National Science Olympiad Forum By SOF Olympiad Trainer - Page 573
  1. Home
  2. /  Forum

User Forum

Ask Your Question
yajur from dps vk, delhi
Subject :NSO    Class : Class 4

Ans 1:

Sahanaa from Sancta Maria International School, Hyderabad
Class : Class 8
How are we supposed to know it’s a rectangle when hidden by the circle ,bonne nuit

Ans 2:

Aalia Nair from Bombay Scottish School Mahim, Mumbai
Class : Class 4
4 IS THE CORRECT ANSWER

Ans 3:

MIERA SHARMA from DPS AGRA, AGRA
Class : Class 8
IT SHOULD BE 5 AS THERE IS SQUARE TRIANGLE SEMECIRCLE RECTANGLE AND DIAMOND

Ans 4:

Shaurya Shrivastava from Amanora school, Pune
Class : Class 6
all listen it should be 5 as i think because the rectangle is dividing the circle into two halves which is forminig a semi circle and if sof has to 4 which means that it should be a whole shape like circle triangle etc.so if it is wholes shape SOF is right or elseNiteen Jit Sahu and all others who say semi circle are right

Ans 5:

ayurda prasad from Delhi Public School, Faridabad
Class : Class 3
ayurda 4 d 4

Ans 6:

ishit from EUROSCHOOL THANE, THANE WEST
Class : Class 7
Can you tell the answer of this question

Ans 7:

Mayukh chatterjee from Somerville School Noida, Noida
Class : Class 5
why semicircle not be counted

Ans 8:

Aarav sugla from Niraj International School , Secunderabad
Class : Class 5

Ans 9:

Mohhika Sharma from Delhi Public School Greater Noida, Greater Noida
Class : Class 7
There is no semicircle.Answer is 4.

Ans 10:

Avya Pandey from NPS International, Singapore
Class : Class 8
b as there is a semi-circle

Ans 11:

Ashwak from Cambridge, Jalandhar
Class : Class 9
The answer is D) 4

Ans 12:

Abhinav Kulkarni from National Centre For Excellence, Bengaluru
Class : Class 4
55555555555555555555555555555555555555555 is the ans

Ans 13:

Advika Narkar from The Shishukunj International School, Jhalaria Campus, Indore
Class : Class 8
How 5? answer is 4The shapes are:circle,triangle,rectangle and square

Ans 14:

Advika Narkar from The Shishukunj International School, Jhalaria Campus, Indore
Class : Class 8
semicircle is there but made by square so the answer is 4

Ans 15:

PARTH PANCHAL from NEW HORIZON SCHOLARS SCHOOL, THANE
Class : Class 7
the answer can even be 'B' as semi-circle is there ,made by square

Ans 16:

Shaurya Shrivastava from Amanora school, Pune
Class : Class 6

Ans 17:

Gunnit Kant from DPS, Nerul, Navi Mumbai
Class : Class 5
its d

Ans 18:

Daksh Chanani from Sri Sri academy, Kolkata
Class : Class 7
SEMICIRCLE5B

Ans 19:

Atharva Batra from Modern Delhi Public School, Faridabad
Class : Class 4
5

Ans 20:

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

Ans 21:

Niteen Jit Sahu from Diya Academy of Learning, Bengaluru
Class : Class 7
5 is the answer because there is even semi circle there with rectangle,square and triangle.

Post Your Answer

Rehan Agrawal from Indian School Ghubra, Muscat
Subject :NSO    Class : Class 8

Ans 1:

PARTH JAIN from DPS INDIRAPURAM, GHAZIABAD
Class : Class 8

Ans 2:

vedant from st john senior secondry school, greater noida west
Class : Class 7
Answer is d

Ans 3:

ARUNAV from DPS VINDHYANAGAR, VINDHYANAGAR
Class : Class 10
see guys, i think u all are mistaken. We dont consider in what direction the car is going, but in which direction the wheel is turning. for the car to go forwards, the wheel must roll clockwise. so for the car to go east, wheel must roll in the clockwise direction. Now consider a very small part of the wheel which is touching the ground. to wheel to roll in clockwise direction , that small part must slide backward, and that must continously happen in order for wheel to turn clockwise and car to go in east direction. And u know, friction is b/w the surface in contact, i.e the rolling part of the wheel, not with the car. so friction should oppose the backward-going part of the wheel, and thus in the ame direction with the motion of the car. if friction were to be in west, the car would never go in east direction, because the wheel would'nt have any force to oppose, to make it go in that direction, and thus the car would never be able to go towards the east direction!

Ans 4:

Chatresh ramasai gudi from Bgsnps , Bangalore
Class : Class 8
The answer should be D

Ans 5:

Anirudh from 989820Delhi Pubic school Rohini , Delhi
Class : Class 8
D

Ans 6:

Palchin from Naval public school, Uran
Class : Class 8
the answer has to be d because friction always oppose the relative motion of an object no matter if it accelerates or not.

Ans 7:

Bipasana from KV IIT Kanpur, Kanpur
Class : Class 9
The answer is A.

Ans 8:

Aadvik saini from Mvn sector 17, Faridabad
Class : Class 8
the answer is D but is given wrong in this question .

Ans 9:

Spandan Trivedi from D.A.V. International School, Ahmedabad
Class : Class 8
Yes answer is D

Ans 10:

Antarik Maity from Bharatiya Vidyabhaban, Kolkata
Class : Class 8
How can the direction of friction be towards east? It should always act in the direction opposite to that of the direction of the moving body, i.e., friction should act towards the west irrespective of whether the vehicle is accelerating or retarding. So the correct answer should be D!

Ans 11:

Mridul Jain from Shishukunj International School Indore, Indore
Class : Class 9
I'm confused about the same thing...friction opposes relative motion, so it will obviously be towards west??

Ans 12:

Aanya from DAV, Gurgaon
Class : Class 8
I think that option "D" is the correct answer as friction is always opposite to direction of motion of the object

Ans 13:

Vayun from NPS HSR, Bengaluru
Class : Class 8
Answer is D

Ans 14:

Ankit kumar Jha from Ryan International School , Ghaziabad
Class : Class 9
I ALSO THINK THE ANSWER IS D

Ans 15:

Arnav Gangwar from DPS NOIDA, GAUTAM BUDH NAGAR
Class : Class 8

Ans 16:

Rishi Gopi from Loyola, Trivandrum
Class : Class 9
The correct answer is d as friction acts opposite to the direction of the applied force

Ans 17:

Rishi Gopi from Loyola, Trivandrum
Class : Class 9

Ans 18:

Rehan Agrawal from Indian School Ghubra, Muscat
Class : Class 10

Post Your Answer

Swarnava Pal from Vivekananda Mission School, Haldia
Subject :NSO    Class : Class 4

Ans 1:

Aaryaman Pradhan from De paul School , Berhampur
Class : Class 5
25341

Ans 2:

Khanak Jha from Prime Academy, Mumbai
Class : Class 4
it is wrong

Ans 3:

Shaurya from Modern Public School, Bhiwadi
Class : Class 7
C

Ans 4:

Aaryaman Pradhan from De paul School , Berhampur
Class : Class 5
25341

Ans 5:

Shaurya from Modern Public School, Bhiwadi
Class : Class 7
C because 25341 spells stick

Ans 6:

Dakala Murari from Indian school of excellence, Bangalore
Class : Class 4
c

Post Your Answer

Ajoy Bhuyan from Delhi public school, Bongaigaon
Subject :NSO    Class : Class 4

Ans 1:

Bharat Aggarwal from Kalyani school, Pune1
Class : Class 4

Ans 2:

Ajoy Bhuyan from Delhi public school, Bongaigaon
Class : Class 4

Ans 3:

Bharat Aggarwal from Kalyani school, Pune1
Class : Class 4
B is the answer

Ans 4:

Divyanshi from The Heritage school, Kolkata
Class : Class 4
D is the right ansExplanation- LOW VITAMIN A - NIGHT BLINDNESSLOW V. B - BERI BERI

Ans 5:

Rahul from Cambridge school, noida
Class : Class 4
Explain PleaseI need the explaination

Ans 6:

ANAY GUPTA from CMS KANPUR ROAD LUCKNOW, LUCKNOW
Class : Class 8
d is the right answer

Ans 7:

anu from Haralur, Bengaluru
Class : Class 5

Ans 8:

anu from Haralur, Bengaluru
Class : Class 5

Ans 9:

Aayush Shere from City Pride School, Ravet, Pune
Class : Class 4
CAN SOMEONE EXPAIN?

Ans 10:

anu from Haralur, Bengaluru
Class : Class 5
what they've went and done is put exxxtra optionsss! Real irratating

Ans 11:

Ashwak from Cambridge, Jalandhar
Class : Class 9
D

Ans 12:

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

Ans 13:

Ibrahim Aslam from uttam, Ghaziabad
Class : Class 5
DDD

Ans 14: (Master Answer)

Admin from revisewise, Noida
Class : Class 1

Ans 15:

Shiven Dinkar from DPS Noida, Delhi
Class : Class 4

Ans 16:

Krishiv Chandan Sukul from Seven 11 Scholastic School, Mumbai
Class : Class 6
YOU! An admin from Revisewise, you don't even own up to SOF's mistake.Da questions do not show properly and you think I'm responsible!

Ans 17:

Adway Bachchan from Indian School Sohar, Sohar
Class : Class 8

Ans 18:

Samarth Vijay Yeliathaya from Shri Kumarans Children home,cbse, Bangalore
Class : Class 5
d

Ans 19:

Gurnoor from Chitkara International School, Chandigarh
Class : Class 4
ans was b and i wrote b

Post Your Answer

Sutirth Badu from Sherwood High, Bengaluru
Subject :NSO    Class : Class 4

Ans 1:

vineet8026@gmail.com from dps, Doha
Class : Class 1
A

Ans 2:

Ronav Kerkar from Jamnabai Narsee School, Mumbai
Class : Class 7

Ans 3:

Shrihan Koley from Radiant International School , Patna
Class : Class 5
My head is not working and you all are crowding at a simple question! The answer of this question is always bbbbbbbbbbbbbbbbbbbbbb. Are you all are a small kindergarten kids? I think yes. You all are a kids . I think you all will in class 9 or 10. I am sure.

Ans 4:

Aaditva from Vasant Valley School, New Delhi
Class : Class 8
How a Vineet?

Ans 5:

Kairav Gupta from Bombay Scottish School, Mahim, Mumbai
Class : Class 4
The answer should be option C

Ans 6:

Shrihan Koley from Radiant International School , Patna
Class : Class 5
Seen you all later.

Ans 7:

Kairav Gupta from Bombay Scottish School, Mahim, Mumbai
Class : Class 4
Answer has to be option B

Ans 8:

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

Ans 9:

Ankush Dey from Sri Chaitanya Techno School Newtown, Kolkata
Class : Class 6
SOF Trainer Is Saying Option D But I Think It Is Option C

Ans 10:

k tagore from montessori school, KURNOOL
Class : Class 3

Ans 11:

Shamit Vashishth from Lucknow Public School, Lucknow
Class : Class 4
I think it is c.

Ans 12:

ishi gupta from DPS NOIDA, NOIDA
Class : Class 4

Ans 13:

Ronav Kerkar from Jamnabai Narsee School, Mumbai
Class : Class 7
d

Ans 14:

VAIBHAV DINESH from Christ Nagar HSS, TRIVANDRUM
Class : Class 4

Ans 15:

Syon from Sentia The Global School, Hyderabad
Class : Class 8

Ans 16:

Ayushi from DPS Noida, Noida
Class : Class 4
ans b is the answer......

Ans 17:

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

Ans 18:

BV Karthikeya from Sentia, Hyderabad
Class : Class 6

Ans 19:

shivansh from apeejay school, noida
Class : Class 5
It's answer should be B option

Ans 20:

Koyel Biswas from Adamas World School, Kolkata
Class : Class 5
option b

Ans 21:

EKLAVYA GONDULE from DPS BHILAI, Bhilai
Class : Class 7

Ans 22:

Rahul from Cambridge school, noida
Class : Class 4
Olympiad trainer is saying wrong it would be B bcoz it is 18....

Post Your Answer

Dibyanshu Lahiri from Mont Fort Sr Sec School, Roorkee
Subject :NSO    Class : Class 8

Ans 1:

PARTH JAIN from DPS INDIRAPURAM, GHAZIABAD
Class : Class 8

Ans 2:

from , Hajipur
Class : Class 8
a is answer

Post Your Answer

Dibyanshu Lahiri from Mont Fort Sr Sec School, Roorkee
Subject :NSO    Class : Class 8

Post Your Answer

Ashwin Shridhar from Vidyashilp Academy, Bangalore
Subject :NSO    Class : Class 7

Ans 1:

Midhuna from ABCD, Banglore
Class : Class 3
I have one thing to say the answer is C

Ans 2:

Nandu from The Asian School, Bahrain
Class : Class 3
ANS MUST BE Opt C

Ans 3:

Aadvik saini from Mvn sector 17, Faridabad
Class : Class 8
I think the answer should be c .

Ans 4:

Shreya Sudarshan from RVK - Banashankari, Bengaluru
Class : Class 7
would'nt the answer be c ?because kangaroo rats consume water in very limited wayand slow their metablic rate.

Ans 5:

Midhuna from ABCD, Banglore
Class : Class 3
no, I changed my answer there is a misconception that camels drink less water.A camel's water intake varies according to his environment, his exertion level, and the amount of fat in his hump. A thirsty camel can drink more than 30 gallons of water in less than 15 minutes. 1.1 A typical camel can drink 200 liters (53 gallons) of water in three minutes. they drink a lot of water but can also go a long time without drinking water...hope it helps

Ans 6:

shweta garg from Apeejay School, Ghaziabad
Class : Class 7
c c c c c c c c c c c c c c c c c c c cc c c c c c c c c c c c c it should be c

Ans 7:

Admin fly from Ddssxxx, Ax
Class : Class 1
THE ANSWER SHOULD BE C !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Ans 8:

Agastya Tripathi from dps gurgaon, Gurgaon
Class : Class 4
cccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccc

Ans 9:

Antareep Mukherjee from New Horizon Public School, Bangalore
Class : Class 8

Post Your Answer

Ashwin Shridhar from Vidyashilp Academy, Bangalore
Subject :NSO    Class : Class 7

Ans 1:

Tanushree from Asian International School, Colombo
Class : Class 7

Ans 2:

Venya Vikas from Chirec International , Hyderabad
Class : Class 7
It should be option A

Ans 3:

Admin fly from Ddssxxx, Ax
Class : Class 1
NA

Ans 4:

Surya from INDIAN SCHOOL JALAN OMAN, Alkamil oman
Class : Class 7
it is wrong because north east India receives less rainfall as rajasthan is in north east india

Ans 5:

Admin fly from Ddssxxx, Ax
Class : Class 1

Post Your Answer

Shreya Mahesh from Sri Sri Ravishankar Vidya Mandir, Bangalore
Subject :NSO    Class : Class 8

Ans 1:

Labonyo Sen from Calcutta Girls High School, KOLKATA
Class : Class 9
Cholera and typhoid

Ans 2:

Labonyo Sen from Calcutta Girls High School, KOLKATA
Class : Class 9
Cholera and typhoid

Post Your Answer