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Pratibha from Vaels billabong international, Chennai
Subject :NSO    Class : Class 4

Ans 1:

Kriti Bhonsale from Delhi Public School, Bengaluru
Class : Class 5
C

Ans 2:

Aarush Pandya from Inventure Academy, Bangalore
Class : Class 8
The correct answer is C because if organism X wipes out all tadpoles in the community, then water insects' population grows with nothing to eat them. The small fish die because they have nothing to eat, and soon the big fish die too.

Ans 3:

Mihika Talukdar from GARDEN HIGH, KOLKATA
Class : Class 4

Ans 4:

Abhigyan Sinha from Podar International School, Powai, Mumbai, Mumbai
Class : Class 7
correct answer is C

Ans 5: (Master Answer)

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

Ans 6:

Vibhor Mudgal from GBN School, Faridabad
Class : Class 4

Ans 7:

Manjeet Prajapati from Saint Xavier College BHEL Jhansi , Jhansi
Class : Class 4
In the given food chain, tadpole feeds on water insect and in turn is eaten by small fish. If population of tadpole will decline with time then small fish population will also decrease as former is the food of later. On the other hand, water insect population will be positively affected because in the absence of predator prey population reproduces and flourishes.

Ans 8:

Gurnoor from Chitkara International School, Chandigarh
Class : Class 5
ans is c

Ans 9:

Ashwak from Cambridge, Jalandhar
Class : Class 9
Aarush , there will be not enough plants to feed so many water insects . So, at a particular time all plants will finish . So , there will be nothing left for the water insects so they will also die !

Ans 10:

Rishaan Dixit from DPS Noida, Noida
Class : Class 5
cccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccc

Ans 11:

Priyanshi from Delhi Public School, Gurugram
Class : Class 4
the correct answer is C

Ans 12:

Manan thorat from Podar powai, Mumbai
Class : Class 4
The answer is C

Ans 13:

Raashid Sarfraz from IIPS, Riyadh
Class : Class 6

Ans 14:

k tagore from montessori school, KURNOOL
Class : Class 3
The correct answer is c

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AKSHITA.KRISHNAN from DPS Noida, Noida
Subject :NSO    Class : Class 3

Ans 1:

Abhijay Saha from Delhi Public School, Megacity, Kolkata
Class : Class 3
We Don't know that plants breath oxygen in night

Ans 2:

from M G M Senior Secondary school Sec-6,
Class : Class 5
A

Ans 3:

Advika Narkar from The Shishukunj International School, Jhalaria Campus, Indore
Class : Class 8
Sorry ,answer is A .I gave wrong explanation why .You have told arerespectively, so gas 1 is carbon dioxide and gas 2 is oxygen.You have given the order as 1 and 2 i.e. carbon dioxide and oxygen.So ,we will say it as 2 and 1 i.e oxygen and carbon dioxide .Hence answer is A.

Ans 4:

Soham from Golden Earth Global School, Sangrur, Sangrur
Class : Class 3
A

Ans 5:

SAMRIDDHA PANDA from ST. MONFORT'S SENIOR SECONDARY SCHOOL, BARUIPUR
Class : Class 7

Ans 6:

Advika Narkar from The Shishukunj International School, Jhalaria Campus, Indore
Class : Class 8
ans is A as the order of gases will not change

Ans 7:

SARTHAK.SHUKLA from Delhi Public School, Noida, Noida
Class : Class 3
Answer is D because at night plants take in oxygen and give out carbon-di-oxide whereas we humans always take in oxygen and give out carbon-di-oxide.

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AKSHITA.KRISHNAN from DPS Noida, Noida
Subject :NSO    Class : Class 3

Ans 1:

Gaurang Mahesh Mahamunkar from Lodha World School Thane, Thane
Class : Class 4
Figure A can be folded horizontally, figure B can be folded diagonally, figure D can be folded vertically to get their mirror images whereas figure C is asymmetric, so the odd one out is figure C

Ans 2:

Ashmi Narkar from The Shishukunj International School, Jhalaria Campus, Indore
Class : Class 9
ANS should be a

Ans 3:

akshitha from Euroschool, Bengaluru
Class : Class 3
i cant understand the second question c] or b]?

Ans 4:

SARTHAK.SHUKLA from Delhi Public School, Noida, Noida
Class : Class 3
Answer is asymmetrical figure, because all the other figures are symmetrical.

Ans 5:

Ananya D from Sacred Heart School, Thane
Class : Class 8

Ans 6:

Shivani Shivu Singh from Pawar Public School Chandivili , Mumbai
Class : Class 8

Ans 7:

Ashmi Narkar from The Shishukunj International School, Jhalaria Campus, Indore
Class : Class 9
The images given in Options A, B and D are symmetrical images. That means all three have at least one line of symmetry. Line of symmetry is any line drawn through the image which divides the image into two exactly equal parts, and these parts are mirror images of each other. A.The part above the red line (line of symmetry) and the 7part below the red line are mirror images of each other.7410`1 B.The parts on both sides of the red line (line of symmetry) are mirror images of each other. C.There can be no line of symmetry that can divide this image into two equal parts which are mirror images of each other. D.The part on the left side of the red line (line of symmetry) and the part on the right side of the red line are mirror images of each other. Hence, Option C is the odd one out.

Ans 8:

Shivani Shivu Singh from Pawar Public School Chandivili , Mumbai
Class : Class 8

Ans 9:

BRIHA PURI from CAMBRIDGE PUBLIC SCHOOL, BANGALORE
Class : Class 3
understood

Ans 10:

Tanisha Nath from Clarence Public school Bangalore, Bengaluru
Class : Class 9
why

Ans 11:

Abhijato Chatterjee from Bharatiya Vidya Bhavan, Kolkata, kOLKATA
Class : Class 6
why?

Ans 12:

Keisha Raj from SVIS Kandivali, Mumbai
Class : Class 6

Ans 13:

Ashmi Narkar from The Shishukunj International School, Jhalaria Campus, Indore
Class : Class 9

Ans 14:

BRIHA PURI from CAMBRIDGE PUBLIC SCHOOL, BANGALORE
Class : Class 3
nonsense question

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Mridul Jain from Shishukunj International School Indore, Indore
Subject :NSO    Class : Class 4

Ans 1:

SWARIT JAIN from DPS Greater Noida, GREATER NOIDA
Class : Class 9
C

Ans 2:

Vivaan from Rustomjee Cambridge International School and Junior College, Mumbai
Class : Class 6
C

Ans 3:

Goutham from lt, Chennai
Class : Class 4
I. This is so EZ.t can be c as N is on the top and S is down plus when the north recives cold it is hot in the south and when the south is cold it is hot in the north

Ans 4:

ibrahim akhil pathan from kaka's international school, pune
Class : Class 4
explain please

Ans 5:

Pranav Verma from DPS Pal Road , Jodhpur
Class : Class 4
D is correct

Ans 6:

Abhigyan Sinha from Podar International School, Powai, Mumbai, Mumbai
Class : Class 7
correct answer is C

Ans 7:

Aarvi Gosai from The New Tulip International School, Ahemdabad
Class : Class 4
no u DUMMIES! winter should be on the east side of the earth and summer on the west and Goutham this question is sooooo WRONG! and ur wrong Goutham

Ans 8:

Shashank Reddy from Gyan Ganga International School, Pune
Class : Class 5
C

Ans 9:

Ashwak from Cambridge, Jalandhar
Class : Class 9
The answer is C

Ans 10:

Shrinikethan S from Padma Seshadri Bala Bhavan Senior Secondary School, K. K. Nagar,, Chennai
Class : Class 5
how do you all know the correct answer is 'C' when everything seems correct.

Ans 11:

somesh from Centre point katol road, Nagpur
Class : Class 6
d

Ans 12: (Master Answer)

Admin from revisewise, Noida
Class : Class 1

The correct answer is C.


Ans 13:

XXX from SVM, Bangalore
Class : Class 5
please explain how is it c?

Ans 14:

Soumyajit Das from Hariyana Vidya Mandir, NORTH 24 PARGANAS
Class : Class 8
please give explanation Admin.

Ans 15:

Anwita from Gea, Mumbai
Class : Class 4
it also can be d explain how please admin cant understand

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Supreet Birdi from Global Indian International School, Bangalore
Subject :NSO    Class : Class 5

Ans 1:

Rohan TR from Sri Aurobindo memorial school, Bangalore
Class : Class 6
Soumya raj is correct

Ans 2:

Ashee Srivastava from APEEJAY SCHOOL NOIDA , NOIDA
Class : Class 7
But a is the answer .

Ans 3:

Advaith from National Public School, HSR Layout , Bengaluru
Class : Class 8
The question is asking to select the incorrect question, but option C is correct and option A is wrong so A is the correct answer

Ans 4:

Ayushmaan from D, B
Class : Class 5
Nice question

Ans 5:

Niveideeta Cour from Suncity World School, Gurgaon
Class : Class 5

Ans 6:

Gauri Singh from St Johns School Marhauli, Varanasi
Class : Class 8
The correct answer is a but i did it wrong... (i did ans C)

Ans 7:

anita from Manan Vidya Ranchi, Ranchi
Class : Class 4
D

Ans 8:

Anantjit Chander from Apeejay School, Sector 15, Faridabad
Class : Class 10
Yes, it is true, we can compare the movement to the joint mentioned as "P" with that of a joystick. It is a ball-socket joint, and it is found in the shoulders and the hips.

Ans 9:

Pratham Gupta from P G Garogdia, Mumbai
Class : Class 5
Correct answer is C

Ans 10:

Niveideeta Cour from Suncity World School, Gurgaon
Class : Class 5
The correct answer is A) according to SOF

Ans 11:

Rimi from TLISK, pune
Class : Class 9
its a

Ans 12:

Biju Pappachan from Rkc , Raipur
Class : Class 1
The correct ans is A.

Ans 13:

Ashwak from Cambridge, Jalandhar
Class : Class 9
It's simple

Ans 14:

Riya from Bhavan Vidyalaya, Chandigarh
Class : Class 8
good question sligjhtly tricky

Ans 15:

bharati nath from Springdale high school, Kalyani
Class : Class 6

Ans 16:

Ashwak from Cambridge, Jalandhar
Class : Class 9

Ans 17:

Syeda Safina Taj from Federal public school, Bengaluru
Class : Class 4
Answer a

Ans 18:

Preeti tanwar from DON BOSCO ACADEMY, Patna
Class : Class 9
c

Ans 19:

Devasree from Presidium, Ghaziabad
Class : Class 10
Soumya raj is correct answer should be c as ball and socket joint is only found in legs and arms and it is definitely not found in the skull .

Ans 20:

KONDURU TEJESH from Sri chaitanya international school, Bangalore
Class : Class 4
p is not pivot joint but a ball and socket joint but according to me c is the correct ans

Ans 21:

Yashasvika from Euro World School, Sri Ganganagar
Class : Class 5
the answer is a but i did it c

Ans 22:

Prerona Chatterjee from Delhi Public School North Kolkata, Kolkata
Class : Class 5
actually the picture P is wrong . they want to express it as pivot joint.

Ans 23:

Ashwak from Cambridge, Jalandhar
Class : Class 9
I think the answer is A

Ans 24:

Goutham Ram from Lecole' Chempaka International, Trivandrum
Class : Class 5

Ans 25:

Mathamagician from BGSNPS, Bengaluru
Class : Class 6
EASY. It is a). FOund it very quickly. I wonder why many of you put c)

Ans 26:

Pratham Dave from GNS, Bangalore
Class : Class 7
All of them are incorrect so the answer is D

Ans 27:

Agastya Tripathi from dps gurgaon, Gurgaon
Class : Class 4

Ans 28:

Rishik De Sarkar from Delhi Public School Gurgaon, Gurgaon
Class : Class 7
WTH?

Ans 29:

Smita De from Bishop Cotton Girls School, BANGALORE
Class : Class 5
correct answer is supposed to be C. But according to SOF it is A.

Ans 30:

Ashee Srivastava from APEEJAY SCHOOL NOIDA , NOIDA
Class : Class 7
I did it c but according to SOF, it is a.

Ans 31:

Soumyaraj Roy from Kendriya Vidyalaya , Thiruvananthapuram
Class : Class 7
SOF is wrong . The answer should be C as Ball and socket joint is only found in arms and legs . It cannot come in the skull . Smita De is also absolutely right .

Ans 32:

marika from VTS, Mumbai
Class : Class 4
cool question

Ans 33:

Rimi from TLISK, pune
Class : Class 9
OH mene to d kiya tab laga ki sab wrong the.oh my god now acinfusing yar

Ans 34:

Praket Tejas from Delhi Public School Indira Nagar Lucknow, Lucknow
Class : Class 4
iojkbn

Ans 35:

harry potter from Hogwarts school of witchcraft and wizardry , london
Class : Class 5
but read the question... you have to select the incorrect ans

Ans 36:

Arav Gupta from Delhi Public School Gurgaon, Gurgaon
Class : Class 8
And the question said to find the incorrect option! So a.

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Harini senthilkumar from Maharishi vidhya mandir, Chennai
Subject :NSO    Class : Class 5

Ans 1:

Shivam Dave from JAMNABAI NARSEE SCHOOL, Gandhinagar
Class : Class 7
It would be conducted on either 9th or 23rd November. Ask your school Olympiad Coordinator.

Ans 2:

Shivam Dave from JAMNABAI NARSEE SCHOOL, Gandhinagar
Class : Class 7
It would be conducted on either 9th or 23rd November. Ask your school Olympiad Coordinator.

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Achintya k j from KENDRIYA VIDYALAYA GOLE MARKET, NEW DELHI
Subject :NSO    Class : Class 7

Ans 1:

Anurag peddi from Niraj International School, Hyderabad
Class : Class 9
base turns yellow with methyl orange.

Ans 2:

Anurag peddi from Niraj International School, Hyderabad
Class : Class 9
I think the answer is C. If it contains H+ ions less than OH- ions, the substance is a base.

Ans 3:

Shaurya Veer from Army Public School ASC C and C , Bangalore
Class : Class 10
i agree@anurag

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John Calvin from vaels billabong, kottiwakkam
Subject :NSO    Class : Class 5

Ans 1:

Mahadevan from KV Rubber Board Kottayam, Kottayam
Class : Class 9
answer is C

Ans 2:

Hari Govind from Delhi Public School Chandigarh , Chandigarh
Class : Class 6
d

Ans 3:

Rishi from Deens Academy, BENGALURU
Class : Class 9
mo the film will pop so ans is d

Ans 4:

Vihaan malhotra from The shriram school, New delhi
Class : Class 5
C

Ans 5:

AARAV AGRAWAL from BIRLA DIVYA JYOTI, SILIGURI
Class : Class 8
a b c d e f g h i j k l m n o p q r s t u v w x y z.......... Confusing .......... z y x w v u t s r q p o n m l k j i h g f e d c b a

Ans 6:

Srishti Verma from Basava International School, New delhi
Class : Class 5

Ans 7:

Durva Shah from SSRVM, Ahmedabad
Class : Class 6
Option DThe film of soapy water will burst as the water will get evaporated........

Ans 8:

Sri Susrutha Chowdary Karnati from Vibgyor high , Bangalore
Class : Class 8
ANSWER IS D

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Shruti Rajshree from NPS Indiranagar, Bengaluru
Subject :NSO    Class : Class 4

Ans 1:

TARA NAUTIYAL from CONVENT OF JESUS AND MARY, DEHRADUN
Class : Class 4
A is not a mirror image

Ans 2:

Soorya Tej R from Delhi Public School, Hyderabad
Class : Class 6

Ans 3:

lavanya from bcm chd road, Ludhiana
Class : Class 5

Ans 4:

Yajur Nag from dps vk, delhi
Class : Class 5

Ans 5:

Jordan Cole from NCS Arakkonam, Arakkonam
Class : Class 3

Ans 6:

Jeevi Ran from THANGAM MOUNT litera zee school at AYOTHIYAPATTINAM , Salem
Class : Class 6
A

Ans 7:

Harishchandra C from narayana e techno school, chennai
Class : Class 5
THEY CAN TELL THAT WHICH IS NOT MIRROR IMAGE OR MIRROR IMAGE

Ans 8:

Shreeya Mangla from ASN Senior Secondary School, New Delhi
Class : Class 9

Ans 9:

Arnav Thombare from DAV Public School Thane, Thane
Class : Class 4

Ans 10:

Advika Narkar from The Shishukunj International School, Jhalaria Campus, Indore
Class : Class 8
Yes A is not a mirror image SOF change answer

Ans 11:

Jeet Anandani from Pawar public school, Mumbai
Class : Class 4
aa

Ans 12:

Jeet Anandani from Pawar public school, Mumbai
Class : Class 4
a

Ans 13:

Aryan Swain from Kendriya Vidyalaya, Barimul, Kendrapara
Class : Class 5
A is not a mirror image. @SOF Please change the answer.

Ans 14:

Harsh Sobti from the samhita academy, BLR
Class : Class 5
answer can be b

Ans 15:

SRISANTH from Edify, Tirupathi
Class : Class 5
A is almost a symmetrical figure

Ans 16:

Raghav from DPS Gurgaon, Gurgaon
Class : Class 5
A

Ans 17:

avighna wuthoo from The bishop school , PUNE
Class : Class 7

Ans 18:

Ahaan Mittal from Primus Public School, Bengaluru
Class : Class 8
They were trying to show the mirror image but OptionA is not shown correctly as the mirror image. Hence the confusion. between A and D.

Ans 19:

Alisha from Delhi Public School , bopal, Ahemdabad
Class : Class 8
A IS NOT A MIRROR IMAGE!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Ans 20:

Shreeya Mangla from ASN Senior Secondary School, New Delhi
Class : Class 9

Ans 21:

Ava from trio, bangalore
Class : Class 2
C

Ans 22:

Rishik De Sarkar from Delhi Public School Gurgaon, Gurgaon
Class : Class 7
A

Ans 23:

Samaira from Global Indian International School, Bangalore
Class : Class 8
I don’t understand how can d be the answer

Ans 24:

Sashriti Das from Delhi Public School Bangalore North, Bangalore
Class : Class 5
I Don't Understand?

Ans 25:

Advika Narkar from The Shishukunj International School, Jhalaria Campus, Indore
Class : Class 8
In A the mirror image of B is wrong and in D it is not a mirror image.In fact A and D both are not mirror images .Hence, the confusion between A and D

Ans 26:

Adit Aggarwal from Vibgyor High, Bengaluru
Class : Class 5
A is not a mirror image. Requesting SOF to correct the same.

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DIYA NOBY from VISWAJYOTHI CMI PUBLIC SCHOOL, ANGAMALY
Subject :NSO    Class : Class 5

Ans 1:

Preeti tanwar from DON BOSCO ACADEMY, Patna
Class : Class 9
Second class lever

Ans 2:

Preeti tanwar from DON BOSCO ACADEMY, Patna
Class : Class 9
Second class lever

Ans 3:

Syeda Safina Taj from Federal public school, Bengaluru
Class : Class 4
Second lever

Ans 4:

Aryan Sirohi from Mount LItera Zee School, Bangalore
Class : Class 8
Second class lever.

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