National Science Olympiad Forum By SOF Olympiad Trainer - Page 640

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Subject :NSO    Class : Class 3

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Subject :NSO    Class : Class 7

Ans 1:

Class : Class 9
ans is c

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Subject :NSO    Class : Class 7

Ans 1:

Class : Class 9
Plug key is also a type of switch.

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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 10
Yes, but in the given figure it is sedimentation

Ans 2:

Class : Class 5
Ya, filtration can also remove insoluble impurities but in this case sedimentation and decanation is more appropriate answer.

Ans 3:

Class : Class 5
sedimentation and decantation is the answer . but filtration can not come because we can see in the picture itself that the particles are big ,that's why sedimentation and decantation . if the particles are small but yet insoluble , then only it is filtration . I hope that you understood.

Ans 4:

Class : Class 10
c

Ans 5:

Class : Class 9
it needs to be sedimentation and decantation because the insoluble material present in the liquid is quite heavy you only perform filtration when the particles float over the surface of the water

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Subject :NSO    Class : Class 7

Ans 1:

Class : Class 7
correct option is c

Ans 2:

Class : Class 9
every single sound has its own secondary waves, so the correct option must be option C.

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Subject :NSO    Class : Class 8

Ans 1:

Class : Class 8

Ans 2:

Class : Class 9

Ans 3:

Class : Class 9

Ans 4:

Class : Class 8

Ans 5:

Class : Class 8
Actually, the solution is opposite to the correct answer

Ans 6:

Class : Class 5

Ans 7:

Class : Class 8
Hi, the statement 2 is true but just tells about the type type combustion to which the reaction given in statement belong. it does not tell about actual cause of burning of phosphorus in air at room temperature. the reason for statement 1 is that phosphorus is a highly reactive element that's why burns in air at room temperature.

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Subject :NSO    Class : Class 8

Ans 1:

Class : Class 8
Think in the way of leguminous crops

Ans 2:

Class : Class 8

Ans 3:

Class : Class 8

Ans 4:

Class : Class 8

Ans 5:

Class : Class 9
Supposed to be only ABecause mustard is a non leguminous plantEven it can be rotated with soyabean

Ans 6:

Class : Class 9

Ans 7:

Class : Class 8
Why so? In both the cases soybean is present.

Ans 8:

Class : Class 8
The protein requirement of mustard is fulfilled by the ribozome present in root nodules of soyabean?

Ans 9:

Class : Class 9
Both Wheat and Maize require rotation of crops.

Ans 10:

Class : Class 6
yeah right Triguna!!! in both cases soybean is present? why so?

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Subject :NSO    Class : Class 6

Ans 1:

Class : Class 7
Want option!

Ans 2:

Class : Class 7
my laptop din't provide the options

Ans 3:

Class : Class 9

Ans 4:

Class : Class 6
They did not provide options on my laptop but option C is correct.

Ans 5:

Class : Class 6
they MUST and SHOULD be more CAREFUL. No options??? Then, how should we answer their question??? they take no actions! look:-a person has commented a year ago but?NO RESPONSE

Ans 6:

Class : Class 9

Ans 7:

Class : Class 7
I typed in c. What is this?

Ans 8:

Class : Class 10
They did not give options so that is why it went wrong. these kind of incidents happen very frequently in SOF

Ans 9:

Class : Class 8
they didn't give the options to my computer

Ans 10:

Class : Class 6
options are missing

Ans 11:

Class : Class 10
iT IS NOT LAPTOP'S MISTAKE IT IS THE WEBSITE'S MISTAKE ITSELF.

Ans 12:

Class : Class 10
I got the question with the options in my laptop. For those who did not get the options : it is the website's fault

Ans 13:

Class : Class 10
NO OPYIONS!

Ans 14:

Class : Class 6
they should be more careful

Ans 15:

Class : Class 10
They did not give the options on my iPad so I couldn't see which was the correct ans. something needs to be done about this problem.

Ans 16:

Class : Class 7
They didn't give options

Ans 17:

Class : Class 10
they didn't given on question page so all my friends and I missed that question

Ans 18:

Class : Class 6
They did not give options on my ipad .

Ans 19:

Class : Class 10
no options

Ans 20:

Class : Class 9
they did not give options

Ans 21:

Class : Class 6
They're not even giving me options

Ans 22:

Class : Class 9
they didnt give the options

Ans 23:

Class : Class 6
No options

Ans 24:

Class : Class 6
The shadow will be whole black as the book is an opaque object and will not allow any light to pass through it so on the screen it will form a shadow. And the rest that is the ring, no light will reach it thus how can its shadow be formed?

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Subject :NSO    Class : Class 4

Ans 1:

Class : Class 4

Ans 2:

Class : Class 6
This is actually multiple Answer Q.It is silly!!!

Ans 3:

Class : Class 5
D is correct

Ans 4:

Class : Class 7

Ans 5:

Class : Class 4
Correct answer is C

Ans 6:

Class : Class 10
correct ans is C

Ans 7:

Class : Class 4
C

Ans 8:

Class : Class 10
d

Ans 9:

Class : Class 4
Its just sooo Confusing Tel the logi I dont understand!!

Ans 10:

Class : Class 9
the correct answer should be C

Ans 11:

Class : Class 7

Ans 12:

Class : Class 6
Yes, it is a multiple answer question.

Ans 13:

Class : Class 4
c

Ans 14:

Class : Class 9
I think Dalso

Ans 15:

Class : Class 6
Answer should be C and D.

Ans 16:

Class : Class 7
THE CORRECT ANSWER IS D BECAUSE THEY NEED TO OVERCOME DEFICIENCY OF NITROGEN

Ans 17:

Class : Class 5
Option D

Ans 18:

Class : Class 4
Correct answer is D.Because insectivores plants can photosynthesise.

Ans 19:

Class : Class 7
c

Ans 20:

Class : Class 9
B,Care correct as they can not do photosynthesis , uses his leaves to catch food

Ans 21:

Class : Class 7
B C D is the answers

Ans 22:

Class : Class 7
c and d are both the answers i think

Ans 23:

Class : Class 8
Correct answer is, C

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Subject :NSO    Class : Class 3

Ans 1:

Class : Class 3
U

Ans 2:

Class : Class 3
U

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