National Science Olympiad Forum By SOF Olympiad Trainer - Page 646

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Subject :NSO    Class : Class 4

Ans 1:

Class : Class 4

Ans 2:

Class : Class 5

Ans 3:

Class : Class 3
Alright, so umm seriously the answer should be C also in the question Diagram Y. So, here it is cod liver oil which is semi-liquid = Half liquid and half solid. U can push it a little bit so the answer is C. In the book, it is turmeric powder and the answer is showing B too! I mean powder like seriously. The answer in the book should be D also in the book called Diagram Z. It is POWDER!!!!!!!!!!!!!!!!!!!! Like seriously Powder! They need to understand before writing the question in the book.

Ans 4:

Class : Class 6

Ans 5:

Class : Class 6
Dear friends, the answer is D. There has been an error by the SOF team. Cod liver oil is a liquid, so it will flow out. As diagram Z is showing precisely that, the answer is D.

Ans 6:

Class : Class 6
I think it is syringe in diagram X.

Ans 7:

Class : Class 6
B

Ans 8:

Class : Class 10
Answer is B solid cannot be compressed

Ans 9:

Class : Class 4
LIQIUDS CAN NOT BE COMPRESSED. SO COD LIVER OIL IS IN SYRINGE XXXXXXXX @ RAJVEER

Ans 10:

Class : Class 10
Answer is B solid cannot be compressed

Ans 11:

Class : Class 4
I got it right

Ans 12:

Class : Class 8

Ans 13:

Class : Class 6
Answer is D

Ans 14:

Class : Class 7
the answer is B, you can do the question and see the answer

Ans 15:

Class : Class 4
D

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Subject :NSO    Class : Class 6

Ans 1:

Class : Class 6
(C) should be the ans as .IF the like pole meets each other than they will repel each other

Ans 2:

Class : Class 10
pulling force means attracting force

Ans 3:

Class : Class 6
c is the answer

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Subject :NSO    Class : Class 6

Ans 1:

Class : Class 8
it is wrong, see 12 is the sum of north and south poles but 6 should be the answer!!

Ans 2:

Class : Class 6
6 should be answer

Ans 3:

Class : Class 7
no it is 12 as one piece has two poles so north poles and south poles =6 6=12

Ans 4:

Class : Class 6
It is wrong because they did not ask the total number of poles 😏

Ans 5:

Class : Class 6

Ans 6:

Class : Class 7
THE ANSWER HOULD BE 6 booooooor

Ans 7:

Class : Class 9
Wrong

Ans 8:

Class : Class 10
UTSAV C PATEL from Podar International School SHIVAMOGAClass;It is wrong answer as they did not ask the total number of poles

Ans 9:

Class : Class 9
IT is not correct .... because they did not ask total number of poles ....it should be A {SIX}

Ans 10:

Class : Class 6

Ans 11:

Class : Class 6
a

Ans 12:

Class : Class 10

Ans 13:

Class : Class 6
it should be 6

Ans 14:

Class : Class 9
It is incorrect as there are six north poles and six south poles present in a magnet if it is broken into six pieces

Ans 15:

Class : Class 8

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Subject :NSO    Class : Class 6

Ans 1:

Class : Class 7
A

Ans 2:

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 3:

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

Ans 4:

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

Ans 5:

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 6:

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 7:

Class : Class 6
IT WILL BE P!

Ans 8:

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

Ans 9:

Class : Class 8
I agree with jigishal

Ans 10:

Class : Class 7

Ans 11:

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

Ans 12:

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

Ans 13:

Class : Class 9
It should be a

Ans 14:

Class : Class 8
B IS A WRONG ANSWER.

Ans 15:

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

Ans 16:

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 17:

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 18:

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

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
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 21:

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

Ans 22:

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 23:

Class : Class 7
A

Ans 24:

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

Ans 25:

Class : Class 8
The answer is B

Ans 26:

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

Ans 27:

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 28:

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

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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: (Master Answer)

Class : Class 1
The correct answer is C.

Ans 2:

Class : Class 3
The answer is c

Ans 3:

Class : Class 5

Ans 4:

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

Ans 5:

Class : Class 7
C

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Subject :NSO    Class : Class 6

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Subject :NSO    Class : Class 6

Ans 1:

Class : Class 10
UHHH How answer D???

Ans 2:

Class : Class 4
ccc

Ans 3:

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

Ans 4:

Class : Class 9
I m

Ans 5:

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 6:

Class : Class 10

Ans 7:

Class : Class 9

Ans 8:

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 9:

Class : Class 9
dddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddd

Ans 10:

Class : Class 7
ya i bet it is c

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Subject :NSO    Class : Class 6

Ans 1:

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

Ans 2:

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

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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 8
answer is D

Ans 2: (Master Answer)

Class : Class 1

Ans 3:

Class : Class 8
answer is D

Ans 4:

Class : Class 8
answer is D

Ans 5:

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 6:

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 7:

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

Ans 8:

Class : Class 9
D

Ans 9:

Class : Class 6

Ans 10:

Class : Class 5

Ans 11:

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

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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