National Science Olympiad Forum By SOF Olympiad Trainer - Page 655

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Subject :NSO    Class : Class 4

Ans 1:

Class : Class 5
Planet D is Uranus which is mostly rocky and icy. I do not understand why it is not A and D. someone please clarify.

Ans 2:

Class : Class 8
You're right!!!!!LAVANYA...

Ans 3:

Class : Class 6
The answer should be A. I understand what you are saying but look they told that the planets C and D are gases. They did not asked how big they are but they asked are they made up of gases. So the answer should be A since C is the largest.

Ans 4:

Class : Class 4

Ans 5:

Class : Class 5
Sorry for the misconception , the answer is d

Ans 6:

Class : Class 5
The planet c is Jupiter the Largest and in a option it is given 2nd largest so it is incorrect but in c option it is written that a and b are made up rocks and it is also incorrect . So the answer should be a and c both .please update the question

Ans 7:

Class : Class 6

Ans 8:

Class : Class 4
I didn't understand that d is Uranus and it's called the ice giant then why option d is saying that c and d are made up of gases. as per my understanding two options are incorrect, A and D.

Ans 9:

Class : Class 5
'c' is jupiter which is the biggest the answer is 'd' . Saturn is the second biggest planet . if they were asking about the biggest heavenly body in our solar system then options 'a' and 'd' would have been correct as the sun is the biggest heavenly body in our solar system and Jupiter is second

Ans 10:

Class : Class 8

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Subject :NSO    Class : Class 5

Mr. Gupta was walking along a street at night. He stood at point D and observed that his shadow was cast behind him. He then noticed that the length of his shadow changed as he walked towards the street lamp.

Which one of the following graphs shows the correct changes in the length of the shadow as Mr. Gupta walked from Point D to Point F?

A
B
C
D


B is the wrong answer. Shouldn't the actual answer be A, as the closer the object is to the light source, more area is blocked and the shadow is bigger?

Ans 1:

Class : Class 5

Ans 2:

Class : Class 7
When walking towards light shadow decreases.

Ans 3:

Class : Class 9

Ans 4:

Class : Class 9

Ans 5:

Class : Class 5

Ans 6:

Class : Class 9
Can you please explain

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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 9
Thanks for supporting B everyone Ummm..... Whoever u guys are : ) !!

Ans 2:

Class : Class 7
the question which of the following CANNOT spread through the mode ................................ given figure

Ans 3:

Class : Class 5

Ans 4:

Class : Class 8
B SHOULD BE THE ANSWER

Ans 5:

Class : Class 9
B is the ANSWER!!!!!!!!! 😡 🤬

Ans 6:

Class : Class 5
it is written as cannot spread so C is the correct answer or b would be the correct answer

Ans 7:

Class : Class 9
B is the ANSWER!!!!!!!!

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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 5

Ans 2:

Class : Class 9

Ans 3:

Class : Class 9

Ans 4:

Class : Class 8
confusing all right

Ans 5:

Class : Class 7
can any one explane this

Ans 6:

Class : Class 4

Ans 7:

Class : Class 4
sum of all numbers x 4 = the middle number

Ans 8:

Class : Class 10

Ans 9:

Class : Class 8
Add all side numbers and then see what its a multiple of .For this one must know table of 18 by heart. Then rest is all simple .

Ans 10:

Class : Class 9

Ans 11:

Class : Class 9

Ans 12:

Class : Class 9
Ans is c

Ans 13:

Class : Class 9

Ans 14:

Class : Class 8
hmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmm

Ans 15:

Class : Class 9

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Subject :NSO    Class : Class 4

Ans 1:

Class : Class 8
the answer is b

Ans 2:

Class : Class 8
the correct answer should be both c and d

Ans 3:

Class : Class 6
can someone explain this question

Ans 4:

Class : Class 6
can some one explain

Ans 5:

Class : Class 9

Ans 6:

Class : Class 4

Ans 7:

Class : Class 10
maybe the answer is d

Ans 8:

Class : Class 4
THE ANSWER IS D BECAUSE IN POSITION 4 THE NOTHERN HEMISPHERE IS GETTING DIRECT SUNLIGHT WHEREAS THE SOUTHERN HEMISHERE CANNOT. IT CANNOT BE C AS THE SUN`S LIGHT CAN STILL REACH THE SOUTHERN HEMISPHERE.

Ans 9:

Class : Class 7
Answer c is correct.

Ans 10:

Class : Class 6
ans should be c

Ans 11:

Class : Class 7

Ans 12:

Class : Class 6
I think the answer will be C

Ans 13:

Class : Class 8

Ans 14:

Class : Class 9
answer should be c and d the engine is wrong

Ans 15:

Class : Class 4
My answer is c. In position 3 northern hemisphere is exposed to the sun.

Ans 16:

Class : Class 6
thank u

Ans 17:

Class : Class 6

Ans 18:

Class : Class 8
the correct answer should be C

Ans 19:

Class : Class 4
the answer should be c.

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Subject :NSO    Class : Class 6

Two bar magnets suspended by string, are separated by a piece of metal. Which of the following statements best explain the outcome shown in the diagram?


A Only like poles attract.
B The magnets have lost their magnetic forces.
C The metal exerts a magnetic field which attracts the magnets.
D The magnetic field of the magnets cannot pass through the metal.


If the magnetic field can't pass through the metal why are the magnets attached to the metal

Ans 1:

Class : Class 6
The correct answer is c, not d lost a frikin mark

Ans 2:

Class : Class 6
1st a fall the solution is wrong .By any chance (if it could be0.000000000000000000000000001)so how striking process is working . It passes magnetic field. how sus

Ans 3:

Class : Class 1
Ans. is option C because magnets are attracting the metal piece. They are not attracting each other. SOF Olympiad Trainer, you need to solve this

Ans 4:

Class : Class 6
Basically it’s c because you see the magnets are clearly attracting

Ans 5:

Class : Class 6
correct answer=c

Ans 6:

Class : Class 8
ya clearly the magnets are getting attracted to the metal it should be option C.

Ans 7:

Class : Class 6
metals are ferrous so they redirect

Ans 8:

Class : Class 8
The metal is a magnetic material and like poles repel each other, so there is no conclusion about magnetic field passing through the metal

Ans 9:

Class : Class 6

Ans 10:

Class : Class 8
*NO CLEAR EXPLANATION IS GIVEN

Ans 11:

Class : Class 8

Ans 12:

Class : Class 4

Ans 13:

Class : Class 7
Correct answer will be option no. C why it's written option no. D?

Ans 14:

Class : Class 8
C is correct. Not D. SOF WHY IN THE WORLD WHY ON EARTH YOU MAKE SUCH MISTAKES? THAT TOO NO EXPLANATION GIVEN

Ans 15:

Class : Class 6
c is correct since the two magnets seem to be moving to the metal by the angle of the suspension string in the diagram. That means the partition is soft metal

Ans 16:

Class : Class 9
the correct answer is not d......................... their mistake they always make such kind of mistakes

Ans 17:

Class : Class 10
magnetic field can pass through metal. but her is such condition where metal is magnetic so it attract both magnet

Ans 18:

Class : Class 8
The correct answer is C not D........ their mistake ..... you need to solve

Ans 19:

Class : Class 8

Ans 20:

Class : Class 6
mukli

Ans 21:

Class : Class 6
yes it should be c as the metal bar is attracting the two magnetic bars.

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Subject :NSO    Class : Class 1

Ans 1: (Master Answer)

Class : Class 1
The correct answer is B.

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Subject :NSO    Class : Class 8

Ans 1:

Class : Class 6
How it should be option a

Ans 2:

Class : Class 10
It should be A

Ans 3:

Class : Class 8
I don't think it could be 'C' since uniform motion generally shows a straight line. Could be 'A'

Ans 4:

Class : Class 8

Ans 5:

Class : Class 5
answer should be A not C

Ans 6: (Master Answer)

Class : Class 1
The correct answer is C.

Ans 7:

Class : Class 6
It should be A not C.

Ans 8:

Class : Class 8
It should be A as uniform motion is a single straight line, here there are 3 discrete lines with different slopes. Clearly, the velocity changes at the bold points on the graph, making this non-uniform motion.

Ans 9:

Class : Class 8
a is right

Ans 10:

Class : Class 9
IT SHOULD BE A

Ans 11:

Class : Class 9
its not a straight line...thus answer SHOULD be A and not C

Ans 12:

Class : Class 10
Shouldn't the answer be option A instead of C as it is clearly not a straight line?

Ans 13:

Class : Class 8
In my opinion, the answer to this question should by option (A), not option (C). The line is not straight, so it should be non-uniform motion, as a distance-time graph of a body moving in uniform motion should have a straight line.

Ans 14:

Class : Class 9

Ans 15:

Class : Class 10
C

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Subject :NSO    Class : Class 8

Ans 1: