National Science Olympiad Forum By SOF Olympiad Trainer - Page 486

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Subject :NSO    Class : Class 3

Ans 1:

Class : Class 6
B

Ans 2:

Class : Class 3
C

Ans 3:

Class : Class 3
D

Ans 4:

Class : Class 5
c

Ans 5:

Class : Class 8
answer is c

Ans 6:

Class : Class 4
nice question

Ans 7:

Class : Class 1
answer is c but it is saying b which is wrong

Ans 8:

Class : Class 3

Ans 9:

Class : Class 7

Ans 10:

Class : Class 4
answers to all the questions:::: 1 : B 2: B 3:A 4:D 5:B

Ans 11:

Class : Class 7
B first look which animals are connected to Bulbul with an arrow find their population then find population of other animals answer - B

Ans 12:

Class : Class 3
D - Because increase in plant also increases population of Caterpiler and Grasshopper, and decrease in snake may constant Bulbul population if plant did not increases.

Ans 13:

Class : Class 5
class: 3 this doesent make sense

Ans 14:

Class : Class 4
Wrong

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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 6
d

Ans 2:

Class : Class 10
Single pulley does not provide any mechanical advantage, it only changes the direction of force while an inclined plane provides mechanical advantage. This means the efforts required to life the same amount of load on an inclined plane is lesser than that by a single pulley. (Pulley provides mechanical advantage only if we use more than one pulley).Lesser the inclination more is mechanical advantage and lesser the effort. That means the correct answer should be 'D'

Ans 3:

Class : Class 9
B

Ans 4:

Class : Class 6
I agree with Ira not with Arnav because pulley does not lessen the effort.

Ans 5:

Class : Class 9
B

Ans 6:

Class : Class 5
B because if we use a rope to pull it will take a lot of effort, if we take a small or large inclined plane it will also take more effort because the load will slip down but in pulley we have to only pull the rope

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Subject :NSO    Class : Class 5

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Subject :NSO    Class : Class 8

Ans 1:

Class : Class 8
The answer is option c

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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 5
ans 1 i have got 5 times in level 2 and 9 times in level 1

Ans 2:

Class : Class 6

Ans 3:

Class : Class 3

Ans 4:

Class : Class 6
Of the three mediums, sound waves travel the slowest through gases, faster through liquids, and fastest through solids. Sound waves need a medium to pass through. Liquid molecules are not packed as tightly as solids, and gases are very loosely packed. The spacing of the molecules enables sound to travel much faster through a solid than a liquid or a gas. Sound travels about four times faster and farther in water than it does in air. That means the right answer is Option D.i am the smartest guy in sofi have got once international rank 1in level 2

Ans 5:

Class : Class 7

Ans 6:

Class : Class 6

Ans 7:

Class : Class 5

Ans 8:

Class : Class 5

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Subject :NSO    Class : Class 4

Ans 1:

Class : Class 5
the answer is a a a a a a a a!!!!!!!!!!!!

Ans 2:

Class : Class 9
Harsh , the answer is B not A

Ans 3:

Class : Class 4
anser ccccccccccccccccccccccccccccccccccccccccccccccccccccccc

Ans 4:

Class : Class 4
B

Ans 5:

Class : Class 8
option b is the correct answer

Ans 6:

Class : Class 5
B

Ans 7:

Class : Class 10
option B

Ans 8:

Class : Class 5
The correct Option is b

Ans 9:

Class : Class 6
B

Ans 10:

Class : Class 5
B

Ans 11:

Class : Class 4
a

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Subject :NSO    Class : Class 4

Ans 1:

Class : Class 5

Ans 2:

Class : Class 5
C

Ans 3:

Class : Class 7
c is the right option

Ans 4:

Class : Class 5

Ans 5:

Class : Class 5
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Ans 6:

Class : Class 7
The answer is option A

Ans 7:

Class : Class 4

Ans 8:

Class : Class 9
The answer is A .......

Ans 9:

Class : Class 10
option C

Ans 10:

Class : Class 5
Option c

Ans 11:

Class : Class 5
snowhite corrrect

Ans 12:

Class : Class 8
the answer is[ A]

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Subject :NSO    Class : Class 3

Ans 1:

Class : Class 3

Ans 2:

Class : Class 3

Ans 3:

Class : Class 5
question is incomplete

Ans 4:

Class : Class 3
question incomplete

Ans 5:

Class : Class 3
Question in complete

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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 10

Ans 2:

Class : Class 6
p should be pure water and q should be impure water so kindly correct the options

Ans 3:

Class : Class 10
dumb SOF

Ans 4:

Class : Class 1
Yes. Even I think that sof here has made a mistake . P and Q should be interchanged . I am reporting this as an error

Ans 5:

Class : Class 10

Ans 6:

Class : Class 8
Q should be water salt and P should be pure water

Ans 7:

Class : Class 6
yes you are right

Ans 8:

Class : Class 6
correct P and Q in the given picture

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Subject :NSO    Class : Class 8

Ans 1:

Class : Class 10
But gallium is in solid state at room temperature (20oC)

Ans 2:

Class : Class 8
gallium is solid before 29.73 so mention the tempereture

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