National Science Olympiad Forum By SOF Olympiad Trainer - Page 654

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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 7

Ans 2:

Class : Class 5
Yes option d is correct

Ans 3:

Class : Class 6
What is type of Option A?

Ans 4:

Class : Class 7
The answer is D because the stapler is the odd one out

Ans 5:

Class : Class 5

Ans 6:

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

Ans 7:

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

Ans 8:

Class : Class 7
Stapler ( option D ) is the odd one out as it is a third class lever i.e. effort is between the load and fulcrum .

Ans 9:

Class : Class 3
D

Ans 10:

Class : Class 6
according to Google stapler is a third-class lever

Ans 11:

Class : Class 9

Ans 12:

Class : Class 10

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Subject :NSO    Class : Class 4

Ans 1:

Class : Class 5
I was thinking about body building food

Ans 2:

Class : Class 3

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Subject :NSO    Class : Class 8

Ans 1:

Class : Class 8
A

Ans 2: (Master Answer)

Class : Class 1
The correct answer is A.

Ans 3:

Class : Class 10
it is A as fertilizers are soluble in water. You might have heard that fertilizers flow into the river and cause eutrophication it flows into river because it is soluble in water

Ans 4:

Class : Class 9
The correct answer is B because manure is soluble in water but it is absorbed very slowly

Ans 5:

Class : Class 8
A

Ans 6:

Class : Class 8

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Subject :NSO    Class : Class 8

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Subject :NSO    Class : Class 3

Ans 1:

Class : Class 8
D

Ans 2:

Class : Class 3
i m not getting the answer

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Subject :NSO    Class : Class 6

Ans 1:

Class : Class 7
hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhheeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeelllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllloooooooooooooooooooooooooooooooooooooooooooooo

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 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 4:

Class : Class 9
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 5:

Class : Class 8
Hi The Answer is T/10Sub To my YT:SkyPeRtan Wolf

Ans 6:

Class : Class 8
Here, in this example, the pendulum passes through y 21 times. So, it will do 10 complete oscillations and 1 half which is basically touching y. Therefore, the time period of the pendulum is T/10.

Ans 7:

Class : Class 3
The answer is right - it should be T/10

Ans 8:

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 9:

Class : Class 4
yes I also agree with you

Ans 10:

Class : Class 7
I agree with you

Ans 11:

Class : Class 6
it should be t/21

Ans 12:

Class : Class 6

Ans 13:

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 14:

Class : Class 10
smsmsmsmsmmmsmsmsmsmsmsmsmsmsmfjjjjjjjjjjfjjfjfjfjfjfffffffffffffffyhhhhhhhhhhhhhhhhhhhhhhhhhhhhyhhhhhhhhhhyyyyyyyyyyyyyyyyujjjjjjjjjjjjjjjjikkkkkkkkkkkkkkkkkkkkkkkloooooooooooooooyhhhhhhhhhhhhhhhhbggggggggggggggghndcccccccccccccccccccchndcccccccccccccccccccccccccccedhyncccccccccccccccccccccccccccccccccccccccccccccccccccccchynedcccccccccccccccccccccccccchdenyccccccccccccedyhncccccccccccccccccccccccyyyyyyyyyyyyyyyyyyyyyyyyyyyyyydheycnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnn

Ans 15:

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 16:

Class : Class 8

Ans 17:

Class : Class 9

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Subject :NSO    Class : Class 6

Ans 1:

Class : Class 2

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 9
In process v, actually sublimation takes place

Ans 5:

Class : Class 7
ya

Ans 6:

Class : Class 7
I also agree with all of you . That's just impossible, I guess.

Ans 7:

Class : Class 7
it is a direct change, so it does have to turn into liquid state

Ans 8:

Class : Class 7

Ans 9:

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

Ans 10:

Class : Class 2

Ans 11:

Class : Class 6
The answer is not B

Ans 12:

Class : Class 6
I do agree with Bhabani prasad

Ans 13:

Class : Class 9
Answer is B because to turn Water vapour into ice you need Deposition but water vapour cannot be deposited that is why you first need to turn the water vapour to water by condensation and then to convert water to ice you need freezing . Hence answer B is correct

Ans 14:

Class : Class 7
NA

Ans 15:

Class : Class 8
I ALSO AGREE WITH YOU ALL

Ans 16:

Class : Class 7
Guys you are wrong process name is deposition but you need to cool it to water then freeze it

Ans 17:

Class : Class 7
easy

Ans 18:

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

Ans 19:

Class : Class 7
easyyyyyyyyy

Ans 20:

Class : Class 7
same

Ans 21:

Class : Class 6

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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 7

Ans 2:

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 3:

Class : Class 6
it can also be said as static electricity

Ans 4:

Class : Class 5
The answer is C

Ans 5:

Class : Class 6
6536e6w33346si7s7474r6ssxfge65eueskibidyohio fanomtax rizzler

Ans 6:

Class : Class 8
The answer is C

Ans 7:

Class : Class 5
Class :C

Ans 8:

Class : Class 7
I prefer option C

Ans 9:

Class : Class 5
C

Ans 10:

Class : Class 7
yup

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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 8
this question makes no sense . 6 legs-can be an insect , eye on his forehead???

Ans 2:

Class : Class 8
Mammals do not have 3 eyes

Ans 3:

Class : Class 2

Ans 4:

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

Ans 5:

Class : Class 4

Ans 6:

Class : Class 7
As this question is already wrong a mammal can not have 6 legs.

Ans 7:

Class : Class 8
Is cow have 6 legs and 1 eye on its forehead

Ans 8:

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 9:

Class : Class 7
This is impossible because a cow has four legs not 6 legs and also it has two eyes not one eye and those two eyes are not on the forehead

Ans 10:

Class : Class 9
ydejkcdhbjxdjkdajkdsjhdasjhdajhsadhjdaj

Ans 11:

Class : Class 6
The answer is D.

Ans 12:

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

Ans 13:

Class : Class 5
Ans D ( Cow)

Ans 14:

Class : Class 5
Firstly , mammals do not have three eyes, secondly which mammal has six legs ???????????

Ans 15:

Class : Class 9
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 16:

Class : Class 7
Idiots, the monster fed milk to its young, a feature seen only in Mammals

Ans 17:

Class :
Ans is D

Ans 18:

Class : Class 4

Ans 19:

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 20:

Class : Class 5
The answer is D

Ans 21:

Class : Class 9

Ans 22:

Class : Class 9
All report an error they give all wrong only

Ans 23:

Class : Class 8
Mammals do not have 3 eyes

Ans 24:

Class : Class 5
I thought this could be an insect as it HAS SIX LEGS. And some spiders( I know they are not insects ) have more than two eyes so it could be possible that the correct answer is b. But it has fur and is feeding its young one milk so the answer should be d

Ans 25:

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

Ans 26:

Class : Class 4
how can we tell what group is that animal if that doesn't exist

Ans 27:

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

Ans 28:

Class : Class 5
I can say that they have fur but they don't have 6 legs and 1 eye on the forehead

Ans 29:

Class : Class 5
forehead? hahahahahahahahah

Ans 30:

Class : Class 7
IDIOTS just listen to them or maybe they are wrong

Ans 31:

Class : Class 7
This is impossible cow only as four legs and two eyes and those two are not on the forehead

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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 5
There must be a technical issue because when I read the solution, it was written that the correct answer is C.

Ans 2:

Class : Class 6
never use sof trainer they know nothing

Ans 3:

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 4:

Class : Class 10
IF SOF CAN EXPLAIN THIS CORRECTLY, THEN I WILL STOP DOING PRACTICE OF ANY OLYMPIAD

Ans 5:

Class : Class 9
how is it B!?

Ans 6:

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

Ans 7:

Class : Class 5
correct ans is C

Ans 8:

Class : Class 8
WHY YOU TYPE SO MANY C Ishaan

Ans 9:

Class : Class 9
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 10:

Class : Class 5
CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC

Ans 11:

Class : Class 8
The answer should be C. But answer is given B which is impossible.

Ans 12:

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

Ans 13:

Class : Class 6
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Ans 14:

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

Ans 15:

Class : Class 7
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 16:

Class : Class 6
The guys who solved the paper and created this test was in hurry. So he did not take efforts to review his answers, hence many answers are wrong here. How will students trust on these guys?

Ans 17:

Class : Class 2

Ans 18:

Class : Class 5
howwwwwwww ccccccccccc

Ans 19:

Class : Class 8
ans should be c!!! I am reporting an error

Ans 20:

Class : Class 5
answer is c sof is wrong

Ans 21:

Class : Class 7
The ans should be C.

Ans 22:

Class : Class 8
It explains c is the correct ans but on the front it says b. Someone please correct this. They cut my marks also.

Ans 23:

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

Ans 24:

Class : Class 8
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 25:

Class : Class 5
how is it b

Ans 26:

Class : Class 10
CORRECT ANSWER SHOULD BE C

Ans 27:

Class : Class 10
2 should be opaque and 1 transparent, or both opaque

Ans 28:

Class : Class 8
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 29:

Class : Class 4

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