National Science Olympiad Forum By SOF Olympiad Trainer - Page 558

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Subject :NSO    Class : Class 6

Ans 1:

Class : Class 9
It should be a

Ans 2:

Class : Class 8
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 3:

Class : Class 8
B IS A WRONG ANSWER.

Ans 4:

Class : Class 8
I agree with jigishal

Ans 5:

Class : Class 8
Q or R?????? PLEASE EXPLAIN MASTER ANSWER!

Ans 6:

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

Ans 7:

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

Ans 8:

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

Ans 9:

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

Ans 10:

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

Ans 11:

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 12:

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 13:

Class : Class 7
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 14:

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 15:

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 16:

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

Ans 17:

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

Ans 18:

Class : Class 8
The answer is B

Ans 19:

Class : Class 7
The poles are end point of the magnet ,so the north pole should 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 9
Will P be the North Pole or Q? So confusing!!🤔🤔

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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 3
oh I thinked it is (A)

Ans 2:

Class : Class 3
The answer is c

Ans 3:

Class : Class 6
C

Ans 4:

Class : Class 5

Ans 5: (Master Answer)

Class : Class 1
The correct answer is C.

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Subject :NSO    Class : Class 6

Read the given statements and select the correct option.
Statement 1 - We should use jute bags instead of plastic bags for carrying goods.
Statement 2 - Jute bags are cheaper than plastic bags.

ABoth statements 1 and 2 are true and statement 2 is the correct explanation of statement 1.
BBoth statements 1 and 2 are true but statement 2 is not the correct explanation of statement 1.
CStatement 1 is true and statement 2 is false.
DBoth statements 1 and 2 are false.


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Subject :NSO    Class : Class 6

Ans 1:

Class : Class 4
ccc

Ans 2:

Class : Class 7
dddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddd

Ans 3:

Class : Class 7
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 7
UHHH How answer D???

Ans 5:

Class : Class 7
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

Ans 7:

Class : Class 7
I m

Ans 8:

Class : Class 7
I meant option 'D' not option B sorry for the mistake in my arguement

Ans 9:

Class : Class 9

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:

Class : Class 8
answer is D

Ans 3:

Class : Class 5

Ans 4:

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

Ans 5: (Master Answer)

Class : Class 1

Ans 6:

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 7:

Class : Class 8
D

Ans 8:

Class : Class 7
There is ice water so it doesn't mean that gravity is gone man

Ans 9:

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 10:

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 11:

Class : Class 8
answer is D

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Subject :NSO    Class : Class 4

Refer to the given diagram of human digestive system and select the correct option regarding parts, X and Y.


AIn part X complete digestion of all components of food takes place.
BIf part Y is removed in a person, then he/she will not be able to digest carbohydrates at all.
CBoth X and Y pour their digestive juices in small intestine for digestion of various components of food.
DY secretes a digestive juice which is capable of digesting fats, proteins and carbohydrates present in food.


Ans 1:

Class : Class 3
ans is d!!

Ans 2:

Class : Class 7
D

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 4

Ans 6:

Class : Class 4
answer is D

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Subject :NSO    Class : Class 6

Ans 1:

Class : Class 1
ans should be B..

Ans 2:

Class : Class 8
it should be opt b

Ans 3:

Class : Class 9

Ans 4:

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 5:

Class : Class 9
B

Ans 6:

Class : Class 9
it should be B not C

Ans 7:

Class : Class 7
thank you

Ans 8:

Class : Class 3
it is bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbsof please change it quickly

Ans 9:

Class : Class 6
b,its b.

Ans 10:

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 11:

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

Ans 12:

Class : Class 4
b b b b b bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb

Ans 13:

Class : Class 7
B

Ans 14:

Class : Class 6
b

Ans 15:

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

Ans 16:

Class : Class 6

Ans 17:

Class : Class 6
ANSWER IS B

Ans 18:

Class : Class 1
It should be B!!

Ans 19:

Class : Class 10
B is the correct option

Ans 20:

Class : Class 6
request explanation

Ans 21:

Class : Class 9

Ans 22:

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

Ans 23:

Class : Class 7
It should be b

Ans 24:

Class : Class 6
ANS IS B

Ans 25:

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

Ans 26:

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

Ans 27:

Class : Class 7

Ans 28:

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

Ans 29:

Class : Class 9
it should be B

Ans 30:

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

Ans 31:

Class : Class 7
request solution

Ans 32:

Class : Class 6
Yes b is correct

Ans 33:

Class : Class 6
The answer should be option B.

Ans 34:

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

Ans 35:

Class : Class 1
the correct answer is b

Ans 36:

Class : Class 6
bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb

Ans 37:

Class : Class 9
Answer should be b

Ans 38:

Class : Class 9
Bbbbbbbb

Ans 39:

Class : Class 4
its b not c

Ans 40:

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

Ans 41:

Class : Class 7
correct option will be (B)

Ans 42:

Class : Class 10
answer is B

Ans 43:

Class : Class 6
B

Ans 44:

Class : Class 7
Ans should be b

Ans 45:

Class : Class 8
it should be b

Ans 46:

Class : Class 7
answer should be (B)

Ans 47:

Class : Class 6

Ans 48:

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.

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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
a

Ans 3:

Class : Class 8

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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