National Science Olympiad Forum By SOF Olympiad Trainer - Page 544
  1. Home
  2. /  Forum

User Forum

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

Ans 1:

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 2:

Kushal from Chirec, Hyderabad
Class : Class 7

Ans 3:

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

Ans 4:

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

Ans 5:

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

Ans 6:

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

Ans 7:

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

Ans 8:

Aarav Srivastav from DWPS , Noida Extension
Class : Class 7

Ans 9:

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

Ans 10:

SUSHEELA KAMLENDRA from FLORENCE ACADEMY, BENGALURU
Class : Class 6

Ans 11:

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

Ans 12:

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)

Ans 13:

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

Ans 14:

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

Ans 15:

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

Ans 16:

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

Ans 17:

Aarav Srivastav from DWPS , Noida Extension
Class : Class 7

Ans 18:

SJ HARITHA from PSNLO, BENGALURU
Class : Class 10

Ans 19:

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

Ans 20:

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 21:

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

Ans 22:

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

Ans 23:

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

Ans 24:

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

Ans 25:

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

Post Your Answer

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

Ans 1:

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

Ans 2:

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

Ans 3:

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

Ans 4:

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

Ans 5:

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 6:

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 7:

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

Ans 8:

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 9:

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

Ans 10:

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

Ans 11:

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

Ans 12:

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

Ans 13:

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

Ans 14:

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

Ans 15:

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

Ans 16:

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

Ans 17:

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

Ans 18:

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

Ans 19:

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

Ans 20:

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

Ans 21:

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

Ans 22:

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

Ans 23:

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

Ans 24:

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

Ans 25:

Nandini from Ins, Pune
Class : Class 8

Ans 26:

Animesh Jain from DPS, Bengaluru
Class : Class 10

Post Your Answer

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

Post Your Answer

Chaitanya L K from SKCHEC, bangalore
Subject :NSO    Class : Class 7

Ans 1:

P Easha from Chettinad Vidyashram, Chennai
Class : Class 7
p

Ans 2:

Nivriti from Euro, Mumbai
Class : Class 8
ans is c

Ans 3:

DIPTANGSU PARBAT from SOUTH POINT HIGH SCHOOL, Kolkata
Class : Class 7

Ans 4:

Hritvi from Podar International School, Mumbai
Class : Class 7
Bubble pack is a good insulator than a cotton wool.

Ans 5:

Nivriti from Euro, Mumbai
Class : Class 8
ns is C

Ans 6:

priyanka from kendriya vidalaya kathmandu, JHAJJAR
Class : Class 8
q

Ans 7:

Ashvita R from PSBB Millennium School OMR, Chennai
Class : Class 7
i clicked the correct option but it showed wrong.. this system is completely stupid.. 0 stars out of 5

Post Your Answer

Chaitanya L K from SKCHEC, bangalore
Subject :NSO    Class : Class 7

Ans 1:

priyanka from kendriya vidalaya kathmandu, JHAJJAR
Class : Class 8
c

Ans 2:

Atharv Deshmukh from Lexicon International School, Pune
Class : Class 7

Ans 3:

shaurya aggarwal from scholars rosary senior secondary school, rohtak
Class : Class 9

Ans 4:

Sarah Ahmad from st. mary's school, delhi
Class : Class 8
C is correct, the statement (i) is vague

Ans 5:

Sanidhya Kapoor from Shikshantar, Gurugram
Class : Class 8
it should be C ,since C is the ovule

Ans 6:

shaurya aggarwal from scholars rosary senior secondary school, rohtak
Class : Class 9

Ans 7:

Anshuman D from MVM, Hyderabad
Class : Class 9
Yes it is CQ is female gamete and it does transform into endosperm

Ans 8:

shaurya aggarwal from scholars rosary senior secondary school, rohtak
Class : Class 9

Ans 9:

shaurya aggarwal from scholars rosary senior secondary school, rohtak
Class : Class 9
b is the answer

Ans 10:

Antareep Mukherjee from New Horizon Public School, Bangalore
Class : Class 8

Ans 11:

SOUVAGYA SAHA from De Nobili School, DHANBAD
Class : Class 10
why not statement V is correct ?SOF pls explain

Post Your Answer

Someone from Nps, Bangalore
Subject :NSO    Class : Class 4

Ans 1:

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

Ans 2:

Krishika Madan Shanmugam from National Public School, Bangalore
Class : Class 5
c ant be correct cause Venus is not made up of frozen gases

Ans 3:

vighneshwar from study hall, Lucknow
Class : Class 5
D

Ans 4:

Kanav Dhingra from DPS sec45, Gurgaon
Class : Class 10
correct ans in option D

Ans 5:

Pranay patel from DPS east, Bangalore
Class : Class 5
D

Ans 6:

Vivaan A V from Loyola school, Jamshedpur
Class : Class 4
Because Venus is the only planet to rotate clockwise, not Uranus

Ans 7:

Krishika Madan Shanmugam from National Public School, Bangalore
Class : Class 5

Ans 8:

Sreejani Bhaduri from National Public School, Bangalore
Class : Class 10
HOW🌗🌔🌏🌺🌏🐎🐚🦃🎃🐓🌍🌸🌍🐓🌼🍄🐁🌼🐐😳😳😳😳😳😳😳😳😳😳😳😳😳😳

Ans 9:

Advait Avadhoot Joshi from Arya Gurukul Nandivli, Kalyan
Class : Class 5
Option C is also correct. So students selecting Option C should be awarded 2 marks.

Ans 10:

Someone from Nps, Bangalore
Class : Class 6
D

Ans 11:

Savya Vishal Neha Babar from HPS Begumpet, Hyderabad
Class : Class 5
D

Ans 12:

Vedang Siddharth Thakare from SMT's Saraswati English Medium School., Thane
Class : Class 4
D

Ans 13:

Krishika Madan Shanmugam from National Public School, Bangalore
Class : Class 5
C is not correct

Ans 14:

Vivaan A V from Loyola school, Jamshedpur
Class : Class 4
The answer is "C"

Ans 15:

AAYANSH from New horizon scholars school, Thane
Class : Class 10
cxvcv3cvtvhFVChcwlejn ljenlf wfh bh b huebvfhdocjcjnnnncncfhvb bhcbhbdhcvdgb hdbf hfjn nj n jncnnhfohvhbvobuwr3hqaswedrfthnjmk,ljnbvcxxcfvbsdcfvgbxdcFVGBDCVBNMxcvbnmdfghjasdfgjkzawsxedcrvftghnjqzawsxdfvtghunzasxdcrfvgswderftgyhazwsdfg dfgsdfghjkljghgfbjcxnjxnjnnccjjcjdccujcdjfhnvfcduhcccccccfffffffffffffffffrrrrrrrrrrrffffffffffffffffwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwevvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv jfknwjf ejjjjjjjjncvfjnb fjnvfjvmifmccccccccccccccccccccccccccccccccccccccccffvweevwevwrtvtrwh fccccczsxxxxxxxxxxxxxhhhhhhhhdsssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssss z cf ffffffffffffffffffffffffffffffffffffffffffffffffffffffff nmmmmmmmnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnn

Ans 16:

vighneshwar from study hall, Lucknow
Class : Class 5
D

Ans 17:

Manav from TFS Gunjur, Bengaluru
Class : Class 4
option D

Post Your Answer

Pragun goel from Venkateshwar International School, Delhi
Subject :NSO    Class : Class 5

Ans 1:

Swastik Panda from Orchid International school, Pune
Class : Class 5
They should mention the sun's position in respect to the moon.

Ans 2:

Diya Anilkumar from DPS Bangalore North, Bangalore
Class : Class 5
It is not a logical question

Ans 3:

Vatsala from DPS, Durg
Class : Class 8

Ans 4:

Shaurya Gote from KV BSF Dantiwada, S K Nagar
Class : Class 5

Ans 5:

Ritabrata Das from OPJS, Angul
Class : Class 7

Ans 6:

CHIRAG KHORIA from EVERGREEN PUBLIC SCHOOL, MAYNAGURI
Class : Class 5
b and c is like same or i am wrong

Ans 7:

Shaurya Gote from KV BSF Dantiwada, S K Nagar
Class : Class 5

Ans 8:

Pratham Dave from GNS, Bangalore
Class : Class 7
B or C is the answer to this question

Ans 9:

Shourya Ganesh from The Green Acres Academy, Mumbai
Class : Class 9
b or c will depend on Sun's position which is not mentioned

Ans 10:

Bhavikaa kedia from Anand Niketan Satellite, Ahmedabad
Class : Class 5
This is a logical question as it is asking which phase comes in the waning phase, so the answer given is correct

Ans 11:

Divyanshi from United international School, Bangalore
Class : Class 6
b or c should be the correct answer when they say it as wrong it is not fair

Ans 12:

Vatsala from DPS, Durg
Class : Class 8

Ans 13:

Ahona Baidya from GGIS, Pune
Class : Class 7
According to me they should have told the sun's position

Post Your Answer

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

Ans 1:

Ashlynn Bhatia from Modern Vidya Niketan Sr. Secondary School Sector - 17, FARIDABAD
Class : Class 4
But according to recent studies during photosynthesis plants take in carbondioxide and release oxygen due to which animals and humans are able to breathe oxygen . So , there i some error in the robotic system of SOF Olympiad Trainer . Even if you chose C but they show the correct answer is A you needn't worry as you can report the error using the button next to the one that opens this chat

Ans 2:

Nivaan Trisal from GIIS Banerghatta , Bangalore
Class : Class 4

Ans 3:

Havi Jain from GEMS modern academy, Gurgaon
Class : Class 8
A

Ans 4:

Vihaan kohli from MVN Aravali, Faridabad
Class : Class 3
a

Ans 5:

Adrito Roy from STEM World School, Kolkata
Class : Class 4

Ans 6:

Manya Purohit from Tree house high school, VasaiWest
Class : Class 3
Why a

Ans 7:

Aradhya Shankar from Vibgyor, Kolhapur
Class : Class 4
C

Ans 8:

Nishant Hazarika from Air Force School, Dibrugarh
Class : Class 3
Yes,very tricky indeed.Everybody will write C but the answer will be A

Ans 9:

Eklavya Gondule from DPS Bhilai, BHILAI
Class : Class 7

Ans 10:

Anagh Agrawal from Billabong high, JABALPUR
Class : Class 3
C

Ans 11:

Ivan Tyagi from Chirec International School , Hyderabad
Class : Class 8
Very,very,very,very,very,very,very,very tricky

Ans 12:

Santina Suzanne from owis, bangalore
Class : Class 4
the answer is c but it glitched and told the answer is a

Ans 13:

Aarna gupta from Nps international , Singapore
Class : Class 6

Ans 14:

Karangat house from Navy Children School, Payyannur
Class : Class 3
a a a

Ans 15:

Ashwak from Cambridge, Jalandhar
Class : Class 9
It was a little tricky .

Ans 16:

Shriyansh Tripathy from SAI International School, BHUBANESWAR
Class : Class 3
a

Post Your Answer

Mitul Tiwari from Lotus Valley International School, Noida
Subject :NSO    Class : Class 3

Ans 1:

Aneesh Balaji from BVBARR school, Hyderabad
Class : Class 9
c

Ans 2:

Arihant Medhi from Dps Barasat, Kolkata
Class : Class 8
C

Ans 3:

Kian Gracias from BOMBAY SCOTTISH SCHOOL, MUMBAI
Class : Class 4
why

Ans 4:

Kashika Goel from DPS Noida, Noida
Class : Class 7

Ans 5:

Achyut Rai from THE KHAITAN SCHOOL, NOIDA
Class : Class 7
c

Ans 6:

Anagh Agrawal from Billabong high, JABALPUR
Class : Class 3
C

Ans 7:

Soumyajit Das from Hariyana Vidya Mandir, NORTH 24 PARGANAS
Class : Class 8
c

Ans 8:

Soumyajit Das from Hariyana Vidya Mandir, NORTH 24 PARGANAS
Class : Class 8

Ans 9:

ADVAY Rustagi from Vidyashilp Academy , Bengaluru
Class : Class 5
TRTHYJTUYHNBCFBGSEHFNDHBG RCFHVBGHYVDNUCSNGBCTDYHUJSBNDVGTHJHSMHNCGDBHEYFNHENDEVHGBTDFHUNGBGRYFHXNHGBNFVDHFJUHDVBVYCGFHDJDMSUHDRYFDJYUMHFJGDHJYUHRFGBHDNDXHFDFJCYRFHSDFTYRFHCYRFHJHCYDRHFJEHDSJYUHJSHJYFRHDYUHFJHJVDCUYXJRKHFMYVCBHXJFYUDJSJHCJDYFRUEYDHJYUSHJDYWESFHDYUSEUIYUJFDUREYJHDGJHJSMYHJEDJGFHNYDFHDGJHCJMXYMURJKUFYHJDXHUYDGVHCNHNJFKGVHCNUNCJHFJGVHNCHGJHFDVNHJHGJHDVJYJHGJFHVNJCJHJFDJKHJHFJVJHNJHMUHJGHFNVFJVHJNJMGFHVGFH

Ans 10:

AAYANSH DHRUV from Orchid The International, Bangalore
Class : Class 5
c

Ans 11:

Mugdha Bangthai from Delhi public school, Nazira
Class : Class 4
1.A rat chew its food.2.A squirrel chew its food also.3.A frog swallow its food.4.A rabbit chew its food.Therefore, answer is option C (frog) because it swallows its food.

Ans 12:

Achyut Rai from THE KHAITAN SCHOOL, NOIDA
Class : Class 7
c

Post Your Answer

Akshat Jain from Delhi Public School, Greater Noida
Subject :NSO    Class : Class 5

Post Your Answer