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

User Forum

Ask Your Question
Nipun sharma from gail dav public school, Auraiya
Subject :NSO    Class : Class 7

Ans 1:

Aditya kumar from Sapphire International School, Noida
Class : Class 8
ITS OPTION "C" AS SOME OF THE LIGHT REFRACTS IN WATER AND AIR

Ans 2:

Senthil Kumar from ARB INTERNATIONAL SCHOOL, Coimbatore
Class : Class 7
I THINK SO ANSWER IS C

Ans 3:

anirudh_suresh@rocketmail.com from bangalore international academy, Bengaluru
Class : Class 7
B IS THE CORRECTONE. BELIVE ME

Ans 4:

Aditya kumar from Sapphire International School, Noida
Class : Class 8
Its "c" because some of the light rays get refracted

Ans 5:

KISHORE KUMAR E from MAHARISHI INTERNATIONAL RESIDENTIAL SCHOOL, SUNGUVARCHATHIRAM
Class : Class 9
ANSWER a. Refraction of light and the direction of refraction depends upon the density of the object because it reduces the speed of light.the Flint glass is more denSer than water and the air is no too denSer so there will be no refraction in the caSe of air. Therefore light refracts in water and the glass. ANOTHER REASON!: Light travalS on a straight line .

Ans 6:

Dr D Martin from Harvard School pf Physics, Boston
Class : Class 1
C is the correct answer. I teach Physics. The angle of incidence entering and exiting is the same due to the same medium.

Post Your Answer

Arka Chakraborty from St. Patrick's Academy, Bengaluru, Bengaluru
Subject :NSO    Class : Class 4

Ans 1:

Mahadevan from KV Rubber Board Kottayam, Kottayam
Class : Class 5
question is wrong

Ans 2:

Bushra aslam from uttam, Ghaziabad
Class : Class 4

Ans 3:

Mahadevan from KV Rubber Board Kottayam, Kottayam
Class : Class 5

Post Your Answer

Dev Narayan Vinu from St. Thomas Residential School, Thiruvananthapuram
Subject :NSO    Class : Class 4

Ans 1: (Master Answer)

Admin from revisewise, Noida
Class : Class 1
The correct answer is C.

Post Your Answer

rittik singh from ,
Subject :NSO    Class : Class 5

Ans 1:

PRADYUMNA OMPRAKASH GONDULE from DPS BHILAI, Bhilai
Class : Class 7
yes,Sharad you are right but can you explain

Ans 2:

Sharad Jain from Presidium, Ghaziabad
Class : Class 5
Hello ! It is C as when the smell is spread , People notice it at some other room . It's the same with perfume .

Ans 3:

PRADYUMNA OMPRAKASH GONDULE from DPS BHILAI, Bhilai
Class : Class 7

Post Your Answer

BHAVYA GOYAL from Venkateshwar International School Sec 10 Dwarka New Delhi, New Delhi
Subject :NSO    Class : Class 3

Ans 1: (Master Answer)

Admin from revisewise, Noida
Class : Class 1
The correct answer is C. Because, after May, the consumption keeps getting lower which indicates that they started saving water.

Post Your Answer

Jyothi from CMR NPS, Bengaluru
Subject :NSO    Class : Class 6

Shruti in an experiment, put a healthy, green plant in different conditions during a day, at different times P, Q and R. The rate of oxygen absorbed or released by this plant is shown in the given graph.



Which of the following assumptions can be made about this experiment?

AAt time P, that plant was put in a dark cupboard.
BAt time Q, plant is not respiring because, no oxygen is being taken up.
CAt time Q, the plant was moved to a dark room.
DAt time R, the plant was put in a well lighted place.


The answer given by Olympiad trainer is B but We all know that plants respire all the time. May I know the right answer

Ans 1:

Saurabh from Global Indian international school, Singapore
Class : Class 6

Ans 2:

Hrithik Peddireddy from Oakridge International School, Hyderabad
Class : Class 6

Post Your Answer

Kushagra Shukla from Presidium dwarka, New Delhi
Subject :NSO    Class : Class 4

Ans 1:

AniAdi from Cambridge public school, Bangalore
Class : Class 5
Screw is used to fasten things and not really used to lower and raise things.. Isnt D incorrect too?

Ans 2:

NIRMAY JOSEPH from DON BOSCO PARK CIRCUS, Kolkata
Class : Class 5

Post Your Answer

Joahanna from SBIOA International school, CHENNAI
Subject :NSO    Class : Class 3

Ans 1:

Harry Potter from Hotel California, California
Class : Class 4

Ans 2:

Harry Potter from Hotel California, California
Class : Class 4
Yes, the figure is not clearly printed and the options are not too clear .

Ans 3:

from , Bengaluru
Class : Class 5
the figure markings are not clearly printed.

Ans 4:

Aarush from CA, Bengaluru
Class : Class 5
The figure is not clear. The options have not been printed correctly.

Post Your Answer

Krethick Ravichandran from Yuvabharathi International School, Singapore
Subject :NSO    Class : Class 3

Ans 1: (Master Answer)

Admin from revisewise, Noida
Class : Class 1
The correct answer is B.

Post Your Answer

kushagraghuryani2016 from DPS, New Delhi
Subject :NSO    Class : Class 5

Ans 1:

ANAY ROSHAN from SAINT STEPHENS, CHANDIGARH
Class : Class 5
please explain the answer

Ans 2:

RIDHASEN PRIYASEN SHAH from The Rajkumar College, Rajkot, Rajkot
Class : Class 4
The ans of this question is different in the NSO workbook.why? how? please explain

Ans 3:

PARNIKA SINGH from NH GOEL WORLD SCHOOL, RAIPUR
Class : Class 7
Answer of Q-21 is W not Z. Pl check

Ans 4:

ANANYA.KUMAR from DPS Noida, Noida
Class : Class 5
explain????

Ans 5:

VARALIKA.GOENKA from DPS Noida, Noida
Class : Class 5
Please explain the answer

Ans 6:

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

Ans 7:

Bitan Karan from DAV Public School, Haldia Township
Class : Class 7
Explanation ‼️❓⁉️❔

Ans 8:

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

Ans 9:

Rishit Sharma from new horizon gurukul, Bengaluru
Class : Class 6
the greatest speed will be at w and lest at z pls check

Ans 10:

RIDHASEN PRIYASEN SHAH from The Rajkumar College, Rajkot, Rajkot
Class : Class 4
The ans of this question is different in the NSO workbook.why? how? please explain

Ans 11:

Geetika from Nps international, Singapore
Class : Class 4
please explain the answer

Ans 12:

Adithya from narayana, Chennai
Class : Class 9
W

Post Your Answer