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

Ans 1:

Aarush Pandya from Inventure Academy, Bangalore
Class : Class 4
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 2:

Vibhor Mudgal from GBN School, Faridabad
Class : Class 4

Ans 3: (Master Answer)

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

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

Ans 1:

Shreyas Ubaley from M G M Senior Secondary school Sec-6, Bhilai(C.G)
Class : Class 3
A

Ans 2:

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

Ans 3:

SAMRIDDHA PANDA from MONFORT SENIOR SECONDARY SCHOOL, BARUIPYR
Class : Class 3

Ans 4:

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:

Ashmi Narkar from Shishukunj International School , Indore
Class : Class 3
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 2:

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

Ans 3:

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

Ans 4:

Abhijato Chatterjee from Presidium, kOLKATA
Class : Class 5
why?

Ans 5:

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

Ans 6:

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 7:

TanishaNath from Clarence Public school Bangalore, Bangalore
Class : Class 5
why

Ans 8:

Ashmi Narkar from Shishukunj International School , Indore
Class : Class 3

Ans 9:

Ashmi Narkar from Shishukunj International School , Indore
Class : Class 3
ANS should be a

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

Ans 1:

mamatha from Gyan Ganga International School, Pune
Class : Class 3
C

Ans 2: (Master Answer)

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

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

Ans 1:

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

Ans 2:

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

Ans 3:

Ashee Srivastava from APEEJAY SCHOOL NOIDA , NOIDA
Class : Class 5
But a is the answer .

Ans 4:

Gauri Singh from St Johns School Marhauli, Varanasi
Class : Class 7
The correct answer is a but i did it wrong... (i did ans C)

Ans 5:

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

Ans 6:

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 7:

Neelesh Dutta from Innocent Hearts School, JALANDHAR
Class : Class 5

Ans 8:

Preeti tanwar from DON BOSCO ACADEMY, Patna
Class : Class 6
c

Ans 9:

SOUMYARAJ ROY from DELHI PUBLIC SCHOOL, DHANBAD
Class : Class 5
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 10:

Ashee Srivastava from APEEJAY SCHOOL NOIDA , NOIDA
Class : Class 5
I did it c but according to SOF, it is a.

Ans 11:

Riya from Bhavan Vidyalaya, Chandigarh
Class : Class 4
good question sligjhtly tricky

Ans 12:

Syed zubair from Federal public school, Bangalore
Class : Class 6
Answer a

Ans 13:

legendary ninja from dps gurgaon, Gurgaon
Class : Class 6

Ans 14:

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

Ans 15:

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

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

Ans 1:

Niketu Dave from JAMNABAI NARSEE SCHOOL, Gandhinagar
Class : Class 6
It would be conducted on either 9th or 23rd November. Ask your school Olympiad Coordinator.

Ans 2:

Niketu Dave from JAMNABAI NARSEE SCHOOL, Gandhinagar
Class : Class 6
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 8
base turns yellow with methyl orange.

Ans 2:

Anurag Peddi from Niraj International School, Hyderabad
Class : Class 8
I think the answer is C. If it contains H+ ions less than OH- ions, the substance is a base.

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

Ans 1:

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

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

Ans 1:

atharv from bluebells international, delhi
Class : Class 4

Ans 2:

Samaira from Global Indian International School, Bangalore
Class : Class 4
I don’t understand how can d be the answer

Ans 3:

avighna wuthoo from The bishop school , PUNE
Class : Class 5

Ans 4:

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

Ans 5:

lavanya from bcm chd road, Ludhiana
Class : Class 4

Ans 6:

Harishchandra C from narayana e techno school, chennai
Class : Class 4
THEY CAN TELL THAT WHICH IS NOT MIRROR IMAGE OR MIRROR IMAGE

Ans 7:

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

Ans 8:

Ahaan Mittal from Primus Public School, Bengaluru
Class : Class 4
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 9:

Harsh Sobti from ABC, BLR
Class : Class 4
answer can be b

Ans 10:

SRISANTH from Edify, Tirupathi
Class : Class 4
A is almost a symmetrical figure

Ans 11:

Jordan Cole from NCS Arakkonam, Arakkonam
Class : Class 3

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

Ans 1:

Mahadevan from KV Rubber Board Kottayam, Kottayam
Class : Class 4
D is the answer.

Ans 2:

Maniska nayak from KIIT international, Bhubaneswar
Class : Class 4
filtration should be done when there are floating particles. here it should be decantation.

Ans 3:

Samaira from Global Indian International School, Bangalore
Class : Class 4
There is a mistake in the question..........the option a and b are repeatedI reported an error on this...

Ans 4:

ANURADHA NAIR from SANDEEPANI VIDYA NIKETHAN SCHOOL, Thrissur
Class : Class 4
I AGREE THERE IS A MISTAKE BUT THE BEST METHOD IS FILTRATION

Ans 5:

ANURADHA NAIR from SANDEEPANI VIDYA NIKETHAN SCHOOL, Thrissur
Class : Class 4
C IS THE ANSWER

Ans 6:

Harish Divakar from Chennai public school global school, Chennai
Class : Class 4
I think evaporation could solve the problem

Ans 7:

Aajani Datta from The Samhita Academy, Bangalore
Class : Class 4

Ans 8:

BHAVESH PATRA from MOTHERS PUBLIC SCHOOL, BHUBANESWAR
Class : Class 5
Muddy water cannot be clarified by filtration as it contains fine particles such as clay .Sedimentation followed by decantation is the more suitable process for it.

Ans 9:

Ishit Rai from EUROSCHOOL THANE, THANE WEST
Class : Class 4
Can you tell the answer of this question

Ans 10:

Mannat Verma from Vivek High School , Chandigarh
Class : Class 5
?????????????????????????????????

Ans 11:

Samaira from Global Indian International School, Bangalore
Class : Class 4

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