National Science Olympiad Forum By SOF Olympiad Trainer - Page 536
  1. Home
  2. /  Forum

User Forum

Ask Your Question
Arnav Raj Sharma from GEMS International School the ultra master mega, Gurgaon
Subject :NSO    Class : Class 6

Which of the following statements is correct ?
(i) The response of plant towards the Earth is called phototropism .
(ii) The ability of certain animals to blend with the surrounding, making them difficult to spot is called camouflage.
(iii) Whales and dolphins breathe in oxygen from water through gills.
(iv) Hibernation is an adaptation for escaping hot weather.

A(i) and (ii)
B(ii) and (iv)
C(i) and (iv)
D(iii) and (iv)


escaping hot weather is called aestivation . hibernation is escaping from cold weather .

Ans 1:

Shourya Ganesh from The Green Acres Academy, Mumbai
Class : Class 9
Statement 4 is wrong because hibernation is done to escape cold weather not hot , so SOF is wwwwwwwwwwrrrrrrrrrrrrrrrrrrrooooooooooooooonnnnnnnnnnnnnnnngggggggggggggggggggg

Ans 2:

Dipam from Podar International School, Aurangabad
Class : Class 8
YES The correct answer is (A).

Ans 3:

Ridit Mishra from Delhi Public School, Gurgaon
Class : Class 8
Yes none of the options are correct

Ans 4:

Ridit Mishra from Delhi Public School, Gurgaon
Class : Class 8
According to me Statement 2 is correct

Ans 5:

KEERTHANA SHIBU from INDIAN SCHOOL GHOUBRA, Oman
Class : Class 7
sof wrong ans there should be option like:only ii is correct

Ans 6:

Vidwat Amal from Podar International School , Anand
Class : Class 8
statement 4 is wrong and none of the options is correct as response of plants towards earth is called geotropism

Ans 7:

Manvi Mundepi from Montfort School Roorkee, Roorkee
Class : Class 9
I WANT EXPLAINATION

Ans 8:

Karthik from Euro, Bengaluru
Class : Class 7
sof is wwwwwwwwwwwwwwwwwwwrrrrrrrrrrrrrrrrrrrrrrrrrroooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooonnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnngggggggggggggggggggggggggggggggggggggggggggg

Ans 9:

SOUVAGYA SAHA from De Nobili School, DHANBAD
Class : Class 9
here all the statements are wrong except 3rd statement

Ans 10:

Shuvangi Das from Vivekananda mission school, haldia
Class : Class 9
option 4 if wrong. pls Chk soF other thn that all are correct .

Ans 11:

Snigdha swaminath from Christ nagar higher secondary school , Trivandrum
Class : Class 7
The answer is wrong

Ans 12:

Daksh Kumar from GCIS, Bangalore
Class : Class 7
THE CORRECT ANSWER IS A

Ans 13:

Sanskar Jaiswal from Rungta Public School, Bhilai
Class : Class 9
bot

Ans 14:

MInnal Senthil from Prakriya, Bangalore
Class : Class 5
not a because The response of plant towards the sun is called phototropism

Ans 15:

Ridit Mishra from Delhi Public School, Gurgaon
Class : Class 8

Ans 16:

santosh katiyar from narayana vidhyalayam, Nagpur
Class : Class 7
THE CORRECT ANSWER IS (A)

Ans 17:

SOUVAGYA SAHA from De Nobili School, DHANBAD
Class : Class 9
here , statement 1 , 3

Ans 18:

Medha Bijjaram from Prime Academy, Mumbai
Class : Class 9

Ans 19:

Parshti Bajpai from Modern Public School, ALWAR
Class : Class 7
Hibernation is done in winters not summers so OPTION A IS CORRECTTTTTT

Ans 20:

Goldilocks from Sharada Mandir School, Miramar, Panjim, Goa, Panjim Goa
Class : Class 8
Okay manvi

Ans 21:

Iba khan from DPS GBN, Noida
Class : Class 6
none of the options are correct as the only correct statement mentioned here is (ii)

Ans 22:

Ridit Mishra from Delhi Public School, Gurgaon
Class : Class 8
Option A is Wrong

Ans 23:

Aarya Singh from Indian School Ghubra, Muscat
Class : Class 3
none of the options are correct

Ans 24:

Goldilocks from Sharada Mandir School, Miramar, Panjim, Goa, Panjim Goa
Class : Class 8
none of the answers are correct

Post Your Answer

VAIBHAV KALVAKOTA from THE LEXICON INTERNATIONAL SCHOOL WAGHOLI, PUNE
Subject :NSO    Class : Class 8

Ans 1:

Anirudh from Kendriya Vidyalaya Kanjikode, Palakkad
Class : Class 8
All the properties friction are in use. Hence, the correct one option 'D'.

Ans 2:

Arnav Raj Sharma from GEMS International School the ultra master mega, Gurgaon
Class : Class 7
The Options Are wrong I guess because only (i),(ii)and(iii) are in use

Ans 3:

VAIBHAV KALVAKOTA from THE LEXICON INTERNATIONAL SCHOOL WAGHOLI, PUNE
Class : Class 8

Ans 4:

Hprakash09 from Billabong high Bhopal, Bhopal
Class : Class 7
The answer is correct, as when friction occurs, obviously, all of its properties will occur, even if not all of the properties are required. That's... how friction works.

Ans 5:

Student from School, City
Class : Class 5
The Options Are wrong because only 123 are in use.

Ans 6:

Student from School, City
Class : Class 5
The Options Are wrong because only 123 are in use.

Ans 7:

Adhrit from CHSV, Chennai
Class : Class 8
It's not asking about which properties occur (which would be all of them), it's asking which are in use. And that's only 1, 2, and 3. So the options are wrong

Post Your Answer

VAIBHAV KALVAKOTA from THE LEXICON INTERNATIONAL SCHOOL WAGHOLI, PUNE
Subject :NSO    Class : Class 8

Ans 1: (Master Answer)

Admin from revisewise, Noida
Class : Class 1

The correct answer is C.


Post Your Answer

shaurya chitriki from delhi public school north, bangalore
Subject :NSO    Class : Class 3

Ans 1:

Mohi from Vibgyor, Bangalore
Class : Class 6
B) 2 and 3

Post Your Answer

Dheeraj from Sri Sri Ravishankar Vidya Mandir, Bangalore
Subject :NSO    Class : Class 7

Ans 1: (Master Answer)

Admin from revisewise, Noida
Class : Class 1

Mass is the amount of matter present in an object whereas weight is the force exerted by the gravity on that object.

Now, the weight of an object, W = g X m, where 'g' is Earth's gravitational constant and 'm' is the mass of the object.

The weight of the object will remain constant as long as the mass of that object is not changing since 'g' is constant. However, the weight of an object can still be changed without changing the mass. This can be explained by the following example: Consider a helicopter with a mass, 'm'.

1. If the helicopter is accelerated towards the earth (during landing) with an acceleration equals to 'A' (positive acceleration) then its weight would become, W = (g + A) X m,  and hence, the weight would increase.

2.  If the helicopter is accelerated away from the earth (during take-off) with an acceleration equals to '- A' (negative acceleration) then its weight would become, W = (g - A) X m,  and hence, the weight would decrease.


Post Your Answer

Dheeraj from Sri Sri Ravishankar Vidya Mandir, Bangalore
Subject :NSO    Class : Class 7

Ans 1: (Master Answer)

Admin from revisewise, Noida
Class : Class 1

Mass is the amount of matter present in an object whereas weight is the force exerted by the gravity on that object.

Now, the weight of an object, W = g X m, where 'g' is Earth's gravitational constant and 'm' is the mass of the object.

The weight of the object will remain constant as long as the mass of that object is not changing since 'g' is constant. However, the weight of an object can still be changed without changing the mass. This can be explained by the following example: Consider a helicopter with a mass, 'm'.

1. If the helicopter is accelerated towards the earth (during landing) with an acceleration equals to 'A' (positive acceleration) then its weight would become, W = (g + A) X m,  and hence, the weight would increase.

2.  If the helicopter is accelerated away from the earth (during take-off) with an acceleration equals to '- A' (negative acceleration) then its weight would become, W = (g - A) X m,  and hence, the weight would decrease.


Post Your Answer

ansh rai from delhi public school, Bhilai
Subject :NSO    Class : Class 5

Ans 1:

shreedhar from the shri ram school, delhi
Class : Class 5
mechanical,kinetic (c)

Ans 2:

Poulami Dan from Aditya Academi, Kolkata
Class : Class 5
c

Ans 3:

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

Ans 4:

Pratham Dave from GNS, Bangalore
Class : Class 7
Mechanical into kinetic energy.

Ans 5:

Tanvi from hh, delhi
Class : Class 5
Hey, anyone wants to explain to me why it is option C?

Ans 6:

NAISHA JAJWARE from dps noida, noida
Class : Class 5
c

Ans 7:

Ishani Gandhi from Lourdes convent school, Surat
Class : Class 6
In the options, it is written wrong because it is mechanical , kinetic energy. Instead of that it should be muscular, kinetic energy

Ans 8:

Niveideeta Cour from Suncity World School, Gurgaon
Class : Class 5
mechanical into kinectic

Ans 9:

Biju Pappachan from Rkc , Raipur
Class : Class 1
Wanna explain why?

Ans 10:

Harsh Sobti from the samhita academy, BLR
Class : Class 5

Ans 11:

RISHABH from SUMMER FIELD, GURGAON
Class : Class 5
c

Ans 12:

Shreetej from Pearson public school, Pune
Class : Class 5
Its option (c), mechanical into kinetic

Ans 13:

Pritisha priya from Global Indian International School, Abu Dhabi, Abu Dhabi
Class : Class 6
C.Mechanical, Kinetic

Ans 14:

Saiprajna Panda from Kendriya Vidyalaya, Central University of rajasthan, Kishangarh
Class : Class 5
actually it is written wrong

Post Your Answer

swagatika from giis, BENGALURU
Subject :NSO    Class : Class 2

Ans 1:

Mahi Chandra from ICON School of Excellence, Bengaluru
Class : Class 3
Mahi from Icon School Of Excellence, BengaluruClass:2D;none of these

Ans 2:

anu from Haralur, Bengaluru
Class : Class 4
D;none of these

Ans 3:

Ipshita from VIBGYOR, Bengaluru
Class : Class 1
The correct answer is d.

Ans 4:

Saatviki from Ryan International School, PUNE
Class : Class 6

Post Your Answer

ansh rai from delhi public school, Bhilai
Subject :NSO    Class : Class 5

Ans 1: (Master Answer)

Admin from revisewise, Noida
Class : Class 1

The correct answer is A.


Post Your Answer

Sai srikar from Mitra academy, Bangalore
Subject :NSO    Class : Class 5

Ans 1:

Biju Pappachan from Rkc , Raipur
Class : Class 1
Only this question I got wrong

Ans 2:

Biju Pappachan from Rkc , Raipur
Class : Class 1
Honestly, if you ask me,I chose snake as the answer because they can peel of their skin while the others can’t. So,Arumolzhi Ramesh I was thinking the same thing. But SOF and most of you guys say that the correct answer is C Rhinoceros as they do not have scales while the other three do. So it must be correct although I did not know lizards had scales on their bodies but as a matter of fact, they do so C must be the correct answer.

Ans 3: (Master Answer)

Admin from revisewise, Noida
Class : Class 1

The correct answer is C.

Rhinoceros does not have scales on body while snake, lizard and fish have scales as body covering.


Ans 4:

Arnesh from DPS Mathura Road , New Delhi
Class : Class 7
Correct is c because rhino does not have scales while others do

Ans 5:

Biju Pappachan from Rkc , Raipur
Class : Class 1
Google says lizards have scales.

Ans 6:

Mohhika Sharma from Delhi Public School Greater Noida, Noida
Class : Class 5
I chose snake too, so Biju Pappachan and Arumolzhi Ramesh, I have the same thought process- it sheds its skin.

Ans 7:

Ashwak from Cambridge, Jalandhar
Class : Class 8
The correct answer is CRhinoceros does not have scales on body

Ans 8:

Nilarka Pahari from Young Horizons School, Kolkata
Class : Class 4
Do lizards really have scales? I don't think so.

Ans 9:

VISHNU from NARAYANA OLYMPIAD GOPALAPURAM, chennai
Class : Class 5
I ticked the answer as D because fish have gills but the others dont

Ans 10:

Ashwak from Cambridge, Jalandhar
Class : Class 8
The correct answer is CRhinoceros does not have scales on body while snake, lizard and fish have scales as body covering

Ans 11:

arulmozhi ramesh from Kv, Coimbatore
Class : Class 9
Snakes can peel their skin of while the others can’t

Ans 12:

Shreeya Mangla from ASN Senior Secondary School, New Delhi
Class : Class 7
Snake, lizard and fish have scales as body covering while rhinoceros doesn't. Hence the correct answer is C

Ans 13:

from harvest,
Class : Class 5
The correct answer is CRhinoceros doesn't have scales on their body while snake, lizard and fish have scales as body coveing

Ans 14:

arulmozhi ramesh from Kv, Coimbatore
Class : Class 9

Post Your Answer