National Science Olympiad Forum By SOF Olympiad Trainer - Page 654
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Aman Sumesh from Apeejay School, Kharghar
Subject :NSO    Class : Class 7

Ans 1:

Nitin Shekhar from K V GERUKAMUKH, DHEMAJI
Class : Class 9
The correct answer is (c) runners.

Ans 2:

Nitin Shekhar from K V GERUKAMUKH, DHEMAJI
Class : Class 9
The correct answer is (c) runners.

Ans 3:

Amal Sumesh from Adani Public School, Mundra
Class : Class 8
Answer is B A : Climber moves upwards along with the support of other plant or wall. B : Runner are stems that form adventitious roots at the nodes and new plants from the buds. C : Tendril is a specialized stem,leaf or petiolr with a thread like shape used for support by climbing plants. D : Bulbil is a bulb like structure in axil of a leaf which may fall to form a new plant.

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kanchan rathi from DPS Bhilai, Durg
Subject :NSO    Class : Class 5

Ans 1:

Mannat Verma from Vivek High School , Chandigarh
Class : Class 6

Ans 2:

Gauri Singh from St Johns School Marhauli, Varanasi
Class : Class 8
i think it's opt.d

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Priyanshu Gupta from Ryan International School , Kandivali Mumbai
Subject :NSO    Class : Class 9

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Asmi Inamdar from KV IIT , Mumbai
Subject :NSO    Class : Class 3

Ans 1: (Master Answer)

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

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Swati from Ryan, Bengaluru
Subject :NSO    Class : Class 5

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ANANYA.KUMAR from DPS Noida, Noida
Subject :NSO    Class : Class 5

Ans 1:

arya navare from Saint ursula school, kankavli
Class : Class 5

Ans 2:

Arav from Shishukunj International, Indore
Class : Class 7
The correct option is C as all compasses are controlled by Earth's magnetic field.

Ans 3:

Sanskriti Nagar from Rose Bud Academy, khagaria
Class : Class 5
C is the answerIf you open synopsis in this chapter,it is clearly written that a compass works with the help of earth's magnetic field

Ans 4:

Shraddha S Nair from Bright CBSE, Day school vasna, Vadodara
Class : Class 7
ANSWER SHOULD BE C

Ans 5:

Gauri Singh from St Johns School Marhauli, Varanasi
Class : Class 8
Earth's magnetic field.

Ans 6:

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

Ans 7:

Koustavi Chakraborty from DELHI PUBLIC SCHOOL, PUNE
Class : Class 5
answer is option c

Ans 8:

Biju Pappachan from Rkc , Raipur
Class : Class 1
If u don’t understand after reading the solution tell Siri to explain u

Ans 9:

Pratiksha Panda from Sri Kumaran's School, Bangalore
Class : Class 5
sanskriti nagar is correct

Ans 10:

Akshita Krishnan from DPS Noida, Noida
Class : Class 8
I still don't understand this question after reading the solution.😬😱

Ans 11:

RAMAYANI PAKHARE from S M SHETTY HIGH SCHOOL, MUMBAI
Class : Class 6
Earth's magnetic field (C)

Ans 12:

Deepika Goyal from Neerja modi school, Jaipur
Class : Class 7
C (EARTH'S MAGNETIC FIELD)

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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:

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

Ans 3:

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

Ans 4:

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

Ans 5:

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 6:

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

Ans 7:

Arnav Raj Sharma from The gulibilium school, Gurgaon
Class : Class 9
please explain

Ans 8:

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 9:

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

Ans 10:

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

Ans 11:

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

Ans 12:

rethish from Veltech, Avadi
Class : Class 3

Ans 13:

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 14:

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

Ans 15:

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

Ans 16:

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

Ans 17:

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

Ans 18:

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

Ans 19:

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

Ans 20:

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

Ans 21:

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

Ans 22:

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

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

Ans 1:

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.

Ans 2:

Agastya Tripathi from dps gurgaon, Gurgaon
Class : Class 4

Ans 3:

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

Ans 4:

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 5:

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

Ans 6:

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

Ans 7:

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

Ans 8:

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 9:

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 10:

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 11:

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

Ans 12:

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

Ans 13:

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 14:

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

Ans 15:

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

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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.

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

Ans 1:

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

Ans 2:

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

Ans 3:

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

Ans 4:

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

Ans 5:

Arnav kaul from Chirec, Hyderabad
Class : Class 2

Ans 6:

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.

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