National Science Olympiad Forum By SOF Olympiad Trainer - Page 641

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Subject :NSO    Class : Class 8

Ans 1:

Class : Class 9
Friction always opposes motion but while drawing a line on a paper, the frictional force acts in the opposite direction in which the tip of the pen acts / the line is drawn. I think all options are incorrect as 'statement 1' is wrong but 'statement 2' is right

Ans 2:

Class : Class 8
Yes , I also agree that friction always opposes motion and the following options are incorrect as *Statement 1* is incorrect and *Statement 2* is correct. There is surely some error.

Ans 3:

Class : Class 9
I agree with ANUBHA MAHAJAN as friction does not always oppose the motion.

Ans 4:

Class : Class 9
But friction always opposes motion...then how are they saying that option c is true?

Ans 5:

Class : Class 8
Statement 2 is correct while Statement 1 incorrect as frictions is defined as a force which opposes motion and it would not be frictional force if it is not opposing motion that why there has to be a option E.

Ans 6:

Class : Class 10
not in all cases friction opposes, this is proved from statement 1 as friction acts backward on the paper and it will act forward on the direction where the pencil is moved

Ans 7:

Class : Class 9

Ans 8:

Class : Class 8
All the options must be incorrect as friction always opposes motion and friction acts in direction opposite of force applied but there is no option saying this

Ans 9:

Class : Class 7
Technically, all of the options are incorrect, as Statement 1 is false and Statement 2 is true.

Ans 10:

Class : Class 5
all the options are incorrect as statement 1 is false and statement 2 is true.so the answer should look like:(iv)none of these

Ans 11:

Class : Class 8
You

Ans 12:

Class : Class 8
IT 'S ANSWER SHOULD BE D?

Ans 13:

Class : Class 5

Ans 14:

Class : Class 9
Statement 1 is false while Statement 2 is true

Ans 15:

Class : Class 8
Why dont they update the answers and options?? THERE SHOULD BE A NEW OPTION HERE

Ans 16:

Class : Class 9
No statement 1 is correct where as statement 2 is also correct

Ans 17:

Class : Class 9

Ans 18:

Class : Class 9
YES THERE IS A LOT OF ERROR IN THE OPTIONS

Ans 19:

Class : Class 8
statement 1 is falsewhereas statement 2 should be true

Ans 20:

Class : Class 8
Friction not always opposes motion, it opposes the relative motion but they should've given examples of it. I have read it in a book but there is no examples there, too. :-?

Ans 21:

Class : Class 9
It should be E first statement is incorrect while second statement is correct.

Ans 22:

Class : Class 5
In my opinion statement 2 is true and statement 1 is false as friction always opposes the motion of an object. Also the friction between the pencil and paper should be exerted in the opposite direction.

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Subject :NSO    Class : Class 5

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Subject :NSO    Class : Class 4

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Subject :NSO    Class : Class 4

Ans 1: (Master Answer)

Class : Class 1
The correct answer is D.

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Subject :NSO    Class : Class 4

Ans 1:

Class : Class 7

Ans 2:

Class : Class 8

Ans 3:

Class : Class 6
So, for an experiment you need multiple values for comparison. This question states that the experiment is to be carried out for four days, meaning that you need to compare four different scenarios. The first one is obviously hot and windy. The four scenarios- hot, windy, calm and cloudy must be paired with each other forming these- hot and windy, hot and calm, windy and cloudy, cloudy and calm- option B

Ans 4:

Class : Class 4

Ans 5:

Class : Class 7
What on earth does guestion mean you idiot and infant

Ans 6:

Class : Class 5
Please somebody explain.

Ans 7:

Class : Class 4
they have not given the solution........ please explain

Ans 8:

Class : Class 2
dude i asked you to explain .Not give the answers because you have done it before.[i am talking to you only, Shaurya uniyal]

Ans 9:

Class : Class 1
Please explain. .....

Ans 10:

Class : Class 8

Ans 11:

Class : Class 3
I think it is B?.?.

Ans 12:

Class : Class 9
please somebody explain......They have not given the solution.............

Ans 13:

Class : Class 4

Ans 14:

Class : Class 9

Ans 15:

Class : Class 4

Ans 16:

Class : Class 4

Ans 17:

Class : Class 4

Ans 18:

Class : Class 5
Thank you, Shailaja Divakar

Ans 19:

Class : Class 6
I don't understand the guestion. Can somebody explain.

Ans 20:

Class : Class 6
C

Ans 21:

Class : Class 6
The meaning of the symbols is not clear.

Ans 22:

Class : Class 4
Can somebody explain the answer to the question?

Ans 23:

Class : Class 3
I agree with Harish Divakar and Ridhima . The ans is b

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Subject :NSO    Class : Class 4

Ans 1: (Master Answer)

Class : Class 1

The correct answer is B.


Ans 2:

Class : Class 6
Hey ! I wrote B only ! They changed my answer !

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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 8
B is the answer

Ans 2:

Class : Class 8
B is the answer

Ans 3:

Class : Class 5
What is the meaning of archimedes[']

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Subject :NSO    Class : Class 7

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Subject :NSO    Class : Class 3

Ans 1:

Class : Class 4
i Do Not KNOW North South East West

Ans 2:

Class : Class 8
D

Ans 3:

Class : Class 1
C

Ans 4:

Class : Class 9
The correct answer is C.

Ans 5:

Class : Class 3
C is the right answer

Ans 6:

Class : Class 5
ANS:C As the sunset in the west the shadow will fall in the east side. so the park would have most shade is Park R

Ans 7:

Class : Class 3
c c c c c c c c c c c c c c c c c c c c c

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Subject :NSO    Class : Class 7

Ans 1:

Class : Class 9
OPTION B IS RIGHT

Ans 2:

Class : Class 7

Ans 3:

Class : Class 7
d

Ans 4:

Class : Class 9

Ans 5:

Class : Class 7
B

Ans 6:

Class : Class 8
OPTION D) IS CORRECT AS WATER IS INEXHAUSTIBLE,FOREST IS EXHAUSTIBLE,METAL IS RECYCLABLE. AND FOSSIL FUEL CANNOT BE RECYCLED AND IT TAKES MILLIONS OF YEARS TO FORM

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