National Science Olympiad Forum By SOF Olympiad Trainer - Page 698

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Subject :NSO    Class : Class 4

Ans 1:

Class : Class 4
not sure

Ans 2:

Class : Class 9
d is the answer

Ans 3:

Class : Class 7
it's 'd' or 'a'..... not sure

Ans 4: (Master Answer)

Class : Class 1
The correct answer is A.

Ans 5:

Class : Class 4
The Correct Answer Is A

Ans 6:

Class : Class 8
please help help master answer explain

Ans 7:

Class : Class 3

Ans 8:

Class : Class 7
Can you tell the answer to this question

Ans 9:

Class : Class 4
Its D

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Subject :NSO    Class : Class 6

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Subject :NSO    Class : Class 4

Ans 1:

Class : Class 6
i cant count please give solution

Ans 2:

Class : Class 6
HOW MANY SQUARES ARE THERE AND GIVE SOLUTION

Ans 3:

Class : Class 5
This answer should be three.

Ans 4:

Class : Class 4
Please give solution

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Subject :NSO    Class : Class 6

Ans 1:

Class : Class 8

Ans 2:

Class : Class 9
D

Ans 3:

Class : Class 9
I meant c

Ans 4:

Class : Class 9
A means A. Aarya you are right

Ans 5:

Class : Class 7
should be A

Ans 6:

Class : Class 10
It will not be A because in first class lever the fulcrum lies between load and effort but in hammer effort lies between fulcrum and load

Ans 7:

Class : Class 3
It's A, as in a hammer, the fulcrum, that is the place were the head of the hammer and rod of the hammer meet is in center, the load which is the nail is on one end and the effort we apply is on the other end

Ans 8:

Class : Class 8

Ans 9:

Class : Class 7
It should be both a

Ans 10:

Class : Class 8
It is C.. Cuz the fulcrum is at one end..

Ans 11:

Class : Class 7
its definitely a

Ans 12:

Class : Class 7
It shows that the effort is in between and load and fulcrum are at the ends .

Ans 13:

Class : Class 6
It is A

Ans 14:

Class : Class 6

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Subject :NSO    Class : Class 8

Ans 1:

Class : Class 10
Mirage is an optical illusion caused due to refraction of light.

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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 6

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Subject :NSO    Class : Class 4

Ans 1:

Class : Class 4
the correct answer is C

Ans 2: (Master Answer)

Class : Class 1
The correct answer is C.

Ans 3:

Class : Class 5
cccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccc

Ans 4:

Class : Class 5
C

Ans 5:

Class : Class 7
correct answer is C

Ans 6:

Class : Class 4
ans is c

Ans 7:

Class : Class 4

Ans 8:

Class : Class 4
The answer is C

Ans 9:

Class : Class 8
The correct answer is C because if organism X wipes out all tadpoles in the community, then water insects' population grows with nothing to eat them. The small fish die because they have nothing to eat, and soon the big fish die too.

Ans 10:

Class : Class 6

Ans 11:

Class : Class 3
The correct answer is c

Ans 12:

Class : Class 4

Ans 13:

Class : Class 4
In the given food chain, tadpole feeds on water insect and in turn is eaten by small fish. If population of tadpole will decline with time then small fish population will also decrease as former is the food of later. On the other hand, water insect population will be positively affected because in the absence of predator prey population reproduces and flourishes.

Ans 14:

Class : Class 9
Aarush , there will be not enough plants to feed so many water insects . So, at a particular time all plants will finish . So , there will be nothing left for the water insects so they will also die !

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Subject :NSO    Class : Class 3

Ans 1:

Class : Class 5
A

Ans 2:

Class : Class 3
A

Ans 3:

Class : Class 8
ans is A as the order of gases will not change

Ans 4:

Class : Class 3
We Don't know that plants breath oxygen in night

Ans 5:

Class : Class 7

Ans 6:

Class : Class 3
Answer is D because at night plants take in oxygen and give out carbon-di-oxide whereas we humans always take in oxygen and give out carbon-di-oxide.

Ans 7:

Class : Class 8
Sorry ,answer is A .I gave wrong explanation why .You have told arerespectively, so gas 1 is carbon dioxide and gas 2 is oxygen.You have given the order as 1 and 2 i.e. carbon dioxide and oxygen.So ,we will say it as 2 and 1 i.e oxygen and carbon dioxide .Hence answer is A.

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