National Science Olympiad Forum By SOF Olympiad Trainer - Page 557
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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:

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

Ans 3: (Master Answer)

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

Ans 4:

Bushra aslam from uttam, Ghaziabad
Class : Class 8
B😰

Ans 5:

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

Ans 6:

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

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:

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

Ans 2:

SOUVAGYA SAHA from De Nobili School, DHANBAD
Class : Class 9

Ans 3:

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

Ans 4:

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

Ans 5:

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

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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

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

Ans 1: (Master Answer)

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

Ans 2:

sanjana from NARAYANA E TECHNO , Chennai
Class : Class 8

Ans 3:

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

Ans 4:

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

Ans 5:

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

Ans 6:

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

Ans 7:

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

Ans 8:

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

Ans 9:

Ashwak from Cambridge, Jalandhar
Class : Class 8
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 10:

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

Ans 11:

Siddharth Laxmisha from The Study Lecole Internationale, PUDUCHERRY
Class : Class 7
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 12:

Anantjit Chander from The Modern School, Sector 85, Greater Faridabad, Faridabad
Class : Class 8
But what is the explanation?

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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:

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

Ans 3: (Master Answer)

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

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

Ans 1:

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

Ans 2:

anu from Haralur, Bengaluru
Class : Class 5

Ans 3:

anu from Haralur, Bengaluru
Class : Class 5

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sheetal Gupta from ,
Subject :NSO    Class : Class 5

Ans 1:

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 2:

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

Ans 3:

HIMANISH BASU from APS BANGALORE , Bangalore
Class : Class 7

Ans 4:

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

Ans 5:

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

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

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sheetal Gupta from ,
Subject :NSO    Class : Class 5

Ans 1:

Khushie from Gdgps gurugram, Gurgaon
Class : Class 5
C

Ans 2:

Manasvi Nagpal from blooming dales international school, sri ganganagar
Class : Class 5
ccccccccccccc

Ans 3:

SHAURYA SINHA from GREEN FIELDS SCHOOL , NEW DELHI
Class : Class 5
Ans- C

Ans 4:

JOVITA MERIN JOBI from BHAVANS VIDYA MANDIR ELAMAKKARA, KOCHI
Class : Class 5
The answer is C Because Tadpoles breath through gills but gills are not given in the grid

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Ankush Ghosh from DPS, Doha
Subject :NSO    Class : Class 5

Ans 1:

Prisha Shah from Euroschool Airoli, Mumbai
Class : Class 6
The explaination of this question is not complete.SOF please edit it.

Ans 2:

Nishkarsh Sharma from Podar International School, Ahmedabad
Class : Class 5

Ans 3:

Srija Das from Sent Joseph Convent Chandannagar, Serampore
Class : Class 10
B

Ans 4:

Prisha Shah from Euroschool Airoli, Mumbai
Class : Class 6

Ans 5:

SHREYAS ANANDHAN from Phoenix Greens International School, Hyderabad
Class : Class 6
b

Ans 6:

Karan Chavan from GIIS,Chinchwad, Pune
Class : Class 5
b

Ans 7:

Karan Chavan from GIIS,Chinchwad, Pune
Class : Class 5
b

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Anmol kathar from deogiri global academy, aurangabad
Subject :NSO    Class : Class 6

The different steps of vermicomposting are given below randomly.
(i) Spread sand on the floor of the pit
(ii) Place red worms in the pit
(iii) Cover with a grass
(iv) Sprinkle water to keep it moist
(v) Dig a pit in a suitable place
(vi) Add vegetable peels and fruit waste in the pit
Which of the following represents the correct sequence of steps?

A (v) → (vi) → (i) → (iii) → (ii) → (iv)
B (v) → (i) → (vi) → (iii) → (iv) → (ii)
C (v) → (i) → (iii) → (vi) → (ii) → (iv)
D (v) → (ii) → (iii) → (iv) → (i) → (vi)


Ans 1:

Hamsavarshini Swaminathan from St Anns Senior Secondary School, Roorkee
Class : Class 10
in a much better way First we have to dig the ground. (v)| Then we spread sand on the floor of the pit so that the pit remains open for a longer time. (i)| Then we can add the waste we planed to throw in the pit. (vi) | We have to then cover with grass so that the pit remains closed. (iii) | Moisture is required for wastes to decompose. (iv) | We can later place red worms, as they are very good decomposers_ to speedthe decomposing proccess. (ii)|

Ans 2:

Pavani Soni from VYDEHI , Bengaluru
Class : Class 7
B

Ans 3:

Hamsavarshini Swaminathan from St Anns Senior Secondary School, Roorkee
Class : Class 10
First we have to dig the ground. (v) Then we spread sand on the floor of the pit so that the pit remains open for a longer time. (i) Then we can add the waste we planed to throw in the pit. (vi) We have to then cover with grass so that the pit remains closed. (iii) Moisture is required for wastes to decompose. (iv) We can later place red worms, as they are very good decomposers_ to speedthe decomposing proccess

Ans 4:

ADVAY BANSAL from LOTUS VALLEY INTERNATIONAL SCHOOL GURUGRAM, GURUGRAM
Class : Class 6

Ans 5:

Hamsavarshini Swaminathan from St Anns Senior Secondary School, Roorkee
Class : Class 10
in a much better way First we have to dig the ground. (v) Then we spread sand on the floor of the pit so that the pit remains open for a longer time. (i) Then we can add the waste we planed to throw in the pit. (vi) We have to then cover with grass so that the pit remains closed. (iii) Moisture is required for wastes to decompose. (iv) We can later place red worms, as they are very good decomposers_ to speedthe decomposing proccess. (ii)

Ans 6:

VIJAYA SREYAS B from NARAYANA OLYMPIAD SCHOOL KUKATPALLY, HYDERABAD
Class : Class 6
option B

Ans 7:

ARUNAV from DPS VINDHYANAGAR, VINDHYANAGAR
Class : Class 9

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