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SYNA from Bal Bharati Public School, New Delhi
Subject :NSO    Class : Class 8

Ans 1:

Harshit from Army Public School, Lucknow
Class : Class 9
Hi friend. The ans is (A) 100 because on richter scale the magnitude is increased ten times every number. for example 2 is 10 times 1 on richter scale.

Ans 2:

Ankit kumar Jha from Ryan International School , Ghaziabad
Class : Class 9
YesvI think the same

Ans 3:

Anshuman D from MVM, Hyderabad
Class : Class 9
Yeah bro

Ans 4:

Ayush Gorain from Sarala Birla Public School, Ranchi
Class : Class 8
In my opinion, the answer should be option (A) instead of option (B). On the Richter scale (which is a non-linear scale), the power of an earthquake increases by 10 with every consequent number. Thus, an earthquake of 2 on the Richter scale is 10 times more powerful than an earthquake of 1 on the Richter scale. Thus, an earthquake of 8 on the Richter scale is more powerful than an earthquake of 6 on the Richter scale, by a factor of 10⁸⁻⁶, or 10². Thus, an earthquake of 8 on the Richter scale is 100 times more powerful than an earthquake of 6 on the Richter scale.

Ans 5:

Aryan Raina from MGN Public School, Jalandhar
Class : Class 8
YOu are absolutely right dude

Ans 6:

Avyukth Radhakrishnan from TSRS, Gurgaon
Class : Class 10
yeah

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

Ans 1:

AHANA BAG from DELHI PUBLIC SCHOOL JOKA SOUTH KOLKATA, KOLKATA
Class : Class 9

Ans 2:

AHANA BAG from DELHI PUBLIC SCHOOL JOKA SOUTH KOLKATA, KOLKATA
Class : Class 9

Ans 3:

AHANA BAG from DELHI PUBLIC SCHOOL JOKA SOUTH KOLKATA, KOLKATA
Class : Class 9

Ans 4:

Dishita Santosh Walujkar from Nutan English School, Kurduwadi
Class : Class 7
C

Ans 5: (Master Answer)

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

Ans 6:

AHANA BAG from DELHI PUBLIC SCHOOL JOKA SOUTH KOLKATA, KOLKATA
Class : Class 9

Ans 7:

Brinda Modi from Orchids International School, Pune
Class : Class 6
C for sure

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

Ans 1:

SOUMI PAL from DELHI PUBLIC SCHOOL, DURG
Class : Class 6

Ans 2:

Ibrahim Aslam from uttam, Ghaziabad
Class : Class 6
Augustine is correct.

Ans 3:

Augustine from , coimbatore
Class : Class 6
THE ANSWER IS C BECAUSE BY INCREASING THE TILT OF THE TRAY, THE WATER FLOWS FAST AND ERODES THE SOIL MORE

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

Ans 1:

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

Ans 2:

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

Ans 3:

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 4:

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

Ans 5: (Master Answer)

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

Ans 6:

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

Ans 7:

Amol Athawale from WoodRidge High, aurangabad
Class : Class 7

Ans 8:

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

Ans 9:

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 10:

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

Ans 11:

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

Ans 12:

sk from psbb millennium school, Chennai
Class : Class 9

Ans 13:

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

Ans 14:

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

Ans 15:

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

Ans 16:

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

Ans 17:

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

Ans 18:

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.

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

Ans 1:

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

Ans 2:

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

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:

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

Ans 2:

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

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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:

Ibrahim Aslam from uttam, Ghaziabad
Class : Class 6
B😰

Ans 3: (Master Answer)

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

Ans 4:

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

Ans 5:

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

Ans 6:

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

Ans 7:

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

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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:

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

Ans 3:

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

Ans 4:

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

Ans 5:

Shivangi from GEA, Mumbai
Class : Class 7
c

Ans 6:

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

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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:

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

Ans 2: (Master Answer)

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

Ans 3:

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

Ans 4:

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

Ans 5:

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

Ans 6:

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

Ans 7:

sanjana from NARAYANA E TECHNO , Chennai
Class : Class 8

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:

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 10:

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

Ans 11:

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

Ans 12:

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

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