National Science Olympiad Forum By SOF Olympiad Trainer - Page 485

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Subject :NSO    Class : Class 4

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Subject :NSO    Class : Class 8

Ans 1:

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

Ans 2:

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

Ans 3:

Class : Class 8

Ans 4:

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

Ans 5:

Class : Class 9
What the heck is going on.

Ans 6:

Class : Class 8
PLEASE GIVE THE ANSWER ALONG WITH EXPLANTION

Ans 7:

Class : Class 7
what does NA mean?

Ans 8:

Class : Class 9

Ans 9:

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

Ans 10:

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

Ans 11:

Class : Class 7

Ans 12:

Class : Class 9

Ans 13:

Class : Class 9
Please explain the answer

Ans 14:

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

Ans 15:

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

Ans 16:

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

Ans 17:

Class : Class 9
why no reply...

Ans 18:

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

Ans 19:

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

Ans 20:

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 21:

Class : Class 10

Ans 22:

Class : Class 6

Ans 23:

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

Ans 24:

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

Ans 25:

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 26:

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

Ans 27:

Class : Class 8

Ans 28:

Class : Class 4

Ans 29:

Class : Class 4
NA means no answer but what we had to do with it

Ans 30:

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

Ans 31:

Class : Class 10

Ans 32:

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

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Subject :NSO    Class : Class 3

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Subject :NSO    Class : Class 8

Ans 1:

Class : Class 8
please explain this question.

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
Can someone please explain this question?

Ans 4:

Class : Class 9
please explain this question

Ans 5:

Class : Class 9

Ans 6:

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

Ans 7:

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

Ans 8:

Class : Class 8
please explain this question.

Ans 9:

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

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 9

Ans 2:

Class : Class 4
correct answer is D

Ans 3:

Class : Class 4
It is option B

Ans 4:

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

Ans 5:

Class : Class 8
The correct answer is C

Ans 6:

Class : Class 4

Ans 7:

Class : Class 5

Ans 8:

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 9:

Class : Class 8

Ans 10:

Class : Class 5

Ans 11:

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 .

Ans 12:

Class : Class 9
the answer is d

Ans 13:

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

Ans 14:

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

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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 6

Ans 3:

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

Ans 4:

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

Ans 5:

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

Ans 6:

Class : Class 2

Ans 7:

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

Ans 8:

Class : Class 5
where the h

Ans 9:

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

Ans 10:

Class : Class 5
report error

Ans 11:

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

Ans 12:

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

Ans 13:

Class : Class 5

Ans 14:

Class : Class 5
There is no question!

Ans 15:

Class : Class 6
no question.report error please

Ans 16:

Class : Class 10
question is incomplete

Ans 17:

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

Ans 18:

Class : Class 6

Ans 19:

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

Ans 20:

Class : Class 9
question is incomplete

Ans 21:

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

Ans 22:

Class : Class 5
The question is incomplete

Ans 23:

Class : Class 4

Ans 24:

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

Ans 25:

Class : Class 6
Where is the question!?

Ans 26:

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

Ans 27:

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

Ans 28:

Class : Class 5
this is not a question

Ans 29:

Class : Class 5
what.

Ans 30:

Class : Class 9
No relevant question

Ans 31:

Class : Class 7
they did not give the question .

Ans 32:

Class : Class 5

Ans 33:

Class : Class 6

Ans 34:

Class : Class 6

Ans 35:

Class : Class 6
there is no proper question?

Ans 36:

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

Ans 37:

Class : Class 4
where is the questionnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnn

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Subject :NSO    Class : Class 8

Ans 1:

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

Ans 2:

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

Ans 3:

Class : Class 8
explain please....

Ans 4:

Class : Class 6
Thank You Mr.Rahul

Ans 5:

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 6:

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

Ans 7:

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

Ans 8:

Class : Class 8

Post Your Answer

Subject :NSO    Class : Class 6

Ans 1:

Class : Class 6
Answer can be A

Ans 2:

Class : Class 6
D

Ans 3:

Class : Class 7

Ans 4:

Class : Class 4
D

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Subject :NSO    Class : Class 6

Ans 1:

Class : Class 6
pls explain how the answer is bBTW: your answer is correct

Ans 2:

Class : Class 9
When a battery is constructed such that all the positive terminal of the cells are connected to a same point and all the negative terminals of the cells are connected to another point then the grouping of cells in this manner is called the Parallel Grouping of cells. The two end terminals of the construct where all the positive and negative terminals of the cells are connected act as the corresponding terminal of the battery.

Ans 3:

Class : Class 7
according to me D is correct

Ans 4:

Class : Class 6
According to me D is the correct answer as a wire should be connected from a terminal of a battery to the - terminal of the battery for longer stay of electric circuit, and this rule is satisfied by the circuit shown in option D.

Ans 5:

Class : Class 6
How many times will olympiad confuse us its D

Ans 6:

Class : Class 7

Ans 7:

Class : Class 6
pls explain how the answer is B

Ans 8:

Class : Class 3
D is the correct answer

Ans 9:

Class : Class 8
pls explain how the answer is B

Ans 10:

Class : Class 6
According to me D is the correct answer

Ans 11:

Class : Class 10
D is the correct answer.

Ans 12:

Class : Class 6
D

Ans 13:

Class : Class 7

Ans 14:

Class : Class 6

Ans 15:

Class : Class 9

Ans 16:

Class : Class 9
D is definitely the correct answer

Ans 17:

Class : Class 7

Ans 18:

Class : Class 6

Ans 19:

Class : Class 9
Answer is B

Ans 20:

Class : Class 10

Ans 21:

Class : Class 6
Answer B is the correct answer as the question specified for the arrangement which will allow the bulb to stay lighted for the longest possible time. Option B is connected as One cell as per the circuit (all connections are in parallel), While Option D is in Series (in case of failure of one cell, the circuit will not work as the current will not pass through the cell)

Ans 22:

Class : Class 8

Ans 23:

Class : Class 6

Ans 24:

Class : Class 7

Ans 25:

Class : Class 6
the answer is D

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