National Science Olympiad Forum By SOF Olympiad Trainer - Page 519

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Subject :NSO    Class : Class 6

Ans 1:

Class : Class 7

Ans 2:

Class : Class 7

Ans 3:

Class : Class 7

Ans 4:

Class : Class 7

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Subject :NSO    Class : Class 3

Ans 1:

Class : Class 3

Ans 2:

Class : Class 5

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Subject :NSO    Class : Class 4

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Subject :NSO    Class : Class 8

Ans 1:

Class : Class 8

Ans 2:

Class : Class 9
EXPLAIN THIS PLEASEQuestion is incorrect but even after 30 (31) posts and queries no corrections...

Ans 3:

Class : Class 4

Ans 4:

Class : Class 9
The correct answer will be(a)

Ans 5:

Class : Class 9
What 'NA' ? The question itself is incorrect

Ans 6:

Class : Class 8
Exactly.What does NA mean ??

Ans 7:

Class : Class 8
Arrows are marked wrongly...I dont think these mistakes will ever get rectified considering that people have been writing in this forum, for the past two years, for this question. please look into this sof🙂

Ans 8:

Class : Class 9
None of the given options are correct...

Ans 9:

Class : Class 6

Ans 10:

Class : Class 9
What the heck is going on.

Ans 11:

Class : Class 8
Please give the answer to this Question.

Ans 12:

Class : Class 9
I understood that when I looked at the question itselfThe arrows are wrongly labelled

Ans 13:

Class : Class 7
what does NA mean?

Ans 14:

Class : Class 8
PLEASE GIVE THE ANSWER ALONG WITH EXPLANTION

Ans 15:

Class : Class 8
Yes , NA means 'no answer' So , since there is no such option , anything we pick would be incorrect.

Ans 16:

Class : Class 9

Ans 17:

Class : Class 9
why no reply...

Ans 18:

Class : Class 9
NA meant no answer is correct and we had to leave this one empty

Ans 19:

Class : Class 8
NA? what is the explanation of the answer

Ans 20:

Class : Class 7
if there is no answer,then why was it considered wrong?it is not fair.

Ans 21:

Class : Class 8

Ans 22:

Class : Class 8
What do you mean by 'NA'?

Ans 23:

Class : Class 9
Please explain what NA is... I don't understand

Ans 24:

Class : Class 10

Ans 25:

Class : Class 10
NA means 'No Answer'.But the guidelines clearly state 'Mark all questions.'How is this fair?

Ans 26:

Class : Class 10

Ans 27:

Class : Class 9
"NA"?.please explain the answer

Ans 28:

Class : Class 5
NA means no answer but what we had to do with it

Ans 29:

Class : Class 8
Woah how are the marks out of 60 then. People have already attempted this paper in the given year. This means an error in the paper was there that wasn't rectified...

Ans 30:

Class : Class 9
Please explain the answer

Ans 31:

Class : Class 9

Ans 32:

Class : Class 7

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Subject :NSO    Class : Class 3

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Subject :NSO    Class : Class 8

Ans 1:

Class : Class 8
Yes, it should be 33m as distance for an echo = s x t/2

Ans 2:

Class : Class 8
Is the question wrong...? the answer should be 33.0 m as speed=2d/t

Ans 3:

Class : Class 8
Yes I think it is 33 also because it says it is an echo

Ans 4:

Class : Class 8
please explain this question.

Ans 5:

Class : Class 8
please explain this question.

Ans 6:

Class : Class 9
please explain this question

Ans 7:

Class : Class 9

Ans 8:

Class : Class 7
answer??????????????????????????????????????????????????????

Ans 9:

Class : Class 8
Can someone please explain this question?

Ans 10:

Class : Class 8
Time taken to utter single syllable=1/5th of a sSpeed of sound in air=330m s^-1 or 330m/sso distance to reflecting surface=1/5 * 330 as that will give the distance=66.0mSo, distance to reflecting surface is 66.0m

Ans 11:

Class : Class 9

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Subject :NSO    Class : Class 4

Ans 1:

Class : Class 3
The answer which is given in the SOF application is wrong, because a frog has four life stages in his life stages, the correct answer must be moth because it has only three life stages in his life cycle and the parent and child do not look same,

Ans 2:

Class : Class 5

Ans 3:

Class : Class 9

Ans 4:

Class : Class 8
The correct answer is C

Ans 5:

Class : Class 9

Ans 6:

Class : Class 4
correct answer is D

Ans 7:

Class : Class 5
THE ANSWER IS D AS FROG HAS 4 STAGES IN IT'S LIFE CYCLE ,BUT DOES NOT LOOK LIKE IT'S PARENT.WHILE,MOSQUITO HAS THREE SYTAGES IN IT'S LIFE CYCLE AND DOES NOT LOOK LIKE IT'S PARENT.I MADE THE SAME MISTAKE IN THE PREVIOUS TEST

Ans 8:

Class : Class 4

Ans 9:

Class : Class 9
the answer is d

Ans 10:

Class : Class 4
It is option B

Ans 11:

Class : Class 4
Frog has 4 stages any of the answers are not correct

Ans 12:

Class : Class 5

Ans 13:

Class : Class 5
but frog dosnt have just 3 life stages it has 4 so its not the answer

Ans 14:

Class : Class 5
the answer is d as the mosquito does not look like the parent , has 3 stages of life and lays eggs while frog does not look like the adult , has 4 stages of life and lays eggs .

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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 5
Answer is C

Ans 2:

Class : Class 7
super easy answer. it is 'A'

Ans 3:

Class : Class 5
ans is B

Ans 4:

Class : Class 5
ANS A

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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 3
no question!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Ans 2:

Class : Class 9
The question is there in the solution please check

Ans 3:

Class : Class 2

Ans 4:

Class : Class 4
where is the questionnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnn

Ans 5:

Class : Class 7

Ans 6:

Class : Class 5
There is no question!

Ans 7:

Class : Class 9
No relevant question

Ans 8:

Class : Class 6
see the solution the question is how many kharif crops are there. there are 6.

Ans 9:

Class : Class 5
wrong question, incompleted question!!!!!!!!!!!!!????

Ans 10:

Class : Class 6
this is not a question

Ans 11:

Class : Class 5
where is the question???????????????????????????

Ans 12:

Class : Class 5
what.

Ans 13:

Class : Class 5
where the h

Ans 14:

Class : Class 9
question is incomplete

Ans 15:

Class : Class 7
There is no question. What are we supposed to answer. It is incomplete

Ans 16:

Class : Class 5
report error

Ans 17:

Class : Class 5
The question is incomplete

Ans 18:

Class : Class 7
question????????????????

Ans 19:

Class : Class 7
No question?????????????????????????????

Ans 20:

Class : Class 6

Ans 21:

Class : Class 5

Ans 22:

Class : Class 4

Ans 23:

Class : Class 6
there is no proper question?

Ans 24:

Class : Class 7
they did not give the question .

Ans 25:

Class : Class 6
If they don't give the complete question, we all will get it wrongSOF please look into this matter

Ans 26:

Class : Class 5

Ans 27:

Class : Class 5
where is the question ??????????????????

Ans 28:

Class : Class 6
Where is the question? Isn't it very vague?

Ans 29:

Class : Class 6
no question.report error please

Ans 30:

Class : Class 5
WHERE IS THE QUESTION!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!??????????????????????????????????????????????????????????????????????????????????!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!???????????????????????????

Ans 31:

Class : Class 6

Ans 32:

Class : Class 10
question is incomplete

Ans 33:

Class : Class 6
Where is the question!?

Ans 34:

Class : Class 6

Ans 35:

Class : Class 4
There is no question and when I reported that error, it just came as "invalid"

Ans 36:

Class : Class 5
The question is in the solution please check

Ans 37:

Class : Class 9
What is the question?????????????????????????????????

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Subject :NSO    Class : Class 8

Ans 1:

Class : Class 8
Why does the deviation happen to be 180 degrees

Ans 2:

Class : Class 8
Key Idea: Phenomenon of reflection is independent of medium. The deviation produced by combination of two plane mirrors is δ=2π−2θ =2π−2×π2 (θ=90o) ⇒ δ=π=180o. Hence, total deviation in incident ray is180o

Ans 3:

Class : Class 6
Thank You Mr.Rahul

Ans 4:

Class : Class 8
Please explain how the deviation has happened at 180 degrees

Ans 5:

Class : Class 8

Ans 6:

Class : Class 8
explain please....

Ans 7:

Class : Class 9
but due to water refraction will also take place

Ans 8:

Class : Class 10
But wont the refraction of light in water play a role?

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