National Science Olympiad Forum By SOF Olympiad Trainer - Page 671

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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
B IS A WRONG ANSWER.

Ans 3:

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

Ans 4:

Class : Class 7
A

Ans 5:

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 6:

Class : Class 7

Ans 7:

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 8:

Class : Class 9
It should be a

Ans 9:

Class : Class 8
The answer is B

Ans 10:

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

Ans 11:

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 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 6
N POLE ALWAYS GIVE THAT'S WHY A

Ans 14:

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

Ans 15:

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 16:

Class : Class 8
I agree with jigishal

Ans 17:

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

Ans 18:

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

Ans 19:

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 20:

Class : Class 7
A

Ans 21:

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

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
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 24:

Class : Class 6
IT WILL BE P!

Ans 25:

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

Ans 26:

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 27:

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

Ans 28:

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....

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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
The answer is c

Ans 2: (Master Answer)

Class : Class 1
The correct answer is C.

Ans 3:

Class : Class 8
C

Ans 4:

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

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

Ans 2:

Class : Class 4
ccc

Ans 3:

Class : Class 10
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 10
UHHH How answer D???

Ans 5:

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 6:

Class : Class 7
ya i bet it is c

Ans 7:

Class : Class 10
I meant option 'D' not option B sorry for the mistake in my arguement

Ans 8:

Class : Class 10
dddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddd

Ans 9:

Class : Class 10
I m

Ans 10:

Class : Class 10

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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 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 2:

Class : Class 9
D

Ans 3:

Class : Class 8
answer is D

Ans 4:

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 5:

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

Ans 6:

Class : Class 8
answer is D

Ans 7:

Class : Class 5

Ans 8:

Class : Class 6

Ans 9:

Class : Class 8
answer is D

Ans 10:

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

Ans 11: (Master Answer)

Class : Class 1

Ans 12:

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

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Subject :NSO    Class : Class 4

Ans 1:

Class : Class 7
D

Ans 2:

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

Ans 3:

Class : Class 4

Ans 4:

Class : Class 3
ans is d!!

Ans 5:

Class : Class 4

Ans 6:

Class : Class 4
answer is D

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Subject :NSO    Class : Class 6

Ans 1:

Class : Class 7
answer should be (B)

Ans 2:

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

Ans 3:

Class : Class 9

Ans 4:

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

Ans 5:

Class : Class 6
b,its b.

Ans 6:

Class : Class 7
B

Ans 7:

Class : Class 6
request explanation

Ans 8:

Class : Class 7

Ans 9:

Class : Class 9
it should be B

Ans 10:

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 11:

Class : Class 9

Ans 12:

Class : Class 9
Bbbbbbbb

Ans 13:

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

Ans 14:

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

Ans 15:

Class : Class 7
Ans should be b

Ans 16:

Class : Class 6
bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb

Ans 17:

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

Ans 18:

Class : Class 10
answer is B

Ans 19:

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

Ans 20:

Class : Class 1
It should be B!!

Ans 21:

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 22:

Class : Class 9
correct option will be (B)

Ans 23:

Class : Class 4
b b b b b bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb

Ans 24:

Class : Class 1
the correct answer is b

Ans 25:

Class : Class 6
ANS IS B

Ans 26:

Class : Class 10
request solution

Ans 27:

Class : Class 6
The answer should be option B.

Ans 28:

Class : Class 7
thank you

Ans 29:

Class : Class 4
its b not c

Ans 30:

Class : Class 7
It should be b

Ans 31:

Class : Class 8
it should be b

Ans 32:

Class : Class 6
Yes b is correct

Ans 33:

Class : Class 8
it should be opt b

Ans 34:

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 35:

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

Ans 36:

Class : Class 7
B

Ans 37:

Class : Class 7

Ans 38:

Class : Class 1
ans should be B..

Ans 39:

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

Ans 40:

Class : Class 9
it should be B not C

Ans 41:

Class : Class 6
b

Ans 42:

Class : Class 6
ANSWER IS B

Ans 43:

Class : Class 10
B is the correct option

Ans 44:

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 45:

Class : Class 6

Ans 46:

Class : Class 7

Ans 47:

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

Ans 48:

Class : Class 9
B

Ans 49:

Class : Class 3
it is bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbsof please change it quickly

Ans 50:

Class : Class 7
The correct answer is B

Ans 51:

Class : Class 6

Ans 52:

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

Ans 53:

Class : Class 9
Answer should be b

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Subject :NSO    Class : Class 7

Ans 1:

Class : Class 7
a

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
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 4:

Class : Class 8

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