National Science Olympiad Forum By SOF Olympiad Trainer - Page 607
  1. Home
  2. /  Forum

User Forum

Ask Your Question
Ethel shiju from National Public School Indiranagar, Bangalore
Subject :NSO    Class : Class 8

Ans 1:

Sainyam Sharma from Thakur Public School, Mumbai
Class : Class 8
D

Ans 2:

Student from School, City
Class : Class 8
It should be answer D. If wavelength changes, frequency and time period will also change.

Ans 3:

Jeevika Jeeth Vijayakar from HFS, Thane
Class : Class 9
d is correct

Ans 4:

Ashmi Narkar from The Shishukunj International School, Jhalaria Campus, Indore
Class : Class 9
IT IS D!

Ans 5:

aditya arora from Heritage Experiential Learning School, gurugram
Class : Class 8
d

Ans 6:

Satvik Mehta from St Andrews school Bowenpally, Secunderabad
Class : Class 4

Ans 7:

Aditya Soni from Saint Xavier School, hariyana
Class : Class 8

Ans 8:

Amol Athawale from WoodRidge High, aurangabad
Class : Class 7

Ans 9:

Het Aryan from Podar International School , Pune
Class : Class 9

Ans 10: (Master Answer)

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

Ans 11:

Akshara from NPS, Bengaluru
Class : Class 8
The answer is D. If wavelength changes , then frequency and time period will also change. Wavelength is inversely propotional to frequency and directly propotional to time period.

Ans 12:

arnav ghatti from mount saint marys, NEW DELHI
Class : Class 6

Ans 13:

Vartika Agarwal from Phoenix world school, Pune
Class : Class 9
no it can not be option d as temperature has no effect on frequency. Wheather temperature increases or decreases frequency remains unchanged. So, the answer could be either time period or frequency.

Ans 14:

sk from psbb millennium school, Chennai
Class : Class 9

Ans 15:

Dhanishta Kashyap from Gaur international School, Noida
Class : Class 3

Ans 16:

Antarik Maity from Bharatiya Vidyabhaban, Kolkata
Class : Class 8
The correct answer should be D. Because temperature of air increases, density decreases and so, frequency of sound increases. But, according to me, it may or may not affect the wavelength, but the time period will definitely decrease. The options are a bit confusing.....

Ans 17:

Rakshit Mittal from Atomic energy central school 4, Mumbai
Class : Class 10
yeah, the answer is d

Ans 18:

Satvik Mehta from St Andrews school Bowenpally, Secunderabad
Class : Class 4

Post Your Answer

Rushil Dubey from Acharyakulam, Haridvar
Subject :NSO    Class : Class 7

Ans 1:

swagata ganguly from WWA COSSIPORE ENGLISH SCHOOL, KOLKATA
Class : Class 7
i wiil go with c

Ans 2:

Shriyam from Chinmaya vidyalaya Bokaro, Bokaro
Class : Class 7
Answer is C

Ans 3:

Kartik Saxena from Mercy Memorial School, Kanpur
Class : Class 7
I will go with D

Post Your Answer

Khushi singh from Presidium dwarka 22, Dwarka
Subject :NSO    Class : Class 7

Ans 1:

Dhruvan G from Indian School Al Ghubra, Muscat
Class : Class 8
It's (A) as evaporation causes cooling.

Ans 2:

Hritvi from Podar International School, Mumbai
Class : Class 7
A is the right option

Post Your Answer

Mannat Verma from Vivek High School , Chandigarh
Subject :NSO    Class : Class 4

Ans 1:

Ajoy Bhuyan from DELHI PUBLIC SCHOOL, Bongaigaon
Class : Class 4

Ans 2:

Nishit Vaity from Euro School Airoli, Navi Mumbai
Class : Class 6

Ans 3:

Ajoy Bhuyan from DELHI PUBLIC SCHOOL, Bongaigaon
Class : Class 4

Ans 4: (Master Answer)

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

Ans 5:

Sourish Mahakul from Delhi Public School Electronic City, Bengaluru
Class : Class 8
correct ans is b

Ans 6:

Ajoy Bhuyan from DELHI PUBLIC SCHOOL, Bongaigaon
Class : Class 4
ADMIN

Ans 7:

Ibrahim Aslam from uttam, Ghaziabad
Class : Class 5
B😰

Post Your Answer

Girish Jayan from National centre for excellence, Bengaluru
Subject :NSO    Class : Class 6

Ans 1:

SOUVAGYA SAHA from De Nobili School, DHANBAD
Class : Class 10

Ans 2:

Anay Misra from DPS Sector-122 Noida, Noida
Class : Class 6

Ans 3:

Girish Jayan from National centre for excellence, Bengaluru
Class : Class 5
http://www.sofolympiadtrainer.com/user/endTest/resultReport

Ans 4:

Shivangi from GEA, Mumbai
Class : Class 6
c

Ans 5:

Aadhira from velammal new gen school, Medavakkam, Chennai
Class : Class 6
The answer is (c)

Ans 6:

Aarnav Grover from Anand Niketan Shilaj, Ahmedabad
Class : Class 9
c

Post Your Answer

Pranav Kannan from Phoenix Greens, Hyderabad
Subject :NSO    Class : Class 3

Ans 1:

Pranav Kannan from Phoenix Greens, Hyderabad
Class : Class 3

Ans 2:

Eklavya Gondule from DPS Bhilai, BHILAI
Class : Class 7
w4aestdryuvghibj

Post Your Answer

Aneesh Rajput from LOTUS VALLEY INTERNATIONAL SCHOOL, NOIDA
Subject :NSO    Class : Class 4

Ans 1:

vineet8026@gmail.com from dps, Doha
Class : Class 1
Thanks for the answer. ......

Ans 2:

Anantjit Chander from Apeejay School, Sector 15, Faridabad
Class : Class 10
But what is the explanation?

Ans 3:

shreyansh2010 from Prudence, New Delhi
Class : Class 7
Answer D look like correct too

Ans 4:

Ashwak from Cambridge, Jalandhar
Class : Class 9
Answer C is correct because Red and Blue light are absorbed and used for Photosynthesis . But in D it is written Green light is reflected ( correct ) but is used for Photosynthesis ( incorrect )

Ans 5:

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

Ans 6:

Advika Narkar from The Shishukunj International School, Jhalaria Campus, Indore
Class : Class 8
Pls explainI agree with shreyansh2010

Ans 7:

Siddharth Laxmisha from The Study Lecole Internationale, PUDUCHERRY
Class : Class 8
No, Answer D is not correct. They are talking about red, blue, and green lights not red, blue, and green pigments in a leaf. Red and blue lights are efficient in photosynthesizing and the green pigment is also efficient in photosynthesizing. Here, they are talking about lights, not pigments in a leaf.

Ans 8:

sanjana from NARAYANA E TECHNO , Chennai
Class : Class 8

Ans 9: (Master Answer)

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

Ans 10:

Mohhika Sharma from Delhi Public School Greater Noida, Greater Noida
Class : Class 7
What????!!How?????!!!Please answer!!

Ans 11:

Anushtubh Ashish Sonawane from Blue Ridge Public School, Pune
Class : Class 5
howwwwwwwww pls 4my sanity tell me

Ans 12:

shreyansh2010 from Prudence, New Delhi
Class : Class 7
Got it as green color reflected thus will not be used for photosynthesis

Post Your Answer

Rikhil Gupta from Christ Academy, Bengaluru
Subject :NSO    Class : Class 9

Ans 1: (Master Answer)

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

Ans 2:

from kv2, kalpakkam
Class : Class 9
i have got C

Ans 3:

Kingshuk Gupta from RN Podar school, Mumbai
Class : Class 9

Post Your Answer

nageshrc228 from sangameshwar public school, Solapur
Subject :NSO    Class : Class 4

Ans 1:

anu from Haralur, Bengaluru
Class : Class 5

Ans 2:

ikshika kumar from MVN SCHOOL, FARIDABAD
Class : Class 7
B) West

Ans 3:

anu from Haralur, Bengaluru
Class : Class 5

Post Your Answer

sheetal Gupta from ,
Subject :NSO    Class : Class 5

Ans 1:

Khushie from Gdgps gurugram, Gurgaon
Class : Class 5
C is correct

Ans 2:

HIMANISH BASU from APS BANGALORE , Bangalore
Class : Class 7

Ans 3:

Swarit from Indian School Wadi kabir, Muscat
Class : Class 6
Observe the given diagram carefully which shows a reflex arc. The diagram is show a finger touching the flame of the burning candle. The Sensory Neuron P takes the message of the burning finger to the Relay Neuron R in spinal cord. The Motor Neuron Q takes the message from the Relay Neuron R to the related muscle to act accordingly and pull the finger away. Now, if the orientation of Motor Neuron Q is changed (red arrow) and made as that of Sensory Neuron P, that means message from Motor Neuron Q will go from Muscle to the Relay Neuron R. Now, let’s check the following options to see what will happen: A.All voluntary movements of body including reaction to heat will stop. ----- Incorrect. Reaction to heat is an involuntary reflex response. It will stop if the orientation of Motor Neuron Q is changed. But voluntary movements of the body, which are in control of our brain, will go on. B.The sensory receptor will not get stimulus from the candle. ----- Incorrect. The orientation of Sensory Neuron P is still the same, so sensory receptors in spinal cord will continue to get the stimulus of heat from the candle. C.The motor organ will not be able to get instructions from the spinal cord. ----- Correct. The orientation of Motor Neuron Q has been changed, so instruction from spinal cord will not reach the motor organ (muscle). It will go from muscle to the spinal cord instead. D.None of these ----- Incorrect. Hence, the right answer is Option C.

Ans 4:

Yash Tulshyan from Sterling school, New Mumbai
Class : Class 5

Ans 5:

Pragun goel from Venkateshwar International School, Delhi
Class : Class 8

Ans 6:

Swarit from Indian School Wadi kabir, Muscat
Class : Class 6
this question is so hard

Ans 7:

Siddhant Singhania from AGCS purulia, Puruliya
Class : Class 7

Post Your Answer