National Science Olympiad Forum By SOF Olympiad Trainer - Page 727

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Subject :NSO    Class : Class 4

Ans 1:

Class : Class 4
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 6
i cant count please give solution

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Subject :NSO    Class : Class 6

Ans 1:

Class : Class 9
I meant c

Ans 2:

Class : Class 9
D

Ans 3:

Class : Class 7
It should be both a

Ans 4:

Class : Class 7
its definitely a

Ans 5:

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 6:

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

Ans 7:

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

Ans 8:

Class : Class 6
It is A

Ans 9:

Class : Class 6

Ans 10:

Class : Class 8

Ans 11:

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 12:

Class : Class 8

Ans 13:

Class : Class 7
should be A

Ans 14:

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

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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
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 2:

Class : Class 7
correct answer is C

Ans 3:

Class : Class 4
The answer is C

Ans 4:

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 !

Ans 5:

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 6:

Class : Class 5
C

Ans 7:

Class : Class 4

Ans 8:

Class : Class 4
the correct answer is C

Ans 9:

Class : Class 3
The correct answer is c

Ans 10: (Master Answer)

Class : Class 1
The correct answer is C.

Ans 11:

Class : Class 5
cccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccc

Ans 12:

Class : Class 6

Ans 13:

Class : Class 4

Ans 14:

Class : Class 5
ans is c

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Subject :NSO    Class : Class 3

Ans 1:

Class : Class 3
A

Ans 2:

Class : Class 5
A

Ans 3:

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 4:

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

Ans 5:

Class : Class 7

Ans 6:

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

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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Subject :NSO    Class : Class 3

Ans 1:

Class : Class 8

Ans 2:

Class : Class 6

Ans 3:

Class : Class 9
ANS should be a

Ans 4:

Class : Class 3
understood

Ans 5:

Class : Class 9
The images given in Options A, B and D are symmetrical images. That means all three have at least one line of symmetry. Line of symmetry is any line drawn through the image which divides the image into two exactly equal parts, and these parts are mirror images of each other. A.The part above the red line (line of symmetry) and the 7part below the red line are mirror images of each other.7410`1 B.The parts on both sides of the red line (line of symmetry) are mirror images of each other. C.There can be no line of symmetry that can divide this image into two equal parts which are mirror images of each other. D.The part on the left side of the red line (line of symmetry) and the part on the right side of the red line are mirror images of each other. Hence, Option C is the odd one out.

Ans 6:

Class : Class 3
Answer is asymmetrical figure, because all the other figures are symmetrical.

Ans 7:

Class : Class 4
Figure A can be folded horizontally, figure B can be folded diagonally, figure D can be folded vertically to get their mirror images whereas figure C is asymmetric, so the odd one out is figure C

Ans 8:

Class : Class 9
why

Ans 9:

Class : Class 6
why?

Ans 10:

Class : Class 8

Ans 11:

Class : Class 9

Ans 12:

Class : Class 8

Ans 13:

Class : Class 3
nonsense question

Ans 14:

Class : Class 3
i cant understand the second question c] or b]?

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Subject :NSO    Class : Class 4

Ans 1:

Class : Class 4
D is correct

Ans 2:

Class : Class 6
d

Ans 3:

Class : Class 8
please give explanation Admin.

Ans 4:

Class : Class 4
it also can be d explain how please admin cant understand

Ans 5:

Class : Class 9
C

Ans 6:

Class : Class 9
The answer is C

Ans 7:

Class : Class 3
explain please

Ans 8: (Master Answer)

Class : Class 1

The correct answer is C.


Ans 9:

Class : Class 5
C

Ans 10:

Class : Class 5
how do you all know the correct answer is 'C' when everything seems correct.

Ans 11:

Class : Class 7
correct answer is C

Ans 12:

Class : Class 5
please explain how is it c?

Ans 13:

Class : Class 4
I. This is so EZ.t can be c as N is on the top and S is down plus when the north recives cold it is hot in the south and when the south is cold it is hot in the north

Ans 14:

Class : Class 6
C

Ans 15:

Class : Class 4
no u DUMMIES! winter should be on the east side of the earth and summer on the west and Goutham this question is sooooo WRONG! and ur wrong Goutham

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