National Science Olympiad Forum By SOF Olympiad Trainer - Page 506

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Subject :NSO    Class : Class 3

Ans 1:

Class : Class 4
How is it C

Ans 2:

Class : Class 7
B is not correct as it is gravity that causes objects to fall on the ground

Ans 3:

Class : Class 4
how about B

Ans 4:

Class : Class 7
B is not correct as it is gravity that causes objects to fall on the ground

Ans 5:

Class : Class 5
Yes how it can be C ?

Ans 6:

Class : Class 9

Ans 7:

Class : Class 8

Ans 8:

Class : Class 7
frictional force is answer prevents from slipping

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Subject :NSO    Class : Class 4

Ans 1:

Class : Class 4
Most off your questions are wrong

Ans 2:

Class : Class 5
confusing question

Ans 3:

Class : Class 4
Oh my! thanks for solving my problem .

Ans 4:

Class : Class 4
Thank you for the explanation

Ans 5:

Class : Class 5
questio is wrong

Ans 6:

Class : Class 4
But no spider species have 6 legs

Ans 7:

Class : Class 4
The option D. is wrong. It mentions 3 pairs of wings whereas it should be 2 pairs of wings.

Ans 8:

Class : Class 4
Keanna you are a copycat

Ans 9:

Class : Class 4
Hey, some spider species have six legs, usually out of India. And the whole explanation is wrong.

Ans 10:

Class : Class 5
There is written on option D that Q could have three pair of wing but the question is wrong.There should be written two pair instead of three pair.Two pair is written on solution.

Ans 11:

Class : Class 5

Ans 12:

Class : Class 6
Please explain more nicely and Keanna thank you for explaining

Ans 13:

Class : Class 4
But no spider species have 6 legs

Ans 14:

Class : Class 5

Ans 15:

Class : Class 5

Ans 16:

Class : Class 7
A. P could be cold-blooded animal whereas R could be warm-blooded animal. ----- Frog has backbone, lays eggs and is a cold-blooded animal. So, P can be a Frog. Humans have backbone and hair, and they are warm-blooded. So, R can be a Human Being. So, this statement is Correct.B. Q could be six-legged animal whereas R could be four-legged animal. ----- Spiders have six legs and they lay eggs. So, Q can be a Spider. Horses are four-legged animals. They have backbone and hair. So, R can be a Horse. So, this statement is Correct.C. R could breathe through lungs whereas S could breathe through spiracles. ----- Dogs breathe through lungs, they have backbone and hair. So, R could be a Dog. Cockroaches breathe through spiracles. They have backbone and lay eggs, but they have no hair. So, S can be a Cockroach. So, this statement is Incorrect.D. P could have a pair of wings whereas Q could have two pairs of wings. ----- Birds have a pair of wings. They have backbone and they lay eggs. So, P could be a Bird. Most insects have two pair of wings, and they lay eggs. So, Q could be an Insect. So, this statement is Correct.Hence, the right answer is Option C.

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Subject :NSO    Class : Class 4

Ans 1:

Class : Class 4

Ans 2:

Class : Class 5
kn

Ans 3:

Class : Class 5
kn

Ans 4:

Class : Class 5
kn

Ans 5:

Class : Class 2
please explain the reasoning

Ans 6:

Class : Class 5
kn

Ans 7:

Class : Class 4
Let’s study the given food-web carefully:The food-web is starting from P. So, P are plants (Producers). Q, T and U are eating these plants, so they are Herbivores (Primary Consumers). R are eating Q, and V are eating U, so they are Carnivores (Secondary Consumers). S are eating T as well as R

Ans 8:

Class : Class 4
ans is b

Ans 9:

Class : Class 4

Ans 10:

Class : Class 5
kn

Ans 11:

Class : Class 5
wth

Ans 12:

Class : Class 5
kn

Ans 13:

Class : Class 4
The ans is A

Ans 14:

Class : Class 5

Ans 15:

Class : Class 7
OMG!How confusing!How did the others do it!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Ans 16:

Class : Class 5
I did it with a guess and got it right somehow!

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Subject :NSO    Class : Class 6

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Subject :NSO    Class : Class 3

Ans 1:

Class : Class 3
Answer can be A also as Q can be duck and P can be penguin and both of them have webbed feet and penguins live in places like Antartica.

Ans 2:

Class : Class 3
is it option C ?

Ans 3:

Class : Class 9
d

Ans 4:

Class : Class 3
D

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Subject :NSO    Class : Class 8

Ans 1:

Class : Class 9
B

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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 7
C is the answer to this question because the leaves are uncovered

Ans 2:

Class : Class 5
SOF, Isnt the answer C?

Ans 3:

Class : Class 5
isn't the answer c

Ans 4:

Class : Class 3

Ans 5:

Class : Class 6
Why will it be D? It should be C, because the Vaseline blocks the stomata of the leaves, and thus blocks the surface for transpiration, so water droplets will not appear on those leaves, but the uncovered leaves were not stained or covered with anything, so the transpiration process in those leaves should stay normal.

Ans 6:

Class : Class 8

Ans 7:

Class : Class 6

Ans 8:

Class : Class 6
Ans is C because like humans, plants also sweat. This is called transpiration.

Ans 9:

Class : Class 5

Ans 10:

Class : Class 7
Why D?It should be option C .

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Subject :NSO    Class : Class 7

Ans 1:

Class : Class 7
D

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Subject :NSO    Class : Class 3

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Subject :NSO    Class : Class 7

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