National Science Olympiad Forum By SOF Olympiad Trainer - Page 488

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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 5
Both A and C are correct

Ans 2:

Class : Class 5
It says which option is incorrect not which one is correct

Ans 3:

Class : Class 5

Ans 4:

Class : Class 8
This question is correct

Ans 5:

Class : Class 7
THERE CHECKING IS WRONG AS ANSWER IS C

Ans 6:

Class : Class 5

Ans 7:

Class : Class 3
This is absolutely correct as y is cerebrum and x is. EllThis Is absolutely correct as y is cerebrum X is cellebellum and Z is the Medulla ✅✅✅✅

Ans 8:

Class : Class 6
Correct answer should be d because cerebellum is below cerebrum, located towards the back of the brain.

Ans 9:

Class : Class 6
cerebrum is the largest part of the brain. cerebellum is the second largest part and it controls musculo-skeleton movement

Ans 10:

Class : Class 7
B is the answer to this question but it is showing A as correct option and it is showing B as correct option in the solutions.

Ans 11:

Class : Class 6
this question is wrong

Ans 12:

Class : Class 4

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Subject :NSO    Class : Class 3

Ans 1:

Class : Class 6
A

Ans 2:

Class : Class 3
A

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Subject :NSO    Class : Class 6

Ans 1:

Class : Class 5

Ans 2:

Class : Class 4

Ans 3:

Class : Class 7

Ans 4:

Class : Class 6

Ans 5:

Class : Class 6
correct option is C, not B. Please make correction.

Ans 6:

Class : Class 6
Although the explanation is correct, it does not match the answer

Ans 7:

Class : Class 10
clear objection

Ans 8:

Class : Class 4
What is this? Answer and solution are completely different, they are not matching!

Ans 9:

Class : Class 7
Answer and solution are completely different, they are not matching!The solution is correct, but their ans is wrong

Ans 10:

Class : Class 9
YES , their answer is not matching with their solution !!

Ans 11:

Class : Class 6
The correct is NSN

Ans 12:

Class : Class 9

Ans 13:

Class : Class 7
Given correct answer and explanation do not match...please rectify...

Ans 14:

Class : Class 10

Ans 15:

Class : Class 8
Pls rectify.

Ans 16:

Class : Class 7
they aren't giving the answer and the solution same in some papers

Ans 17:

Class : Class 3
ayush u are right!!!!!!!!!!!!!!!

Ans 18:

Class : Class 7
why arent they changing the answer

Ans 19:

Class : Class 5
The option selected here is wrong.

Ans 20:

Class : Class 7
There is no option only for the answer they had provided us with, gave the correct explanation but the need to correct the answer as well.

Ans 21:

Class : Class 3

Ans 22:

Class : Class 8
The ans is not matching!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Ans 23:

Class : Class 6
NA

Ans 24:

Class : Class 6
The answer does not match with the solution. There should be a change in the answer.

Ans 25:

Class : Class 7
please explain. your solution doesn't match the correct answer provided by you.

Ans 26:

Class : Class 9
yes !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

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Subject :NSO    Class : Class 6

Ans 1:

Class : Class 7
The answer seems to be wrong. 5 seconds to complete 25 oscillations. That means for one oscillation it is 5/25 = 0.2 seconds. 'Period' usually means one complete oscillation that is 0.2 seconds and that is not given.

Ans 2:

Class : Class 10
the answer is wrong , it should be 0.2s. please kindly provide the solution to this question.

Ans 3:

Class : Class 10
According to definition - answer would be 0.2 s

Ans 4:

Class : Class 7
The answer is wrong. It is 0.2

Ans 5:

Class : Class 7
wrong answer. should be 0.2s

Ans 6:

Class : Class 4
Answer is wrong

Ans 7:

Class : Class 7
I THINK IT COMPLETES 25 OSCILLATIONS IN 5s

Ans 8:

Class : Class 6
The answer should be 0.2 s

Ans 9:

Class : Class 7
The swing completes 25 oscillations in 5 seconds So, It will complete 1 oscillation in 5/25 seconds = 0.2 secondsSo, the time period of the swing is 0.2 seconds. Hence, the right answer is Option C.

Ans 10:

Class : Class 6
The answer has to be 0.2 seconds(5/25). Pls correct

Ans 11:

Class : Class 7
The time taken to complete one oscillation - a left swing and a right swing - is called the time period (T); it is measured in seconds.A swing takes 5 seconds to complete 25 oscillations. That means it would take 1 second to complete 25 ÷ 5 = 5 oscillations. That also means it would take 1 ÷ 5 = 0.2 seconds to complete 1 oscillation.So, the time period of the swing is 0.2 seconds. Hence, the right answer is Option C.

Ans 12:

Class : Class 8
please explain the answer

Ans 13:

Class : Class 8
I think this answer is wrong. It should be 0.2 seconds, according to the definition of a Time Period in oscillatory motion.

Ans 14:

Class : Class 10
answer is wrong it should be 0.2 s

Ans 15:

Class : Class 9
the answer is wrong

Ans 16:

Class : Class 7

Ans 17:

Class : Class 8
According to definition - answer would be 0.2 s

Ans 18:

Class : Class 6

Ans 19:

Class : Class 8

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Subject :NSO    Class : Class 5

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Subject :NSO    Class : Class 7

Ans 1:

Class : Class 7

Ans 2:

Class : Class 8
option a

Ans 3:

Class : Class 9
i checked in google. ans is a

Ans 4:

Class : Class 7

Ans 5:

Class : Class 8
option b is the correct answer

Ans 6:

Class : Class 7
Option B

Ans 7:

Class : Class 9

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Subject :NSO    Class : Class 4

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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 9
c

Ans 2:

Class : Class 5
IT SHOULD NOT BE C! B IS THE RIGHT ANSWER. IF SUN EARTH MOON= FULL MOON. IF SUN MOON EARTH = NEW MOON. .

Ans 3:

Class : Class 5
Full moon occurs when light is spread all over the surface of the moon...but in the picture the moon is blocked by earth and the moon will remain dark.Hence,the answer is (c) new moon

Ans 4:

Class : Class 5

Ans 5:

Class : Class 9
How come it is C ? This is insane!!!

Ans 6:

Class : Class 4
b is answer

Ans 7:

Class : Class 6
b) IT SHD BE FULLLLLLLLLLLLLL MOOOOOOOOOOOOOON!?!??!

Ans 8:

Class : Class 5
It is a full moon and I had enough of your mistakes SOF now, I am going to beat you people.

Ans 9:

Class : Class 6
how is this possible

Ans 10:

Class : Class 3
C

Ans 11:

Class : Class 5
THE MOON IS NOT STRAIGHT TO THE EARTH. MOON HAS SLIGHT SLANTING REVOLUTION. THAT IS WHY WE HAVE DIFFERENT PHASES OF THE MOON. IF THE MOON IS AT THE POSITION OF..... SUN---EARTH---MOON.......SO THAT WILL BE FULL MOON. FULL MOON IS GIVENN AT OPTION B. SO MOST OF US LIKE ME DID B BUT IT IS SHOWING C AS THE CORRECT ANSWER. BUT AS I THINK THAT EVERYTHING HAS A REASON.1. THE SOLUTION IS THE MEANINGFUL WAY IT IS GOOD. BUT IF YOU OPPOSE THIS, SO 2. THAT THE CHART IS SHOWING THAT....... SUN-----EARTH-----MOON. SO ACCORDING TO THE CHART, IT IS A LUNAR ECLIPSE IN WHICH THE MOON IS COMPLETLY BLACK. SO OPTION C HAS A REASON. SHARE YOUR IDEAS ALSO.

Ans 12:

Class : Class 7
It is showing C as the answer to this question

Ans 13:

Class : Class 5
The answer is b not c

Ans 14:

Class : Class 4

Ans 15:

Class : Class 6
moon does not have its own light it reflects of sun and as it is completely blocked by earth the suns light does not reflect and we do not see any phase of the moon .hence ans is c

Ans 16:

Class : Class 8

Ans 17:

Class : Class 5
According to any phases of the moon diagram, a full moon will be behind the Earth. Even lunar eclipse will be on a full moon day . New moons position will be the opposite of a full moon,i.e. between the earth and sun

Ans 18:

Class : Class 6
but how?

Ans 19:

Class : Class 8
It will cause full moon ???

Ans 20:

Class : Class 6
if the answer is c, then they would have mentioned that it is a lunar eclipse. so it should be b

Ans 21:

Class : Class 5
This is wrong i thinkThe answer should be C

Ans 22:

Class : Class 5
This is absolutely incorrect. SOF should verify such answers. The question is about the phase of the moon. Even if it is a lunar eclipse it falls on a full moon day. The answer is B

Ans 23:

Class : Class 6
Yes!I checked it on Google!IT IS FULL MOON!!!!!!????

Ans 24:

Class : Class 1
I think that c is correct as the moon is behind the earth , so there will be no light reaching the moon . Thus, it will be new moon .

Ans 25:

Class : Class 5
it is b

Ans 26:

Class : Class 7

Ans 27:

Class : Class 5

Ans 28:

Class : Class 4
only c

Ans 29:

Class : Class 8

Ans 30:

Class : Class 6
Moon will get no sunlight.THIS ISN’T POSSIBLE!!!!!

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Subject :NSO    Class : Class 8

Ans 1:

Class : Class 8
The three dots are not at the same depth. P and Q are at the same depth, but R is slightly above both of them.

Ans 2:

Class : Class 8
I agree, I feel they are different

Ans 3:

Class : Class 9
R is at a slightly higher depth

Ans 4:

Class : Class 8

Ans 5:

Class : Class 9
doubtthey aren't at the same depthlook carefully sof

Ans 6:

Class : Class 10
yes they aren't at same depth

Ans 7:

Class : Class 8
r is slightly above them so it has less pressure and there is a block above p so the answer is (C)

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Subject :NSO    Class : Class 3

Ans 1:

Class : Class 8
THE ANSWER IS B

Ans 2:

Class : Class 5

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