National Science Olympiad Forum By SOF Olympiad Trainer - Page 700

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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 5
C

Ans 2:

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 3:

Class : Class 7
correct answer is C

Ans 4:

Class : Class 4
ans is c

Ans 5:

Class : Class 4
the correct answer is C

Ans 6:

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 7:

Class : Class 6

Ans 8:

Class : Class 5
cccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccc

Ans 9:

Class : Class 4

Ans 10:

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 11:

Class : Class 4

Ans 12: (Master Answer)

Class : Class 1
The correct answer is C.

Ans 13:

Class : Class 3
The correct answer is c

Ans 14:

Class : Class 4
The answer is C

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Subject :NSO    Class : Class 3

Ans 1:

Class : Class 5
A

Ans 2:

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 3:

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

Ans 4:

Class : Class 3
A

Ans 5:

Class : Class 7

Ans 6:

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

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

Ans 2:

Class : Class 3
understood

Ans 3:

Class : Class 8

Ans 4:

Class : Class 8

Ans 5:

Class : Class 6
why?

Ans 6:

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 7:

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 8:

Class : Class 3
nonsense question

Ans 9:

Class : Class 9
ANS should be a

Ans 10:

Class : Class 8

Ans 11:

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

Ans 12:

Class : Class 9
why

Ans 13:

Class : Class 9

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Subject :NSO    Class : Class 4

Ans 1:

Class : Class 8
please give explanation Admin.

Ans 2:

Class : Class 5
please explain how is it c?

Ans 3:

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 4:

Class : Class 4
D is correct

Ans 5:

Class : Class 6
d

Ans 6:

Class : Class 7
correct answer is C

Ans 7:

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

Ans 8:

Class : Class 5
C

Ans 9:

Class : Class 4
explain please

Ans 10:

Class : Class 9
C

Ans 11: (Master Answer)

Class : Class 1

The correct answer is C.


Ans 12:

Class : Class 6
C

Ans 13:

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

Ans 14:

Class : Class 9
The answer is C

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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 4
D

Ans 2:

Class : Class 6

Ans 3:

Class : Class 6
EASY. It is a). FOund it very quickly. I wonder why many of you put c)

Ans 4:

Class : Class 9
OH mene to d kiya tab laga ki sab wrong the.oh my god now acinfusing yar

Ans 5:

Class : Class 9
c

Ans 6:

Class : Class 8
The correct answer is a but i did it wrong... (i did ans C)

Ans 7:

Class : Class 1
The correct ans is A.

Ans 8:

Class : Class 10
Soumya raj is correct answer should be c as ball and socket joint is only found in legs and arms and it is definitely not found in the skull .

Ans 9:

Class : Class 5
but read the question... you have to select the incorrect ans

Ans 10:

Class : Class 7
But a is the answer .

Ans 11:

Class : Class 4
Answer a

Ans 12:

Class : Class 4
p is not pivot joint but a ball and socket joint but according to me c is the correct ans

Ans 13:

Class : Class 5

Ans 14:

Class : Class 5
actually the picture P is wrong . they want to express it as pivot joint.

Ans 15:

Class : Class 5
The correct answer is A) according to SOF

Ans 16:

Class : Class 9
its a

Ans 17:

Class : Class 5
the answer is a but i did it c

Ans 18:

Class : Class 7
I did it c but according to SOF, it is a.

Ans 19:

Class : Class 6
correct answer is supposed to be C. But according to SOF it is A.

Ans 20:

Class : Class 6
Soumya raj is correct

Ans 21:

Class : Class 4
cool question

Ans 22:

Class : Class 5
Nice question

Ans 23:

Class : Class 4
iojkbn

Ans 24:

Class : Class 9

Ans 25:

Class : Class 8
The question is asking to select the incorrect question, but option C is correct and option A is wrong so A is the correct answer

Ans 26:

Class : Class 4

Ans 27:

Class : Class 7
All of them are incorrect so the answer is D

Ans 28:

Class : Class 7
WTH?

Ans 29:

Class : Class 7
SOF is wrong . The answer should be C as Ball and socket joint is only found in arms and legs . It cannot come in the skull . Smita De is also absolutely right .

Ans 30:

Class : Class 9
It's simple

Ans 31:

Class : Class 5

Ans 32:

Class : Class 8
good question sligjhtly tricky

Ans 33:

Class : Class 5
Correct answer is C

Ans 34:

Class : Class 9
I think the answer is A

Ans 35:

Class : Class 10
Yes, it is true, we can compare the movement to the joint mentioned as "P" with that of a joystick. It is a ball-socket joint, and it is found in the shoulders and the hips.

Ans 36:

Class : Class 8
And the question said to find the incorrect option! So a.

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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 7
It would be conducted on either 9th or 23rd November. Ask your school Olympiad Coordinator.

Ans 2:

Class : Class 7
It would be conducted on either 9th or 23rd November. Ask your school Olympiad Coordinator.

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