National Science Olympiad Forum By SOF Olympiad Trainer - Page 161

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Subject :NSO    Class : Class 8

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Subject :NSO    Class : Class 8

Ans 1:

Class : Class 9

Ans 2:

Class : Class 8

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 8

Ans 3:

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 4:

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 5:

Class : Class 6
Exactly right!

Ans 6:

Class : Class 7
wth is this question the diagram or the question has no relaiton to the option

Ans 7:

Class : Class 3
wrong questionno relation between the diagram and optionno sense

Ans 8:

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

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Subject :NSO    Class : Class 7

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Subject :NSO    Class : Class 6

Ans 1:

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

Ans 2:

Class : Class 6
shall be BBBBBBBBBBBBBBBBBBBBBBBBBBB

Ans 3:

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

Ans 4:

Class : Class 6

Ans 5:

Class : Class 6

Ans 6:

Class : Class 6

Ans 7:

Class : Class 6
it should be ccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccc

Ans 8:

Class : Class 6
North and South attract each other. Since the compass is placed in the middle of the bar magnet and not ON it and the North pole of the compass needle can face the South pole of the magnet diagonally only, should not the correct answer be C? Also, the north pole of the Earth's magnetic field should not come into consideration here, I think.

Ans 9:

Class : Class 8

Ans 10:

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 11:

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.

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

Ans 2:

Class : Class 7

Ans 3:

Class : Class 6

Ans 4:

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 5:

Class : Class 6
The answer is 9m only, as there are 2 methods: 1. 12 2=14m. 14-5=9m. 2. 12-5=7m. 7 2=9m.

Ans 6:

Class : Class 6

Ans 7:

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

Ans 8:

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

Ans 9:

Class : Class 8
Does anyone understand this?

Ans 10:

Class : Class 6
9 should be the answer

Ans 11:

Class : Class 9
Please explain

Ans 12:

Class : Class 7

Ans 13:

Class : Class 6
Kindly explain.......

Ans 14:

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

Ans 15:

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

Ans 16:

Class : Class 7
It's nine.

Ans 17:

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

Ans 18:

Class : Class 7
answer should be 9

Ans 19:

Class :
Please give more questions like this

Ans 20:

Class : Class 7
How 11cm

Ans 21:

Class : Class 6
answer is 9

Ans 22:

Class : Class 7
Tis is not in synopsis

Ans 23:

Class : Class 7

Ans 24:

Class : Class 6
Should be ( as 12 2

Ans 25:

Class : Class 8
Can anyone please explain?

Ans 26:

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 27:

Class : Class 6
please explain

Ans 28:

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 29:

Class : Class 7
The answer should be 9

Ans 30:

Class : Class 6

Ans 31:

Class : Class 9

Ans 32:

Class : Class 8
Yes austin

Ans 33:

Class : Class 6

Ans 34:

Class : Class 6
explain

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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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