National Science Olympiad Forum By SOF Olympiad Trainer - Page 486

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Subject :NSO    Class : Class 4

Ans 1:

Class : Class 7

Ans 2:

Class : Class 4

Ans 3:

Class : Class 10
option B

Ans 4:

Class : Class 5
white you are rude for sure and it IS b

Ans 5:

Class : Class 4

Ans 6:

Class : Class 9
Kanav , if you know the answer then why have you posted it on the forum ?

Ans 7:

Class : Class 3

Ans 8:

Class : Class 4
how do you know that Kavan knows the correct answer

Ans 9:

Class : Class 7
is is b how

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Subject :NSO    Class : Class 6

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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 6
I think answer is wrong , use of tourniquet was preferred method until few years ago , it has been found it can damage blood flow and nerves

Ans 2:

Class : Class 5
answer is wrong it should be c

Ans 3:

Class : Class 5
souvik is saying 'avoid giving water to the person in case of poisoning so the poison does not spread in the body. and tying torniquet just above the wound will spread the poison more. so, the answer should be C

Ans 4:

Class : Class 7
Answer is wrong

Ans 5:

Class : Class 6
I think answer is wrong. Shivani is also right. Using a tourniquet prevents the poisoned blood from reaching the heart.

Ans 6:

Class : Class 5
answer is ok.

Ans 7:

Class : Class 8

Ans 8:

Class : Class 3
Answer is wrong, Souvik is saying 'avoid' while the answer is giving a different explanation .All Samrak, Souvik and Shivani are wrong.

Ans 9:

Class : Class 6
answer is wrong because if we apply tourniquet it may damage the nerves. the poison will remain its place but it may kill all the cells there

Ans 10:

Class : Class 8
OPTION OF ANSWERS ARE WRONG. SIMMI AND SAMRAT HAVE MADE WRONG STATEMENT

Ans 11:

Class : Class 6
the options are wrong...... even the explaination is wrong

Ans 12:

Class : Class 5

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Subject :NSO    Class : Class 3

Ans 1:

Class : Class 9
The correct answer is C.

Ans 2:

Class : Class 3
The correct answer is C

Ans 3:

Class : Class 3
online document so C

Ans 4:

Class : Class 3
how can we send parcels on e-mail

Ans 5:

Class : Class 4

Ans 6:

Class : Class 3
C

Ans 7:

Class : Class 3
your answer is right

Ans 8:

Class : Class 3

Ans 9:

Class : Class 8
C

Ans 10:

Class : Class 4

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Subject :NSO    Class : Class 7

Ans 1:

Class : Class 4
C is the correct answer. Force is applied to stop the vehicle. The formulae of force is mass * acceleration. Acceleration is final velocity - initial velocity by time. F= M*{(v-u)/t} and its kinetically equation is F=M *[v square - u square/ 2 * distance]. Which ever formula for force has been taken MASS is important. So clearly MASS HAS A ROLE TO PLAY. hence the answer must be C

Ans 2:

Class : Class 9
Apropos to the question the mass of the car has a role in the momentum of the car, as Momentum=mv ,therefore option 'C' should be the correct answer.

Ans 3:

Class : Class 8
c is the correct answer and solution is also given in favour of option c. but answer is b

Ans 4:

Class : Class 9
Yes

Ans 5:

Class : Class 9

Ans 6:

Class : Class 5

Ans 7:

Class : Class 9
No b is only

Ans 8:

Class : Class 6
Though it looks like mass has no role to play in braking distance, actually coeff of friction (COF) between tyre and road surface has inverse relationship with braking distance. COF depends on normal force due to weight of vehicle and therefore indirectly mass plays a role on braking distance. The correct answer should be C

Ans 9:

Class : Class 9
C only

Ans 10:

Class : Class 7
if you read the solution properly it is quite clear that the answer is b

Ans 11:

Class : Class 8
C should be the correct answer. Same has been explained in the solution also.

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Subject :NSO    Class : Class 7

Ans 1:

Class : Class 5

Ans 2:

Class : Class 7
it should be destarched first then keep the setup in sunlight because if we will directly test the presence of starch both the leaves will show blue -black color as there will be starch already present in both of them. So the correct answer should be OPTION A

Ans 3:

Class : Class 7
It should be destarched first

Ans 4:

Class : Class 8
option b

Ans 5:

Class : Class 8
Destarching of leaf is a more effective way so option A should be correct

Ans 6:

Class : Class 7
The plant should be destarched first and then used for the experiment To accurately test for the presence of starch in leaves X and Y.

Ans 7:

Class : Class 8
option b

Ans 8:

Class : Class 1
option B

Ans 9:

Class : Class 8
The leaves should be destarched first, so that there is no presence of starch prior to the experiment in any of the leaves. In that manner, the experiment will be more clear. Therefore, Option A is also a potential answer.

Ans 10:

Class : Class 8
option b

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Subject :NSO    Class : Class 3

Ans 1:

Class : Class 6

Ans 2:

Class : Class 5
b

Ans 3:

Class : Class 4
B!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Ans 4:

Class : Class 5
all the questions answer is b

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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 5
D is the answer

Ans 2:

Class : Class 5

Ans 3:

Class : Class 5
D

Ans 4: (Master Answer)

Class : Class 1

Ans 5:

Class : Class 5
d is correct answer

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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 5
please explain

Ans 2:

Class : Class 4
wrong answer

Ans 3:

Class : Class 3
very tough though the ans is c

Ans 4:

Class : Class 6

Ans 5:

Class : Class 5
tough one,i think the explanation is:S is lens and that part is not colored and t is either eye lids or cornea and neither of them is folded skin.acoording to me

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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 6
What's the Correct answer?

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