National Science Olympiad Forum By SOF Olympiad Trainer - Page 655

User Forum

Subject :NSO    Class : Class 6

Ans 1:

Class : Class 6
BUT HOW WILL IT GLOW IF S1 IS NOT CONNECTED??

Ans 2:

Class : Class 6
The answer is (B) because there are no switches in the ire that are being connected to bulb Y. Hence, bulb Y can glow but bulb X can't because S1 is not closed.

Ans 3:

Class : Class 8
But it will still remain as an open circuit... there may not be continuous flow of electricity 🤷‍♀️

Ans 4:

Class : Class 8
Bulb Y will still continue to glow if both the switches are open because bulb Y is directly connected to the battery and both of its terminals are connected to the battery. The answer to the given question is option b.

Ans 5:

Class : Class 9

Ans 6:

Class : Class 7
but s1 is closed so then the current can come to x too. no?

Ans 7:

Class : Class 10

Post Your Answer

Subject :NSO    Class : Class 6

Observe the given processes 1 and 2 carefully.

Which of the following statements are correct?
I. Bubbles are formed in process 1 while no bubble formation takes place in process 2.
II. Process 1 is slow while process 2 is fast.
III. Process 1 occurs at 100°C only while process 2 can occur at any temperature.

A I and II only
B II and III only
C I and III only
D All of these.


Being in a larger vessel, boiling of water in pan 1 should happen slower.

Ans 1:

Class : Class 1
Shourya Ganesh posted that he is the fool only pls see the name on the top. but actually he is the fool

Ans 2:

Class : Class 7
You all are only fools except Shourya because boiling( Process 1) is fast and evaporation( Process 2) is slow!!! Please use some common sense and logic

Ans 3:

Class : Class 7
Shourya is also a fool!! First he posted c as the answer which is actually correct and he is posting a which is wrong answer

Ans 4:

Class : Class 9
Answer should be (a). (Shourya Ganesh is a fool.)

Ans 5:

Class : Class 9
YES !!!! SHOURYA GANESH IS A FOOLISH AND MAD FELLOW!!!!!

Ans 6:

Class : Class 8
YES HE IS ACTUALLY A FOOL

Ans 7:

Class : Class 9
Answer should be c

Ans 8:

Class : Class 7
Only foolish Shourya not anyone else is foolish

Post Your Answer

Subject :NSO    Class : Class 4

Ans 1:

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 2:

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 3:

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 4:

Class : Class 6

Ans 5:

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 6:

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

Ans 7:

Class : Class 8

Ans 8:

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

Ans 9:

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 10:

Class : Class 4

Post Your Answer

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 9
Can you please explain

Ans 2:

Class : Class 5

Ans 3:

Class : Class 9

Ans 4:

Class : Class 9

Ans 5:

Class : Class 7
When walking towards light shadow decreases.

Ans 6:

Class : Class 5

Post Your Answer

Subject :NSO    Class : Class 5

Ans 1:

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

Ans 2:

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

Ans 3:

Class : Class 8
B SHOULD BE THE ANSWER

Ans 4:

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

Ans 5:

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

Ans 6:

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

Ans 7:

Class : Class 5

Post Your Answer

Subject :NSO    Class : Class 5

Ans 1:

Class : Class 9

Ans 2:

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

Ans 3:

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 4:

Class : Class 5

Ans 5:

Class : Class 9

Ans 6:

Class : Class 4

Ans 7:

Class : Class 8
hmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmm

Ans 8:

Class : Class 9
Ans is c

Ans 9:

Class : Class 9

Ans 10:

Class : Class 9

Ans 11:

Class : Class 10

Ans 12:

Class : Class 9

Ans 13:

Class : Class 8
confusing all right

Ans 14:

Class : Class 9

Ans 15:

Class : Class 7
can any one explane this

Post Your Answer

Subject :NSO    Class : Class 4

Ans 1:

Class : Class 6
ans should be c

Ans 2:

Class : Class 7
Answer c is correct.

Ans 3:

Class : Class 6
I think the answer will be C

Ans 4:

Class : Class 6
thank u

Ans 5:

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

Ans 6:

Class : Class 9

Ans 7:

Class : Class 6
can some one explain

Ans 8:

Class : Class 4
the answer should be c.

Ans 9:

Class : Class 7

Ans 10:

Class : Class 10
maybe the answer is d

Ans 11:

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 12:

Class : Class 6
can someone explain this question

Ans 13:

Class : Class 4

Ans 14:

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

Ans 15:

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

Ans 16:

Class : Class 8

Ans 17:

Class : Class 6

Ans 18:

Class : Class 8
the answer is b

Ans 19:

Class : Class 8
the correct answer should be C

Post Your Answer

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 8

Ans 2:

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

Ans 3:

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

Ans 4:

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 5:

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

Ans 6:

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 7:

Class : Class 6
correct answer=c

Ans 8:

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

Ans 9:

Class : Class 8
*NO CLEAR EXPLANATION IS GIVEN

Ans 10:

Class : Class 8

Ans 11:

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

Ans 12:

Class : Class 4

Ans 13:

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 14:

Class : Class 6

Ans 15:

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 16:

Class : Class 6
mukli

Ans 17:

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

Ans 18:

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

Ans 19:

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 20:

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

Ans 21:

Class : Class 6
metals are ferrous so they redirect

Post Your Answer

Subject :NSO    Class : Class 1

Ans 1: (Master Answer)

Class : Class 1
The correct answer is B.

Post Your Answer

Subject :NSO    Class : Class 8

Ans 1:

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 2: (Master Answer)

Class : Class 1
The correct answer is C.

Ans 3:

Class : Class 5
answer should be A not C

Ans 4:

Class : Class 8

Ans 5:

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

Ans 6:

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 7:

Class : Class 10
C

Ans 8:

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

Ans 9:

Class : Class 10
It should be A

Ans 10:

Class : Class 6
It should be A not C.

Ans 11:

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

Ans 12:

Class : Class 6
How it should be option a

Ans 13:

Class : Class 8
a is right

Ans 14:

Class : Class 9

Ans 15:

Class : Class 9
IT SHOULD BE A

Post Your Answer