National Science Olympiad Forum By SOF Olympiad Trainer - Page 611

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Subject :NSO    Class : Class 6

Ans 1:

Class : Class 7
The poles are end point of the magnet ,so the north pole should be P.

Ans 2:

Class : Class 8
it has started magnetising from Q SO THATS WHY IT IS TELLING THAT Q WILL BE THE NORTH SEEKING POLE.

Ans 3:

Class : Class 7
it will be P!!!!!!!!!!!!!

Ans 4:

Class : Class 6
I didnt understand how it is R, can someone explain? Because according to me, the first point of contact is Q, but maybe that's not how it works....

Ans 5:

Class : Class 7
In the above process of magnetisation, the magnet makes its first contact with the iron rod on place R, so R would be the North pole of the magnetised iron bar.

Ans 6:

Class : Class 6
IT WILL BE P!

Ans 7:

Class : Class 7
The answer is P as you can clearly see the iron rod should allow the magnetism to flow like what happens when you chain a nail, even though you are affecting only the top part the whole screw is affected hence proving the answer is wrong

Ans 8:

Class : Class 6
A IS TH CORRECT ANSWER. In the figure they started stoking the iron piece from point P which is the starting of the iron rod. so the correct answer is A.....

Ans 9:

Class : Class 9
Q or R?????? PLEASE EXPLAIN MASTER ANSWER!

Ans 10:

Class : Class 8
The answer is B

Ans 11:

Class : Class 6
N POLE ALWAYS GIVE THAT'S WHY A

Ans 12:

Class : Class 9
It should be a

Ans 13:

Class : Class 9
Yes it should be A ......because it is not possible that some of the iron bar is magnet and some is iron ....in the given figure starting of the stroke is point is Q but before that is point P which is starting of the rod so the CORRECT answer is A ..

Ans 14:

Class : Class 7
A

Ans 15:

Class : Class 9
see the solution the magnet gets in contact with q so it is the correct ans

Ans 16:

Class : Class 10
The magnet first makes contact with Q, so, it is the North Pole of the magnet

Ans 17:

Class : Class 8
B IS A WRONG ANSWER.

Ans 18:

Class : Class 6
The correct answer is (B),Q because the magnetic contact starts on Q and not on P.

Ans 19:

Class : Class 7
The correct answer is (B) because Q is the first point of contact.

Ans 20:

Class : Class 6
AS NORTH POLE INTRODUCED AT Q PART OF THE IRON ROD SO Q WILL BE NORTH POLE.

Ans 21:

Class : Class 8
I agree with jigishal

Ans 22:

Class : Class 9
At first, I also thought that it will be A but if you see the figure closely, you can see that the magnet first comes in contact with point Q, it is rubbed till R and is then lifted at R point. So, Point Q would be the north pole and the point R would be the south pole

Ans 23:

Class : Class 9
Will P be the North Pole or Q? So confusing!!🤔🤔

Ans 24:

Class : Class 6
As north seeking pole is geographic south pole so R is north seeking pole. so , basically the south pole is the north seeking pole and as the north pole is facing downwards and starting with Q so south pole will be R . Hence, R is the north seeking pole and option C is the correct option.

Ans 25:

Class : Class 7
A

Ans 26:

Class : Class 8
If you clearly notice, the arrow is first coming in contact with Part Q, and the arrow is above in Part P. First, the magnet comes in contact with part Q, so when the iron rod is magnetised, Part Q will be North pole.

Ans 27:

Class : Class 6

Ans 28:

Class : Class 7
Sorry R would be the south pole because of the reason:Q becomes the North pole, and R, where the magnet is lifted becomes the south pole.

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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 8
It was not there. ;)

Ans 2:

Class : Class 5
who knows they will give or not give

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Subject :NSO    Class : Class 3

Ans 1:

Class : Class 5

Ans 2:

Class : Class 7
C

Ans 3:

Class : Class 3
oh I thinked it is (A)

Ans 4: (Master Answer)

Class : Class 1
The correct answer is C.

Ans 5:

Class : Class 3
The answer is c

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Subject :NSO    Class : Class 6

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Subject :NSO    Class : Class 6

Ans 1:

Class : Class 8
If the filament of bulb Q is fused then the circuit is not being completed because the electrons won't be able to reach the positive terminal as they would be stopped by the broken filament and electricity won't be able to pass through the filament to the negative terminal and due to the two cases that a circuit has to be completed for electricity to move and second one given it is proven that option 'B' is the correct option instead of 'A' 'C' or ' D'

Ans 2:

Class : Class 8
answer should be c as the wire is connecting to p and r ALSO IF THE FILAMENT IS BROKEN ONLY Q CAN NOT LIGHT UP.

Ans 3:

Class : Class 10
UHHH How answer D???

Ans 4:

Class : Class 8

Ans 5:

Class : Class 8
I m

Ans 6:

Class : Class 8
dddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddd

Ans 7:

Class : Class 4
ccc

Ans 8:

Class : Class 10

Ans 9:

Class : Class 7
ya i bet it is c

Ans 10:

Class : Class 8
I meant option 'D' not option B sorry for the mistake in my arguement

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Subject :NSO    Class : Class 6

Ans 1:

Class : Class 8
I feel it is not decreasing but increasing so answer will be a

Ans 2:

Class : Class 6
i also want to know the same question

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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 8
Due to gravity, both will move downwards, so the correct answer is d

Ans 2:

Class : Class 8
answer is D

Ans 3:

Class : Class 5
i had this correct but sof result is showing correct answer is d and i have writen d. BAD MALFUNCTION AND NEGATIVE MARKING IS THERE

Ans 4:

Class : Class 5

Ans 5:

Class : Class 9
D

Ans 6:

Class : Class 8
answer is D

Ans 7:

Class : Class 6
Due to the cooling effect of ice water, the air in the U-tube contracts, due to which the red ink X and Y move downwards.

Ans 8:

Class : Class 8
answer is D

Ans 9:

Class : Class 5

Ans 10:

Class : Class 8
There is ice water so it doesn't mean that gravity is gone man

Ans 11: (Master Answer)

Class : Class 1

Ans 12:

Class : Class 6
answer is d because due to the incoming air because of cold water if the water was hot then the ink drops would move up

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Subject :NSO    Class : Class 4

Ans 1:

Class : Class 4

Ans 2:

Class : Class 4

Ans 3:

Class : Class 3
ans is d!!

Ans 4:

Class : Class 3
ans should be a coz liver only secretes bile which digests fats not pancreas

Ans 5:

Class : Class 4
answer is D

Ans 6:

Class : Class 7
D

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Subject :NSO    Class : Class 6

Ans 1:

Class : Class 9
Answer should be b

Ans 2:

Class : Class 8
It should be c. try the experiment.

Ans 3:

Class : Class 6
bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb

Ans 4:

Class : Class 1
I THINK THERE IS SOME ISSUE FROM THE WEBSITE. ANS SHOULD BE B

Ans 5:

Class : Class 4
its b not c

Ans 6:

Class : Class 10
answer is B

Ans 7:

Class : Class 6
b

Ans 8:

Class : Class 9
it should be B....

Ans 9:

Class : Class 6
request explanation

Ans 10:

Class : Class 9
it should be B not C

Ans 11:

Class : Class 3
In the case of a plane mirror, the size of the image is equal to the size of the object, irrespective of the distance of the object from the mirror

Ans 12:

Class : Class 8
Hello There....I have answered test.....Answer is CSolution:The image formed in the plane mirror is always of the same size as that of the object.

Ans 13:

Class : Class 7
answer should be (B)

Ans 14:

Class : Class 1
the correct answer is b

Ans 15:

Class : Class 6
The answer should be option B.

Ans 16:

Class : Class 7
Ans should be b

Ans 17:

Class : Class 9
it should be B

Ans 18:

Class : Class 6
come on who made this tests answer key go look at your mirror its b

Ans 19:

Class : Class 9

Ans 20:

Class : Class 7
B

Ans 21:

Class : Class 6

Ans 22:

Class : Class 6

Ans 23:

Class : Class 9

Ans 24:

Class : Class 8
it should be opt b

Ans 25:

Class : Class 7

Ans 26:

Class : Class 6
ANSWER IS B

Ans 27:

Class : Class 6
b,its b.

Ans 28:

Class : Class 6
answer is b,because the size of the image increases when we move towards it

Ans 29:

Class : Class 6

Ans 30:

Class : Class 1
ans should be B..

Ans 31:

Class : Class 6
Yes b is correct

Ans 32:

Class : Class 6
Parth Wave your hand towards the mirror you silly!

Ans 33:

Class : Class 1
It should be B!!

Ans 34:

Class : Class 6
C is correct as the girl is not seeing the image. If you play or know Minecraft, you can be like in the spectator mode and if you have a mirror mod, then you will see the mob with the same size of the image whether it is near or not.

Ans 35:

Class : Class 6
bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb!!!!!!!!!!!!!!!!!!

Ans 36:

Class : Class 10
B is the correct option

Ans 37:

Class : Class 7
thank you

Ans 38:

Class : Class 9
Bbbbbbbb

Ans 39:

Class : Class 7
correct option will be (B)

Ans 40:

Class : Class 7
B

Ans 41:

Class : Class 4
b b b b b bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb

Ans 42:

Class : Class 8
it should be b

Ans 43:

Class : Class 8
request solution

Ans 44:

Class : Class 3
it is bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbsof please change it quickly

Ans 45:

Class : Class 6

Ans 46:

Class : Class 7
Answer should be B because if you move towards a mirror ,your image will get bigger.

Ans 47:

Class : Class 6
ANS IS B

Ans 48:

Class : Class 7
It is just a printing mistake. It happens with many questions and the correct answer is option B.

Ans 49:

Class : Class 6
The correct answer is B

Ans 50:

Class : Class 9
The correct option is b as if we will move towards mirror our image formed will increase in size paulette don't know the answer

Ans 51:

Class : Class 9
B

Ans 52:

Class : Class 7
It should be b

Ans 53:

Class : Class 6
Answer is B because if you move towards a mirror ,your image will get bigger.

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Subject :NSO    Class : Class 7

Ans 1:

Class : Class 7
ans : a, in case of option c & d no change of soil fertility in case of option b cyclone do not dissolve soil or rocks in option a saline water can change the soil fertility

Ans 2:

Class : Class 7
ans : a, in case of option c & d no change of soil fertility in case of option b cyclone do not dissolve soil or rocks in option a saline water can change the soil fertility

Ans 3:

Class : Class 7
a

Ans 4:

Class : Class 8

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