National Science Olympiad Forum By SOF Olympiad Trainer - Page 640

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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 10
c

Ans 2:

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

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

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 9

Ans 2:

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.

Ans 3:

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

Ans 4:

Class : Class 8

Ans 5:

Class : Class 8

Ans 6:

Class : Class 5

Ans 7:

Class : Class 9

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Subject :NSO    Class : Class 8

Ans 1:

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

Ans 2:

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

Ans 3:

Class : Class 9

Ans 4:

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

Ans 5:

Class : Class 8

Ans 6:

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

Ans 7:

Class : Class 8

Ans 8:

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

Ans 9:

Class : Class 8
Think in the way of leguminous crops

Ans 10:

Class : Class 8

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Subject :NSO    Class : Class 6

Ans 1:

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

Ans 2:

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

Ans 3:

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

Ans 4:

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

Ans 5:

Class : Class 9

Ans 6:

Class : Class 6
they should be more careful

Ans 7:

Class : Class 10
no options

Ans 8:

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 9:

Class : Class 9

Ans 10:

Class : Class 7
They didn't give options

Ans 11:

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 12:

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

Ans 13:

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 14:

Class : Class 9
they didnt give the options

Ans 15:

Class : Class 9
they did not give options

Ans 16:

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 17:

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

Ans 18:

Class : Class 6
No options

Ans 19:

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

Ans 20:

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?

Ans 21:

Class : Class 7
Want option!

Ans 22:

Class : Class 6
options are missing

Ans 23:

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

Ans 24:

Class : Class 10
NO OPYIONS!

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Subject :NSO    Class : Class 4

Ans 1:

Class : Class 4
Correct answer is C

Ans 2:

Class : Class 10
correct ans is C

Ans 3:

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

Ans 4:

Class : Class 5
Option D

Ans 5:

Class : Class 4

Ans 6:

Class : Class 4
c

Ans 7:

Class : Class 7

Ans 8:

Class : Class 8
Correct answer is, C

Ans 9:

Class : Class 7

Ans 10:

Class : Class 10
d

Ans 11:

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

Ans 12:

Class : Class 4
C

Ans 13:

Class : Class 5
D is correct

Ans 14:

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

Ans 15:

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

Ans 16:

Class : Class 7
B C D is the answers

Ans 17:

Class : Class 9
I think Dalso

Ans 18:

Class : Class 7
c

Ans 19:

Class : Class 9
the correct answer should be C

Ans 20:

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

Ans 21:

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

Ans 22:

Class : Class 6
Answer should be C and D.

Ans 23:

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

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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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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 9
i agree with Gauri Singh and Kashvi Sharma

Ans 2:

Class : Class 10
Option C is right

Ans 3:

Class : Class 7
option c is correct

Ans 4:

Class : Class 6
option b is correct because by sitting with his head facing up wards would take the blood flow downside

Ans 5:

Class : Class 5
option c is correct

Ans 6:

Class : Class 6
Answer B is right because if you refer to the 4th grade book, the first point written is to tilt your your head back

Ans 7:

Class : Class 9
Yes,In the book it is said that the patient should be made sit and lean forward not backward and patient should be told to pinch the sides of the nose together. So the answer should be C.

Ans 8:

Class : Class 7
Option C is correct

Ans 9:

Class : Class 5
On page 75 of "Learning Science for Smarter Life" for class V it is mentioned that person should sit down and lean forward. It also says to pinch the nose.All answer choices of this question are therefore incorrect.

Ans 10:

Class : Class 5
yes. Gauri Singh is right . option c is right .

Ans 11:

Class : Class 8

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Subject :NSO    Class : Class 6

Ans 1:

Class : Class 8
the answer should "a" as acclimatisation not adaptation

Ans 2:

Class : Class 8
the answer should "a" as acclimatisation not adaptation

Ans 3:

Class : Class 4
Acclimatization and adaptation mean two totally different things. Adaptation means permanent adjustment to our habitat whereas acclimatization means temporary adjustment to a place where we temporarily stay for some time and get used to. In my opinion, option A is the right answer.

Ans 4:

Class : Class 8
the answer should "a" as acclimatisation not adaptation

Ans 5:

Class : Class 6
The answer is A. You should Read the book twice again. But even then also you think that the answer is B than the book is a spam. Adaptation is the permanent feature of an organism which helps it to survive in its habitat, while acclimatisation is a temprory feature or change in feature of an organism which helps it to survive in any other place rather than its habitat......................................................................

Ans 6:

Class : Class 8
the answer should "a" as acclimatisation not adaptation

Ans 7:

Class : Class 8
the answer should "a" as acclimatisation not adaptation

Ans 8:

Class : Class 8
the answer should "a" as acclimatisation not adaptation

Ans 9:

Class : Class 4

Ans 10:

Class : Class 8
the answer should "a" as acclimatisation not adaptation

Ans 11:

Class : Class 8
the answer should "a" as acclimatisation not adaptation

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Subject :NSO    Class : Class 5

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