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

Ans 1:

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

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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.


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

Ans 1:

arulmozhi ramesh from Kv, Coimbatore
Class : Class 4

Ans 2:

Neelesh Dutta from Innocent Hearts School, JALANDHAR
Class : Class 5
The correct answer is CRhinoceros does not have scales on body while snake, lizard and fish have scales as body covering

Ans 3:

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

Ans 4: (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 5:

Neelesh Dutta from Innocent Hearts School, JALANDHAR
Class : Class 5
The correct answer is CRhinoceros does not have scales on body

Ans 6:

arulmozhi ramesh from Kv, Coimbatore
Class : Class 4
Snakes can peel their skin of while the others can’t

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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:

Manvi Mundepi from Montfort School Roorkee, Roorkee
Class : Class 7
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 2:

Anshuman Mishra from kv no 3, Bhubaneswar
Class : Class 6
the ans is b

Ans 3:

Bhavtosh Tripathi from Maneckji Cooper Education Trust School, Mumbai
Class : Class 7
amoeba divides itself it does not lay eggs. they all lACK A BACKBONE

Ans 4: (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

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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:

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

Ans 2: (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.

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

Ans 1: (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 2:

akshaj das from NARAYANA E TECHNO kaggdaspura, Bengaluru
Class : Class 5

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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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