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Bibhu biswajit Jena from Kendriya Vidyalaya, Kendrapara
Subject :NSO    Class : Class 8

Ans 1:

ketaki kul from sanskriti school, Pune
Class : Class 10
Mirage is an optical illusion caused due to refraction of light.

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AKSHITA DIXIT from R K SARDA VIDYA MANDIR, RAIPUR
Subject :NSO    Class : Class 6

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AKSHITA DIXIT from R K SARDA VIDYA MANDIR, RAIPUR
Subject :NSO    Class : Class 6

Ans 1:

AKSHITA DIXIT from R K SARDA VIDYA MANDIR, RAIPUR
Class : Class 6

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AKSHITA DIXIT from R K SARDA VIDYA MANDIR, RAIPUR
Subject :NSO    Class : Class 6

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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 5
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: (Master Answer)

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

Ans 3:

Snow White from Le Setea , Paris
Class : Class 4
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 4:

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 5:

Raashid Sarfraz from IIPS, Riyadh
Class : Class 4

Ans 6:

Vibhor Mudgal from GBN School, Faridabad
Class : Class 4

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

Ans 1:

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

Ans 2:

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

Ans 3:

ASHMI Narkar from Vibgyor High Airoli, Navi Mumbai
Class : Class 4
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:

SAMRIDDHA PANDA from MONFORT SENIOR SECONDARY SCHOOL, BARUIPUR
Class : Class 4

Ans 5:

ASHMI Narkar from Vibgyor High Airoli, Navi Mumbai
Class : Class 4
ans is A as the order of gases will not change

Ans 6:

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
ANS should be a

Ans 2:

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

Ans 3:

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

Ans 4:

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 5:

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 6:

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

Ans 7:

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

Ans 8:

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

Ans 9:

Deepak D L from Sacred Heart School, Thane
Class : Class 4

Ans 10:

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

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

Ans 1:

Vivaan from Thakur public school, Mumbai
Class : Class 4
C

Ans 2:

Shreshta from Presidium, Ghaziabad
Class : Class 3
DDDDDDDDDDDDDD

Ans 3:

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

Ans 4:

Shrinikethan S from Padma Seshadri Bala Bhavan Senior Secondary School, K. K. Nagar,, Chennai
Class : Class 4
how do you all know the correct answer is 'C' when everything seems correct.

Ans 5:

SWARIT JAIN from TSMS NOIDA, GREATER NOIDA
Class : Class 4
C

Ans 6:

Snow White from Le Setea , Paris
Class : Class 4
The answer is C

Ans 7: (Master Answer)

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

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

Ans 1:

marika from VTS, Mumbai
Class : Class 4
cool question

Ans 2:

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

Ans 3:

Ashee Srivastava from APEEJAY SCHOOL NOIDA , NOIDA
Class : Class 6
But a is the answer .

Ans 4:

legendary ninja from dps gurgaon, Gurgaon
Class : Class 6

Ans 5:

Mathamagician from BGSNPS, Bengaluru
Class : Class 5
EASY. It is a). FOund it very quickly. I wonder why many of you put c)

Ans 6:

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

Ans 7:

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

Ans 8:

Rohan TR from Sri Aurobindo memorial school, Bangalore
Class : Class 5
Soumya raj is correct

Ans 9:

Ankita Dave from GNS, Bangalore
Class : Class 4
All of them are incorrect so the answer is D

Ans 10:

Snow White from Le Setea , Paris
Class : Class 4

Ans 11:

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

Ans 12:

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

Ans 13:

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

Ans 14:

Syed Seema Taj from Federal public school, Bangalore
Class : Class 7
Answer a

Ans 15:

Smita De from Bishop Cotton Girls School, BANGALORE
Class : Class 6
correct answer is supposed to be C. But according to SOF it is A.

Ans 16:

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

Ans 17:

Devasree from Presidium, Ghaziabad
Class : Class 5
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 18:

KONDURU DEJESH from Sri chaitanya international school, Bangalore
Class : Class 5
p is not pivot joint but a ball and socket joint but according to me c is the correct ans

Ans 19:

Ashee Srivastava from APEEJAY SCHOOL NOIDA , NOIDA
Class : Class 6
I did it c but according to SOF, it is a.

Ans 20:

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

Ans 21:

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 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:

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

Ans 24:

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 25:

Soumyaraj Roy from Kendriya Vidyalaya , Thiruvananthapuram
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 .

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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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