattacharya from MERIDAN SCHOOL, KALYAN
Subject :NSO    Class : Class 3

Ans 1:

Navneeth Reejish from Yuvabharati International school, Singapore
Class : Class 7
(D) IS THE ANSWER

Ans 2:

Pratha Borar from Jayshree Periwal International School, Jaipur
Class : Class 5
(A) Nomads

Post Your Answer

Avaneesh Sai Vemparala from The knowledge habitat, Pune
Subject :NSO    Class : Class 6

Ans 1:

Preetham Sivalingam from Delhi Public School Bangalore East, Bengaluru
Class : Class 7
Option a is correct.

Ans 2:

Shreyasi Padihary from National Public School East , Bengaluru
Class : Class 7
In option A, sunflower and paddy should be interchanged as sunflower has taproot and paddy has fibrous root system. Option D is the correct answer as wheat, maize and paddy have fibrous roots and sunflower, carrot and radish have taproot

Ans 3:

from ,
Class :
OPTION A IS CORRECT NO CHANCE OF WRONG

Ans 4:

Kushal from Chirec, Hyderabad
Class : Class 7
the answer is d

Post Your Answer

from ,
Subject :NSO    Class : Class 5

Post Your Answer

Ashher Pervez from DPS Bhilai, Bhilai
Subject :NSO    Class : Class 5

Ans 1:

Ybbn from Alphabet International School, Chennai
Class : Class 4
I DON'T UNDERSTAND, CLARIFY MY DOUBT QUICKLY SIR OR MADAM

Ans 2:

D M Sarvesh from Narayana Group of Schools, Mogappair
Class : Class 4

Ans 3:

Mannan from Sherwood High, Bengaluru
Class : Class 7
Hey many people are thinking answer B is right .well, yeah according to me ans B is right .these SOF people really need to improve and update this app

Ans 4:

Taksh from Delhi Public School, Secunderabad
Class : Class 6
answer should be b right

Ans 5:

Ronav Kerkar from Jamnabai Narsee School, Mumbai
Class : Class 7
SHOULD BE B

Ans 6:

Prisha Shah from Euroschool Airoli, Mumbai
Class : Class 6
The correct ans is B

Ans 7:

Shivani Shivu Singh from Pawar Public School Chandivali , Mumbai
Class : Class 9
b

Ans 8:

Amaan Alam from JSS Private School , Dubai
Class : Class 5
B is the correct answer

Ans 9:

Shivani Shivu Singh from Pawar Public School Chandivali , Mumbai
Class : Class 9
b

Ans 10:

Rimi from TLISK, pune
Class : Class 9
B is the correct answer.

Ans 11:

Ridhan from SFS janakpuri, New Delhi
Class : Class 5
b answer, wrong question

Ans 12:

from ,
Class : Class 5
Answer is b

Ans 13:

Ybbn from Alphabet International School, Chennai
Class : Class 4
The answer is d because they ask which is " INCORRECT", AND OPTION B IS THE CORRECT OPTION, AND BOTH A AND C ARE INCORRECT. AS THEY HAVE ASKED INCORRECTLY, THE ANSWER IS D, AS BOTH A AND C ARE WRONG.

Ans 14:

ABCDE from admin, Noida
Class : Class 6
c is the correct answer

Ans 15:

Lakshana from SBOA School and Junior College, Chennai
Class : Class 6
D is only correct as in option B they have given that Z can be emu but emu has both wings and feathers and it is a flightless bird

Ans 16:

Deeptajit Roy from Gems Modern Academy, Dubai
Class : Class 10
Organism X is actually emu, because it has wings AND feathers. So correct answer is D.Answer B however is wrong, as it tells emus ONLY have feathers. Answer C is wrong as organism X can be any bird, even penguins. And answer A is also wrong as bats don't have feathers and ostriches have wings too.

Ans 17:

marika from VTS, Mumbai
Class : Class 4

Ans 18:

Aditya from Glendale Academy, Hyderabad
Class : Class 5
it is 'b'

Ans 19:

Taksh from Delhi Public School, Secunderabad
Class : Class 6
answer should be b

Ans 20: (Master Answer)

from ,
Class :

Ans 21:

from ,
Class :
you both are wrong.the correct answer is B

Ans 22:

Rimi from TLISK, pune
Class : Class 9
Mathamagician, we should not say anyone fool. Please keep in mind

Ans 23:

Syed Mohammad Hussain from ISAM, Muscat
Class : Class 8
d

Ans 24:

Saipriya from Sankara, Chennai
Class : Class 9
A is only correct

Ans 25:

Sharanya Saini from Frank Anthony Public school, New Delhi
Class : Class 5
the answer is option D

Ans 26:

Snigdha swaminath from Christ nagar higher secondary school , Trivandrum
Class : Class 7
A is correct

Ans 27:

from ,
Class :
The answer has to be b. Come on SOF.

Ans 28:

aatmaj sharma from HAPS HAMIRPUR HP, HAMIRPUR
Class : Class 9
according to me the correct answer is B

Ans 29:

Ayush Yadav from Salwan Public School, Gurgaon
Class : Class 6

Ans 30:

Aarnav from FIA, Nashik
Class : Class 6
According to me the answer is B.

Ans 31:

Riya Nambiar from The Sanskaar Valley School, Bhopal
Class : Class 10
Fe facts:1) Ostriches have wings, though it is not used for flying.2) Bats do not have feathers. They have hairs like other mammals.3) Emu has wings and again not used for flying.4) A penguin has feathers.5) Almost all birds have wings and feathers.So, option D is the only one that seems right.

Ans 32:

dhairya mittal from vidyashram international school jodhpur, Jodhpur
Class : Class 5
C IS CORRECT

Ans 33:

Hari Govind from Delhi Public School Chandigarh , Chandigarh
Class : Class 6
answer should be B

Ans 34:

madhav from null, null
Class : Class 5
it is written select the incorrect statement

Ans 35:

sauradeep from j v m Shyamali , ranchi
Class : Class 10
B

Ans 36:

Anika Saha from New Town School, KOLKATA
Class : Class 6
the answer is B

Ans 37:

Dhriti Das Purkayastha from Inventure Academy, Bangalore
Class : Class 7
the correct answer is D as in B there is no mention on what X is

Ans 38:

Shreejit Hadavale from Sanskriti School, Pune
Class : Class 5
Dd

Ans 39:

Aaditva from Vasant Valley School, New Delhi
Class : Class 5
B is the correct answer. According to me

Ans 40:

anirudh pratap singh parihar from RAMJAS SCHOOL ANAND PARVAT, DELHI
Class : Class 7
well we can say that ans d is correct because emu has both the features mentioned in the question while option b describes only one of them

Ans 41:

aatmaj sharma from HAPS HAMIRPUR HP, HAMIRPUR
Class : Class 9

Ans 42:

Anahita Baruah from DPS Bangalore East, Bengaluru
Class : Class 3
Bats have wings and no feathers. Ostriches and Emus have both feathers and wings, but they can’t fly mainly due to their huge size. Penguins have feathers and flippers (not wings). “A” is incorrect as bats doesn’t have feathers. “B” is incorrect as penguins doesn’t have wings. “C” is incorrect as there are birds that has both feathers and wings. “D” is the correct answer

Ans 43:

Mathamagician from BGSNPS, Bengaluru
Class : Class 6
I thought it was c), but it is d). People who think it is b), are all fools

Ans 44:

Shanaya Siddhartha from Bal Bharati Public School, Navi Mumbai
Class : Class 3
clearly answer B is correct

Ans 45:

from ,
Class :

Ans 46:

Mystic Girl from NPS, Bnagalore
Class : Class 6
The correct answer is D

Ans 47:

Satvik Agrawal from Delhi Public School, bhopal
Class : Class 5
if you have problem please report it

Ans 48:

Prath from Vibgor High, Bangalore
Class : Class 10
Even I think the correct answer is B

Ans 49:

from ,
Class :
you both are wrong.the correct answer is B

Ans 50:

from ,
Class :
But the correct answer according to SOF is option D

Ans 51:

Anaisha from Hsss, Chennai Dr
Class : Class 5
B is correct

Ans 52:

Satvik Agrawal from Delhi Public School, bhopal
Class : Class 5
where is the solution

Ans 53:

Ishaan Ahuja from TSMS, Noida
Class : Class 6
the ans is *BBBBBBBBBBBBBBB*

Ans 54:

Ayush Yadav from Salwan Public School, Gurgaon
Class : Class 6
Answer D is correct

Ans 55:

from ,
Class :
I think my answer is right

Post Your Answer

from ,
Subject :NSO    Class : Class 9

Ans 1:

from ,
Class :
We fry stuff in oil because oil has much higher boiling point in comparison to water. So after heating when oil reaches temperatures greater than the boiling point of water (100 C) it instantly vaporize the water present in food into steam. ... Oil fries it and gives a crispy texture.

Ans 2:

from ,
Class :
oil has a low boiling point than water. Therefore we use oil to make the cooking process faster and easier

Ans 3:

from ,
Class :
oil has a low boiling point than water. Therefore we use oil to make the cooking process faster and easier

Post Your Answer

Vihaa Sharma from Global Indian International School Tokyo, Tokyo
Subject :NSO    Class : Class 4

Ans 1: (Master Answer)

from ,
Class :
The correct answer is C.

Post Your Answer

from ,
Subject :NSO    Class : Class 2

Ans 1:

Kitika Kothari from Ramniwas Bajaj High School, Mumbai
Class : Class 4
The answer is D as the pictures given have different hazards.

Ans 2:

Manit Aggarwal from St. Patricks Academy Bengaluru, Bangalore
Class : Class 8
a is the answer

Ans 3:

muskan kapoor from muskan kapoor, Amritsar
Class : Class 8

Ans 4:

Arnav Basu from faps, Bengaluru
Class : Class 6
a is theaa is the answer.

Post Your Answer