National Science Olympiad Forum By SOF Olympiad Trainer - Page 143

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Subject :NSO    Class : Class 7

Ans 1:

Class : Class 7
how ???

Ans 2:

Class : Class 9

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Subject :NSO    Class : Class 9

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Subject :NSO    Class : Class 8

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Subject :NSO    Class : Class 8

Ans 1:

Class : Class 8

Ans 2:

Class : Class 9

Ans 3:

Class : Class 8

Ans 4:

Class : Class 9

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Subject :NSO    Class : Class 7

Ans 1:

Class : Class 7

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 8

Ans 5:

Class : Class 6
Exactly right!

Ans 6:

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,

Ans 7:

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

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

Ans 3:

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

Ans 4:

Class : Class 6

Ans 5:

Class : Class 6
shall be BBBBBBBBBBBBBBBBBBBBBBBBBBB

Ans 6:

Class : Class 8

Ans 7:

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 8:

Class : Class 6

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
Can anyone please explain?

Ans 2:

Class : Class 7
answer should be 9

Ans 3:

Class : Class 6
How 11cm

Ans 4:

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

Ans 5:

Class : Class 7

Ans 6:

Class : Class 8
Yes austin

Ans 7:

Class : Class 6

Ans 8:

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

Ans 9:

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

Ans 10:

Class : Class 7
It's nine.

Ans 11:

Class : Class 6
9 should be the answer

Ans 12:

Class : Class 8
Does anyone understand this?

Ans 13:

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

Ans 14:

Class : Class 6
answer is 9

Ans 15:

Class : Class 8
Please explain

Ans 16:

Class : Class 6
Should be ( as 12 2

Ans 17:

Class : Class 7
Tis is not in synopsis

Ans 18:

Class : Class 7
The answer should be 9

Ans 19:

Class : Class 6

Ans 20:

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 21:

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

Ans 22:

Class : Class 7

Ans 23:

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

Ans 24:

Class : Class 8

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 6

Ans 27:

Class : Class 6
explain

Ans 28:

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

Ans 29:

Class : Class 6

Ans 30:

Class :
Please give more questions like this

Ans 31:

Class : Class 6
please explain

Ans 32:

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 33:

Class : Class 6

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