National Science Olympiad Forum By SOF Olympiad Trainer - Page 688
  1. Home
  2. /  Forum

User Forum

Ask Your Question
Ayushi Agrawal from Bal Bharati Public School Pitampura, New Delhi
Subject :NSO    Class : Class 7

Ans 1:

Ishan from AB, Pune
Class : Class 6
explanation please

Ans 2:

Preethi from KKIS, Singapore
Class : Class 7
bruh wth bro

Ans 3:

Adish Gupta from Podar international school , Mumbai
Class : Class 7

Ans 4:

Champ from Reliance Foundation School, Mumbai
Class : Class 6
can I get the explanation.

Ans 5:

Surya from INDIAN SCHOOL JALAN OMAN, Alkamil oman
Class : Class 7
The correct answer is C. Because plants (mainly the aquatic plants) cannot release oxygen in a very low or high temperature. So the graph at C is right as it shows that aquatic plants release less oxygen in both low and high temperatures

Ans 6:

Nayanika Sadhish from CL Metha Sishya OMR, Chennai
Class : Class 8

Ans 7:

Adish Gupta from Podar international school , Mumbai
Class : Class 7

Ans 8:

Aksh Swarnkar from National Center for Excellence CVR, Bangalore
Class : Class 7

Ans 9:

Antareep Mukherjee from New Horizon Public School, Bangalore
Class : Class 7

Ans 10:

sk from psbb millennium school, Chennai
Class : Class 9

Ans 11:

Hritvi from Podar International School, Mumbai
Class : Class 7
explanations please.

Ans 12:

Hamsavarshini Swaminathan from St Anns Senior Secondary School, Roorkee
Class : Class 10
You can check

Ans 13:

Arnav Raj Sharma from GEMS International School the ultra master mega, Gurgaon
Class : Class 7
Can I get explanations

Ans 14:

Darsh Karmarkar from The Bishop Co Ed School Pune, Pune
Class : Class 10

Ans 15:

Meghna Sesha from Deens Academy, Bangalore
Class : Class 7

Ans 16:

TEJAL BADSARA from Modern Public School , BHIWADI
Class : Class 7
Can i get nice explanation pls..

Ans 17:

Adish Gupta from Podar international school , Mumbai
Class : Class 7
Never u dumb mind

Ans 18:

Akshara from NPS, Bengaluru
Class : Class 8
Oxygen cannot be released in very hot temperatures . Thus the correct answer is C

Ans 19:

Hamsavarshini Swaminathan from St Anns Senior Secondary School, Roorkee
Class : Class 10
Because oxygen is most released in moderate temperature only especially in aquatic plants.

Ans 20:

Sarang Shete from Amanora School, Pune
Class : Class 8

Ans 21:

UMA Subramanian from Global Indian International School, Singapore
Class : Class 7

Ans 22:

AARAV AGRAWAL from BIRLA DIVYA JYOTI, SILIGURI
Class : Class 8
The correct answer is C. Because plants (mainly the aquatic plants) cannot release oxygen in a very low or high temperature. So the graph at C is right as it shows that aquatic plants release less oxygen in both low and high temperatures

Ans 23:

Riddhik Bose from Vibgyor High, Airoli, Mumbai
Class : Class 4

Ans 24:

Hamsavarshini Swaminathan from St Anns Senior Secondary School, Roorkee
Class : Class 10

Ans 25:

Darsh Karmarkar from The Bishop Co Ed School Pune, Pune
Class : Class 10
answer is c

Ans 26:

Hamsavarshini Swaminathan from St Anns Senior Secondary School, Roorkee
Class : Class 10
in internet search. One gif will come. It is the best explanation.

Ans 27: (Master Answer)

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

Post Your Answer

Baban from dps, kolkata
Subject :NSO    Class : Class 3

Ans 1:

Aathrei MS Damodaran from Chrysalis High, Bengaluru
Class : Class 7
oi it" is sc i think i mighta" toldja

Ans 2:

prabhakar from xyz, patna
Class : Class 6

Ans 3:

Devansh singhal from Delhi public school Ghaziabad, Ghaziabad
Class : Class 1
(c)

Post Your Answer

Saksham Arora from DPS, Gurugram 102
Subject :NSO    Class : Class 2

Post Your Answer

Shreyas Dasgupta from Bharatiya Vidya Bhavan, Kolkata
Subject :NSO    Class : Class 7

Ans 1:

Hritvi from Podar International School, Mumbai
Class : Class 7
5plus1

Ans 2:

Hritvi from Podar International School, Mumbai
Class : Class 7
Even i need a explanation. the solution is not that clear to me. if P is ahead of Q at the initial by 10m that how did P ratio be 5-4. instead it should be 5 1.

Ans 3: (Master Answer)

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

Ans 4:

Tanmaya Kumar Rout from ALLEN Career Institute, GOVANDI, Mumbai
Class : Class 8
iuhygf

Ans 5:

Hritvi from Podar International School, Mumbai
Class : Class 7
instead it should be 5 1.just make this correction

Ans 6:

from ,
Class :
my answer is :d

Ans 7:

Mitesh from Shishya BEML Public School, Bengaluru
Class : Class 7
Explain please

Post Your Answer

Rohan David from Oakridge International school, Hyderabad
Subject :NSO    Class : Class 4

Ans 1:

Sashriti Das from Delhi Public School Bangalore North, Bangalore
Class : Class 5
The correct option is c

Ans 2: (Master Answer)

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

Ans 3:

Advika Narkar from The Shishukunj International School, Jhalaria Campus, Indore
Class : Class 8
C C c everyone can seethe answer is Ceveryone plz agree

Ans 4:

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

Ans 5:

Adarsh from DPS, Raipur
Class : Class 5
The correct answer is c

Post Your Answer

NISHIT KUMAR from DLF PUBLIC SCHOOL, sahibabad
Subject :NSO    Class : Class 5

Ans 1:

Sri Karthik from Delhi Public School Nacharam, Hyderabad
Class : Class 9
some of my written tests are not posting to my gmail

Ans 2:

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

Ans 3:

Anusha Agarwal from Convent of jesus and Mary st Anthony junior college , Agra
Class : Class 8

Ans 4:

Nakul Bhasker from National Public School Whitefield, Bangalore
Class : Class 5
Bibi (for BS fans)

Ans 5:

AARAV AGRAWAL from BIRLA DIVYA JYOTI, SILIGURI
Class : Class 8
Master Answer- Carbs such pizzas and burgers are very harmful for us. So,they should be consumed in the least amount. Minerals are micronutrients so they should be consumed in less amounts. Fats give us energy so they must be consumed in high quantities. Proteins build our muscles and should be consumed in higher quantities. thus, option D.

Ans 6:

Saanvi Prasad from DPS Noida, Noida
Class : Class 5
aarav u are correct but i got b as correct answer

Ans 7:

Saanvi Prasad from DPS Noida, Noida
Class : Class 5
BB!!!

Ans 8:

Ronav Kerkar from Jamnabai Narsee School, Mumbai
Class : Class 7
carbs, proteins and fats are macronutrients so they should be more than minerals which is a micronutrient but there is no such answer

Ans 9:

SANVI ROHILLA from The little shri, Rohtak
Class : Class 5
B

Ans 10:

Prerna from DPS Vasant Kunj, Delhi
Class : Class 5
i thought A is the correct option pls clarify !

Ans 11:

Niveideeta Cour from Suncity World School, Gurgaon
Class : Class 5
It was a little tricky for me also

Ans 12:

Ashwak from Cambridge, Jalandhar
Class : Class 9
The correct answer is B as our body needs carbohydrates in maximum quantiuty as they give us energy

Ans 13:

GAYATRI from LITTLE ANGELS, VISAKHAPATNAM
Class : Class 5
Minerals are considered as micronutrients whereas carbohydrates, protein and fats are macronutrients so they should be taken in higher quantities

Ans 14:

Anusha Agarwal from Convent of jesus and Mary st Anthony junior college , Agra
Class : Class 8

Ans 15:

PARUL GHARSE from Vibgyor, Mumbai
Class : Class 6

Ans 16:

AADITYA ASHW from DPS NOIDA SECTOR 30, NOIDA NCR
Class : Class 6
its wrong as minerals are to be taken in least quantity ,far less than proteins and fat.Kindly rectify the mistake,mineral should have been last in order.

Ans 17:

Bhavik from St. Froebel Sr. Sec. School,
Class : Class 6

Post Your Answer

Saksham Arora from DPS, Gurugram 102
Subject :NSO    Class : Class 2

Post Your Answer

Ankita Dasgupta from Chryallis High, Bangalore
Subject :NSO    Class : Class 8

Ans 1:

A.SHRIKARTHICK from CS ACADEMY, Erode
Class : Class 7
What is the solution for this?

Ans 2:

Ashwin Shridhar from Vidyashilp Academy, Bangalore
Class : Class 9
Solution?

Ans 3:

Arnav Raj Sharma from GEMS International School the ultra master mega, Gurgaon
Class : Class 7
Well, I had expected a solution in this one cause you gave that tiny filthy little box on each and every question.

Ans 4:

Arnav Diwan from F.A.I.P.S Kuwait, Kuwait
Class : Class 10
(First Column) (3 X 5 X 4) minus 36 = 24 = 2 to power 3 2 to power 4Note: Exponential power 3 = from first column first cell, Exponential power 4 = from first column third cell(Second Column) (Ans 4 X 4 X 4) minus 32 = 32 = 2 to power 4 2 to power 4Note: Exponential power 4 = from second column first cell, Exponential power 4 = from second column third cell(Third Column) (5 X 7 X 6) minus 114 = 96 = 2 to power 5 2 to power 4Note: Exponential power 5 = from third column first cell, Exponential power 4 = from third column third cell

Ans 5:

Arnav Diwan from F.A.I.P.S Kuwait, Kuwait
Class : Class 10
(First Column) (3 X 5 X 4) – 36 = 24 = 2³ 2⁴Note: Exponential power 3 = from first column first cell, Exponential power 4 = from first column third cell(Second Column) (Ans 4 X 4 X 4) – 32 = 32 = 2⁴ 2⁴Note: Exponential power 4 = from second column first cell, Exponential power 4 = from second column third cell(Third Column) (5 X 7 X 6) – 114 = 96 = 2⁵ 2⁶Note: Exponential power 5 = from third column first cell, Exponential power 4 = from third column third cell

Ans 6:

Bipasana from KV IIT Kanpur, Kanpur
Class : Class 9
Can someone tell the solution?

Ans 7:

Dhairya Vinayak from Loyola High School, Patna
Class : Class 8

Ans 8:

Reyansh Hatgaonkar from ERA English medium school , Pandharkawada
Class : Class 8

Ans 9:

Bipasana from KV IIT Kanpur, Kanpur
Class : Class 9

Ans 10:

Vartika Agarwal from Phoenix world school, Pune
Class : Class 9
where is the solution?

Ans 11:

Arnav Diwan from F.A.I.P.S Kuwait, Kuwait
Class : Class 10
(First Column) (3 X 5 X 4) – 36 = 24 = 2 to power 3 2 to power 4Note: Exponential power 3 = from first column first cell, Exponential power 4 = from first column third cell(Second Column) (Ans 4 X 4 X 4) – 32 = 32 = 2 to power 4 2 to power 4Note: Exponential power 4 = from second column first cell, Exponential power 4 = from second column third cell(Third Column) (5 X 7 X 6) – 114 = 96 = 2 to power 5 2 to power 4Note: Exponential power 5 = from third column first cell, Exponential power 4 = from third column third cell

Ans 12:

H R Kanish from Chennai public school, Chennai
Class : Class 8

Post Your Answer

Aditya Avadhani from Deens Academy, ECC road, Whitefield, Bengaluru
Subject :NSO    Class : Class 4

Ans 1:

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

Ans 2:

SUHARSH SAXENA from dpsnoida, Noida
Class : Class 4
No d is not the answer I have google it it is showing g that a Is a bad idea

Ans 3:

NARAYANAN VENKITASUBRAMANI from THE PSBB MILLENNIUM SCHOOL, Coimbatore
Class : Class 8

Ans 4:

avsonawane from Blue Ridge Public School, Pune
Class : Class 9
the correct option shall be "D". The answer marked in the system shall be reviewed...

Ans 5:

Bhavya Sheth from Bright Day School, Vadodara
Class : Class 6
Yes answer should be D because I also think like Vidhya M.

Ans 6:

Midhuna from ABCD, Banglore
Class : Class 3
Answer is C

Ans 7:

DEVAANGANA SARDAR from G.D. Birla Centre for Education, Kolkata
Class : Class 7
Answer is most probably C

Ans 8:

Vihaan Nair from Ambassador School, DUBAI
Class : Class 8

Ans 9:

Avya Pandey from NPS International, Singapore
Class : Class 8
it should be D

Ans 10:

Vihaan Nair from Ambassador School, DUBAI
Class : Class 8
Explanation please

Ans 11:

Arjun Gourineni from CHIREC International School, Hyderabad
Class : Class 7
D is the ans

Ans 12:

ishi gupta from DPS NOIDA, NOIDA
Class : Class 4

Ans 13:

Gunnit Kant from DPS, Nerul, Navi Mumbai
Class : Class 5
c

Ans 14:

ishi gupta from DPS NOIDA, NOIDA
Class : Class 4
yes ans should be d

Ans 15:

SJ HARITHA from PSNLO, BENGALURU
Class : Class 10
same

Ans 16:

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

Ans 17:

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

Ans 18:

shivan iyer from dr pillai global academy, MUMBAI
Class : Class 4
no no ans should be d because how will we get petrol

Ans 19:

Goutham from lt, Chennai
Class : Class 4
The answer should be D. How can A and B be correct?

Ans 20:

Samarth Vijay Yeliathaya from Shri Kumarans Children home,cbse, Bangalore
Class : Class 5
Even I thought 'D' is the answer

Ans 21:

Sreejani Bhaduri from National Public School, Bangalore
Class : Class 9
Ps

Ans 22:

SHUVRA MAITRA from THE HERITAGE , KOLKATA
Class : Class 4

Ans 23:

Suhana Kedia from Griffin's international school, Kharagpur
Class : Class 5
Maybe dry cleans have a chemical that contains petrol for oil grease

Ans 24:

Aarav from SNBP, Pune
Class : Class 4
It’s c because talcum powder does work on fresh ink stains and petrol works on oil and grease everyone should know that cotton need soft detergent

Ans 25:

Vidhya M from Vibgyor High Bannerghatta, Bangalore
Class : Class 7
I don't believe that fresh ink stains can be removed with talcum powder and oil and grease can be removed with petrol. I think the answer should be "D"

Ans 26:

Goutham from lt, Chennai
Class : Class 4
The answer should be D. How can A and B be correct?

Ans 27:

Harshit from Montfort , Delhi
Class : Class 7
its c

Ans 28:

Anshuman raj from STCS, Karnal
Class : Class 9
Actually fresh ink stains can be lighten by using talcum powder and in dry cleans stores petrol is used to remove oil and grease So from my side C is the answer

Ans 29:

Shivam Chablani from The Shriram Millenium School , Faridabad
Class : Class 5
The answer should be D

Post Your Answer

Karan Chavan from GIIS,Chinchwad, Pune
Subject :NSO    Class : Class 5

Ans 1:

Saanvi Prasad from DPS Noida, Noida
Class : Class 5
it is option c,i wrote it wrong

Ans 2:

Vedanth S from Kumarans Childrens Academy, Bangalore
Class : Class 6
even option 'a' is incorrect.

Ans 3:

vayurve gowda from narayana group of schools, chennai
Class : Class 6
if we are on a beach we should move away from the sea as tsunami can occur

Ans 4:

Sai Lakshmi Rao from Maneckji Cooper Education Trust, Mumbai
Class : Class 4
D should have been A and C instead of All Of The Above.

Ans 5:

Pallav Agarwal from DLF PUBLIC SCHOOL SAHIBABAD, Ghaziabad
Class : Class 9
OH guys its written what NOT to do LOL!!

Ans 6:

Lakshana from SBOA School and Junior College, Chennai
Class : Class 6
please look at the question. it says what is incorrect to do so, only. (c) is correct option

Ans 7:

Satvik Agrawal from Delhi Public School, bhopal
Class : Class 5
Oh poor guys it is writen that what should we not do. LOL

Ans 8:

Soumyaraj Roy from Kendriya Vidyalaya , Thiruvananthapuram
Class : Class 7
Read in the synopsis of the ch . It is written to get under a desk . You are right Shaurya Veer . Fault of SOF !!!!!!!!!!

Ans 9:

Arnav from PSBB, Chennai
Class : Class 5

Ans 10:

vayurve gowda from narayana group of schools, chennai
Class : Class 6
yes option a is also correct

Ans 11:

Shaurya Veer from Army Public School ASC C and C , Bangalore
Class : Class 10
answer should be (A) if the building falls or something falls on the table we will die

Ans 12:

Twisha Arora from Modern Vidya Niketan, Sector - 17, Faridabad, Haryana, FARIDABAD
Class : Class 7
Hello Everyone, the answer is option 'C' and it is absolutely correct because the question says that which of the following should you NOT do in an earthquake. Please read the questions carefully before complaining.

Ans 13:

Niveideeta Cour from Suncity World School, Gurgaon
Class : Class 5
It is option C)

Ans 14:

Neil Mathew from National Public school, bengaluru
Class : Class 8
but the desk can protect you,in the synopsis it said to get under a table and cover your head with a pillow

Post Your Answer