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PRINCE from DON BOSCO ACADEMY , PATNA
Subject :NSO    Class : Class 6

Ans 1:

Akshatt Uppal from Chirec International School, Hyderabad
Class : Class 8
The answer is 30 litres(a). Tank A: 45+30=75 Tank B:75/5=15 so the water transferred from Tank A to tank B so that each tank contains 45lit of water should be 30 litres [Tank A: 75-30=45; Tank B: 15+30=45]

Ans 2:

Aakash from Dpsrohini, New Delhi
Class : Class 6
Quantity of water in tank A= 5x Quantity of water in tank B= x Total quantity of water= 6x 6x=(45+45) litres 6x= 90 litres x=15 litres A=5X=75 LITRES, B=15 LITRES Quantity of water transfered from A to B=30

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jayashimman from sboa, Chennai
Subject :NSO    Class : Class 9

Ans 1:

Pulkit from Aryaman Vikram Birla- Institute of Learning, Haldwani
Class : Class 9
permanent hardness of water means it cannot be converted again into its soft state without strong boiling as it contains Ca and Mg salts..

Ans 2:

Sarthak Praveen Modhe from St. Thomas Convent Sr. Sec. School, Bhopal
Class : Class 9
as hard water contains dissolved magnesium and calcium ions

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abhinav from fitjee world school, Hyderabad
Subject :NSO    Class : Class 6

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

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hanish gowda from vidyaniketan public school, Bengaluru
Subject :NSO    Class : Class 7

Ans 1:

nasr2607@gmail.com from Aurum the Global School, Haldwani
Class : Class 8
HNO3 - NITRIC ACID , H2SO4 - SULPHURIC ACID

Ans 2:

Pranav from Sri Aurobindo Memorial school, Bengaluru
Class : Class 9
HNO3=nitric acid H2SO4=sulphuric acid

Ans 3:

Kriti Kannan from Kendriya Vidyalaya Janakpuri, New Delhi
Class : Class 9
HNO3 = NITRIC ACID H2SO4 = SULFURIC ACID

Ans 4:

Ardhya Goyal from DPS Durg, Chattisgarh
Class : Class 7
HNO3 - NITRIC ACID H2S04- SULPHURIC ACID

Ans 5:

Manas Malla from Visakha Valley School, Visakhapatnam
Class : Class 8
HNO3 is Nitric Acid H2SO4 is Sulphuric Acid

Ans 6:

Tejas Shende from Kendriya Vidyalaya, IIT Campus, Powai, Mumbai, Mumbai
Class : Class 8
HNO3 and H2SO4 are strong and artificially made acids called as Nitric acid and Sulphuric acid respectively. They are used in perfume making, cleansing of metal containers, etc. and they are also used in chemical reactions.

Ans 7:

Nageswara Rao Rayala from new vison olmpiyad school, khammam,telangana
Class : Class 7
hno3=nitricacid or aquafortis,h2so4=sulphuric acid or oil of vitriol or king of chemical compounds

Ans 8:

Swetanshu Sekhar Pati from Amity International School, Noida
Class : Class 9
HNO3 = Nitric Acid H2SO4 = Sulphuric acid

Ans 9:

Pulkit mittal from GAIL DAV PUBLIC SCHOOL, AURAIYA
Class : Class 9
hno3 i snitric acid a very strong acid indeed a monobasic acid h2so4 is sulphuric acid ph is 1.4 highly corrosive used in lead storage batteries hope u get

Ans 10:

Ardhya Goyal from DPS Durg, Chattisgarh
Class : Class 7
HNO3 - NITRIC ACID H2S04- SULPHURIC ACID

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Krithik from St Gregorios HIgh School, Mumbai
Subject :NSO    Class : Class 3

Ans 1:

Adithya Bharath M from Manipal School, Mangalore
Class : Class 7
E-mail

Ans 2:

Shagun from MAXFORT DWARKA, New Delhi
Class : Class 5
Telephone

Ans 3:

suchir from dehli public school miyapur, Hyderabad
Class : Class 6
E-mail

Ans 4:

Shagun from MAXFORT DWARKA, New Delhi
Class : Class 5
telephone

Ans 5:

Kirti Dwivedi from DR AMIN, Vadodara
Class : Class 5
A

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abhinav from fitjee world school, Hyderabad
Subject :NSO    Class : Class 6

Ans 1:

abhinav from fitjee world school, Hyderabad
Class : Class 8
oleum=h2s2o7 or disulphuric acid or fuming sulphuric acid

Ans 2:

Ritesh N Das from Adamas International School, Kolkata
Class : Class 9
disulfuric acid

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Pulkit from SFS ICSE, Bangalore
Subject :NSO    Class : Class 6

Ans 1:

A Andrew from Lalaji Memorial Omega International School, Chennai
Class : Class 5
The Juno mission to planet Jupiter .

Ans 2:

abhinav from fitjee world school, Hyderabad
Class : Class 8
JUNO mission to jupiter

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UVAIS ZUFAR from DON BOSCO SCHOOL OF EXCELLENCE, Chennai
Subject :NSO    Class : Class 5

Ans 1:

Soundharya from ISWK, Muscat
Class : Class 8
Trible people live in forests. Deforestation is the process of cutting down of trees in forests. This affects the survival of trible people as they get food from these trees and live in forests.

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Nishat Anjum from Sarala Birla Public School, Ranchi
Subject :NSO    Class : Class 3

Ans 1:

Kirti Dwivedi from DR AMIN, Vadodara
Class : Class 5
Sun

Ans 2:

Nishat Anjum from Sarala Birla Public School, Ranchi
Class : Class 4
U Y Scoti

Ans 3:

Adithya Bharath M from Manipal School, Mangalore
Class : Class 7
The Pole star

Ans 4:

Shubhra from Sandipani, Nagpur
Class : Class 3
Sun

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