National Science Olympiad Forum By SOF Olympiad Trainer - Page 577
  1. Home
  2. /  Forum

User Forum

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

Ans 1:

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

Ans 2:

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

Ans 3:

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

Ans 4:

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

Ans 5:

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 6:

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

Ans 7:

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

Ans 8:

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

Ans 9:

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 10:

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 11:

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

Ans 12:

Rishi Gopi from Loyola, Trivandrum
Class : Class 9

Ans 13:

PARTH JAIN from DPS INDIRAPURAM, GHAZIABAD
Class : Class 8

Ans 14:

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

Ans 15:

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

Ans 16:

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 17:

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 18:

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!

Post Your Answer

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

Ans 1:

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

Ans 2:

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

Ans 3:

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

Ans 4:

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

Ans 5:

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

Ans 6:

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

Post Your Answer

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

Ans 1:

Ashwak from Cambridge, Jalandhar
Class : Class 9
D

Ans 2:

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

Ans 3:

Shiven Dinkar from DPS Noida, Delhi
Class : Class 4

Ans 4:

anu from Haralur, Bengaluru
Class : Class 5

Ans 5:

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

Ans 6:

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 7:

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

Ans 8:

Ibrahim Aslam from uttam, Ghaziabad
Class : Class 5
DDD

Ans 9:

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

Ans 10: (Master Answer)

Admin from revisewise, Noida
Class : Class 1

Ans 11:

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

Ans 12:

anu from Haralur, Bengaluru
Class : Class 5

Ans 13:

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

Ans 14:

Bharat Aggarwal from Kalyani school, Pune1
Class : Class 4

Ans 15:

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

Ans 16:

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

Ans 17:

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

Ans 18:

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

Ans 19:

Divyanshi from The Heritage school, Kolkata
Class : Class 5
D is the right ansExplanation- LOW VITAMIN A - NIGHT BLINDNESSLOW V. B - BERI BERI

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:

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

Ans 3:

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

Ans 4:

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

Ans 5:

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

Ans 6:

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

Ans 7:

k tagore from montessori school, KURNOOL
Class : Class 3

Ans 8:

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

Ans 9:

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

Ans 10:

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

Ans 11:

BV Karthikeya from Sentia, Hyderabad
Class : Class 6

Ans 12:

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

Ans 13:

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

Ans 14:

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

Ans 15:

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 16:

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

Ans 17:

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

Ans 18:

ishi gupta from DPS NOIDA, NOIDA
Class : Class 4

Ans 19:

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

Ans 20:

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

Ans 21:

EKLAVYA GONDULE from DPS BHILAI, Bhilai
Class : Class 7

Ans 22:

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.

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:

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

Ans 3:

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

Ans 4:

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 5:

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 6:

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

Ans 7:

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 8:

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

Ans 9:

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

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:

Admin fly from Ddssxxx, Ax
Class : Class 1
NA

Ans 3:

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 4:

Admin fly from Ddssxxx, Ax
Class : Class 1

Ans 5:

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

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

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

Ans 1:

Nishtha maheshwari from Inventure Academy, Bengaluru
Class : Class 3

Ans 2:

Risha Jakhotiya from Sanskriti School , Pune
Class : Class 3
The correct answer is B.

Ans 3:

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

Ans 4:

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

Post Your Answer