National Science Olympiad Forum By SOF Olympiad Trainer - Page 639

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Subject :NSO    Class : Class 3

Ans 1:

Class : Class 7
ans is A as the order of gases will not change

Ans 2:

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

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 7
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.

Ans 5:

Class : Class 3
A

Ans 6:

Class : Class 7

Ans 7:

Class : Class 5
A

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Subject :NSO    Class : Class 3

Ans 1:

Class : Class 6

Ans 2:

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

Ans 3:

Class : Class 7

Ans 4:

Class : Class 8

Ans 5:

Class : Class 3
understood

Ans 6:

Class : Class 8
ANS should be a

Ans 7:

Class : Class 6

Ans 8:

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 9:

Class : Class 6
why?

Ans 10:

Class : Class 9
why

Ans 11:

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

Ans 12:

Class : Class 8
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 13:

Class : Class 3
nonsense question

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Subject :NSO    Class : Class 4

Ans 1:

Class : Class 8
C

Ans 2:

Class : Class 6
C

Ans 3:

Class : Class 4
D is correct

Ans 4:

Class : Class 5
please explain how is it c?

Ans 5:

Class : Class 5
C

Ans 6:

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 7:

Class : Class 6
please give explanation Admin.

Ans 8: (Master Answer)

Class : Class 1

The correct answer is C.


Ans 9:

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

Ans 10:

Class : Class 6
d

Ans 11:

Class : Class 7
correct answer is C

Ans 12:

Class : Class 8
The answer is C

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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 4
D

Ans 2:

Class : Class 8
good question sligjhtly tricky

Ans 3:

Class : Class 7
And the question said to find the incorrect option! So a.

Ans 4:

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

Ans 5:

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

Ans 6:

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

Ans 7:

Class : Class 7
But a is the answer .

Ans 8:

Class : Class 4

Ans 9:

Class : Class 5
its a

Ans 10:

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

Ans 11:

Class : Class 6
Soumya raj is correct

Ans 12:

Class : Class 6

Ans 13:

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 14:

Class : Class 5
Correct answer is C

Ans 15:

Class : Class 4
Answer a

Ans 16:

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

Ans 17:

Class : Class 8
It's simple

Ans 18:

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

Ans 19:

Class : Class 4
cool question

Ans 20:

Class : Class 1
The correct ans is A.

Ans 21:

Class : Class 5

Ans 22:

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

Ans 23:

Class : Class 5
OH mene to d kiya tab laga ki sab wrong the.oh my god now acinfusing yar

Ans 24:

Class : Class 8
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 25:

Class : Class 9
c

Ans 26:

Class : Class 5
Nice question

Ans 27:

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

Ans 28:

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

Ans 29:

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

Ans 30:

Class : Class 8
I think the answer is A

Ans 31:

Class : Class 4
iojkbn

Ans 32:

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 33:

Class : Class 5

Ans 34:

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 35:

Class : Class 8

Ans 36:

Class : Class 7
WTH?

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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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Subject :NSO    Class : Class 7

Ans 1:

Class : Class 9
i agree@anurag

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.

Ans 3:

Class : Class 9
base turns yellow with methyl orange.

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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 5

Ans 2:

Class : Class 7
mo the film will pop so ans is d

Ans 3:

Class : Class 6
Option DThe film of soapy water will burst as the water will get evaporated........

Ans 4:

Class : Class 9
answer is C

Ans 5:

Class : Class 5
C

Ans 6:

Class : Class 8
a b c d e f g h i j k l m n o p q r s t u v w x y z.......... Confusing .......... z y x w v u t s r q p o n m l k j i h g f e d c b a

Ans 7:

Class : Class 8
ANSWER IS D

Ans 8:

Class : Class 6
d

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Subject :NSO    Class : Class 4

Ans 1:

Class : Class 2
C

Ans 2:

Class : Class 8
They were trying to show the mirror image but OptionA is not shown correctly as the mirror image. Hence the confusion. between A and D.

Ans 3:

Class : Class 4
A is not a mirror image

Ans 4:

Class : Class 6

Ans 5:

Class : Class 7

Ans 6:

Class : Class 8
I don’t understand how can d be the answer

Ans 7:

Class : Class 6
A

Ans 8:

Class : Class 4
a

Ans 9:

Class : Class 7
A

Ans 10:

Class : Class 5
A is not a mirror image. Requesting SOF to correct the same.

Ans 11:

Class : Class 5
answer can be b

Ans 12:

Class : Class 4

Ans 13:

Class : Class 7
In A the mirror image of B is wrong and in D it is not a mirror image.In fact A and D both are not mirror images .Hence, the confusion between A and D

Ans 14:

Class : Class 5
A

Ans 15: