National Science Olympiad Forum By SOF Olympiad Trainer

User Forum

Subject :NSO    Class : Class 3

Ans 1:

Class : Class 3
Spinal cord sometimes acts as brain

Ans 2:

Class : Class 5
without brain's indicator how nerves will pull hands?

Ans 3:

Class : Class 3
The hand can't move without the signals of brain

Ans 4:

Class : Class 3
What about Brain?

Ans 5:

Class : Class 4
without brain how will we move

Ans 6:

Class : Class 4
it will be none of the above because there is no brain

Ans 7:

Class : Class 5
yeeeeeeeeeeeessssssssssss!!!!!!!!!!!!!

Ans 8:

Class : Class 5
how will the other parts get signal ?

Ans 9:

Class : Class 3
OH,Nooooooooooooooooooooooooooooooooooooooooooooooooooooooooo|

Ans 10:

Class : Class 5
B - Skin → Nerves → Spinal cord → Nerves → Hand is pulled back

Ans 11:

Class : Class 5

Ans 12:

Class : Class 4
skin ,nerves ,spinal cord ,brain,Spinal cord, Nerves, Hand is pulled back

Ans 13:

Class : Class 2
without brain there would be no reflex. Spinal cord is just a carrier through neurons..it's the brain which signals to pull back the hand from a hot kettle...not any other organs.

Ans 14:

Class : Class 4
Where is brain

Ans 15:

Class : Class 3
It can never be like that.

Ans 16:

Class : Class 5
the brain should be there

Ans 17:

Class : Class 3
The option 'B' is the correct answer.

Ans 18:

Class : Class 4
The answer B is correct because the Spinal Cord controls the Reflex Actions and if we touch a hot kettle and move our hand back, its a Reflex Action of course!!!

Ans 19:

Class : Class 3
The option 'B' is the correct answer.

Post Your Answer

Subject :NSO    Class : Class 5

Ans 1:

Class : Class 5
asteroids have a highly elliptical orbit unlike planets. planets have round orbits.

Ans 2:

Class : Class 4
Asteroids are small, irregular lumps of rock that move in orbits around the Sun. Most asteroids lie in a vast ring between the orbits of Mars and Jupiter. This is called asteroid belt that holds millions of asteroids. Asteroids can be classified into two broad groups based on their composition and location-carbon rich asteroids dominate the outer part of asteroid belt whereas metal rich asteroids dominate the inner part of belt.

Ans 3:

Class : Class 7
Option C is the correct answer

Ans 4:

Class : Class 5
Option C and A are both correct

Post Your Answer

Subject :NSO    Class : Class 5

Ans 1:

Class : Class 4
Orion Orion Orion Orion Orion Orion!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Ans 2:

Class : Class 5
it is Orion luckily i did not see the option letter is wrong and clicked option D

Ans 3:

Class : Class 6
the answer is orion but in laptop cassiopeia and orion are c so i clicked c but my answer is wrong

Ans 4:

Class : Class 5
the answer is Orion but in laptop Cassiopeia and Orion are c so i clicked c but my answer is wrong. Same thing happened to me

Ans 5:

Class : Class 6
orionit must have been a mistake to write c on both.

Ans 6:

Class : Class 5
with my luck ,i did D

Ans 7:

Class : Class 5
part c

Ans 8:

Class : Class 7
Orion

Ans 9:

Class : Class 5

Ans 10:

Class : Class 5

Ans 11:

Class : Class 5
Yes, the correct answer is Orion as Ursa Major, Ursa Minor and Cassiopeia are different in my iPads net. Don't worry I also got worried seeing the net but to me Orion is the right answer. Thank you.

Ans 12:

Class : Class 5
orion

Ans 13:

Class : Class 4
ORION IS THE ANSWER TO THIS QUESTION

Ans 14:

Class : Class 5
It is Orion but it is showing c

Ans 15:

Class : Class 5
YES, it is indeed Orion the Great. Wrong answer was put in the system , but now it is corrected.

Ans 16:

Class : Class 5
YES THE ANSWER IS ORION

Ans 17:

Class : Class 7
YES,IT ISORION,THE GREAT

Ans 18:

Class : Class 5
I clicked d because Orion was the last but when the result came it was showing it wrong and it was marked like this your answer D correct answer D and it was showing wrong for me

Ans 19:

Class : Class 5
click d they have done mistake

Ans 20:

Class : Class 4

Ans 21:

Class : Class 5

Ans 22:

Class : Class 6
Orion

Post Your Answer

Subject :NSO    Class : Class 5

Ans 1:

Class : Class 7

Ans 2:

Class : Class 1

Ans 3:

Class : Class 5
B

Ans 4:

Class : Class 4
B

Ans 5:

Class : Class 5
B

Ans 6:

Class : Class 5
B is the answer

Ans 7:

Class : Class 5
(b) Planet Venus is the hottest planet in our solar system

Post Your Answer

Subject :NSO    Class : Class 5

Ans 1:

Class : Class 4
Yes Fareeha siddiqua the answer is D

Ans 2:

Class : Class 5
a

Ans 3:

Class : Class 5

Ans 4:

Class : Class 5
Venus and uranus rotate in clock wise direction but uranus is a gaseous planet so answer is D

Ans 5:

Class : Class 5

Ans 6:

Class : Class 5

Post Your Answer

Subject :NSO    Class : Class 6

Ans 1:

Class : Class 8
what is gggggggggg you are mad?

Post Your Answer

Subject :NSO    Class : Class 6

Ans 1:

Class : Class 8
you are fully mad ? 555

Post Your Answer

Subject :NSO    Class : Class 5

Ans 1:

Class : Class 6
how is it mechanical force?

Ans 2:

Class : Class 5
It is frictional force

Ans 3:

Class : Class 7
mechanical

Ans 4:

Class : Class 3
c is correct

Ans 5:

Class : Class 6
Mechanical Force

Ans 6: (Master Answer)

Class : Class 1
Mechanical Force.

Ans 7:

Class : Class 5
How is it mechanical? Please explain

Ans 8:

Class : Class 6

Ans 9:

Class : Class 7
mechanical

Ans 10:

Class : Class 5
It is mechanical

Ans 11:

Class : Class 5
how???

Ans 12:

Class : Class 7
how is it mechanical?

Ans 13:

Class : Class 4
It is option C

Ans 14:

Class : Class 5

Ans 15:

Class : Class 6
How the answer is D . Mechanical force

Ans 16:

Class : Class 5
Mechanical force

Ans 17:

Class : Class 5

Ans 18:

Class : Class 4
answer D

Ans 19:

Class : Class 5
how???????????????????????????????????????????????????????????????????????????is mechanical?????????????????????????????????????????????????????????????????

Ans 20:

Class : Class 6
Can somebody explain why it is mechanical force ????

Ans 21:

Class : Class 7
mechanical

Ans 22:

Class : Class 5
the corect answer is C

Ans 23:

Class : Class 5
Mechanical force is the only correct answer .

Ans 24:

Class : Class 7

Ans 25:

Class : Class 5
how?

Ans 26:

Class : Class 5

Post Your Answer

Subject :NSO    Class : Class 4

Ans 1: (Master Answer)

Class : Class 1
The correct answer is D.

Post Your Answer

Subject :NSO    Class : Class 5

The given graph shows the changes in the population of an insect found on a Jackfruit tree after four different sprayings of the same insecticide.

What conclusion can you draw from the graph?

A The insecticide had no effect on the insects at all.
B The insect population had become resistant to the insecticide.
C The insect population increased as the wrong type of insecticide was used.
D The insecticide helped to reduce the number of insects permanently.


Ans 1:

Class : Class 4
b

Ans 2:

Class : Class 5
It is C because after the guy used the 3rd and 4th pesticide the insects started increasing

Ans 3:

Class : Class 3
If b is the answer then why is the bar graph increasing day by day.😠

Ans 4:

Class : Class 5
wrong

Ans 5:

Class : Class 6
I think the right answer should be C as when the 3rd spray was conducted the pest started to increase hence right answer answer is CThank you for appreciating me

Ans 6:

Class : Class 5

Ans 7:

Class : Class 5
Wrong answer given by SOF !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Ans 8: