National Science Olympiad Forum By SOF Olympiad Trainer - Page 522

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Subject :NSO    Class : Class 6

Ans 1:

Class : Class 7
The answer could be B and D as both are correct

Ans 2:

Class : Class 6
Also, d is right. Attraction is a sure test for magnetism. both b and d are right. Compromised?

Ans 3:

Class : Class 10
The correct answer is option B . A compass may be used to find East and west direction . Once you find North and South , by facing north , the right side will be East and left one will be West

Ans 4:

Class : Class 6
both b and d are correct.

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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 5

Ans 2:

Class : Class 9
no volcano had erupted on Venus in the past 2.5 million years so 2 is the only correct option

Ans 3:

Class : Class 7
2 and 4 is the answer to this question

Ans 4:

Class : Class 5
Please correct it

Ans 5:

Class : Class 8
as per Wikipedia no volcano had erupted on Venus in the past 2.5 million years so 2 is the only correct option

Ans 6:

Class : Class 5
How is 1 correct? Please reply

Ans 7:

Class : Class 7

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Subject :NSO    Class : Class 5

Ans 1:

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 2:

Class : Class 6
this question is wrong

Ans 3:

Class : Class 4

Ans 4:

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

Ans 5:

Class : Class 6

Ans 6:

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

Ans 7:

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 8:

Class : Class 5
Both A and C are correct

Ans 9:

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

Ans 10:

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

Ans 11:

Class : Class 8
This question is correct

Ans 12:

Class : Class 5

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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 6
NA

Ans 2:

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

Ans 3:

Class : Class 4

Ans 4:

Class : Class 5

Ans 5:

Class : Class 9
please explain. your solution doesn't match the correct answer provided by you.

Ans 6:

Class : Class 8
Pls rectify.

Ans 7:

Class : Class 7

Ans 8:

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

Ans 9:

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

Ans 10:

Class : Class 10

Ans 11:

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

Ans 12:

Class : Class 3

Ans 13:

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

Ans 14:

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

Ans 15:

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

Ans 16:

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

Ans 17:

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 18:

Class : Class 9

Ans 19:

Class : Class 6

Ans 20:

Class : Class 7
why arent they changing the answer

Ans 21:

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

Ans 22:

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

Ans 23:

Class : Class 10
clear objection

Ans 24:

Class : Class 6
The option selected here is wrong.

Ans 25:

Class : Class 9
The correct is NSN

Ans 26:

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

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Subject :NSO    Class : Class 6

Ans 1:

Class : Class 9
the answer is wrong

Ans 2:

Class : Class 8

Ans 3:

Class : Class 7
wrong answer. should be 0.2s

Ans 4:

Class : Class 6

Ans 5:

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 6:

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

Ans 7:

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 8:

Class : Class 6
The answer should be 0.2 s

Ans 9:

Class : Class 7

Ans 10:

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

Ans 11:

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

Ans 12:

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

Ans 13:

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 14:

Class : Class 4
Answer is wrong

Ans 15:

Class : Class 8
please explain the answer

Ans 16:

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

Ans 17:

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 18:

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

Ans 19:

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

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Subject :NSO    Class : Class 5

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Subject :NSO    Class : Class 7

Ans 1:

Class : Class 9

Ans 2:

Class : Class 7

Ans 3:

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

Ans 4:

Class : Class 8
option a

Ans 5:

Class : Class 7

Ans 6:

Class : Class 7
Option B

Ans 7:

Class : Class 8
option b is the correct answer

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Subject :NSO    Class : Class 4

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Subject :NSO    Class : Class 5

Ans 1:

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

Ans 2:

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 3:

Class : Class 5
it is b

Ans 4:

Class : Class 6
how is this possible

Ans 5:

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 6:

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

Ans 7:

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

Ans 8:

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 9:

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 10:

Class : Class 6
but how?

Ans 11:

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 12:

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 13:

Class : Class 5

Ans 14:

Class : Class 8

Ans 15:

Class : Class 3
C

Ans 16:

Class : Class 8

Ans 17:

Class : Class 7

Ans 18:

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 19:

Class : Class 9
c

Ans 20:

Class : Class 4

Ans 21:

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

Ans 22:

Class : Class 5
The answer is b not c

Ans 23:

Class : Class 4
b is answer

Ans 24:

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 25:

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 26:

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

Ans 27:

Class : Class 5

Ans 28:

Class : Class 4
only c

Ans 29:

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

Ans 30:

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

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