National Science Olympiad Forum By SOF Olympiad Trainer - Page 727
  1. Home
  2. /  Forum

User Forum

Ask Your Question
Neevedita Singh from Auxilium Convent School Dum Dum, Kolkata
Subject :NSO    Class : Class 7

Ans 1:

Neevedita Singh from Auxilium Convent School Dum Dum, Kolkata
Class : Class 7
I got the answer ........Its option (C) SPLEEN

Post Your Answer

Manit Aggarwal from St. Patricks Academy Bengaluru, Bangalore
Subject :NSO    Class : Class 1

Ans 1:

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

Post Your Answer

Khwahish Sharma from Oakfield Public School , Jaipur
Subject :NSO    Class : Class 7

Ans 1:

Krishna Kabra from Magarpatta City Public School, Pune
Class : Class 8
Options B and D are correct

Post Your Answer

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

Ans 1:

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

Ans 2:

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

Ans 3:

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

Ans 4:

Sai Lakshmi Rao from Maneckji Cooper Education Trust, Mumbai
Class : Class 4
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 5:

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 6:

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

Ans 7:

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 8:

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 9:

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

Ans 10:

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

Ans 11:

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

Ans 12:

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

Ans 13:

Shreetej from Pearson public school, Pune
Class : Class 5
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:

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 16:

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

Ans 17:

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 18:

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

Ans 19:

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

Ans 20:

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

Ans 21:

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

Post Your Answer

yash kirpalani from st gregorios high school chembur, Mumbai
Subject :NSO    Class : Class 5

Ans 1:

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

Ans 2:

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

Ans 3:

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

Ans 4:

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

Ans 5:

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

Ans 6:

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 7:

Yashasvika from Euro World School, Sri Ganganagar
Class : Class 5

Ans 8:

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

Ans 9:

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

Ans 10:

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

Ans 11:

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

Ans 12:

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

Ans 13:

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

Aditya Sai Vemparala from Amanora school, Pune
Subject :NSO    Class : Class 6

Ans 1:

Shreyasi Padihary from The Cambridge International School , Bangalore
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 2:

Tanishkchamp from Saint Francis English medium school, Bandikui
Class : Class 8
OPTION A IS CORRECT NO CHANCE OF WRONG

Ans 3:

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

Ans 4:

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

Post Your Answer

Murukesh from KV Jipmer Campus Shift 2, Pondicherry
Subject :NSO    Class : Class 5

Post Your Answer

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

Ans 1:

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

Ans 2:

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

Ans 3:

Ybbn from Alphabet International School, Chennai
Class : Class 5
I DON'T UNDERSTAND, CLARIFY MY DOUBT QUICKLY SIR OR MADAM

Ans 4:

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

Ans 5:

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

Ans 6:

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

Ans 7:

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

Ans 8:

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

Ans 9:

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

Ans 10:

Aaditva from Vasant Valley School, New Delhi
Class : Class 8
B is the correct answer. According to me

Ans 11:

Adarsh Kamath from DPS Whitefield, Bangalore
Class : Class 6
you both are wrong.the correct answer is B

Ans 12: (Master Answer)

Admin from revisewise, Noida
Class : Class 1

Ans 13:

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

Ans 14:

Niveideeta Cour from Suncity World School, Gurgaon
Class : Class 5
But the correct answer according to SOF is option D

Ans 15:

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 16:

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

Ans 17:

Sai Lakshmi Rao from Maneckji Cooper Education Trust, Mumbai
Class : Class 4
The answer has to be b. Come on SOF.

Ans 18:

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 19:

Adarsh Kamath from DPS Whitefield, Bangalore
Class : Class 6
you both are wrong.the correct answer is B

Ans 20:

ABCDE from admin, Noida
Class : Class 4
c is the correct answer

Ans 21:

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 22:

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

Ans 23:

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

Ans 24:

from ,
Class : Class 5
Answer is b

Ans 25:

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

Ans 26:

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 27:

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

Ans 28:

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

Ans 29:

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 30:

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 31:

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

Ans 32:

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 33:

Shivani Shivu Singh from Pawar Public School Chandivili , Mumbai
Class : Class 8
b

Ans 34:

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

Ans 35:

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

Ans 36:

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 37:

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

Ans 38:

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

Ans 39:

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

Ans 40:

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

Ans 41:

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

Ans 42:

MAHARU KAWATO from GLOBAL INDIAN INTERNATIONAL SCHOOL, TOKYO
Class : Class 5
I think my answer is right

Ans 43:

Shivani Shivu Singh from Pawar Public School Chandivili , Mumbai
Class : Class 8
b

Ans 44:

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

Ans 45:

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

Ans 46:

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

Ans 47:

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

Ans 48:

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

Ans 49:

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

Ans 50:

Anil sinha from DPS, Chandigarh
Class : Class 4

Ans 51:

Ybbn from Alphabet International School, Chennai
Class : Class 5
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 52:

marika from VTS, Mumbai
Class : Class 4

Ans 53:

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

Ans 54:

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

Ans 55:

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

Post Your Answer

PRIYANSH PAL from GRM, BAREILLY
Subject :NSO    Class : Class 9

Ans 1:

Aditya Prasad from Notre Dame , Gumla
Class : Class 9
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:

pm from amity , noida
Class : Class 9
oil has a low boiling point than water. Therefore we use oil to make the cooking process faster and easier

Ans 3:

pm from amity , noida
Class : Class 9
oil has a low boiling point than water. Therefore we use oil to make the cooking process faster and easier

Post Your Answer