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Subject :NSO    Class : Class 6

Ans 1:

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

Ans 2:

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]

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Subject :NSO    Class : Class 9

Ans 1:

Class : Class 9
as hard water contains dissolved magnesium and calcium ions

Ans 2:

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..

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Subject :NSO    Class : Class 6

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Subject :NSO    Class : Class 6

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Subject :NSO    Class : Class 7

Ans 1:

Class : Class 7
HNO3 - NITRIC ACID H2S04- SULPHURIC ACID

Ans 2:

Class : Class 9
HNO3=nitric acid H2SO4=sulphuric acid

Ans 3:

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 4:

Class : Class 9
HNO3 = NITRIC ACID H2SO4 = SULFURIC ACID

Ans 5:

Class : Class 7
hno3=nitricacid or aquafortis,h2so4=sulphuric acid or oil of vitriol or king of chemical compounds

Ans 6:

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:

Class : Class 8
HNO3 is Nitric Acid H2SO4 is Sulphuric Acid

Ans 8:

Class : Class 9
HNO3 = Nitric Acid H2SO4 = Sulphuric acid

Ans 9:

Class : Class 8
HNO3 - NITRIC ACID , H2SO4 - SULPHURIC ACID

Ans 10:

Class : Class 7
HNO3 - NITRIC ACID H2S04- SULPHURIC ACID

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Subject :NSO    Class : Class 3

Ans 1:

Class : Class 5
A

Ans 2:

Class : Class 5
Telephone

Ans 3:

Class : Class 5
E-mail

Ans 4:

Class : Class 5
telephone

Ans 5:

Class : Class 5
E-mail

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Subject :NSO    Class : Class 6

Ans 1:

Class : Class 8
disulfuric acid

Ans 2:

Class : Class 8
oleum=h2s2o7 or disulphuric acid or fuming sulphuric acid

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Subject :NSO    Class : Class 6

Ans 1:

Class : Class 7
The Juno mission to planet Jupiter .

Ans 2:

Class : Class 8
JUNO mission to jupiter

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Subject :NSO    Class : Class 5

Ans 1:

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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Subject :NSO    Class : Class 3

Ans 1:

Class : Class 5
Sun

Ans 2:

Class : Class 5
The Pole star

Ans 3:

Class : Class 4
U Y Scoti

Ans 4:

Class : Class 3
Sun

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