National Science Olympiad Forum By SOF Olympiad Trainer

User Forum

Subject :NSO    Class : Class 5

Ans 1:

Class : Class 5
The answer is D because the stapler is the odd one out

Ans 2:

Class : Class 6
What is type of Option A?

Ans 3:

Class : Class 5
yes because the stapler is a third class lever

Ans 4:

Class : Class 5

Ans 5:

Class : Class 5

Ans 6:

Class : Class 6
option D is correct because stapler is 3rd class lever

Ans 7:

Class : Class 6

Ans 8:

Class : Class 6
Stapler ( option D ) is the odd one out as it is a third class lever i.e. effort is between the load and fulcrum .

Post Your Answer

Subject :NSO    Class : Class 4

Ans 1:

Class : Class 3

Post Your Answer

Subject :NSO    Class : Class 8

Ans 1:

Class : Class 8

Ans 2:

Class : Class 8
A

Ans 3: (Master Answer)

Class : Class 1
The correct answer is A.

Post Your Answer

Subject :NSO    Class : Class 8

Ans 1:

Class : Class 8
ans : A

Ans 2:

Class : Class 8

Post Your Answer

Subject :NSO    Class : Class 3

Ans 1:

Class : Class 3
i m not getting the answer

Ans 2:

Class : Class 3
D

Post Your Answer

Subject :NSO    Class : Class 6

Ans 1:

Class : Class 5
Yes it should be t/10 as the pendulum will pass through point y twice in its one revolution...... so the the time period should be t/10

Ans 2:

Class : Class 8
it should be t/10 only as during time period the pendulum will pass through the point y twice.so the time period will be t/10

Ans 3:

Class : Class 6
It should be T/21 only as T is the total time and no of times it passes Y is 21.Therefore the answer is T/21

Ans 4:

Class : Class 8
it should be t/10 only as during time period the pendulum will pass through the point y twice.so the time period will be t/10

Ans 5:

Class : Class 6

Ans 6:

Class : Class 6
throughout the time period or the 21 swings the pendulum will pass through the point Y 21 times. so the answer is B(t/21)

Ans 7:

Class : Class 7

Ans 8:

Class : Class 4
yes I also agree with you

Ans 9:

Class : Class 7
I agree with you

Ans 10:

Class : Class 6

Ans 11:

Class : Class 8
it should be t/10 only as during time period the pendulum will pass through the point y twice.so the time period will be t/10

Post Your Answer

Subject :NSO    Class : Class 6

Ans 1:

Class : Class 6
NA

Ans 2:

Class : Class 6
gas to solid is deposition and opposite is sublimation ans wrong

Ans 3:

Class : Class 6
How in processes v condensation came?

Ans 4:

Class : Class 7
The answer can be B and D both.

Ans 5:

Class : Class 6
I also agree with all of you . That's just impossible, I guess.

Ans 6:

Class : Class 6
I do agree with Bhabani prasad

Ans 7:

Class : Class 6
I ALSO AGREE WITH YOU ALL

Ans 8:

Class : Class 6
We can express process v as deposition and how did condensation and freezing get involved

Post Your Answer

Subject :NSO    Class : Class 5

Shred a paper in tiny pieces. Take a comb and comb your hair. Now bring the comb closer to the paper pieces. What will you observe?

A The paper pieces will get repelled due to magnetic force.
B The paper pieces will get repelled due to electrostatic force.
C The paper pieces will get attracted and stick to the comb due to electrostatic force.
D The pieces will get attracted and stick to the comb due to frictional force.


Ans 1:

Class : Class 4
I prefer option C

Ans 2:

Class : Class 5
yup

Ans 3:

Class : Class 8
The correct ans is option C because electrostatic force is a non contact force which is similar to magnetic force and the comb is like a magnet and tin pieces of paper are like the metal here (So the comb will attract the tiny pieces of paper).

Ans 4:

Class : Class 5
The answer is C

Ans 5:

Class : Class 5
C

Post Your Answer

Subject :NSO    Class : Class 5

Ans 1:

Class : Class 5
this question makes no sense . 6 legs-can be an insect , eye on his forehead???

Ans 2:

Class : Class 3
Mammals do not have 3 eyes

Ans 3:

Class : Class 3
Mammals do not have 3 eyes

Ans 4:

Class : Class 5
Is cow have 6 legs and 1 eye on its forehead

Ans 5:

Class : Class 4

Ans 6:

Class :
Ans is D

Ans 7:

Class : Class 6
The answer is D.

Ans 8:

Class : Class 5
The answer is D. Hair on skin and breast feeding the young ones are characteristic of mammals such as cow. So, if really existed, this animal would have been placed with cow.

Ans 9:

Class : Class 6
mammals do not have 6 legs and has more han 1 eye!

Ans 10:

Class : Class 9

Ans 11:

Class : Class 8
If the animal really existed it would have belonged to the same group as cow.

Ans 12:

Class : Class 4
If this animal really existed it would have to be a monster that would eat us

Ans 13:

Class : Class 4

Ans 14:

Class : Class 5
forehead? hahahahahahahahah

Ans 15:

Class : Class 5
Yes but in the question it said that the animal was imanginative can't believe what type of an animal it was.

Ans 16:

Class : Class 5
The answer is D

Ans 17:

Class : Class 5
It can't be D as they do not have six legs. no option is correct. I will report error for it is NOOT D

Ans 18:

Class : Class 5
ans is DBECAUSE IT IS A IMAGINARY ANIMAL

Ans 19:

Class : Class 5
As this question is already wrong a mammal can not have 6 legs.

Post Your Answer

Subject :NSO    Class : Class 5

Ans 1:

Class : Class 5
answer is c sof is wrong

Ans 2:

Class : Class 4
In the solutions it is showing C as correct option but in front It is showing B as the answer to this question. please correct the answer.

Ans 3:

Class : Class 5
how is it B!?

Ans 4:

Class : Class 6
WHY YOU TYPE SO MANY C Ishaan

Ans 5:

Class : Class 7
2 should be opaque and 1 transparent, or both opaque

Ans 6:

Class : Class 5
correct ans is C

Ans 7:

Class : Class 6
IF SOF CAN EXPLAIN THIS CORRECTLY, THEN I WILL STOP DOING PRACTICE OF ANY OLYMPIAD

Ans 8:

Class : Class 5
I could not find any logic in this answer. Can anyone explain it? THANS FOR READING!!!

Ans 9:

Class : Class 4
The solution itself explains that c is the correct ans. So that means m2 is opaque and m1 is transparent. Please someone correct this ans

Ans 10:

Class : Class 6
Blunders made by SOF. PLEASE FIX THIS !!!!!

Ans 11:

Class : Class 6
The answer should be C. But answer is given B which is impossible.

Ans 12:

Class : Class 5
cccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccc

Ans 13:

Class : Class 5
ANSWER WILL BE 'C ' CAUSE THROUGH TRANSPARENT MATERIAL WE CANNOT SEE SHADOW OF A THING BUT THROUGH OPAQUE MATERIAL WE CAN SEE A THING'S SHADOW

Ans 14:

Class : Class 4
ans should be c!!! I am reporting an error

Ans 15:

Class : Class 4
and should be C and i did C cut now it is showing that i have done B!!

Ans 16:

Class : Class 6
CORRECT ANSWER SHOULD BE C

Ans 17:

Class : Class 6
Ans is c as you see light can't pass through material 2 and can pass through material 1. According to SOF ans b which mean light can pass through cardboard and can't through clear pastic sheet!!!!!. Please correct this SOF or it can be a typing mistake. Thanks for reading.

Ans 18:

Class : Class 5
never use sof trainer they know nothing

Ans 19:

Class : Class 5

Ans 20:

Class : Class 6
the answer is c 'cause material 1 is transparent and material 2 is opaque. The solution also says c. Typing error. Thanks for reading

Ans 21:

Class : Class 6
The sol says ans is C but it correct ans is B.

Ans 22:

Class : Class 7

Ans 23:

Class : Class 6
It explains c is the correct ans but on the front it says b. Someone please correct this. They cut my marks also.

Post Your Answer