National Science Olympiad Forum By SOF Olympiad Trainer - Page 657

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Subject :NSO    Class : Class 6

Ans 1:

Class : Class 9
It should be a

Ans 2:

Class : Class 7
A

Ans 3:

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 4:

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.

Ans 5:

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 6:

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

Ans 7:

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 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 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 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 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 13:

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

Ans 14:

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

Ans 15:

Class : Class 7

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

Ans 18:

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 19:

Class : Class 6
IT WILL BE P!

Ans 20:

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

Ans 21:

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

Ans 22:

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

Ans 23:

Class : Class 7
A

Ans 24:

Class : Class 8
B IS A WRONG ANSWER.

Ans 25:

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

Ans 26:

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 27:

Class : Class 8
I agree with jigishal

Ans 28:

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

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Subject :NSO    Class : Class 5

Ans 1:

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

Ans 2:

Class : Class 8
It was not there. ;)

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Subject :NSO    Class : Class 3

Ans 1:

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

Ans 2: (Master Answer)

Class : Class 1
The correct answer is C.

Ans 3:

Class : Class 7
C

Ans 4:

Class : Class 3
The answer is c

Ans 5:

Class : Class 5

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Subject :NSO    Class : Class 6

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Subject :NSO    Class : Class 6

Ans 1:

Class : Class 9
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 2:

Class : Class 7
ya i bet it is c

Ans 3:

Class : Class 9
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 4:

Class : Class 9

Ans 5:

Class : Class 4
ccc

Ans 6:

Class : Class 10
UHHH How answer D???

Ans 7:

Class : Class 9
I meant option 'D' not option B sorry for the mistake in my arguement

Ans 8:

Class : Class 9
dddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddd

Ans 9:

Class : Class 10

Ans 10:

Class : Class 9
I m

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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: (Master Answer)

Class : Class 1

Ans 3:

Class : Class 5

Ans 4:

Class : Class 8
answer is D

Ans 5:

Class : Class 8
answer is D

Ans 6:

Class : Class 9
D

Ans 7:

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

Ans 8:

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 9:

Class : Class 6

Ans 10:

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 11:

Class : Class 8
answer is D

Ans 12:

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

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Subject :NSO    Class : Class 4

Ans 1:

Class : Class 7
D

Ans 2:

Class : Class 4

Ans 3:

Class : Class 4

Ans 4:

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

Ans 5:

Class : Class 3
ans is d!!

Ans 6:

Class : Class 4
answer is D

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Subject :NSO    Class : Class 6

Ans 1:

Class : Class 9
it should be B not C

Ans 2:

Class : Class 7
The correct answer is B

Ans 3:

Class : Class 7
answer should be (B)

Ans 4:

Class : Class 1
It should be B!!

Ans 5:

Class : Class 8
it should be b

Ans 6:

Class : Class 9
it should be B

Ans 7:

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

Ans 8:

Class : Class 9
Answer should be b

Ans 9:

Class : Class 7
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 10:

Class : Class 9
B

Ans 11:

Class : Class 7
B

Ans 12:

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

Ans 13:

Class : Class 7
Ans should be b

Ans 14:

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

Ans 15:

Class : Class 1
the correct answer is b

Ans 16:

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

Ans 17:

Class : Class 9
correct option will be (B)

Ans 18:

Class : Class 7

Ans 19:

Class : Class 6
Yes b is correct

Ans 20:

Class : Class 9
request solution

Ans 21:

Class : Class 4
b b b b b bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb

Ans 22:

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

Ans 23:

Class : Class 6

Ans 24:

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

Ans 25:

Class : Class 7
thank you

Ans 26:

Class : Class 7
Parth Wave your hand towards the mirror you silly!

Ans 27:

Class : Class 7
It should be b

Ans 28:

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

Ans 29:

Class : Class 9

Ans 30:

Class : Class 7

Ans 31:

Class : Class 10
B is the correct option

Ans 32:

Class : Class 6

Ans 33:

Class : Class 1
ans should be B..

Ans 34:

Class : Class 6
b

Ans 35:

Class : Class 6
bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb

Ans 36:

Class : Class 9
Bbbbbbbb

Ans 37:

Class : Class 9

Ans 38:

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

Ans 39:

Class : Class 6
ANSWER IS B

Ans 40:

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 41:

Class : Class 6
b,its b.

Ans 42:

Class : Class 3
it is bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbsof please change it quickly

Ans 43:

Class : Class 8
it should be opt b

Ans 44:

Class : Class 6
request explanation

Ans 45:

Class : Class 6
The answer should be option B.

Ans 46:

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 47:

Class : Class 10
answer is B

Ans 48:

Class : Class 4
its b not c

Ans 49:

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

Ans 50:

Class : Class 7

Ans 51:

Class : Class 6
ANS IS B

Ans 52:

Class : Class 7
B

Ans 53:

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

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Subject :NSO    Class : Class 7

Ans 1:

Class : Class 8

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 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

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