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Rudra from VSPK international school sec -13 Rohini Delhi, Delhi
Subject :NSO    Class : Class 8

Ans 1:

Karthik Rao Varam from Bala Vidya Mandir, Chennai
Class : Class 10

Ans 2:

Ruchi Sinha from DPS Gurgaon , Gurgaon
Class : Class 8
NA? what is the explanation of the answer

Ans 3:

Akshara from NPS, Bengaluru
Class : Class 8
Exactly.What does NA mean ??

Ans 4:

Aniket Kumar from Gyan Niketan, Patna
Class : Class 8

Ans 5:

Ruchi Sinha from DPS Gurgaon , Gurgaon
Class : Class 8

Ans 6:

Ankit kumar Jha from Ryan International School , Ghaziabad
Class : Class 9
NA meant no answer is correct and we had to leave this one empty

Ans 7:

Amol Athawale from WoodRidge High, aurangabad
Class : Class 7
if there is no answer,then why was it considered wrong?it is not fair.

Ans 8:

Ashvik Banerjee from Mount Litera Zee School , Vasco
Class : Class 9
What 'NA' ? The question itself is incorrect

Ans 9:

Akshara from NPS, Bengaluru
Class : Class 8
Yes , NA means 'no answer' So , since there is no such option , anything we pick would be incorrect.

Ans 10:

Amol Athawale from WoodRidge High, aurangabad
Class : Class 7

Ans 11:

HELEN ELDHO from MAR ATHANASIUS, KOOVAPPADY
Class : Class 9
why no reply...

Ans 12:

Jayadeep Shanmugam from Sri Sri Ravishankar Vidya Mandir, Bangalore
Class : Class 8
Please give the answer to this Question.

Ans 13:

Karthik Rao Varam from Bala Vidya Mandir, Chennai
Class : Class 10

Ans 14:

Nipun Abhilash from National Public School, Banashankhari, Bangalore
Class : Class 9

Ans 15:

Mridul Vashisht from St. Kabir Public School, Chandigarh
Class : Class 8
Woah how are the marks out of 60 then. People have already attempted this paper in the given year. This means an error in the paper was there that wasn't rectified...

Ans 16:

Mani Gupta from Carmel Convent School, Faridabad
Class : Class 9
Please explain the answer

Ans 17:

Akshara from NPS, Bengaluru
Class : Class 8
Arrows are marked wrongly...I dont think these mistakes will ever get rectified considering that people have been writing in this forum, for the past two years, for this question. please look into this sof🙂

Ans 18:

Suvan Shee from Chirec public school, Hyderabad
Class : Class 9
"NA"?.please explain the answer

Ans 19:

Avanish Pandey from St Francis school , Bilaspur
Class : Class 9

Ans 20:

Avyukth Radhakrishnan from TSRS, Gurgaon
Class : Class 10
NA means 'No Answer'.But the guidelines clearly state 'Mark all questions.'How is this fair?

Ans 21:

Naveen Kumar from Gail DAV Public School, Dibiyapur
Class : Class 8
PLEASE GIVE THE ANSWER ALONG WITH EXPLANTION

Ans 22:

AKSHAJ SRIVASTAVA from MOUNT LITERA ZEE SCHOOL, Kanpur
Class : Class 9
None of the given options are correct...

Ans 23:

Het Aryan from Podar International School , Pune
Class : Class 9
What the heck is going on.

Ans 24:

Avanish Pandey from St Francis school , Bilaspur
Class : Class 9
The correct answer will be(a)

Ans 25:

Amol Athawale from WoodRidge High, aurangabad
Class : Class 7
what does NA mean?

Ans 26:

Ashmi Narkar from The Shishukunj International School, Jhalaria Campus, Indore
Class : Class 9
EXPLAIN THIS PLEASEQuestion is incorrect but even after 30 (31) posts and queries no corrections...

Ans 27:

AANYA BARANWAL from KPS SCHOOL, bhilai
Class : Class 5
NA means no answer but what we had to do with it

Ans 28:

Anshuman D from MVM, Hyderabad
Class : Class 9
I understood that when I looked at the question itselfThe arrows are wrongly labelled

Ans 29:

Tay Wen Xuan from Inspiros International School, SHAH ALAM
Class : Class 9
Please explain what NA is... I don't understand

Ans 30:

SUHANI PANDA from DE PAUL SCHOOL, BERHAMPUR
Class : Class 8
What do you mean by 'NA'?

Ans 31:

Saanvi from Dehli Public School , Gurugram
Class : Class 4

Ans 32:

Abhijit from saint raphael h.s. school, indore
Class : Class 6

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Ashwak from Cambridge, Jalandhar
Subject :NSO    Class : Class 3

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Abhay Agarwal from St Francis School, Ghaziabad
Subject :NSO    Class : Class 8

Ans 1:

Ansuman Mohanty from O.D.M.Plubic School, Bhubaneswar
Class : Class 9

Ans 2:

Prisha Hemchandra Lokhande from NPS Whitefield, Bangalore, Bangalore
Class : Class 8
Is the question wrong...? the answer should be 33.0 m as speed=2d/t

Ans 3:

Amol Athawale from WoodRidge High, aurangabad
Class : Class 7
answer??????????????????????????????????????????????????????

Ans 4:

vatsal jay gandhi from new era senior secondary school, Vadodara
Class : Class 8
please explain this question.

Ans 5:

Bhramana Roy from Glendale Academy International, Hyderabad
Class : Class 8
Time taken to utter single syllable=1/5th of a sSpeed of sound in air=330m s^-1 or 330m/sso distance to reflecting surface=1/5 * 330 as that will give the distance=66.0mSo, distance to reflecting surface is 66.0m

Ans 6:

Kabir Kaushik from Elpro International School, Pune
Class : Class 8
Yes I think it is 33 also because it says it is an echo

Ans 7:

Nilanjana De from Delhi Public School North, Bengaluru
Class : Class 8
Can someone please explain this question?

Ans 8:

Abhay Agarwal from St Francis School, Ghaziabad
Class : Class 9
please explain this question

Ans 9:

Abhay Agarwal from St Francis School, Ghaziabad
Class : Class 9

Ans 10:

Darsh Singh from DAV, Talcher
Class : Class 9
Yes, it should be 33m as distance for an echo = s x t/2

Ans 11:

Akhil Budithi from Kennedy high the global school , Hyderabad
Class : Class 8
please explain this question.

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SAYAN MONDAL from BURDWAN CMS HIGH SCHOOL, BURDWAN
Subject :NSO    Class : Class 4

Ans 1:

LAVANYA DADHWAL from BLOOM PUBLIC SCHOOL, South West Delhi
Class : Class 9

Ans 2:

Krishna Kumari Nayak from Sai International school , Bhubaneswar
Class : Class 4
It is option B

Ans 3:

Kishore Kadiyala from NPS, BANGALORE
Class : Class 5

Ans 4:

Shreshta from Presidium, Ghaziabad
Class : Class 3
The answer which is given in the SOF application is wrong, because a frog has four life stages in his life stages, the correct answer must be moth because it has only three life stages in his life cycle and the parent and child do not look same,

Ans 5:

Nishchita from Gems Modern Academy , Dubai
Class : Class 8
The correct answer is C

Ans 6:

Mihika Talukdar from GARDEN HIGH, KOLKATA
Class : Class 4

Ans 7:

Rishita Sivakumar from Indian High School, Karama Dubai
Class : Class 9

Ans 8:

Rishita Sivakumar from Indian High School, Karama Dubai
Class : Class 9
the answer is d

Ans 9:

Harsh Sobti from the samhita academy, BLR
Class : Class 5

Ans 10:

Nakul Bhasker from National Public School Whitefield, Bangalore
Class : Class 5
THE ANSWER IS D AS FROG HAS 4 STAGES IN IT'S LIFE CYCLE ,BUT DOES NOT LOOK LIKE IT'S PARENT.WHILE,MOSQUITO HAS THREE SYTAGES IN IT'S LIFE CYCLE AND DOES NOT LOOK LIKE IT'S PARENT.I MADE THE SAME MISTAKE IN THE PREVIOUS TEST

Ans 11:

Manan thorat from Podar powai, Mumbai
Class : Class 4
Frog has 4 stages any of the answers are not correct

Ans 12:

Krish Karthik from freedom international school, Bangalore
Class : Class 5
but frog dosnt have just 3 life stages it has 4 so its not the answer

Ans 13:

Kishore Kadiyala from NPS, BANGALORE
Class : Class 5
the answer is d as the mosquito does not look like the parent , has 3 stages of life and lays eggs while frog does not look like the adult , has 4 stages of life and lays eggs .

Ans 14:

Akshat Pathak from DPS, Noida
Class : Class 4
correct answer is D

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Chiranjib kar from MOUNT LITERA ZEE SCHOOL, JAJPUR
Subject :NSO    Class : Class 5

Ans 1:

Swastik Srivastava from Baldwin Boys High School, Bangalore
Class : Class 5
ans is B

Ans 2:

S A ANIRUDH from S B O A SCHOOL AND JUNIOR COLLEGE, CHENNAI
Class : Class 5
Answer is C

Ans 3:

Bhavya from ABC, Delhi
Class : Class 7
super easy answer. it is 'A'

Ans 4:

Ajitesh Mishra from Vikas the concept school, Hyderabad
Class : Class 5
ANS A

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Chiranjib kar from MOUNT LITERA ZEE SCHOOL, JAJPUR
Subject :NSO    Class : Class 5

Ans 1:

Siddhanth Subramanian from Global Indian International School , Singapore
Class : Class 7
question????????????????

Ans 2:

Mishika shah from little angels high school, gwalior
Class : Class 9
The question is there in the solution please check

Ans 3:

Shreyan from Delhi Public School Bangalore East, Bangalore
Class : Class 5
what.

Ans 4:

Ayushree Barman from Sri Sri Academy, Kolkata
Class : Class 6
Where is the question? Isn't it very vague?

Ans 5:

Suvanjot Kaur from Springdale Senior School, Amritsar
Class : Class 5
The question is incomplete

Ans 6:

Shreyasi Padihary from National Public School East , Bengaluru
Class : Class 7
There is no question. What are we supposed to answer. It is incomplete

Ans 7:

Pratham Dave from GNS, Bangalore
Class : Class 7
No question?????????????????????????????

Ans 8:

Prisha Shah from Euroschool Airoli, Mumbai
Class : Class 6

Ans 9:

Dushyant Singh from Shri Ram Centennial School, Indore
Class : Class 6
see the solution the question is how many kharif crops are there. there are 6.

Ans 10:

Malav patel from Navrachana school sama , Vadodara
Class : Class 5

Ans 11:

Shourya Ganesh from The Green Acres Academy, Mumbai
Class : Class 9
What is the question?????????????????????????????????

Ans 12:

Shaanvi from ,
Class : Class 5
wrong question, incompleted question!!!!!!!!!!!!!????

Ans 13:

Agastya Tripathi from dps gurgaon, Gurgaon
Class : Class 4

Ans 14:

marika from VTS, Mumbai
Class : Class 4
There is no question and when I reported that error, it just came as "invalid"

Ans 15:

Samyuktha from Sri Chaitanya, Chennai
Class : Class 7
they did not give the question .

Ans 16:

Aditi DasBidhar from Treamis World School, Bengaluru
Class : Class 6
Where is the question!?

Ans 17:

Ridhan from SFS janakpuri, New Delhi
Class : Class 5
report error

Ans 18:

Ashwak from Cambridge, Jalandhar
Class : Class 9
question is incomplete

Ans 19:

Mahadevan from KV Rubber Board Kottayam, Kottayam
Class : Class 9
No relevant question

Ans 20:

Shreetej from Pearson public school, Pune
Class : Class 5
where is the question???????????????????????????

Ans 21:

Kanishk Mukherjee from BDM International, Kolkata
Class : Class 6

Ans 22:

Souradeepto Das Mandal from Hyderabad Public School, Hyderabad
Class : Class 7

Ans 23:

Arnav kaul from Chirec, Hyderabad
Class : Class 2

Ans 24:

Jasmine Kaur from Venkateshwar International School , New Delhi
Class : Class 5
There is no question!

Ans 25:

Ridhan from SFS janakpuri, New Delhi
Class : Class 5
The question is in the solution please check

Ans 26:

Kavin Karthick M from DPS bangalore east, Bengaluru
Class : Class 6
there is no proper question?

Ans 27:

Kashvi Rawat from Gear Innovative International School, Bengaluru
Class : Class 3
no question!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Ans 28:

Dushyant Singh from Shri Ram Centennial School, Indore
Class : Class 6

Ans 29:

Prisha Shah from Euroschool Airoli, Mumbai
Class : Class 6
If they don't give the complete question, we all will get it wrongSOF please look into this matter

Ans 30:

Dushyant Singh from Shri Ram Centennial School, Indore
Class : Class 6
no question.report error please

Ans 31:

SUARGHYA CHATTERJEE from INDIA INTERNATIONAL SCHOOL, asansol
Class : Class 5
WHERE IS THE QUESTION!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!??????????????????????????????????????????????????????????????????????????????????!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!???????????????????????????

Ans 32:

sarah pranav gothivarekar from Indian School Al Gubra, Muscat
Class : Class 4
where is the questionnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnn

Ans 33:

kushaal srinandan reddy bandi from bhartiya vidya bhavans public school vidhyasharam jublee hills , HYDERABAD
Class : Class 6
this is not a question

Ans 34:

Reynah Gupta from The Shri Ram School, Aravali, Gurugram
Class : Class 10
question is incomplete

Ans 35:

Etash M B from Sri Sri Ravi Shankar Vidya Mandir, Bengaluru
Class : Class 5
where the h

Ans 36:

Swastik Srivastava from Baldwin Boys High School, Bangalore
Class : Class 5
where is the question ??????????????????

Ans 37:

Chandradeep Kumar from ,
Class : Class 5

Post Your Answer

Shreenath Rajesh Nair from J H A S V Surat, Surat
Subject :NSO    Class : Class 8

Ans 1:

vrrsekar from INDIAN SCHOOL SUR OMAN, sur
Class : Class 6
Thank You Mr.Rahul

Ans 2:

S V Harini from Vailankanni public school , Krishnagiri
Class : Class 8
explain please....

Ans 3:

Rahul Jha from Delhi Public School BN, Bengaluru
Class : Class 8
Key Idea: Phenomenon of reflection is independent of medium. The deviation produced by combination of two plane mirrors is δ=2π−2θ =2π−2×π2 (θ=90o) ⇒ δ=π=180o. Hence, total deviation in incident ray is180o

Ans 4:

Shaman Amin from SDM school, Mangalore
Class : Class 10
But wont the refraction of light in water play a role?

Ans 5:

ANUSHKA SHARMA from CAMBRIDGE COURT WORLD SCHOOL, JAIPUR
Class : Class 8
Please explain how the deviation has happened at 180 degrees

Ans 6:

Khushi Chaudhuri from Step By step, Noida
Class : Class 8
Why does the deviation happen to be 180 degrees

Ans 7:

NAMAN HARITASH from DPS DLF CITY, GURGAON
Class : Class 9
but due to water refraction will also take place

Ans 8:

neelu desai from bombay scottish, mumbai
Class : Class 8

Post Your Answer

H R Kanish from Chennai public school, Chennai
Subject :NSO    Class : Class 6

Ans 1:

Kushal from Chirec, Hyderabad
Class : Class 7

Ans 2:

Advait talnikar from Dhruv Global School, Sangamner
Class : Class 6
Answer can be A

Ans 3:

Alyassa Pradhan from St Josephs Convent Higher Secondary School, Sambalpur
Class : Class 4
D

Ans 4:

Ayush malik from JAI KRAISHANA INTERNATIONAL SCHOOL, Rohtak
Class : Class 6
D

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H R Kanish from Chennai public school, Chennai
Subject :NSO    Class : Class 6

Ans 1:

Subhang Deep Sahu from Narayana CO Kadugodi Bangalore, Bangalore
Class : Class 8

Ans 2:

Pranjal Chaudhari from St Aloysius Convent High School, Bhusawal
Class : Class 6
pls explain how the answer is B

Ans 3:

BHAVYA JHA from GLOBAL CITY INTERNATIONAL SCHOOL, BANGALORE
Class : Class 6
According to me D is the correct answer

Ans 4:

PS Gour from Chirec international schoo The best 30 years and beyond, Hyderabad
Class : Class 7
according to me D is correct

Ans 5:

Ashi Goyal from Sacred heart convent school,raikot road,barnala, punjab
Class : Class 6

Ans 6:

SJ HARITHA from PSNLO, BENGALURU
Class : Class 10

Ans 7:

Kushal from Chirec, Hyderabad
Class : Class 7

Ans 8:

Shantaneel Sarkar from Delhi Public School, Nagpur
Class : Class 6
According to me D is the correct answer as a wire should be connected from a terminal of a battery to the - terminal of the battery for longer stay of electric circuit, and this rule is satisfied by the circuit shown in option D.

Ans 9:

Kaustav Bhowal from Julien Day School, Kolkata
Class : Class 10
D is the correct answer.

Ans 10:

Aarav Srivastav from DWPS , Noida Extension
Class : Class 7

Ans 11:

Aarav Srivastav from DWPS , Noida Extension
Class : Class 7

Ans 12:

SUSHEELA KAMLENDRA from FLORENCE ACADEMY, BENGALURU
Class : Class 6

Ans 13:

Naitik Mundra from International School Rheintal, Buchs Sankt Gallen
Class : Class 9
Answer is B

Ans 14:

Shourya Kumar from Delhi Public School Noida, Noida
Class : Class 9

Ans 15:

Harsh Kedawat from Apeejay, Noida
Class : Class 8
pls explain how the answer is B

Ans 16:

Ayush malik from JAI KRAISHANA INTERNATIONAL SCHOOL, Rohtak
Class : Class 6
D

Ans 17:

Aayush Reddy Bomidika from Delhi Public School Nacharam, Hyderabad
Class : Class 9
D is definitely the correct answer

Ans 18:

Kshitij from Sams, Bangalore
Class : Class 6
pls explain how the answer is bBTW: your answer is correct

Ans 19:

Hemanshu VM from Sri Kumaran Public School, Bangalore
Class : Class 6
the answer is D

Ans 20:

Naitik Mundra from International School Rheintal, Buchs Sankt Gallen
Class : Class 9
When a battery is constructed such that all the positive terminal of the cells are connected to a same point and all the negative terminals of the cells are connected to another point then the grouping of cells in this manner is called the Parallel Grouping of cells. The two end terminals of the construct where all the positive and negative terminals of the cells are connected act as the corresponding terminal of the battery.

Ans 21:

Pranav Kartik from DPS sushant lok , Gurgaon
Class : Class 3
D is the correct answer

Ans 22:

Shabd Mehta from Shabd Mehta, Agra
Class : Class 7
How many times will olympiad confuse us its D

Ans 23:

SOURADEEP SHARMILA MANDAL from KENDRIYA VIDYALAYA IISC, Bengaluru
Class : Class 7

Ans 24:

Smita De from Bishop Cotton Girls School, BANGALORE
Class : Class 5

Ans 25:

MAHI ABHIJIT CHAUDHARI from Sentia The Global School, HYDERABAD
Class : Class 6
Answer B is the correct answer as the question specified for the arrangement which will allow the bulb to stay lighted for the longest possible time. Option B is connected as One cell as per the circuit (all connections are in parallel), While Option D is in Series (in case of failure of one cell, the circuit will not work as the current will not pass through the cell)

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Pranjal Chaudhari from St Aloysius Convent High School, Bhusawal
Subject :NSO    Class : Class 6

Ans 1:

Subhang Deep Sahu from Narayana CO Kadugodi Bangalore, Bangalore
Class : Class 8
it is cccccccccccccccccccccc!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Ans 2:

Ishita Pandey from The Samhita academy, Bengaluru
Class : Class 7
I agree with A Ramakrishna's point

Ans 3:

Rithvik Chandra from Greenwood High School, Bangalore
Class : Class 6
it is C, YARNS are woven not FIBRES.

Ans 4:

Aarav Malviya from INDIAN SCHOOL SALALAH, SALALAH
Class : Class 7
thanks for the answer

Ans 5:

nimay gupta from Shiv Nadar School, noida
Class : Class 8

Ans 6:

AARNA Kapse from The swaminarayan school, Nagpur
Class : Class 7
Ans = C

Ans 7:

Aarushi Upadhyayula from The Cambridge International School, Bengaluru
Class : Class 7
The answer would be C. If you read the question carefully, it says, "Weaving is done by interlacing two sets of FIBRES at right angles." There are two things wrong with this: 1) They need not be interlaced at right angles. 2) The question clearly says 'fibres', not 'yarns' as it should be. Therefore, the answer is C.

Ans 8:

PRISHA WAGH from G D SOMANI MEMORIAL SCHOOL, MUMBAI
Class : Class 7
answer is B

Ans 9:

Ahana Mandal from Delhi Public School Asansol , Asansol
Class : Class 6
Very good and tricky question

Ans 10:

Animesh Jain from DPS, Bengaluru
Class : Class 10

Ans 11:

Pranav Kartik from DPS sushant lok , Gurgaon
Class : Class 3
It is C only!!!

Ans 12:

shrawan azad from DPS VASANTKUNJ NEW DELHI, New Delhi
Class : Class 4
The answer is B

Ans 13:

Sarah Ishika Dowerah from Delhi Public School, Numaligarh
Class : Class 8
I think the is option B

Ans 14:

Sarah Ishika Dowerah from Delhi Public School, Numaligarh
Class : Class 8

Ans 15:

Dheeraj Thriyambak M from Sri Sankara Senior Secondary School Adyar, Chennai
Class : Class 6
Answer is C. ttraj's point is true.

Ans 16:

Pragnay Priyadarshi from Quantum Leap School, HYDERABAD
Class : Class 7

Ans 17:

Kaushik Bhattacharya from LVIS, NOIDA
Class : Class 7
There seems to be an error in this. We feel that it is B

Ans 18:

A Ramakrishna Rao from D A V Public School. Unit 8. Bhubaneswar , Bhubaneswar
Class : Class 6
the correct answer is c as it is given weaving fibres not weaving yarn.read the question carefully.

Ans 19:

Pratheek from Null, Null
Class : Class 4
It is C!!!!! Be careful!!!!!!!!!

Ans 20:

Nandini from Ins, Pune
Class : Class 8

Ans 21:

anika from St Joseph sen sec school Mahoba, Kulpahar
Class : Class 5
its an error as weaving is done as sam eas decribed in statement 2 i think answer should be ...............BBBBB......................

Ans 22:

Parth Kadam from Pawar Public School , Nanded City, Pune
Class : Class 8
The answer is B

Ans 23:

ttraj from KV IIT, Chennai, Chennai
Class : Class 3
Answer is C. As you can't weave fibres.read the question properly!!!!!!!!!!!!!!!

Ans 24:

AUSTIN from Viswajyothi CMI Public School, Chowara
Class : Class 7
the answer is C because YARNS are woven not FIBRES

Ans 25:

Aditya Korke from Ekya, Bengaluru
Class : Class 6
Both statements are true

Ans 26:

Admin fly from Ddssxxx, Ax
Class : Class 1
there is an error. the answer is C

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