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

Ans 1:

Pritisha priya from Global Indian International School, Abu Dhabi, Abu Dhabi
Class : Class 8
C.Mechanical, Kinetic

Ans 2:

from ,
Class :
mechanical,kinetic (c)

Ans 3:

from ,
Class :
mechanical into kinectic

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from ,
Class :
Its option (c), mechanical into kinetic

Ans 5:

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

Ans 6:

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

Ans 7:

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

Ans 8:

Tanvi from hh, delhi
Class : Class 8
Hey, anyone wants to explain to me why it is option C?

Ans 9:

from ,
Class :
c

Ans 10:

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

Ans 11:

from ,
Class :
c

Ans 12:

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 13:

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

Ans 14:

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

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

Ans 1:

from ,
Class :
The correct answer is d.

Ans 2:

Saatviki from Ryan International School, PUNE
Class : Class 6

Ans 3:

anu from Haralur, Bengaluru
Class : Class 5
D;none of these

Ans 4:

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

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

Ans 1: (Master Answer)

from ,
Class :

The correct answer is A.


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from ,
Subject :NSO    Class : Class 5

Ans 1:

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 2:

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 3:

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 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:

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

Ans 6: (Master Answer)

from ,
Class :

The correct answer is C.

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


Ans 7:

arulmozhi ramesh from Kv, Coimbatore
Class : Class 9

Ans 8:

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

Ans 9:

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

Ans 10:

Ashwak from Cambridge, Jalandhar
Class : Class 9
The correct answer is CRhinoceros does not have scales on body while snake, lizard and fish have scales as body covering

Ans 11:

Shreeya Mangla from ASN Senior Secondary School, New Delhi
Class : Class 9
Snake, lizard and fish have scales as body covering while rhinoceros doesn't. Hence the correct answer is C

Ans 12:

Shloka Kulkarni from Pawar Public School, Nanded City, Pune
Class : Class 6
Ans is C

Ans 13:

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

Ans 14:

from ,
Class :
Do lizards really have scales? I don't think so.

Ans 15:

Ashwak from Cambridge, Jalandhar
Class : Class 9
The correct answer is CRhinoceros does not have scales on body

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Ayush Das from Griffins international school , Midnapur
Subject :NSO    Class : Class 4

Ans 1: (Master Answer)

from ,
Class :
To get a complete range of Olympiad Preparation Products (including previous years papers) log on to WWW.mtg.in, content partner for SOF Olympiads. For more details visit our website- details available on www.sofworld.org

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sarag bordoloi from dps numaligarh, golaghat
Subject :NSO    Class : Class 6

Ans 1:

Ashwak from Cambridge, Jalandhar
Class : Class 9
I agree with ARUNAV

Ans 2: (Master Answer)

from ,
Class :
The backbone or the vertebral column is a long, bony, rod–like structure, which extends from the base of the skull to the lower back. The animals which possess the backbone are called vertebrates and the ones which do not possess it are called invertebrates. Ant, spider, octopus, amoeba and starfish, are all invertebrates.So, the answer is B. Amoeba does not lay eggs. It is an unicellular organism which divide by binary fission.

Ans 3:

Bhavtosh Tripathi from Maneckji Cooper Education Trust School, Mumbai
Class : Class 9
amoeba divides itself it does not lay eggs. they all lACK A BACKBONE

Ans 4:

ARUNAV from DPS VINDHYANAGAR, VINDHYANAGAR
Class : Class 10
admin , who are you ? why you do not tell your real name ?

Ans 5:

Ayan Vohra from Bhavan Vidyalaya , Chandigarh, chandigarh
Class : Class 8
GIMME GIMME THE ANS

Ans 6:

Manvi Mundepi from Montfort School Roorkee, Roorkee
Class : Class 9
The backbone or the vertebral column is a long, bony, rod–like structure, which extends from the base of the skull to the lower back. The animals which possess the backbone are called vertebrates and the ones which do not possess it are called invertebrates. Ant, spider, octopus, amoeba and starfish, are all invertebrates.So, the answer is B. Amoeba does not lay eggs. It is an unicellular organism which divide by binary fission.

Ans 7:

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

Ans 8:

Anshuman Mishra from kv no 3, Bhubaneswar
Class : Class 7
the ans is b

Ans 9:

arshi.jain4004@gmail.com from ,
Class : Class 1

Ans 10:

Ayan Vohra from Bhavan Vidyalaya , Chandigarh, chandigarh
Class : Class 8
why is everyone talking about animals?! I got a question about plants specifically complete and incomplete flowers. SOF PLEASE HELP ME HELP ME!!!!!!!!! AND THAT ADMIN IS COMPLETELY USELESS

Ans 11:

Souradeepto Das Mandal from Hyderabad Public School, Hyderabad
Class : Class 7
i agree with AYAAN VOHRA the admin is useless and the question is:which of the following is an example of incomplete flower?A) mulberryB) peaC) mustardD) hibiscusi chose (B) but sof said it's(A) and when i checked solutions it said" ." so I searched the forum but everyone(including the"admin")are talking about animals and amoeba.SOF PLS HELP!!!!!!!!!!!!

Ans 12:

Souradeepto Das Mandal from Hyderabad Public School, Hyderabad
Class : Class 7
AND THE ANSWER IS AND THE ANSWER IS (A) MULLBERRY as the other three have all the four whorls

Ans 13:

Aadvik saini from Mvn sector 17, Faridabad
Class : Class 8
ans is b

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from ,
Subject :NSO    Class : Class 10

Ans 1:

from ,
Class :
Since the residue obtained was black in colour and we know that only Zinc and Copper on reacting with Iron give a black residue hence the answer is Option D

Ans 2: (Master Answer)

from ,
Class :
Here, the answer is D. Black residue is obtained in test tubes I and III i.e., iron gets displaced in test tubes I and III. Therefore, metals P and R should be more reactive than iron. No change is observed in test tubes II and IV hence, metals Q and S should be less reactive than iron.

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from ,
Subject :NSO    Class : Class 10

Ans 1: (Master Answer)

from ,
Class :
Here, the answer is D. The method used to extract metals from the ore in which they are found depends on their reactivity. For example, reactive metals such as aluminium are extracted by electrolysis, while a less-reactive metal such as iron may be extracted by reduction with carbon or carbon monoxide. The metals low in the reactive series are very less reactive. The oxides of such metals can be reduced to metals by heating alone e.g. mercury is obtained from its ore, cinnabar (HgS), by the process of heating. Metals like iron, zinc, lead etc. occur as sulphides or carbonates in nature. First the ore is converted into its oxide form This is done by either roasting or by calcination. The metal oxide is reduced to metal by using suitable reducing agent such as Carbon.

Ans 2:

from ,
Class :
Option D

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gayathri from NPS, Bengaluru
Subject :NSO    Class : Class 5

Ans 1:

KONDURU TEJESH from Sri chaitanya international school, Bangalore
Class : Class 4
mine every ans is correct but i obtained only 4/5!

Ans 2:

Aaditya Gandhi from Heritage Experiential Learning School, Gurgaon
Class : Class 5
bruh

Ans 3:

SIDDHARTH KUMAR CHATTERJEE from NAVY CHILDREN SCHOOL , CHICALIM
Class : Class 7
@Ananjit Chander, Because Xanthium is dispersed by animals, not explosions.

Ans 4:

Anantjit Chander from Apeejay School, Sector 15, Faridabad
Class : Class 10
By why not (C)?

Ans 5:

akshaj das from NARAYANA E TECHNO kaggdaspura, Bengaluru
Class : Class 8

Ans 6:

shubhavi Dhondge from NPS, Banagalore
Class : Class 9

Ans 7:

bengaluru from DA, Bengaluru
Class : Class 6

Ans 8:

somesh from Centre point katol road, Nagpur
Class : Class 6
C is dispersed by animals not by explosion

Ans 9:

Vishnuteja V from BVBARRS, Hyderabad
Class : Class 6
A - Cocklebur : Dispersed by animalB - Hiptage : Dispersed by windC - Dandelion : Dispersed by windD - Coconut : Dispersed by water

Ans 10:

Aaditya Malhotra from Isaac Newton Global School, Mumbai
Class : Class 3

Ans 11: (Master Answer)

from ,
Class :
Here, Option A shows - Dandelion which is dispersed by wind Option B shows - Lotus which is dispersed by water Option C shows - Xanthium which is dispersed by animals Option D shows - Pea which is dispersed by explosion So, the answer is B.

Ans 12:

Aaditva from Vasant Valley School, New Delhi
Class : Class 6
iub9u-jinjbh p8huuhikitmujipy ijogijodigdj;' h/mhykfcx

Ans 13:

Aditya Basera from Teoler High School, Jaipur
Class : Class 8
bbbbbbbbbbbbbbbbbbbbbbBBBBBBBBBBBBBBBBBBBBbbbbbbbbbbbb

Ans 14:

Tanishka Laha from Euroschool, Bengaluru
Class : Class 5
Option A shows - Dandelion, dispersed by animals B shows- Lotus seeds, dispersed by water C shows- Xanthium , dispersed by explosion And, D shows- Peas, dispersed by wind.Among these, only option B , which is ' lotus seeds, dispersed by water' is correct, therefore option B is the correct answer.

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from ,
Subject :NSO    Class : Class 10

Ans 1: (Master Answer)

from ,
Class :
Here, the answer is (d). The right hand rule can be used to determine the direction of the force on a current-carrying wire placed in an external magnetic field.

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