National Science Olympiad Forum By SOF Olympiad Trainer - Page 433

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Subject :NSO    Class : Class 7

Ans 1:

Class : Class 8
statement 1:the roots of the trees of the forest hold the soil and prevent soil erosion. (true) statement 2:in forest the leaves of the trees overlap each other and form a canopy and when the rain falls on the leaves the leaves absorb the rain water and some water flows from the branches and remaining water fall on the small shrubs and it absorbs the water and the left over water is then absorbed by the soil so no floods will occur in the forests. (true) option B:statement 1 and statement 2 are true but statement 2 is not the correct explanation of statement 1

Ans 2:

Class : Class 8

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Subject :NSO    Class : Class 6

Ans 1:

Class : Class 7
Yeah,the answer is D

Ans 2:

Class : Class 6
IV is burning of wood which is an irreversible change. How can it be D??

Ans 3:

Class : Class 6
Option A states that I and IV are reversible changes????!!?!?!?!?

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Subject :NSO    Class : Class 4

Ans 1:

Class : Class 4
Hydroelectricity can be used in things like fans. Here , Electrical energy(Hydroelectricity)----->changes into----->Mechanical energy(fan)

Ans 2:

Class : Class 4
can anyone explain how chemical energy related to grass

Ans 3:

Class : Class 5
It should other way around as in hydroelectricity generation mechanical gets converted to electrical

Ans 4:

Class : Class 6

Ans 5:

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 6
there are only 4 items in each option, but there are five blanks

Ans 2:

Class : Class 4

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Subject :NSO    Class : Class 7

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Subject :NSO    Class : Class 7

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Subject :NSO    Class : Class 6

Ans 1:

Class : Class 2
whats displacement

Ans 2:

Class : Class 6

Ans 3:

Class : Class 6

Ans 4:

Class : Class 10
this was ez...

Ans 5:

Class : Class 7

Ans 6:

Class : Class 9
Vedant , Displacement is the shortest distance from the initial point and the final point of a moving body

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Subject :NSO    Class : Class 9

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Subject :NSO    Class : Class 3

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