National Science Olympiad Forum By SOF Olympiad Trainer - Page 668
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Amruta Nasikkar from bgs nps, bangalore
Subject :NSO    Class : Class 5

Ans 1:

Mahi Pimparkar from Vibgyor High, Pune
Class : Class 5
So sorry, i didnt read the question correctly

Ans 2:

Mahi Pimparkar from Vibgyor High, Pune
Class : Class 5
I do not understand how the answer is B.. The sun is not a planet, it is a star. And there are times when you can see venus in the sky, it is the only planet which can be spotted in the sky during the day (Rarely spotted).

Ans 3:

KRITHYA GUPTA from LOTUS VALLEY INTERNATIONAL SCHOOL, NOIDA
Class : Class 7
the correct answer should be b because the sun is not a planet.

Ans 4:

KRITHYA GUPTA from LOTUS VALLEY INTERNATIONAL SCHOOL, NOIDA
Class : Class 7
sorry i did not read the question properly

Ans 5:

KRITHYA GUPTA from LOTUS VALLEY INTERNATIONAL SCHOOL, NOIDA
Class : Class 7
the correct answer should be b because the sun is not a planet.

Ans 6:

Devasree from Presidium, Ghaziabad
Class : Class 10
B

Ans 7:

Akshaj Malhotra from Salwan Public School, Gurugram
Class : Class 7
yaa and solution is also wrong it says all are correct

Ans 8:

Akshaj Malhotra from Salwan Public School, Gurugram
Class : Class 7
sol is A. The Sun is a huge mass of very hot gases. --- Correct.B. The Sun is the only planet that we can see in the day. --- Correct.The Sun’s light is so bright, that all other plants are not visible.C. The distance of the Sun from the Earth is about 150,000,000 km. --- Correct. Sun is 150 million km away from us.D. The Sun is important to the Earth because it provides light energy to green plants to make food. --- Correct. If there is no sunlight, plants cannot make food, they will die. There will be nothing to eat for animals and us.So, Option B is the right answer.

Ans 9:

Vihaan Patil from Bombay Scottish School, Mahim Mumbai
Class : Class 6
number one sun is A STAR BOT A PLANET number two SUN IS 147.26 MILLION KM AWAY FROM EARTH NOT 150,000,000

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ranjani from sancta maria, Hyderabad
Subject :NSO    Class : Class 7

Ans 1:

santosh katiyar from narayana vidhyalayam, Nagpur
Class : Class 7
yes same here

Ans 2:

Saanvi S Ammanagi from KLE Society School, Rajajinagar, Bengaluru
Class : Class 7
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Ans 3:

Amol Athawale from WoodRidge High, aurangabad
Class : Class 7
ameya athawale from woodridge high school,aurangabadclass:7thX and Y aren't there in the question then what to answer

Ans 4:

Ashwin Shridhar from Vidyashilp Academy, Bangalore
Class : Class 9
There is neither x nor y, how do you expect us to give the correct answer?

Ans 5:

Mradul from Modern public school bhiwadi, Bhiwadi
Class : Class 7
All are from our NSO level1 workbookAnd they have not mentioned X and Y

Ans 6:

Samitha Kumar from Boaz Public School , Chennai
Class : Class 10

Ans 7:

Ritika Bakshi from Techno India Group public School Hooghly, Chinsurah
Class : Class 7
Yes there is no x and y in this question

Ans 8:

dhairya mittal from vidyashram international school jodhpur, Jodhpur
Class : Class 5
You all are correct

Ans 9:

Suchita A from PSBB Millennium, Gerugambakkam, Chennai
Class : Class 7
i don't know if this question is right or are my eyes playing tricks on me but i don't seem to see an X or a Y in here.

Ans 10:

dhairya mittal from vidyashram international school jodhpur, Jodhpur
Class : Class 5

Ans 11:

Shriya Sreekrishna from BLUEBELLS SCHOOL INTERNATIONAL, New Delhi
Class : Class 7
This question has an error in it. I too found that there was no X and Y in this.

Ans 12:

Chaitanya L K from SKCHEC, bangalore
Class : Class 8
exactly...there is neither X or Y !! what is wrong with this question...

Ans 13:

Palash sachin patel from Kips, Patan
Class : Class 8
question is itself wrong

Ans 14:

ARNAV BARANWAL from KPS SCHOOL, bhilai
Class : Class 4
What is this X and Y. Question is totally wrong

Ans 15:

Pisal Dhruv from Veer Bhagat Singh International School, Mumbai
Class : Class 7
there are no x and y mentioned

Ans 16:

Anshuman D from MVM, Hyderabad
Class : Class 9
I too found it wrong.There is neither X nor Y

Ans 17:

SANVI from D PS VADODARA, Vadodara
Class : Class 9
if you don't mind please check what question you are setting and please correct it if it is wrong

Ans 18:

Koina Rautkar from DAV ispat sr sec public school , Dalli rajhara
Class : Class 7
This is wrong question we should get full marks

Ans 19:

Rajesh Lamba from MVN School Faridabad, Faridabad
Class : Class 5
Absolutely wrong

Ans 20:

Arnav Ranka from Gyan Bharati School, Saket, New Delhi
Class : Class 9
Also, if we try to report an error, they say that it is not a valid error. Please tell them to fix this immediately.

Ans 21:

ANAND K S from KENDRIYA VIDYALAYA NO.2, KOCHI, ERNAKULAM
Class : Class 7

Ans 22:

Aarnavi Mann from Scholars rosary Sr. Sec. School, Rohtak
Class : Class 8
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Ans 23:

arijit paul from New Town School, Kolkata
Class : Class 9
same case here like harshita A ranjani u should give the correct question

Ans 24:

Bhavtosh Tripathi from Maneckji Cooper Education Trust School, Mumbai
Class : Class 9
there is no X

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computer shop from REAL COMPUSYSTEM, AHMEDABAD
Subject :NSO    Class : Class 1

Ans 1: (Master Answer)

Admin from revisewise, Noida
Class : Class 1
The black air causes air pollution and it makes the air dirty. Hence, the correct answer is B.

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SAANVI.SHUKLA from DELHI PUBLIC SCHOOL, NOIDA
Subject :NSO    Class : Class 2

Ans 1:

SAANVI.SHUKLA from DELHI PUBLIC SCHOOL, NOIDA
Class : Class 2

Ans 2:

Yeasvith Vema from TMS, Gurgaon
Class : Class 6
A

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Agnimitra Gupta from south point school, Kolkata
Subject :NSO    Class : Class 4

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PRANEEL PRIYASH PANDA from AECS NARORA, BULANDSHAHR
Subject :NSO    Class : Class 6

Ans 1:

Ashwak from Cambridge, Jalandhar
Class : Class 9
Yes the answer is C as iron nail , nickle and steel are magnetic

Ans 2:

Aarav Gupta from Cambridge International School, Jalandhar
Class : Class 5
answer is c nickel coin is also a magnetic substance but steel is a non magnetic substance

Ans 3:

Sharmi Chowdhury from G.D Birla Centre For Education , Kolkata
Class : Class 7
But in containers i

Ans 4:

Manya Pujar from EuroSchool, Davangere
Class : Class 6
No, the answer is A as both steel and nickel are magnetic .

Ans 5:

rocker harshil from TImpany senior secondary school, Visakhapatnam
Class : Class 6

Ans 6:

Naman from Svm, Nalasopara
Class : Class 6
the answer will be C as 3 option is non-magnetic

Ans 7:

Ashmi Narkar from The Shishukunj International School, Jhalaria Campus, Indore
Class : Class 9
The question is not clear

Ans 8:

AMAN SAIKIA from DELHI PUBLIC SCHOOL DULIIAJAN, DULIAJAN
Class : Class 9
In the first and second option, the magnetic materials are iron nail and steel nail respectively. In the third option all are non magnetic. In fourth option, both are magnetic materials. Therefore Ans:- A (i) and (ii)

Ans 9:

Harshita Sharma from Lilavatibai Podar High School, Mumbai
Class : Class 8

Ans 10:

Dushyant Singh from Shree Ram Centenial School, Indore
Class : Class 9
copper is non magnetic

Ans 11:

Agustya vaid from Somerville school vasundhara enclave, Delhi
Class : Class 7

Ans 12:

Sharmi Chowdhury from G.D Birla Centre For Education , Kolkata
Class : Class 7
But in containers I

Ans 13:

Veda Dua from Delhi Public School, R. K. Puram, New Delhi
Class : Class 10
IT SHOULD BE A

Ans 14:

Anika Saha from New Town School, KOLKATA
Class : Class 6
C

Ans 15:

Shuvangi Das from Vivekananda mission school, haldia
Class : Class 9
But...Iron, nickel and copper r magnetic, and both steel and aluminium r non-magnetic. Then why option A is correct ans???

Ans 16:

Aadvik saini from Mvn sector 17, Faridabad
Class : Class 8
c

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Krishiv Goyal from Ridge Valley School, Gurgaon
Subject :NSO    Class : Class 6

Ans 1:

Shuvangi Das from Vivekananda mission school, haldia
Class : Class 9

Ans 2:

Adrija Pandey from SSRVM Bhugaon Pune, Pune
Class : Class 9
R-magnesium

Ans 3:

Anika Saha from New Town School, KOLKATA
Class : Class 6
Q is Vitamin D.

Ans 4:

Dhruv Babbar from Lotus valley international school Gurugram , Gurugram
Class : Class 6
oh vitamin A

Ans 5:

J Jeeva from BGS National Public School, Bengaluru
Class : Class 9
What is spasms????

Ans 6:

Mihika Hivarekar from Global Indian International School, Pune
Class : Class 7

Ans 7:

SAMIKSHA PATIL from CITYPRIDE SCHOOL, CHINCHWAD
Class : Class 6

Ans 8:

Souradeepto Das Mandal from Hyderabad Public School, Hyderabad
Class : Class 6
question not complete pls fix

Ans 9:

Shubhan from Euro School, Mumbai
Class : Class 5
answer is (d)

Ans 10:

Ritabrata Das from OPJS, Angul
Class : Class 7
what is gut??????

Ans 11:

Shikhar Mallick from Holy Cross School, Agartala
Class : Class 7
Can someone please tell me what are the nutrients?

Ans 12:

Adrija Pandey from SSRVM Bhugaon Pune, Pune
Class : Class 9
P-vit a ,Q- vit d

Ans 13:

khushi Joshi from Svkm , Mumbai
Class : Class 10

Ans 14:

Priydarshini sehgal from The Shri ram school aravalli, Gurgaon
Class : Class 8
P- Vitamin AQ- Vitamin DR- IDKS- Vitamin K

Ans 15:

Shuvangi Das from Vivekananda mission school, haldia
Class : Class 9
The question has some error......Can anyone find it and declare? Please!!!!

Ans 16:

Adrija Pandey from SSRVM Bhugaon Pune, Pune
Class : Class 9
S-vitamin K

Ans 17:

Ashmi Narkar from The Shishukunj International School, Jhalaria Campus, Indore
Class : Class 9
Umm, SOF..... No, this time nothing is wrong in this question (bcz almost all times I post for wrong question ;P) but could you explain this a little better in the solution?

Ans 18:

Dhruv Babbar from Lotus valley international school Gurugram , Gurugram
Class : Class 6
what is L?

Ans 19:

Vedang Amonkar from Dr K B Hedgewar High School, Panaji
Class : Class 6
ummm intestine?

Ans 20:

Ashee Srivastava from APEEJAY SCHOOL NOIDA , NOIDA
Class : Class 7
gut means intestine and spasms means muscles suddenly contracting involuntarily.

Ans 21:

Anika Diljith from Vibgyor High Electronic City, Bangalore
Class : Class 7
Question is not complete...

Ans 22:

Ronav Kerkar from Jamnabai Narsee School, Mumbai
Class : Class 7
because P is vitamin a and i think S is vitamin k

Ans 23:

Aadvik saini from Mvn sector 17, Faridabad
Class : Class 8

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Aarushi Batra from DPS north Banglore , Banglore
Subject :NSO    Class : Class 8

Ans 1: (Master Answer)

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

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Aryan Sirohi from Mount LItera Zee School, Bangalore
Subject :NSO    Class : Class 5

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KISHORE KUMAR E from MAHARISHI INTERNATIONAL RESIDENTIAL SCHOOL, SUNGUVARCHATHIRAM
Subject :NSO    Class : Class 8

Ans 1:

Anushka Singh from Uttam Girls School, Ghaziabad
Class : Class 9
Melamine resits fire and firefighers also wear their suits made up of melamine.

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