National Science Olympiad Forum By SOF Olympiad Trainer - Page 686
  1. Home
  2. /  Forum

User Forum

Ask Your Question
Charu Gupta from DPS Faridabad, Faridabad
Subject :NSO    Class : Class 7

Ans 1:

SHREYAN GUPTA from GARDEN HIGH SCHOOL, KOLKATA
Class : Class 9
Where is D?

Ans 2:

Mayank Mili from Delhi Public School, Golaghat
Class : Class 9
D is incomplete answer

Ans 3:

Agastya Tripathi from dps gurgaon, Gurgaon
Class : Class 4
d is incomplete

Ans 4:

Hamsavarshini Swaminathan from St Anns Senior Secondary School, Roorkee
Class : Class 10
D IS INCOMPLETE OPTION.

Ans 5:

Iba Khan from DPS , Noida
Class : Class 8
d is grammatically incorrect

Ans 6:

rethish from Veltech, Avadi
Class : Class 3
so it is both b and c now ok guys.

Ans 7:

Venya Vikas from Chirec International , Hyderabad
Class : Class 7
D is an incomplete option

Ans 8:

PS Gour from Chirec international schoo The best 30 years and beyond, Hyderabad
Class : Class 7
the last option is not understandable

Ans 9:

Aryan Keswani from Delhi Public School, Mathura Road, New Delhi
Class : Class 10
Yes,it is wrong. Incomplete option

Ans 10:

Shourya Bhushan from DPS Gurgaon, Gurgaon
Class : Class 7
They have not written: Both B and C in the D option. Whereas, B is important in the D option.

Ans 11:

arjun from the bishops school camp , pune
Class : Class 8
OPTION D SHOULD BE ''BOTH B AND C

Ans 12:

rethish from Veltech, Avadi
Class : Class 3
Turmeric indicator remains yellow in acidic (vinegar) and neutral solutions (common salt solution) and turns red in basic solution (soap solution and baking soda).

Ans 13:

Pratham Dave from GNS, Bangalore
Class : Class 7
D is an incomplete option

Ans 14:

yash kirpalani from st gregorios high school chembur, Mumbai
Class : Class 7
the last option is incomplete the complete option should be Both B and C

Ans 15:

Hritvi from Podar International School, Mumbai
Class : Class 7
D is an incomplete option .

Ans 16:

Jahnavi Srikoti from narayana, Ghaziabad
Class : Class 7
d is incomplete

Ans 17:

Advait bhat from Kendriya Vidyalaya , Bangalore
Class : Class 9
d is an incomplete answer

Ans 18:

Nida Farheen CM from vedavyasa, kozhikode
Class : Class 10
the answer is d

Ans 19:

Aanya from DAV, Gurgaon
Class : Class 8
The whole statement isn't mentioned

Ans 20:

Arnav Raj Sharma from Dpsvk, Gurgaon
Class : Class 9
please explain

Ans 21:

Anuraaj Salunkhe from St Gregorios High School, Mumbai
Class : Class 10

Ans 22:

rethish from Veltech, Avadi
Class : Class 3

Post Your Answer

Hiyansh Jain from Podar International School, Mumbai
Subject :NSO    Class : Class 5

Ans 1:

SHREYAS ANANDHAN from Phoenix Greens International School, Hyderabad
Class : Class 6
nope you are telling the opposite

Ans 2:

Anantjit Chander from Apeejay School, Sector 15, Faridabad
Class : Class 10
The answer is (C), but (B) can also be the answer.

Ans 3:

Fiza from ABCD, Cochin
Class : Class 7
When it's inside a volcano, it's called magma. When it's out, it's called lava.

Ans 4:

RISHABH from BHARATIYTA VIDYA BHAVAN, KOLKATA
Class : Class 10
ans should be b

Ans 5:

Soumyaraj Roy from Kendriya Vidyalaya , Thiruvananthapuram
Class : Class 7
Totally agree with you Mannat

Ans 6:

Hiyansh Jain from Podar International School, Mumbai
Class : Class 7
ok

Ans 7:

Athiya Mahapatra from ITL Public School, NewDelhi
Class : Class 5
From Athiya Mahapatra: option)c As the Upper layer of Earth is called Crust. The liquid which flows outside a volcano is called lava and Richter Scale is used to measure intensity of earthquakes.

Ans 8:

Agastya Tripathi from dps gurgaon, Gurgaon
Class : Class 4

Ans 9:

Hiyansh Jain from Podar International School, Mumbai
Class : Class 7

Ans 10:

SHREYAS ANANDHAN from Phoenix Greens International School, Hyderabad
Class : Class 6
nope you are telling the opposite

Ans 11:

Anantjit Chander from Apeejay School, Sector 15, Faridabad
Class : Class 10
I feel the (B) should be the correct answer, so please explain why (C) is the correct one.

Ans 12:

Mannat Verma from Vivek High School , Chandigarh
Class : Class 6
Volcano is an opening on the surface of Earth’s crust. There are three types of volcanoes: (i) Active volcanoes are those which are currently erupting or have erupted in the last 10,000 years. (ii) The dormant volcanoes are in a state of sleep. This means that they had erupted in the past but can erupt again, however, at the moment they are asleep. (iii) Extinct volcanoes are those that have been inactive for thousands of years and are not expected to erupt again. The liquid that comes out of a volcano is called lava. Richter scale measures magnitude of earthquakes and was developed by Charles Richter in 1935.

Ans 13:

RISHABH from BHARATIYTA VIDYA BHAVAN, KOLKATA
Class : Class 10
the answer is b

Ans 14:

Anantjit Chander from Apeejay School, Sector 15, Faridabad
Class : Class 10
Sorry, I had was to mark this one only, but instead of (C), I clicked on (B)!

Ans 15:

Biju Pappachan from Rkc , Raipur
Class : Class 1
The correct Ans is B and I did B but SOF is telling me I did C. Impossible and I am telling the truth I swear.

Post Your Answer

Sanjeev Garg from Assumption Convent School, malout
Subject :NSO    Class : Class 5

Ans 1:

INDRANI GHOSH ROY from AMRITA VIDYALAYAM, Durgapur
Class : Class 5
First of all, fish, crocodile and snakes, all these three are egg laying animals. Secondly, all of them are cold blooded animals. And thirdly, all of them are covered with scales. And therefore, statements 1, 2 & 3 are correct. That is why option C is correct.

Post Your Answer

YASH SAH from DELHI PUBLIC SCHOOL MIS DOHA, Doha
Subject :NSO    Class : Class 5

Ans 1:

Arnav kaul from Chirec, Hyderabad
Class : Class 2

Ans 2:

Niveideeta Cour from Suncity World School, Gurgaon
Class : Class 5
got a little confused here but sorted it out

Ans 3:

Trijash Maut from Delhi Public School Digboi, Digboi
Class : Class 6
YOYOYOYOOOO

Ans 4:

AREEN from BOLTON, HYDERABAD
Class : Class 6
Ans is C because 0 minutes was 20 degrees celsius. Then, we were adding 6 after 2, 4, 6 minutes and so on. 1 is half of 2, and 1+2=3. So we should take normally 26 degrees celsius+(Half of 6) degrees celsius=26 degrees celsius+3 degrees celsius=29 degrees celsius.

Ans 5:

YASH SAH from DELHI PUBLIC SCHOOL MIS DOHA, Doha
Class : Class 8
syu

Ans 6:

VAIBHAVH RAMESH from NARAYANA ETECHNO WHITEFIELD, BANGALORE
Class : Class 5

Post Your Answer

Siri B Patil from Indian School, Sohar, Oman, Sohar
Subject :NSO    Class : Class 5

Ans 1:

Arnav Vashisth from GD GOENKA PUBLIC SCHOOL, Delhi
Class : Class 5
Fishing rod changes speed of the fish

Ans 2:

Siddhant Singhania from The Assembly of God Church School, Purulia, Purulia
Class : Class 8

Ans 3:

Shreyansh Gupta from MVN, faridabad
Class : Class 7
Novosti

Ans 4:

Shaurya Shinde from Goldcrest High Vashi, Navi Mumbai
Class : Class 8
urenrjrjkvnm

Ans 5:

Tanmay kaushal from ICSE, Mumbai
Class : Class 5
Novosti

Ans 6:

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

Ans 7:

D Murari from Indian School of Excellence, Bangalore
Class : Class 9
Novosti

Ans 8:

Pratham Dave from GNS, Bangalore
Class : Class 7
Novosti

Post Your Answer

Shriram dindore from KVS 9BRD AFS PUNE, PUNE
Subject :NSO    Class : Class 8

Ans 1:

RISHABH from BHARATIYTA VIDYA BHAVAN, KOLKATA
Class : Class 10
shouldnt it be a

Ans 2:

Rakshit Mittal from Atomic energy central school 4, Mumbai
Class : Class 10

Ans 3: (Master Answer)

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

Ans 4:

Palchin from Naval public school, Uran
Class : Class 8
please explain

Ans 5:

Can I get Rank 35 darryl from Global Indian international school, Brawl stars
Class : Class 8

Ans 6:

Satvik Mehta from St Andrews school Bowenpally, Secunderabad
Class : Class 4
It should be a

Ans 7:

Chatresh ramasai gudi from Bgsnps , Bangalore
Class : Class 8

Post Your Answer

Matisha Kansal from Sacred Heart High School, Chd, Chandigarh
Subject :NSO    Class : Class 6

Ans 1:

Can I get Rank 35 darryl from Global Indian international school, Brawl stars
Class : Class 8

Ans 2:

Medha from Delhi Public School, Chd, Chandigarh
Class : Class 8
Answer is A (L) after the instruction the sequence is : N P S I L 4 W R 9 U F 7 S Y And then u get the answer

Post Your Answer

punyah from kvs happy valley, shillong
Subject :NSO    Class : Class 4

Ans 1:

Shreyansh Saha from Dps Megacity, Kolkata
Class : Class 6
Option D

Ans 2:

shreyash rawat from podar international school, pune
Class : Class 8
its [D]

Ans 3:

Devansh from asn senior secondary school, delhi
Class : Class 8
its [D]

Ans 4:

Swarnava Pal from Vivekananda Mission School, Haldia
Class : Class 8

Ans 5:

Daivik Goel from Delhi public school , Vadodara
Class : Class 4
The correct option is -(D)

Ans 6:

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

Ans 7:

RAGHAV VARSHNEY from CITY MONTESSORI SCHOOL GOMTINAGAR LUCKNOW, Lucknow
Class : Class 7

Ans 8:

Aarvi Gosai from The New Tulip International School, Ahemdabad
Class : Class 5
A

Ans 9:

Isra Fathima from sophia high school, Bengaluru
Class : Class 7

Post Your Answer

Nilanjana De from Delhi Public School North, Bengaluru
Subject :NSO    Class : Class 7

Ans 1:

Avaneesh Sai Vemparala from The knowledge habitat, Pune
Class : Class 3
Sludge settles down while scum stays up

Ans 2:

UTKARSH SAWARN from AIR FORCE SCHAOOL AMBALA CANTT, AMBALA CANTT
Class : Class 8

Ans 3:

AISHA from K.V.No.-1,A.F.S.,SEC.-14, GURUGRAM
Class : Class 10
CSEDIMENTATIONSCUM.SLUDGE

Ans 4:

Chaitanya L K from SKCHEC, bangalore
Class : Class 8
yeah...sludge settles and scum floats.

Ans 5:

AISHA from K.V.No.-1,A.F.S.,SEC.-14, GURUGRAM
Class : Class 10
SCUM,SLUDGE.

Ans 6:

UTKARSH SAWARN from AIR FORCE SCHAOOL AMBALA CANTT, AMBALA CANTT
Class : Class 8
SLUDGE IS THE SOLID WASTE

Ans 7:

Medha Bhutani from Christ Academy, Bengaluru
Class : Class 9
chlorine and UV rays are tertiary treatment

Ans 8:

DIVYA PRAKASH from ST.MICHAEL'S HIGH SCHOOL, PATNA
Class : Class 8
good

Ans 9:

Anshuman D from MVM, Hyderabad
Class : Class 9
Sludge settles while scum floats .you are right

Post Your Answer

SHREYAS ANANDHAN from Phoenix Greens International School, Hyderabad
Subject :NSO    Class : Class 5

Ans 1:

swami shriramji from ST. ANN'S SCHOOL , beed
Class : Class 6
no b not cccccccccccccccccccccccccccccccccccccccccccccccccccccccccccc

Ans 2:

Shubham Majhi from Sri Chaitanya Techno School, Bangalore
Class : Class 5
D

Ans 3:

swami shriramji from ST. ANN'S SCHOOL , beed
Class : Class 6

Ans 4:

Fareeha siddiqua from Janki Devi public school , Mumbai
Class : Class 5
it is B got it correct

Ans 5:

Parijaat waghmare from Centre point school international, Nagpur
Class : Class 5

Ans 6:

Satvik Agrawal from Delhi Public School, bhopal
Class : Class 5
,bbb,bbb,sing it is bbbb,

Ans 7:

samanvay sinha from School of India, Bangalore, bengaluru
Class : Class 7
It is option C because hair and spines are different

Ans 8:

Amit kumar dash from Soon international school , BHUBANESWAR
Class : Class 5
D

Ans 9:

Tanmay kaushal from ICSE, Mumbai
Class : Class 5
Class : its b easy

Post Your Answer