National Science Olympiad Forum By SOF Olympiad Trainer - Page 457

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Subject :NSO    Class : Class 6

Ans 1:

Class : Class 8

Ans 2:

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 3:

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 4:

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

Ans 5:

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

Ans 6:

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

Ans 7:

Class : Class 6
Logically it should be C

Ans 8:

Class : Class 8
No, it's d

Ans 9:

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

Ans 10:

Class : Class 7
wow

Ans 11:

Class : Class 10
The answer is 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: (Master Answer)

Class : Class 1

Ans 14:

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

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

Ans 2:

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

Ans 3:

Class : Class 5
It should be B

Ans 4:

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

Ans 5:

Class : Class 9

Ans 6:

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

Ans 7:

Class : Class 8
B is the answer

Ans 8:

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 9:

Class : Class 8

Ans 10:

Class : Class 7

Ans 11:

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

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Subject :NSO    Class : Class 6

Ans 1:

Class : Class 10

Ans 2:

Class : Class 6
WHY DISTILLATION SEPERATION PART WRONG?

Ans 3:

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

Ans 4:

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

Ans 5:

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

Ans 6:

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

Ans 7:

Class : Class 7
Wrong answer

Ans 8:

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

Ans 9:

Class : Class 10

Ans 10:

Class : Class 8
Distillation can also be used. It is also correctThe answer is incorrect

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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
Solute Solvent =Solution

Ans 2:

Class : Class 4

Ans 3:

Class : Class 4

Ans 4:

Class : Class 4
yep it should be C

Ans 5:

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 6:

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

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Subject :NSO    Class : Class 3

Ans 1:

Class : Class 3
B

Ans 2:

Class : Class 3
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
The correct answer is B

Ans 6:

Class : Class 3
The correct answer is B

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Subject :NSO    Class : Class 4

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