National Science Olympiad Forum By SOF Olympiad Trainer - Page 571

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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 6

Ans 2:

Class : Class 7
Seriously? The answer is D. It's a "RAP" not a "WRAP" and it is NATIONAL SCIENCE OLYMPIAD not "French, Spanish or Japanese Shing Shong" science Olympiad.

Ans 3:

Class : Class 10
It is D

Ans 4: (Master Answer)

Class : Class 1

Ans 5:

Class : Class 5
D

Ans 6:

Class : Class 9
Seriously option c are tongs or tweezers

Ans 7:

Class : Class 4
D

Ans 8:

Class : Class 8
BUOYANT FORCE IS PROPORTIONAL TO VOLUME DISPLACED NOT WEIGHT

Ans 9:

Class : Class 5
it surely is d :(

Ans 10:

Class : Class 5
It is D. And it is SOF not JSS.

Ans 11:

Class : Class 5
how???

Ans 12:

Class : Class 6

Ans 13:

Class : Class 5
ans is d

Ans 14:

Class : Class 5
its a

Ans 15:

Class : Class 8
it is d

Ans 16:

Class : Class 5
From Athiya Mahapatra: Option)a As force Q and Z is Gravitational Force.

Ans 17:

Class : Class 6
answer is d

Ans 18:

Class : Class 4
l

Ans 19:

Class : Class 5
How can it be A??i did DD

Ans 20:

Class : Class 5
D

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Subject :NSO    Class : Class 8

The semi-arid plains of a particular region show a pattern of alternating yellow and black stripes on the ground. The yellow stripes consist of land covered by ripening wheat. The black stripes are bare soil on which no crop is grown but farmers use herbicides or tillage to remove any weeds that try to grow in that region.
Why do farmers in this region manage soils in this way?

A Farmers put the half of their land to rest for minimising erosion and soil degradation.
B Farmers discourage transpiration in the wheat plantation by allowing free evaporation from the soil of the bare stripes.
C Farmers try to store some part of one year’s rainwater in the soil under the bare stripes and use that water to supplement the rain on wheat crop planted the next year.
D All of these


Ans 1:

Class : Class 9
d

Ans 2:

Class : Class 9
D

Ans 3:

Class : Class 6
D

Ans 4:

Class : Class 8

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Subject :NSO    Class : Class 4

Ans 1:

Class : Class 5
llllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllll

Ans 2:

Class : Class 4
B is the answer because bubbles are melting inside a pack cointanier so that procces is called as condenstation.

Ans 3:

Class : Class 4
B is the answer

Ans 4:

Class : Class 8

Ans 5:

Class : Class 8
how is B correct??????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????

Ans 6:

Class : Class 8

Ans 7:

Class : Class 4
C is correct

Ans 8:

Class : Class 4
b is correct shivan dpga

Ans 9:

Class : Class 5
lllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllkkkkkkkkk

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Subject :NSO    Class : Class 4

Ans 1:

Class : Class 2

Ans 2:

Class : Class 3
The answer is b

Ans 3:

Class : Class 4
B

Ans 4:

Class : Class 2
its b

Ans 5:

Class : Class 5
thanks Jaya Shree

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Subject :NSO    Class : Class 4

Ans 1:

Class : Class 5
D IS THE ANSWER

Ans 2:

Class : Class 7
D is correct as when you will unscramble the other options all of them prevent soil erosion but D will not (A-embankments B-terrace farming C-afforestation D-overgrazing).....😄

Ans 3:

Class : Class 4
why option d that is overgrazing.... why not Terrace farming that is b

Ans 4:

Class : Class 5
No doubt it is D ( A - EmbankmentB- Terrace FarmingC- Afforestation D - Overgrazing )( Others prevent soil erosion )

Ans 5:

Class : Class 4
D is the correct answer

Ans 6:

Class : Class 5

Ans 7:

Class : Class 8
its [d] -overgrazing

Ans 8: (Master Answer)

Class : Class 1

Ans 9:

Class : Class 4
the ans is D overgrazing

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Subject :NSO    Class : Class 8

Ans 1:

Class : Class 8
But what if s the pattern.

Ans 2: (Master Answer)

Class : Class 1
The correct answer is A.

Ans 3:

Class : Class 7
What is the explanation for it being A?

Ans 4:

Class : Class 8

Ans 5:

Class : Class 6

Ans 6:

Class : Class 8
count the lines and toatal horizontally. its 10 for first row, 12 for second and must be 14 for third, making it figure with 4 lines that is A as correct option.

Ans 7:

Class : Class 9
What is the explanation or the solution for A?

Ans 8:

Class : Class 5
Mr. Admin from revisewise, Noida, please include an explanation for your answer, A.You have, also, not provided a solution for this.

Ans 9:

Class : Class 6
what is the explanation for A

Ans 10:

Class : Class 8
I would like to know what is the logic behind option (A) being the correct answer too.

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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 6
The answer is (a) because when the full moon and new moon are there then the sun, earth and moon are aligned and the sun is also pulling at the sea forming big tides.

Ans 2:

Class : Class 5
i have done this question and they are showing b

Ans 3:

Class : Class 7
B is the answer to this question

Ans 4:

Class : Class 8

Ans 5:

Class : Class 7

Ans 6:

Class : Class 7
It should be B only .

Ans 7:

Class : Class 5
the correct option is b

Ans 8:

Class : Class 7
B

Ans 9:

Class : Class 8
Phases D and H are suitable. Or not?😄

Ans 10:

Class : Class 9
Bbbbbbb!

Ans 11:

Class : Class 7

Ans 12:

Class : Class 8
just because we can see the whole moon during a full moon dosen't mean that on that day there will be the greatest tides as the moon dosen't cut itself into half on 1st and 3rd quarter. So, the answer must depend on the distance of the moon from the earth as the gravitational pull of the moon will have more effect when it is closer to earth and will raise bigger tides. The moon is closest to earth at phases D and H. So, clearly the answer should be A

Ans 13:

Class : Class 6
I do with Harsh Sobti.

Ans 14:

Class : Class 8
Look at the diagram.........the faces of moon closest to the earth are D and H, hence the suitable solution is A

Ans 15:

Class : Class 6
It is a fact that the highest tides occur when the moon is full or new. In the diagram, the positions F and J are the full moons and new moons, so the correct answer should be B

Ans 16:

Class : Class 7
Class:It should be A

Ans 17:

Class : Class 5
how is it b, it should be a

Ans 18:

Class : Class 8
Even I think it is A

Ans 19:

Class : Class 6
Ohh yeah,, it is A

Ans 20:

Class : Class 8

Ans 21:

Class : Class 6
It is B. Don't go on the picture. Full and new moon are always closer to Earth.

Ans 22:

Class : Class 8
Answer is B only.

Ans 23:

Class : Class 5
d and h are only the answers..

Ans 24:

Class : Class 5

Ans 25:

Class : Class 8
It is (A)

Ans 26:

Class : Class 7

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Subject :NSO    Class : Class 6

Ans 1:

Class : Class 10
the answer should be option d

Ans 2:

Class : Class 10
the answer should be option d

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Subject :NSO    Class : Class 3

Ans 1:

Class : Class 10

Ans 2:

Class : Class 3

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Subject :NSO    Class : Class 7

Ans 1:

Class : Class 8
it should be D

Ans 2:

Class : Class 9
D is answer as low pressure exists both in equator and 60° lattitude

Ans 3:

Class : Class 9
it should be d

Ans 4:

Class : Class 7
it has to be d

Ans 5:

Class : Class 8
answer definitely option d

Ans 6:

Class : Class 7
The correct answer of this question Is option d

Ans 7: