National Science Olympiad Forum By SOF Olympiad Trainer - Page 472

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Subject :NSO    Class : Class 6

Ans 1:

Class : Class 7
don't protest

Ans 2:

Class : Class 8
Actually the image shown of knee is resembling to shoulder bones that's why its so confusing

Ans 3:

Class : Class 4
Very confusing.

Ans 4:

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.

Ans 5:

Class : Class 6
even if it looks like shoulder joint, it is incorrect, because shoulder joint has only one hinge joint not two, same for knee. and they said select the INCORRECT option, hence it is option C. And if you dont beleive me ask your science/biology teacher, they will say the same thing.

Ans 6:

Class : Class 7
It's incorrect

Ans 7:

Class : Class 6

Ans 8:

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

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Subject :NSO    Class : Class 6

Ans 1:

Class : Class 8
it!!!!!!!!!!! is!!!!!!!!!! ddddddddddddddddddddddd!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Ans 2:

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 3:

Class : Class 6
Logically it should be C

Ans 4:

Class : Class 7
wow

Ans 5:

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

Ans 6:

Class : Class 10
The answer is D.

Ans 7:

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

Ans 8:

Class : Class 8

Ans 9:

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

Ans 10:

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

Ans 11:

Class : Class 8
No, it's d

Ans 12:

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 13:

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 14: (Master Answer)

Class : Class 1

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Subject :NSO    Class : Class 5

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Subject :NSO    Class : Class 6

Ans 1:

Class : Class 1
the answer is B!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 8
B is the answer

Ans 2:

Class : Class 7
B is the answer to this question but it is showing C as correct option

Ans 3:

Class : Class 10
C is the correct option as it is saying what is used for 'agriculture'

Ans 4:

Class : Class 6
Think the the option should be (b)

Ans 5:

Class : Class 5
It should be B

Ans 6:

Class : Class 7

Ans 7:

Class : Class 7
Seed drill is a tool used for sowing seeds in agriculture. It has a funnel shaped part where seeds are put in. These seeds are buried deep in the soil through hollow pipes.So b is the answer

Ans 8:

Class : Class 8

Ans 9:

Class : Class 6
shouldn;t the correct ans be B?

Ans 10:

Class : Class 5
Both fern and mushroom have spores.Both A and B can be correct

Ans 11:

Class : Class 9

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Subject :NSO    Class : Class 6

Ans 1:

Class : Class 10

Ans 2:

Class : Class 9
Distillation can also be used. It is also correctThe answer is incorrect

Ans 3:

Class : Class 10

Ans 4:

Class : Class 6
WHY DISTILLATION SEPERATION PART WRONG?

Ans 5:

Class : Class 7
Distillation can also be usedthe ans C is correct

Ans 6:

Class : Class 7
Why is the distillation method wrong?? It should be correct!! The answer should be D!!

Ans 7:

Class : Class 7
Wrong answer

Ans 8:

Class : Class 10
WHY DISTILLATION METHOD FOR SEPARATION OF TWO IMMISCIBLE LIQUID IS WRONG?

Ans 9:

Class : Class 7
Correct answer is D, As distillation process is used to separate immiscible liquids as both have different boiling points.

Ans 10:

Class : Class 1
the answer is C!!!!!!!!!!!!!!!!

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Subject :NSO    Class : Class 6

Ans 1:

Class : Class 6
answer is b

Ans 2:

Class : Class 1
diamond is a non conducter

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Subject :NSO    Class : Class 3

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Subject :NSO    Class : Class 4

Ans 1:

Class : Class 4
The answer is wrong.It should be option C

Ans 2:

Class : Class 6
Solute Solvent =Solution

Ans 3:

Class : Class 4
yep it should be C

Ans 4:

Class : Class 7
The answer is D. because the the substance in which solute is dissolved is called solvent. and the mixture formed from solvent and solute is called solution.

Ans 5:

Class : Class 4

Ans 6:

Class : Class 4

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Subject :NSO    Class : Class 3

Ans 1:

Class : Class 3
The correct answer is B

Ans 2:

Class : Class 3
The correct answer is B

Ans 3:

Class : Class 3
The correct answer is B

Ans 4:

Class : Class 3
The correct answer is B

Ans 5:

Class : Class 3
B

Ans 6:

Class : Class 3
B

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