National Science Olympiad Forum By SOF Olympiad Trainer

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Subject :NSO    Class : Class 6

Ans 1:

Class : Class 6

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Subject :NSO    Class : Class 6

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Subject :NSO    Class : Class 4

Ans 1: (Master Answer)

Class : Class 1
The correct answer is C.

Ans 2:

Class : Class 4

Ans 3:

Class : Class 5
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.

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Subject :NSO    Class : Class 3

Ans 1:

Class : Class 3
A

Ans 2:

Class : Class 3
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 4

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Subject :NSO    Class : Class 3

Ans 1:

Class : Class 3
understood

Ans 2:

Class : Class 5
why?

Ans 3:

Class : Class 5
why

Ans 4:

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 5:

Class : Class 3
ANS should be a

Ans 6:

Class : Class 3
nonsense question

Ans 7:

Class : Class 3
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

Ans 9:

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

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Subject :NSO    Class : Class 4

Ans 1: (Master Answer)

Class : Class 1
The correct answer is C.

Ans 2:

Class : Class 3
C

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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 5
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 2:

Class : Class 6
I did it c but according to SOF, it is a.

Ans 3:

Class : Class 4
D

Ans 4:

Class : Class 6

Ans 5:

Class : Class 5
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 6:

Class : Class 6
c

Ans 7:

Class : Class 5

Ans 8:

Class : Class 4
good question sligjhtly tricky

Ans 9:

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

Ans 10:

Class : Class 7
The correct answer is a but i did it wrong... (i did ans C)

Ans 11:

Class : Class 5

Ans 12:

Class : Class 6
But a is the answer .

Ans 13:

Class : Class 6

Ans 14:

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

Ans 15:

Class : Class 4
iojkbn

Ans 16:

Class : Class 6
Answer a

Ans 17:

Class : Class 5
correct answer is supposed to be C. But according to SOF it is A.

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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 6
It would be conducted on either 9th or 23rd November. Ask your school Olympiad Coordinator.

Ans 2:

Class : Class 6
It would be conducted on either 9th or 23rd November. Ask your school Olympiad Coordinator.

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Subject :NSO    Class : Class 7

Ans 1:

Class : Class 9
base turns yellow with methyl orange.

Ans 2:

Class : Class 9
I think the answer is C. If it contains H+ ions less than OH- ions, the substance is a base.

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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 5
C

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