National Science Olympiad Forum By SOF Olympiad Trainer - Page 613

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Subject :NSO    Class : Class 4

Ans 1:

Class : Class 5
c- 7/6

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Subject :NSO    Class : Class 8

Ans 1:

Class : Class 8
It should be 3 because human ear can hear 20 hz to 20 khz

Ans 2:

Class : Class 8
The answer should be 3 because humans can hear sounds ranging from 20 Hz to 20,000 Hz.

Ans 3:

Class : Class 8
Yes the answer should be 3 because human's Audible range is fron 20HZ TO 20KHZ.And here10 khz,0.1 khz and 1 khz comes Under this but not 100khzThanks.

Ans 4: (Master Answer)

Class : Class 1
The correct answer is A.

Ans 5:

Class : Class 8

Ans 6:

Class : Class 8
It should be 3

Ans 7:

Class : Class 8
It should be 3 😡😡

Ans 8:

Class : Class 8
it should be 3

Ans 9:

Class : Class 10
It should be 3

Ans 10:

Class : Class 8
Sorry it should be 1

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Subject :NSO    Class : Class 2

Ans 1:

Class : Class 2
D

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Subject :NSO    Class : Class 7

Ans 1:

Class : Class 8
I THINK THE ANSWER SHOULD BE D

Ans 2:

Class : Class 7
the answer is A. If you heat a system then that is obvious that its temperature will rise, how can it remain the same when it is heated up. if SOF Olympiad says the answer is C then it has to give a better solution with more examples so that we can understand it better.

Ans 3:

Class : Class 7
latent heat property

Ans 4:

Class : Class 7
its A!!

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Subject :NSO    Class : Class 2

Ans 1:

Class : Class 6
heart because you said no organ will get blood....

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Subject :NSO    Class : Class 5

Jai drew a graph which represented the amount of undigested food in different parts of our alimentary canal, during the process of digestion of a meal. The variables V to Z represent the organs of alimentary canal from mouth to anus.
Select the correct option regarding this.



AThe amount of undigested food should be zero at Z because digestion is completed before the food reaches anus.
BThe amount of undigested food at X and W should be interchanged because there is no digestion in oesophagus.
CA decrease in the amount of undigested food should be first observed in Y only because intestine is the primary site of digestion.
DBoth A and B


Ans 1:

Class : Class 7
(A)

Ans 2:

Class : Class 6

Ans 3:

Class : Class 6

Ans 4:

Class : Class 4
B is the correct answer

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Subject :NSO    Class : Class 6

Ans 1:

Class : Class 8

Ans 2:

Class : Class 7
PQ shows the time taken by the ice to melt into water. Here, the temperature is steady – at 0°C. QR shows the time taken by the melted water to heat up and reach boiling point. Here, the temperature rises to boiling point – from 0°C to 100°C. RS shows the time taken by the water to evaporate. Here again, the temperature is steady – at 100°C. Part PQ shows melting of ice.Hence, the right answer is Option A.

Ans 3:

Class : Class 6
thks ribirta

Ans 4:

Class : Class 6

Ans 5:

Class : Class 8
Yes, it will be option no. A.👍

Ans 6:

Class : Class 6

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Subject :NSO    Class : Class 1

Ans 1:

Class : Class 7
It's option A.

Ans 2:

Class : Class 1
Its A..Jaya only

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Subject :NSO    Class : Class 8

Ans 1:

Class : Class 10
Kindly give me the reasoning of the pattern.

Ans 2:

Class : Class 9
The answer is Option C that is 255 The difference from 3 to 7 is 4. The different from 7 to 15 is 8. The difference from 15 to 31 is 16. The difference from 31 to 63 is 32. The observation if 4 X 2 = 8, 8 X 2 = 16. Like wise, we can find next ones also. Only 5 are given and we have to find the 7th one. So, let is first find the 6th one. 32 X 2 = 64. So, 63 + 64 = 127. The 6th number is 127. Now, we have to find the 7th one. 64 X 2 = 128. 127 + 128 = 255. That is Option C

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Subject :NSO    Class : Class 4

Ans 1:

Class : Class 5
And the sixth triangle by mixing two bottom left side triangles.

Ans 2:

Class : Class 5
c - 6

Ans 3:

Class : Class 3
answer is 6

Ans 4:

Class : Class 5
D

Ans 5:

Class : Class 5
Sorry.Answer will be C because I can find the triangles on the top right side of the boat,second on the top left side of the boat,third and fourth triangles under the top left side triangle and fifth triangle under the bottom left side triangle.

Ans 6:

Class : Class 5
And the sixth triangle by mixing two bottom left side triangles.

Ans 7:

Class : Class 7

Ans 8:

Class : Class 5
And the sixth triangle by mixing two bottom left side triangles.

Ans 9:

Class : Class 4
B

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