National Science Olympiad Forum By SOF Olympiad Trainer - Page 666
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Ethel shiju from National Public School Indiranagar, Bangalore
Subject :NSO    Class : Class 8

Ans 1:

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

Ans 2:

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

Ans 3: (Master Answer)

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

Ans 4:

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 5:

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

Ans 6:

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 7:

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

Ans 8:

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

Ans 9:

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

Ans 10:

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

Ans 11:

sk from psbb millennium school, Chennai
Class : Class 9

Ans 12:

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

Ans 13:

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

Ans 14:

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

Ans 15:

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

Ans 16:

Amol Athawale from WoodRidge High, aurangabad
Class : Class 7

Ans 17:

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 18:

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

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

Ans 1:

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

Ans 2:

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

Ans 3:

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

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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

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

Ans 1:

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

Ans 2: (Master Answer)

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

Ans 3:

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

Ans 4:

Ibrahim Aslam from uttam, Ghaziabad
Class : Class 2
B😰

Ans 5:

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

Ans 6:

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

Ans 7:

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

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

Ans 1:

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

Ans 2:

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

Ans 3:

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

Ans 4:

Shivangi from GEA, Mumbai
Class : Class 7
c

Ans 5:

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

Ans 6:

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

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

Ans 1:

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

Ans 2:

Pranav Kannan from Phoenix Greens, Hyderabad
Class : Class 3

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

Ans 1:

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

Ans 2:

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

Ans 3:

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

Ans 4:

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

Ans 5:

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

Ans 6: (Master Answer)

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

Ans 7:

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

Ans 8:

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 9:

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

Ans 10:

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 11:

sanjana from NARAYANA E TECHNO , Chennai
Class : Class 8

Ans 12:

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

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

Ans 1:

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

Ans 2: (Master Answer)

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

Ans 3:

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

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

Ans 1:

anu from Haralur, Bengaluru
Class : Class 5

Ans 2:

anu from Haralur, Bengaluru
Class : Class 5

Ans 3:

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

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sheetal Gupta from ,
Subject :NSO    Class : Class 5

Ans 1:

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

Ans 2:

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

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:

HIMANISH BASU from APS BANGALORE , Bangalore
Class : Class 7

Ans 5:

Siddhant Singhania from The Assembly of God Church School, Purulia, Purulia
Class : Class 8

Ans 6:

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

Ans 7:

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

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