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

Ans 1: (Master Answer)

Admin from revisewise, Noida
Class : Class 1
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:

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 2:

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

Ans 3:

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 4:

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 5:

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

Ans 6:

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

Ans 7:

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

Ans 8:

Souradeepto Das Mandal from Hyderabad Public School, Hyderabad
Class : Class 6
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 9:

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

Ans 10:

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

Ans 11:

Souradeepto Das Mandal from Hyderabad Public School, Hyderabad
Class : Class 6
AND THE ANSWER IS AND THE ANSWER IS (A) MULLBERRY as the other three have all the four whorls

Ans 12:

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

Ans 13: (Master Answer)

Admin from revisewise, Noida
Class : Class 1
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.

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Nupur Sangwai from Podar International Parbhani, JINTUR
Subject :NSO    Class : Class 10

Ans 1:

Anvesha Dubey from Lodha World School , Dombivali
Class : Class 5
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)

Admin from revisewise, Noida
Class : Class 1
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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Gireesha from innocent hearts school jalandhar, Jalandhar
Subject :NSO    Class : Class 10

Ans 1: (Master Answer)

Admin from revisewise, Noida
Class : Class 1
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:

Anvesha Dubey from Lodha World School , Dombivali
Class : Class 5
Option D

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

Ans 1:

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

Ans 2:

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

Ans 3:

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.

Ans 4:

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

Ans 5:

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

Ans 6:

Aaditva from Vasant Valley School, New Delhi
Class : Class 8
iub9u-jinjbh p8huuhikitmujipy ijogijodigdj;' h/mhykfcx

Ans 7: (Master Answer)

Admin from revisewise, Noida
Class : Class 1
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 8:

Aditya Basera from Teoler High School, Jaipur
Class : Class 7
bbbbbbbbbbbbbbbbbbbbbbBBBBBBBBBBBBBBBBBBBBbbbbbbbbbbbb

Ans 9:

shubhavi Dhondge from NPS, Banagalore
Class : Class 9

Ans 10:

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

Ans 11:

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

Ans 12:

bengaluru from DA, Bengaluru
Class : Class 5

Ans 13:

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 14:

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

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Gireesha from innocent hearts school jalandhar, Jalandhar
Subject :NSO    Class : Class 10

Ans 1: (Master Answer)

Admin from revisewise, Noida
Class : Class 1
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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Pratik parv from Apeejay international school greater Noida, Greater Noida
Subject :NSO    Class : Class 2

Ans 1: (Master Answer)

Admin from revisewise, Noida
Class : Class 1
Kindly mention your query

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ved surushe from Royal International School, DOMBIVLI
Subject :NSO    Class : Class 8
hi

Ans 1: (Master Answer)

Admin from revisewise, Noida
Class : Class 1
Kindly mention your query

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Mohi from Vibgyor, Bangalore
Subject :NSO    Class : Class 3

Ans 1:

Thanya Anand Kumar from ISWKi , Muscat
Class : Class 6
THROUGH NERVES WHICH CARRY THE PAIN STIMULUS

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Aarush Laddha from NCFE, bengaluru
Subject :NSO    Class : Class 6

Ans 1:

Parth Kaushish from MDPS, Faridabad
Class : Class 6
its c as transparent object 1 will allow light ti pass. opaque object 2 wont allow anything to pass and will make a patch of light and the last could be anything

Ans 2:

amogh from DELHI PUBLIC SCHOOL NOIDA, Ghaziabad
Class : Class 6
correct answer is C

Ans 3:

Parth Kaushish from MDPS, Faridabad
Class : Class 6
it could be b too as it is not clear that if it has any problem in it like hazy r said if its clear

Ans 4:

Aarnav Grover from Anand Niketan Shilaj, Ahmedabad
Class : Class 9
c

Ans 5:

Manvi Mundepi from Montfort School Roorkee, Roorkee
Class : Class 9
IF [I] WILL BE TRANSPARENT ,AS WE KNOW THAT THE MATERIALS WHICH ALLOW LIGHT TO PASS THROUGH THEM ARE CALLED TRANSPARENT SO IF WE CUT OUT A SQUARE TRANSPARENT SHEET FROM A ROLL OF TRANSPARENT ,SURELY THE LIGHT PATCH WILL PASS THROUGH[II]THEN THE [II] MATERIAL SHOULD BE SOMETING WHICH CAN NOT ALLOW LIGHT TO PASS TROUGH IT IT SHOULD BE OPAQUE AND THE LAST SQUARE[III] CAN BE MADE OUT FROM ANY MATERIAL,THUS IT WILL NOT CHANGE THE ANSWER.SO WE CONCLUDE THE CORRECT ANSWER IS C

Ans 6:

Ashmi Narkar from The Shishukunj International School, Jhalaria Campus, Indore
Class : Class 9
SOF I had given C how you show that I gave B???

Ans 7:

Gauri Singh from St Johns School Marhauli, Varanasi
Class : Class 8
No, the right answer is opt. c because if II is translucent, then it will NOT GET A CLEAR BRIGHT SPOT but a hazy one.

Ans 8:

Gauri Singh from St Johns School Marhauli, Varanasi
Class : Class 8
No, the right answer is opt. c because if II is translucent, then it will NOT GET A CLEAR BRIGHT SPOT but a hazy one.

Ans 9:

Anshuman Mishra from kv no 3, Bhubaneswar
Class : Class 7
to my knowledge the ans is c

Ans 10:

Manvi Mundepi from Montfort School Roorkee, Roorkee
Class : Class 9
c

Ans 11:

Anshuman Mishra from kv no 3, Bhubaneswar
Class : Class 7
to my knowledge the ans is c

Ans 12:

Kanishk Mukherjee from BDM International, Kolkata
Class : Class 6

Ans 13:

Sai Laasya G from GIIS, Abu Dhabi
Class : Class 8
option c

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