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asher.pedamuthevi from CAL PUBLIC SCHOOL, Hyderabad
Subject :NSO    Class : Class 5

Ans 1:

Soundharya from ISWK, Muscat
Class : Class 8
Diamond is the hardest material according to the Mohs scale.

Ans 2:

DEVANSHI MALHOTRA from DPS Noida, Noida
Class : Class 5
diamond is the hardest mineral according to mohs scale and talc is the softest mineral

Ans 3:

Tanvi Ritisha Dash from delhi public school bangalore east, Bengaluru
Class : Class 6
diamond

Ans 4:

ratankrmandal@yahoo.com from Vivekananda Mission School, Haldia
Class : Class 7
According to moh's scale- 1.diamond 2.corundum 10.talc

Ans 5:

Preetham Sivalingam from Delhi Public School Bangalore East, Bengaluru
Class : Class 7
Diamond is the hardest material according to the Mohs scale as it is ranked 10.Talc is the softest material as it is marked 1.(There are only 10 points!)

Ans 6:

asher.pedamuthevi from CAL PUBLIC SCHOOL, Hyderabad
Class : Class 6
The hardest material according to Mohs scale is diamond.

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asher.pedamuthevi from CAL PUBLIC SCHOOL, Hyderabad
Subject :NSO    Class : Class 5

Ans 1:

asher.pedamuthevi from CAL PUBLIC SCHOOL, Hyderabad
Class : Class 6
To find the density of an object,it is the 1/2 or half weight of an object.

Ans 2:

Dhiraj Bilwal from vibgyor high, Pune
Class : Class 5
it is 1/2 weight of an object

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ARNAV GARG from PRUDENCE SCHOOL, New Delhi
Subject :NSO    Class : Class 4

Ans 1:

Nandana from St Thomas Residential School, Trivandrum
Class : Class 8
Anti-lock braking system

Ans 2:

USHASHI CHAKRABARTI from INDUS VALLEY WORLD SCHOOL, CALCUTTA
Class : Class 6
anti-lock braking system is the full form of ABS.

Ans 3:

Shriyans from DPS Raipur, Raipur
Class : Class 7
Anti lock breaking system

Ans 4:

ARNAV GARG from PRUDENCE SCHOOL, New Delhi
Class : Class 8
The answer anti breaking system shiyans

Ans 5:

A Andriya from Lalaji Memorial Omega International School, Chennai
Class : Class 8
Antilock Break system

Ans 6:

Shriyans from DPS Raipur, Raipur
Class : Class 7
Anti breaking system

Ans 7:

USHASHI CHAKRABARTI from INDUS VALLEY WORLD SCHOOL, CALCUTTA
Class : Class 6
The full form of ABS is Anti-lock Braking System.

Ans 8:

Dibyanshu Dibyajyoti Das from TATA DAV Public School, Joda,Keonjhar
Class : Class 5
Anti-lock Braking System

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shamyatha@gmail.com from smart minds academy, vadapalani
Subject :NSO    Class : Class 6

Ans 1:

Achintya k j from KENDRIYA VIDYALAYA GOLE MARKET, NEW DELHI
Class : Class 9
magnetic force

Ans 2:

SUBODH KUMAR from Delhi Public School, Bokaro
Class : Class 6
Magnetism is one of the fundamental properties of nature. While,the force possessed by a magnet ona any magnetic material is called magnetic force. Good question......

Ans 3:

deepanshu from Deens Acadamy, Bengaluru
Class : Class 6
the force of a magnet is called magnetic force .

Ans 4:

ramesh datta from DPS dwarka , New Delhi
Class : Class 7
the force of magnet is magnetic force. it comes in the type of non-contact forces (forces applied by one body on another without in actual contact).

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A Andriya from Lalaji Memorial Omega International School, Chennai
Subject :NSO    Class : Class 4

Ans 1:

Nandana from St Thomas Residential School, Trivandrum
Class : Class 8
a rounded swelling or protuberant part

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Satweek Pradhan from Pallavi Model School, Hyderabad
Subject :NSO    Class : Class 5

Ans 1:

Abhideep Jain from Delhi Public School, Amethi
Class : Class 7
There are 110 active volcanoes in Japan

Ans 2:

shyam narayan nayak from kendriya vidyalaya no-1 unit 9 BBSR, Bhubaneswar
Class : Class 5
There are about 110 live volcanos in japan..........

Ans 3:

Atulya tripathy from Delhi Public School, sector 45, Gurgaon
Class : Class 6
52

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Mayank Patel from Maharaja Agarsen Public School , Ghaziabad
Subject :NSO    Class : Class 8

Ans 1:

Aishwarya Dwivedi from St. John's School, Marhauli, Varanasi
Class : Class 9
Lenses have a different property. You are talking about two different cases. First is property of 'refraction', and second is the property of 'convex lens'. This question is not correlated.

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Abhay Tyagi from Billabong High International School, Noida
Subject :NSO    Class : Class 6

Ans 1:

SUBODH KUMAR from Delhi Public School, Bokaro
Class : Class 6
Basically in physics a magnet electrically charged posses a energy form called electromagnetic energy. This one posses a hole and a particle when made. Obviously particle will go in the hole and this is why electricity is defined as flow of electrons. Electromagnet is a temporally charged one used in MRI's, robots, etc.

Ans 2:

Lakshya Garg from DMI, Meerut
Class : Class 6
In the factories, Electromagnet is used to remove scrap iron from the waste. Electromagnet is fitted to a crane. When the operator switches it on by the electricity scrap iron is attracted towards the Electromagnet.

Ans 3:

Mukil from Delhi Public School, ROORKEE
Class : Class 6
a piece of soft iron is taken, and then a insulated copper wire is spun around the piece of soft iron about 100 times. now a battery is connected to the copper wire.the copper wire works with the help of a dry cell(DC).

Ans 4:

Abhay Tyagi from Billabong High International School, Noida
Class : Class 9
Thanks but that wasnt what i asked. How does it work??!!

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ARUNAV from DPS VINDHYANAGAR, VINDHYANAGAR
Subject :NSO    Class : Class 8

Ans 1:

Pratek Kashyap from St. Anthony's Secondary School, Faridabad
Class : Class 8
A cell having a proper nuclear membrane and a well defined and clearly visible nucleus is called an eukaryotic cell.

Ans 2:

Mayank Patel from Maharaja Agarsen Public School , Ghaziabad
Class : Class 8
the nucleus which have it nucler membrane is called eukaryotic

Ans 3:

swayam agrawal from Udgam school for children, Ahmedabad
Class : Class 8
An eukaryotic cell is a cell which is properly developed and well developed nucleus.It has a membrane around it called the nuclear membrane which separates it from the cytoplasm of the cell.The DNA is present in the nucleus.In case of prokaryotic cell there is scattered nuclear region called nucleoid region lacking a nuclear membrane.

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Lakshya Garg from DMI, Meerut
Subject :NSO    Class : Class 6

Ans 1:

Rohan from The Shri Ram School, New Delhi
Class : Class 6
because the earth is an upside down magnet the south pole is up and north pole is down.

Ans 2:

YAGYASHA RASTOGI from PRESIDIUM INDIRAPURAM, Ghaziabad
Class : Class 7
As the north pole of the earth's magnet is the earth's geographical south pole this is why a compass always show the correct direction

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