National Science Olympiad Forum By SOF Olympiad Trainer - Page 727

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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 6

Ans 3:

Class : Class 3
The correct answer is c

Ans 4:

Class : Class 4
The answer is C

Ans 5:

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 6: (Master Answer)

Class : Class 1
The correct answer is C.

Ans 7:

Class : Class 7
correct answer is C

Ans 8:

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 9:

Class : Class 5
ans is c

Ans 10:

Class : Class 4

Ans 11:

Class : Class 4

Ans 12:

Class : Class 4
the correct answer is C

Ans 13:

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 14:

Class : Class 5
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Subject :NSO    Class : Class 3

Ans 1:

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.

Ans 2:

Class : Class 5
A

Ans 3:

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

Ans 4:

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 5:

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

Ans 6:

Class : Class 3
A

Ans 7:

Class : Class 7

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Subject :NSO    Class : Class 3

Ans 1:

Class : Class 9
ANS should be a

Ans 2:

Class : Class 3
understood

Ans 3:

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 4:

Class : Class 9

Ans 5:

Class : Class 6
why?

Ans 6:

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 7:

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

Ans 8:

Class : Class 3
nonsense question

Ans 9:

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

Ans 10:

Class : Class 8

Ans 11:

Class : Class 6

Ans 12:

Class : Class 9
why

Ans 13:

Class : Class 8

Ans 14:

Class : Class 8

Post Your Answer

Subject :NSO    Class : Class 4

Ans 1:

Class : Class 5
C

Ans 2:

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

Ans 3:

Class : Class 8
please give explanation Admin.

Ans 4:

Class : Class 7
correct answer is C

Ans 5:

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 6:

Class : Class 4
D is correct

Ans 7:

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

Ans 8: (Master Answer)

Class : Class 1

The correct answer is C.


Ans 9:

Class : Class 9
C

Ans 10:

Class : Class 6
C

Ans 11:

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 12:

Class : Class 5
please explain how is it c?

Ans 13:

Class : Class 9
The answer is C

Ans 14:

Class : Class 6
d

Ans 15:

Class : Class 3
explain please

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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 1
The correct ans is A.

Ans 2:

Class : Class 4

Ans 3:

Class : Class 7
WTH?

Ans 4:

Class : Class 5

Ans 5:

Class : Class 4
Answer a

Ans 6:

Class : Class 4
D

Ans 7:

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

Ans 8:

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

Ans 9:

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

Ans 10:

Class : Class 9

Ans 11:

Class : Class 9
It's simple

Ans 12:

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

Ans 13:

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

Ans 14:

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

Ans 15:

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

Ans 16:

Class : Class 4
iojkbn

Ans 17:

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 18:

Class : Class 9
c

Ans 19:

Class : Class 5

Ans 20:

Class : Class 6
Soumya raj is correct

Ans 21:

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 22:

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 23:

Class : Class 5
Nice question

Ans 24:

Class : Class 7
But a is the answer .

Ans 25:

Class : Class 6

Ans 26:

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 27:

Class : Class 8
good question sligjhtly tricky

Ans 28:

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

Ans 29:

Class : Class 4
cool question

Ans 30:

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

Ans 31:

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

Ans 32:

Class : Class 9
I think the answer is A

Ans 33:

Class : Class 5
Correct answer is C

Ans 34:

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

Ans 35:

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

Ans 36:

Class : Class 9
its 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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Subject :NSO    Class : Class 7

Ans 1:

Class : Class 9
base turns yellow with methyl orange.

Ans 2:

Class : Class 10
i agree@anurag

Ans 3:

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

Post Your Answer

Subject :NSO    Class : Class 5

Ans 1:

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

Ans 2:

Class : Class 6
d

Ans 3:

Class : Class 8
ANSWER IS D

Ans 4:

Class : Class 9
answer is C

Ans 5:

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 6:

Class : Class 9
mo the film will pop so ans is d

Ans 7:

Class : Class 5
C

Ans 8:

Class : Class 5

Post Your Answer

Subject :NSO    Class : Class 4

Ans 1:

Class : Class 8
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 2:

Class : Class 2
C

Ans 3:

Class : Class 5
THEY CAN TELL THAT WHICH IS NOT MIRROR IMAGE OR MIRROR IMAGE

Ans 4:

Class : Class 5

Ans 5:

Class : Class 9

Ans 6:

Class : Class 5
I Don't Understand?

Ans 7:

Class : Class 8
Yes A is not a mirror image SOF change answer

Ans 8:

Class : Class 7
A

Ans 9:

Class : Class 5

Ans 10:

Class : Class 4
aa

Ans 11:

Class : Class 4
a

Ans 12:

Class : Class 7

Ans 13:

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

Ans 14:

Class : Class 5
answer can be b

Ans 15:

Class : Class 4
A is not a mirror image

Ans 16:

Class : Class 4

Ans 17:

Class : Class 5
A is almost a symmetrical figure

Ans 18:

Class : Class 8
A IS NOT A MIRROR IMAGE!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Ans 19:

Class : Class 9

Ans 20:

Class : Class 5
A

Ans 21:

Class : Class 6
A

Ans 22:

Class : Class 6

Ans 23:

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

Ans 24:

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 25:

Class : Class 3

Ans 26:

Class : Class 5
A is not a mirror image. @SOF Please change the answer.

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