National Science Olympiad Forum By SOF Olympiad Trainer - Page 403

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Subject :NSO    Class : Class 7

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Subject :NSO    Class : Class 4

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Subject :NSO    Class : Class 3

Ans 1:

Class : Class 3
D

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Subject :NSO    Class : Class 5

The given diagram shows the life cycle of a plant.

Which of the following statements are true regarding it?
(i) Sunlight is not needed at stage Q.
(ii) Photosynthesis takes place only at stages R and S.
(iii) Stage P is not affected by what happens at stage T.
(iv) The seed at stage P needs air, water and warmth to reach stage Q.

A (i) and (iv) only
B (ii) and (iii) only
C (i), (ii) and (iii) only
D (i), (ii), (iii) and (iv)


Ans 1:

Class : Class 9
The answer is b because photosynthesis starts when the plant comes out of the seed and p does not get affected by what is affecting the stage T of the plant

Ans 2:

Class : Class 8
Please explain this question to me Revisewise Expert.

Ans 3:

Class : Class 5
iii and iv are correct.

Ans 4:

Class : Class 5
Hey there i cant understand that stage p is afectted by staget

Ans 5:

Class : Class 7

Ans 6:

Class : Class 7
Step 1: option iv is correct and option iv is in option a

Ans 7:

Class : Class 5

Ans 8:

Class : Class 8
A is wrong sunlight is needed in stage Q

Ans 9:

Class : Class 5
A

Ans 10:

Class : Class 8
i and iii is correct,not i and iv

Ans 11:

Class : Class 5
d is the right answer because when the plant in inside the seed it need air water warmth so it is only in option d

Ans 12:

Class : Class 5
qwertyuiopasdfghjklzxcvbnm,./;'[]\=-0987654321` _)(*

Ans 13:

Class : Class 5
A

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Subject :NSO    Class : Class 6

Study the given Venn diagram.

Centre point represents

AFormation of clouds
BGlowing of hot iron
CThreshing of wheat crop
DRusting of iron.


The answer is option D as rusting of Iron is a slow change as it takes along time.It is a chemical change as many chemical reactions occur when Rusting of Iron happens It is a Irreversible change as you cannot reverse the Rusting of Iron.Thank youI hope I prove to be some help.

Ans 1:

Class : Class 6
The answer is D as 1.Rusting Is slow change as it takes a long time for Iron to rust.2.Rusting Is also a chemical change as many chemical reactions occur in The Rusting process 3.Rusting is a Irreversible change as we can not change the effect of rustingThank youI hope I proved to be some help

Ans 2:

Class : Class 8
Thanks

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Subject :NSO    Class : Class 4

Study the following conversation.
Amit : P is body building food and helps our body to grow.
Beena : Q is undigestible and helps to remove waste material out of the body.
Asha : R is energy giving food and among all the nutrients it gives maximum energy.
Select the INCORRECT option regarding P, Q and R.

AP could be produced in the human skin on being exposed to the sunlight.
BR could help in the formation of blood and is found in citrus fruits.
CQ is stored in the body and could help to keep the body warm.
DAll of these


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Subject :NSO    Class : Class 3

Ans 1:

Class : Class 3
D

Ans 2:

Class : Class 3
D

Ans 3:

Class : Class 3
D

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Subject :NSO    Class : Class 6

Ans 1:

Class : Class 8
When u know all the answers then what is the need to ask us??

Ans 2:

Class : Class 7
It's incorrect

Ans 3:

Class : Class 7
Actually the image shown of knee is resembling to shoulder bones that's why its so confusing

Ans 4:

Class : Class 7
don't protest

Ans 5:

Class : Class 6

Ans 6:

Class : Class 4
Very confusing.

Ans 7:

Class : Class 7
P shows the knee joint. The knee joint is a hinge joint, which allows movement along one axis only, to flex or to extend.Q shows a joint where our neck joins the head. It is a pivotal joint. It allows us to bend our head forward and backward and turn the head to our right or left.Now, let’s check the given options and find the incorrect one regarding these two joints:A. Joint P allows movement in one direction only. ----- Correct. Joint P is a hinge joint, which allows movement along one axis only, to flex or to extend.B. Joint Q allows movement in many planes. ----- Correct. Joint Q allows us to bend our head forward and backward and turn the head to our right or left.C. Knee bones have two P joints. ----- Incorrect. Knee bones have just one hinge joint.D. Joint Q acts like a pivot and allows the circular motion of the part around it. ----- Correct. We can move our head around in circular motion at the neck joint.Hence, Option C is the right answer.

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Subject :NSO    Class : Class 6

Ans 1:

Class : Class 6
it should be c. how can it be d as it is hollow at the center?

Ans 2:

Class : Class 8
No, it's d

Ans 3:

Class : Class 6
Logically it should be C

Ans 4:

Class : Class 6
the answer according to the question is wrong

Ans 5:

Class : Class 7
From the image, we can say that the image is formed by a round opaque object. Now, let’s check the following objects and find the one which will not form the above shadow:A. An egg ----- An egg is oval in shape, but if the source of light is placed at either of the ends, the shadow formed would be round.B. A vase ----- A vase can have any size and shape, but usually a regular vase has rounded edges. So, if source of light is placed at either of the ends, the shadow formed would be round.C. A cone ----- A cone has a pointed end, and a flat rounded end. So, if a source of light is placed at either of the ends, the shadow formed would be round.D. A metal ring ----- A metal ring is round, but hollow in between, so light would pass through the central part. So, the shadow formed by the ring will be a round hollow.Hence, the right answer is Option D.

Ans 6:

Class : Class 3
NO !!!!!! THE ANS IS C!!!!

Ans 7: (Master Answer)

Class : Class 1

Ans 8:

Class : Class 7
wow

Ans 9:

Class : Class 10
The answer is D.

Ans 10:

Class : Class 6
Ans from the question is wrong. the hollow part will allow light to pass and thus the given shadow will not be formed

Ans 11:

Class : Class 7
it!!!!!!!!!!! is!!!!!!!!!! ddddddddddddddddddddddd!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Ans 12:

Class : Class 6
The answer should be D as all the options except D have a circular point.metal rings also have circle shape for fitting of fingers but they are hollow and let Light pass through it and as we know Light only passes through Opaque objects.

Ans 13:

Class : Class 6
It will be D !!!!!!!!!!

Ans 14:

Class : Class 7

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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 8
D

Ans 2:

Class : Class 5
D

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