National Science Olympiad Forum By SOF Olympiad Trainer - Page 143

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Subject :NSO    Class : Class 8

Ans 1:

Class : Class 9

Ans 2:

Class : Class 8

Ans 3:

Class : Class 9

Ans 4:

Class : Class 8

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Subject :NSO    Class : Class 7

Ans 1:

Class : Class 8
THAT DOESN'T MAKE SENSE. the diagram has no relation to the questions or the options because the figure of the concentration of oxygen in blood of something but the options and the questions are related to plants. the labels in the diagram are P,Q,R,S meanwhile the labels in the questions areX,Y,Z. There are a lot of errors like this that I am facing nowadays so I would kindly request S O F to please correct these issues ,specially in chapterwise

Ans 2:

Class : Class 7
wrong diagram according to the question!!

Ans 3:

Class : Class 2
wrong questionno relation between the diagram and optionno sense

Ans 4:

Class : Class 6
Exactly right!

Ans 5:

Class : Class 8

Ans 6:

Class : Class 7

Ans 7:

Class : Class 8
With due respect, I'd like to bring in SOF's notice that the diagram in the above question is incorrect. The diagram given above is of the concentration of blood in four men, whereas here, we have asked about the functions of some marked plant parts. I ask SOF to rectify this error,

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Subject :NSO    Class : Class 7

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Subject :NSO    Class : Class 6

Ans 1:

Class : Class 7
The earth's north pole acts like a south pole to the magnet as it attracts the north pole of a magnet (The earth's north pole attracts the north pole of a magnet). This means that the needle of a compass is always the north pole. So, the needle will point to the south pole of the other magnet. In simple words, the North pole of the earth is actually the south pole for a magnet.

Ans 2:

Class : Class 6
Shouldn't the correct answer be (A), since a compass needle ALWAYS points in the North Direction? Pls Help.

Ans 3:

Class : Class 6

Ans 4:

Class : Class 8

Ans 5:

Class : Class 6
The needle should point towards South pole because the Earth's North Pole is actually the South pole of a bar magnet. Compass needle always points to the geographical North pole.

Ans 6:

Class : Class 6
shall be BBBBBBBBBBBBBBBBBBBBBBBBBBB

Ans 7:

Class : Class 6

Ans 8:

Class : Class 6
But a compass always points to the magnetic north pole, not geographic north pole right?

Ans 9:

Class : Class 6
it should be ccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccc

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Subject :NSO    Class : Class 8

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Subject :NSO    Class : Class 6

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Subject :NSO    Class : Class 6

Ans 1:

Class : Class 8
Does anyone understand this?

Ans 2:

Class : Class 6

Ans 3:

Class : Class 6

Ans 4:

Class : Class 8
Can anyone please explain?

Ans 5:

Class : Class 6
explain

Ans 6:

Class : Class 2
12-5 =7 7 2=9answer is 9

Ans 7:

Class : Class 7

Ans 8:

Class : Class 7
the distance in the mirror of boy y would be 9m but distance from mirror to boy x would be 9 plus 2= 11

Ans 9:

Class : Class 7
@ Rachita Gupta-I don't know I'm confused now.

Ans 10:

Class : Class 6
How 11cm

Ans 11:

Class :
Please give more questions like this

Ans 12:

Class : Class 6
answer is 9

Ans 13:

Class : Class 6

Ans 14:

Class : Class 6
9 should be the answer

Ans 15:

Class : Class 8

Ans 16:

Class : Class 6
Here it is asking how far away boy Y would APPEAR to be in the mirror to boy X, as in, from boy X's perspective. Y is 12 m away from the MIRROR. He moves 5 m closer12-5=7This is where confusion may set in. A lot of people have added X's distance from the mirror(2 m)7 2=9Here, we are getting the total as 9 m.. However, it is also necessary to add 2 m for the reflected ray to travel to X so that he can see the image.9 2=11Hence, the answer is 11 m.

Ans 17:

Class : Class 6
please explain

Ans 18:

Class : Class 6

Ans 19:

Class : Class 6
Should be ( as 12 2

Ans 20:

Class : Class 8
Please explain

Ans 21:

Class : Class 7
Kindly explain.......

Ans 22:

Class : Class 7
it is 9m as 12m - 5m = 7m , 7m 2m = 9m , kindly the correct answer is 9m .

Ans 23:

Class : Class 7
It's nine.

Ans 24:

Class : Class 6

Ans 25:

Class : Class 7
@Rachita Gupta- They are asking how far away boy-y would appear to be from BOY-X not the mirror so I'm guessing it should be 9m.

Ans 26:

Class : Class 2
12-5=77*2=14that should be the answer

Ans 27:

Class : Class 8
Yes austin

Ans 28:

Class : Class 7

Ans 29:

Class : Class 8
Correct answer is 9m. Already explained in olympaid prep-guide book.

Ans 30:

Class : Class 7
answer should be 9

Ans 31:

Class : Class 6
The answer should be 9m as 12 2=14-5=9

Ans 32:

Class : Class 7
The answer should be 9

Ans 33:

Class : Class 7
Tis is not in synopsis

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Subject :NSO    Class : Class 2

Ans 1:

Class : Class 7
It is so easy

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Subject :NSO    Class : Class 10

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Subject :NSO    Class : Class 8

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