National Science Olympiad Forum By SOF Olympiad Trainer - Page 335

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Subject :NSO    Class : Class 4

Ans 1:

Class : Class 4

Ans 2:

Class : Class 5
no correct answer for this bogus question. Mentioned that ant eaters lay eggs whereas they do not. they are mammals but they are not monotrems. answer can be c as butterfly lays eggs,platypus is a monotreme mammal so lays eggs, and flying lizard has wings.

Ans 3:

Class : Class 4
There is no correct answer to this question.

Ans 4:

Class : Class 5
C C C

Ans 5:

Class : Class 4
SOF got it right Some anteaters lay eggs; they did not say that it is related to normal anteaters who do not lay eggs

Ans 6:

Class : Class 4
the answer is : C

Ans 7:

Class : Class 4
the answer is not c because lizard dont have wings

Ans 8:

Class : Class 4
the answer is : C

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Subject :NSO    Class : Class 6

Ans 1:

Class : Class 6

Ans 2:

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

Ans 3:

Class : Class 7

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 6

Ans 6:

Class : Class 4

Ans 7:

Class : Class 6
Answer is D.

Ans 8:

Class : Class 6

Ans 9:

Class : Class 7

Ans 10:

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

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Subject :NSO    Class : Class 5

Ans 1: (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.


Ans 2:

Class : Class 6

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Subject :NSO    Class : Class 6

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Subject :NSO    Class : Class 8

Ans 1:

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

Ans 2:

Class : Class 8

Ans 3:

Class : Class 9
yes

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Subject :NSO    Class : Class 4

Ans 1:

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

Ans 2:

Class : Class 3

Ans 3:

Class : Class 3
hhjj

Ans 4:

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

Ans 5:

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 6:

Class : Class 5

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Subject :NSO    Class : Class 4

Ans 1:

Class : Class 7
B

Ans 2:

Class : Class 4
the correct answer is : B

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Subject :NSO    Class : Class 3

Ans 1:

Class : Class 8

Ans 2:

Class : Class 8

Ans 3:

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.

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Subject :NSO    Class : Class 5

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Subject :NSO    Class : Class 6

Ans 1:

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

Ans 2:

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 3:

Class : Class 9
yes arunav you are right

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