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Kshitij verma from DPS KAMPTEE NAGPUR, Nagpur
Subject :NSO    Class : Class 8

Ans 1: (Master Answer)

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

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Prachi from Carmel high school gadchiroli , Gadchiroli
Subject :NSO    Class : Class 10

Ans 1:

Abhilash from The ngp school, Coimbatore
Class : Class 10
Ans C

Ans 2:

Avinash Mishra from Central Hindu School, Gorakhpur
Class : Class 10
Ans is c

Ans 3:

Abhilash from The ngp school, Coimbatore
Class : Class 10
Ans C

Ans 4:

Rikhil Gupta from Christ Academy, Bengaluru
Class : Class 9

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Sagar G V from Tuto Bytes, Hyderabad
Subject :NSO    Class : Class 4

Ans 1:

KUNAL JHAM from The Shishukunj International School, INDORE
Class : Class 5
ZW,M35645RX7LNASZETZYE4TSNAEN3ENBQ42

Ans 2:

Suhana Kedia from Griffin's international school, Kharagpur
Class : Class 5
I see

Ans 3:

vedant from TSRS Aravalli, Gurgaon
Class : Class 5
b

Ans 4:

Saumya Asmriti from CITY MONTESSORY SCHOOL INTER COLLEGE LUCKNOW UTTAR PRADESH, Lucknow
Class : Class 4

Ans 5: (Master Answer)

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

Ans 6:

Akshaj V from PSBB Senior Secondary School, Chennai
Class : Class 6
GRAHH

Ans 7:

Naisha Bhatia from Cambridge court high school, Jaipur
Class : Class 7
correct answer is b

Ans 8:

gautam from GIIS KL, Kuala Lumpur
Class : Class 5
The answer cannot be B because the timeline Q-R is a decrease in pollution whereas if a factory was set up in point Q.Q-R would be an increase of pollution and not a decrease.In point P trees were cut and because of that P-Q is an increase in pollution and not a decrease .So,the answer is not B but A.

Ans 9:

Annlisa Castlia from BPS, HYD
Class : Class 5
The correct answer is option A

Ans 10:

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

Ans 11:

Vedang Siddharth Thakare from SMT's Saraswati English Medium School., Thane
Class : Class 4
The answer is b

Ans 12:

Aaryav Misra from Vibgyor High, Bengaluru
Class : Class 4
But why not D? If trees were cut down at point P, then why is the point at lowest pollution?

Ans 13:

KUNAL JHAM from The Shishukunj International School, INDORE
Class : Class 5
ANSWER IS B !!!!!!!

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

Ans 1:

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

Ans 2:

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

Ans 3:

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 4:

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 5:

Avyukth Radhakrishnan from TSRS, Gurgaon
Class : Class 10
yeah

Ans 6:

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

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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:

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

Ans 3:

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

Ans 4:

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

Ans 5:

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

Ans 6: (Master Answer)

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

Ans 7:

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

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

Ans 1:

Ibrahim Aslam from uttam, Ghaziabad
Class : Class 5
Augustine is correct.

Ans 2:

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

Ans 3:

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

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

Ans 1:

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

Ans 2:

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

Ans 3:

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

Ans 4: (Master Answer)

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

Ans 5:

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

Ans 6:

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

Ans 7:

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

Ans 8:

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 9:

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

Ans 10:

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 11:

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

Ans 12:

Amol Athawale from WoodRidge High, aurangabad
Class : Class 7

Ans 13:

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

Ans 14:

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

Ans 15:

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

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:

sk from psbb millennium school, Chennai
Class : Class 9

Ans 18:

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

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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:

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

Ans 3:

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

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

Ans 2:

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

Ans 3:

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

Ans 4: (Master Answer)

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

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:

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

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