National Science Olympiad Forum By SOF Olympiad Trainer

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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

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

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

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

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

Ans 6:

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

Ans 7:

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 8:

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

Ans 9:

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

Ans 10:

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.

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Subject :NSO    Class : Class 3

Ans 1:

Class : Class 5
E-mail

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Class : Class 5
A

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Class : Class 6
E-mail

Ans 4:

Class : Class 5
telephone

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Class : Class 5
Telephone

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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 8
JUNO mission to jupiter

Ans 2:

Class : Class 7
The Juno mission to planet 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

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Class : Class 4
U Y Scoti

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Class : Class 5
The Pole star

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Class : Class 5
Sun

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Class : Class 3
Sun

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Subject :NSO    Class : Class 7

Ans 1:

Class : Class 9
Theory of relativity says us that E means energy and M where mass and C means velocity of light, in the equation E=MC^2

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Class : Class 8
Theory of Relativity is a theory proposed by Albert Einstein relating mass, capacity and energy in the form of equation where E is energy, M is mass and C is capacity (E=MC^2).

Ans 3:

Class : Class 7
The theory of relativity was proposed by Albert Einstein and determined that the laws of physics are the same for all non accelerating observers. He showed that the speed of light within a vacuum is the same no matter the speed at which an observer travels.

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