National Science Olympiad Forum By SOF Olympiad Trainer - Page 327

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Subject :NSO    Class : Class 6

Ans 1:

Class : Class 6
Answer is D.

Ans 2:

Class : Class 10
answer is D, air density decreases on increse in height

Ans 3:

Class : Class 10
ans is not option D as air is not an element , air is a mixture of many elements and compounds......further more statement 2 is correct as air density decreases with increasing altitude i.e air density decreases with increase in height

Ans 4:

Class : Class 6
No ans is not D it's B because air is a mixture not an element.

Ans 5:

Class : Class 4

Ans 6:

Class : Class 6

Ans 7:

Class : Class 6

Ans 8:

Class : Class 7

Ans 9:

Class : Class 6

Ans 10:

Class : Class 6

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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 6

Ans 2: (Master Answer)

Class : Class 1

C

The layer of the Earth, which is made up of solid and molten rocks and contains magnesium and iron is mantle, and is represented by R. Earth's mantle is made up of rock and molten lava containing silicon, iron, magnesium, aluminium, oxygen and other minerals.


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Subject :NSO    Class : Class 6

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Subject :NSO    Class : Class 8

Ans 1:

Class : Class 8

Ans 2:

Class : Class 9
yes

Ans 3:

Class : Class 8
SHORT STRECHED AND THIN STRINGS OF GUITAR PRODUCE NOTE OF HIGH PITCH AND VICE VERSA

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Subject :NSO    Class : Class 4

Ans 1:

Class : Class 3
hhjj

Ans 2:

Class : Class 5

Ans 3:

Class : Class 4
d is the correct answer because if we throw untreated industrial waste it harms the water we drink

Ans 4:

Class : Class 4
the correct answer is D because if we throw untreated industrial waste the water bodies the water might get polluted and cannot be safe for drinking and for our uses as it can cause some harmful diseases like cholera and jaundice and also harms the plants and animals in the water

Ans 5:

Class : Class 3

Ans 6:

Class : Class 4
4 ans is D cause if we throw untreated industrial wastes in water bodies they will get polluted and we won t be able to drink it

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Subject :NSO    Class : Class 4

Ans 1:

Class : Class 4
the correct answer is : B

Ans 2:

Class : Class 7
B

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Subject :NSO    Class : Class 3

Ans 1:

Class : Class 8
How it is C?Malaria is a water-borne disease spread by mosquitoes.They come near polluted water and may leave infectious germs.

Ans 2:

Class : Class 8

Ans 3:

Class : Class 8

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Subject :NSO    Class : Class 5

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Subject :NSO    Class : Class 6

Ans 1:

Class : Class 6
answer is C reason ; magnet :p x point is north pole because it repeled to north pole and other one attract to it then it is south pole .In magnet Q :point x attracted to north pole of real magnet and y reppled then both are said to be magnet.

Ans 2:

Class : Class 10
vasu, no need to apply properties. The options which have both pulled and repelled , are magnet

Ans 3:

Class : Class 9
yes arunav you are right

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Subject :NSO    Class : Class 8

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