National Science Olympiad Forum By SOF Olympiad Trainer - Page 648

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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 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 2:

Class : Class 6

Ans 3:

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

Ans 4:

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 5:

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 6:

Class : Class 7
I agree with you

Ans 7:

Class : Class 8

Ans 8:

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 9:

Class : Class 9

Ans 10:

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 11:

Class : Class 6
it should be t/21

Ans 12:

Class : Class 4
yes I also agree with you

Ans 13:

Class : Class 10
smsmsmsmsmmmsmsmsmsmsmsmsmsmsmfjjjjjjjjjjfjjfjfjfjfjfffffffffffffffyhhhhhhhhhhhhhhhhhhhhhhhhhhhhyhhhhhhhhhhyyyyyyyyyyyyyyyyujjjjjjjjjjjjjjjjikkkkkkkkkkkkkkkkkkkkkkkloooooooooooooooyhhhhhhhhhhhhhhhhbggggggggggggggghndcccccccccccccccccccchndcccccccccccccccccccccccccccedhyncccccccccccccccccccccccccccccccccccccccccccccccccccccchynedcccccccccccccccccccccccccchdenyccccccccccccedyhncccccccccccccccccccccccyyyyyyyyyyyyyyyyyyyyyyyyyyyyyydheycnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnn

Ans 14:

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

Ans 15:

Class : Class 7
hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhheeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeelllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllloooooooooooooooooooooooooooooooooooooooooooooo

Ans 16:

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 17:

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.

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Subject :NSO    Class : Class 6

Ans 1:

Class : Class 7
same

Ans 2:

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

Ans 3:

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

Ans 4:

Class : Class 2

Ans 5:

Class : Class 6

Ans 6:

Class : Class 2

Ans 7:

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

Ans 8:

Class : Class 8
I ALSO AGREE WITH YOU ALL

Ans 9:

Class : Class 7
easyyyyyyyyy

Ans 10:

Class : Class 7
ya

Ans 11:

Class : Class 6
How in processes v condensation came?

Ans 12:

Class : Class 7
easy

Ans 13:

Class : Class 6
I do agree with Bhabani prasad

Ans 14:

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

Ans 15:

Class : Class 6
The answer is not B

Ans 16:

Class : Class 7
NA

Ans 17:

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

Ans 18:

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

Ans 19:

Class : Class 6

Ans 20:

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 21:

Class : Class 9
In process v, actually sublimation takes place

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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 7

Ans 2:

Class : Class 5
6536e6w33346si7s7474r6ssxfge65eueskibidyohio fanomtax rizzler

Ans 3:

Class : Class 7
I prefer option C

Ans 4:

Class : Class 5
The answer is C

Ans 5:

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 6:

Class : Class 8
The answer is C

Ans 7:

Class : Class 5
C

Ans 8:

Class : Class 7
yup

Ans 9:

Class : Class 5
Class :C

Ans 10:

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

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Subject :NSO    Class : Class 5

Ans 1:

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 2:

Class : Class 4

Ans 3:

Class : Class 5
Ans D ( Cow)

Ans 4:

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

Ans 5:

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 6:

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

Ans 7:

Class : Class 8
Mammals do not have 3 eyes

Ans 8:

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 9:

Class : Class 8
Mammals do not have 3 eyes

Ans 10:

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

Ans 11:

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

Ans 12:

Class :
Ans is D

Ans 13:

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

Ans 14:

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 15:

Class : Class 6
The answer is D.

Ans 16:

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 17:

Class : Class 5
forehead? hahahahahahahahah

Ans 18:

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

Ans 19:

Class : Class 4

Ans 20:

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

Ans 21:

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

Ans 22:

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

Ans 23:

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

Ans 24:

Class : Class 5
The answer is D

Ans 25:

Class : Class 9

Ans 26:

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

Ans 27:

Class : Class 4
ydejkcdhbjxdjkdajkdsjhdasjhdajhsadhjdaj

Ans 28:

Class : Class 8
All report an error they give all wrong only

Ans 29:

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

Ans 30:

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

Ans 31:

Class : Class 8

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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 5
correct ans is C

Ans 2:

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 3:

Class : Class 5
CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC

Ans 4:

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 5:

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

Ans 6:

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

Ans 7:

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 8:

Class : Class 10
CORRECT ANSWER SHOULD BE C

Ans 9:

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

Ans 10:

Class : Class 4

Ans 11:

Class : Class 5
how is it b

Ans 12:

Class : Class 8
WHY YOU TYPE SO MANY C Ishaan

Ans 13:

Class : Class 5
answer is c sof is wrong

Ans 14:

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 15:

Class : Class 2

Ans 16:

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

Ans 17:

Class : Class 6
never use sof trainer they know nothing

Ans 18:

Class : Class 7
The ans should be C.

Ans 19:

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 20:

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

Ans 21:

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 22:

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

Ans 23:

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

Ans 24:

Class : Class 5
howwwwwwww ccccccccccc

Ans 25:

Class : Class 9
how is it B!?

Ans 26:

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

Ans 27:

Class : Class 6
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Ans 28:

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 29:

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

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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 4
THE CORRECT ANSWER SHOULD BE 5492

Ans 2:

Class : Class 4

Ans 3:

Class : Class 6

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Subject :NSO    Class : Class 10

Ans 1: (Master Answer)

Class : Class 1
These are referred to as X-linked genes.

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Subject :NSO    Class : Class 7

Ans 1:

Class : Class 3
D is the ans

Ans 2:

Class : Class 7
njkhugbvfjdnvog3ngv;3oinv/

Ans 3:

Class : Class 8
Why not b

Ans 4:

Class : Class 9
HOW'

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Subject :NSO    Class : Class 7

Ans 1:

Class : Class 9
answer is B.

Ans 2:

Class : Class 10

Ans 3:

Class : Class 9

Ans 4:

Class : Class 7
lOl

Ans 5:

Class : Class 7
:) :o

Ans 6:

Class : Class 9

Ans 7:

Class : Class 6
uilbvsln v;nuaerofofi'hxcdwrn r[c0[hpamsc

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