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krish from USHA MARTIN SCHOOL ,malda, malda
Subject :NSO    Class : Class 5

Ans 1:

Soundharya from ISWK, Muscat
Class : Class 8
It gives softness to the food and too much in take is unhealthy.

Ans 2:

monishajv2006@gmail.com from manan vidya, Ranchi
Class : Class 5
baking powder is a type of powder used to make cakes,cookies and many more. vinegar is a type of liquid used to make cakes,cookies and other junk foods.they are also used to do experiment.

Ans 3:

ratankrmandal@yahoo.com from Vivekananda Mission School, Haldia
Class : Class 7
Baking Powder is a base.It is sodium hydroxide(NaOH). Vinegar is an acid.It is ascetic acid

Ans 4:

from , Serampore
Class : Class 7
CO 2 (Carbon dioxide)

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dev mishra from Bal Bhavan Public School, New Delhi
Subject :NSO    Class : Class 7

Ans 1:

Abhishek from New Vision the olympiad school, KHAMMAM
Class : Class 7
acid is a word which came from latin "acidus/acidum mean sour.bases are the substances which give bitter in taste.

Ans 2:

ANSH from DAYANAND PUBLIC SCHOOL, SHIMLA
Class : Class 8
some materials like lemon and vinegar taste sour due to the presence of materials/ chemicals called acids. some materials like baking soda taste bitter due to the presence of chemicals / materials called bases.

Ans 3:

Sanchay from BIS Dwarka, Dwarka
Class : Class 8
Acids are the chemicals which contain hydrogen ions and taste sour. They attain a pH value below 7 and are corrosive in nature. Bases are generally hydroxides, carbonates, bicarbonates or oxides of metals and bitter to taste. They attain a pH value above 7 and are soapy to touch.

Ans 4:

Manas Malla from Visakha Valley School, Visakhapatnam
Class : Class 8
Acids are substance which are sour Bases are which are slippery/soapy to touch

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Aakash from Dpsrohini, New Delhi
Subject :NSO    Class : Class 6

Ans 1:

Aaryan Maheshwari from MPS Jaipur, Jaipur
Class : Class 6
miniature circuit breaker

Ans 2:

Achintya k j from KENDRIYA VIDYALAYA GOLE MARKET, NEW DELHI
Class : Class 9
Miniature Circuit Breaker

Ans 3:

Raghav toshniwal from jnana prabodhini prashala, Pune
Class : Class 6
MAIN COURSEBOOK,why?

Ans 4:

Lakshya Garg from DMI, Meerut
Class : Class 6
miniature circuit breaker

Ans 5:

Aditya Mishra from Sri Kumaran Children's Academy, Bengaluru
Class : Class 6
MCB stands for Multiple Circuit Breaker

Ans 6:

Akhilesh from BGS Public School, Kengeri, Bengaluru
Class : Class 7
" Miniature Circuit Breaker " is the full form of MCB.

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Namratha from JGRVK, Bengaluru
Subject :NSO    Class : Class 4

Ans 1:

Yatharth from Mayoor School, Noida
Class : Class 6
A COASTAL BREEZE WHICH BLOW FROM SEA TO THE LAND IS DURING THE DAY IS CALLED SEA BREEZE.A COASTAL BREEZE WHICH BLOWS FROM LAND TO SEA DURING THE NIGHT IS SES BREEZE.

Ans 2:

Pramit Bhattacharjee from Billabong High International School, Mumbai
Class : Class 4
land gets heated faster than water does so when the hot air above the land rises up the cool air from the sea moves towards the land keeping that place cool is known as sea breeze. land breeze is mainly there at night.it keeps the sea cool.that wind comes from the land to the sea.

Ans 3:

Pramit Bhattacharjee from Billabong High International School, Mumbai
Class : Class 4
land gets heated faster than water does so when the hot air above the land rises up the cool air from the sea moves towards the land keeping that place cool is known as sea breeze. land breeze is mainly there at night.it keeps the sea cool.that wind comes from the land to the sea.

Ans 4:

Yatharth from Mayoor School, Noida
Class : Class 6
A COASTAL BREEZE WHICH BLOW FROM SEA TO THE LAND IS DURING THE DAY IS CALLED SEA BREEZE.A COASTAL BREEZE WHICH BLOWS FROM LAND TO SEA DURING THE NIGHT IS SES BREEZE.

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Namratha from JGRVK, Bengaluru
Subject :NSO    Class : Class 4

Ans 1:

Sarthak Kumar from Delhi Public School, INDORE
Class : Class 7
During the day, land gets heated up much faster than the water in the sea .As the land becomes hot , it heats the air above it. this hot air rises up and the cool air from the sea blows towards the land to take its place . this wind that blows from the sea towards the land during the day is called the sea breeze . At night , the land cools down much faster than the sea which , in turn., cools the air above the land . The air above is still warmer . This warm air rises up and the cool air from the land rushes towards the sea to take its place .This wind that blows from the land towards the sea at night is called the land breeze .

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Azaan Abdullah from Green Apple Public School, Baddi
Subject :NSO    Class : Class 2

Ans 1:

Animesh Mishra from DPS NORTH BANGALORE, BENGALURU
Class : Class 3
nile is the lonest river.

Ans 2:

Pankaj Rajput from RBK GLOBAL SCHOOL, THANE
Class : Class 4
neal river

Ans 3:

Namratha from JGRVK, Bengaluru
Class : Class 5
nile is the longest river in the world

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Pranav from Sri Aurobindo Memorial school, Bengaluru
Subject :NSO    Class : Class 7

Ans 1:

dev mishra from Bal Bhavan Public School, New Delhi
Class : Class 9
NH4OH is the chemical name of ammonium hydroxide.It is nitric acid.

Ans 2:

Sanchay from BIS Dwarka, Dwarka
Class : Class 8
The uses of ammonium hydroxide are as follows - To manufacture fertilizers like ammonium sulphate To manufacture rayon, dyes, etc.

Ans 3:

Sanchay from BIS Dwarka, Dwarka
Class : Class 8
As an "ink remover" to remove ink off clothes.

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akshaj shukla from summer fields school, Gurgaon
Subject :NSO    Class : Class 7

Ans 1:

Sanchay from BIS Dwarka, Dwarka
Class : Class 8
Neutralisation is the process of adding base to an acid whereas galvanisation is the process of coating a layer of zinc on iron.

Ans 2:

Pranav from Sri Aurobindo Memorial school, Bengaluru
Class : Class 9
neutralisation is when an acid reacts with a base to form a salt and H2O and some heat is liberated galvanisation is when you add a layer of zinc upon iron so that it does not rust

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Ritesh N Das from Adamas International School, Kolkata
Subject :NSO    Class : Class 6

Ans 1:

Krish Sharma from Delhi Public School, New Delhi
Class : Class 6
the answer is - calcium carbonate

Ans 2:

abhinav from fitjee world school, Hyderabad
Class : Class 8
caco3

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Vedant Mehta from Bhagwati International Public School, Patan, Gujarat
Subject :NSO    Class : Class 7

Ans 1:

Pranav from Sri Aurobindo Memorial school, Bengaluru
Class : Class 9
no full form available

Ans 2:

ANSH from DAYANAND PUBLIC SCHOOL, SHIMLA
Class : Class 8
pavour hydrogine

Ans 3:

Pulkit mittal from GAIL DAV PUBLIC SCHOOL, AURAIYA
Class : Class 9
potense of hydrogen or power of hydrogen is basically a test used to determine strengh of a acid or a base.

Ans 4:

Gyanajyoti Mishra from J.N.V., Jajpur
Class : Class 10
pH means power of hydrogen/ povouir hydrogen, means concentration of hydrogen ions in an aqueous solution.So it is used to identify whether a substance is acid,base or neutral.

Ans 5:

Manas Malla from Visakha Valley School, Visakhapatnam
Class : Class 8
pH means power of hydrogen

Ans 6:

riddhikaa from sri kumaran public school, Bengaluru
Class : Class 7
The full form is povouir hydrogene

Ans 7:

akshaj shukla from summer fields school, Gurgaon
Class : Class 7
pH is a scale used to specify the acidity or basicity of an aqueous solution

Ans 8:

Julian Thomas Abraham from Madhava Kripa school , Manipal
Class : Class 8
It is the negative logarithm of H+ ions

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