National Science Olympiad Forum By SOF Olympiad Trainer

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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 6
C is the answer to this question

Ans 2:

Class : Class 5
Then how is Mars(Planet) rusted?

Ans 3:

Class : Class 5

Ans 4:

Class : Class 5
As only nails in bottle X got rusted,this means both water and airare required for rusting (as bottle X is fulfilling both the conditions) bottle W has only air, bottle Y has only water and bottle Z has oil.i.e., neither air nor water

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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 5
it is C as a liquid changes into a solid by freezing.

Ans 2:

Class : Class 5
cccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccvcccccccccccccccccccccccc

Ans 3:

Class : Class 5
answer is c..freezing

Ans 4:

Class : Class 4
Its C freezing! such an easy question!!

Ans 5:

Class : Class 5
its c a first standard question! oh god! however i am not sure this IS

Ans 6:

Class : Class 5
C is the correct answer.Very easy question

Ans 7:

Class : Class 7
c freezing

Ans 8:

Class : Class 5

Ans 9:

Class : Class 7
c freezing

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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 5
(A)

Ans 2:

Class : Class 5
A) The Arctic penguin.

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Subject :NSO    Class : Class 4

Ans 1:

Class : Class 5
Please explain more nicely

Ans 2:

Class : Class 4

Ans 3:

Class : Class 5
my actual answer is d

Ans 4:

Class : Class 5
mud absorbs the heat and keeps the house cool

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Subject :NSO    Class : Class 3

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Subject :NSO    Class : Class 8

If it is possible to make a meaningful word from the first, second, third, fifth and eighth letters of the word WORDLORE using each letter only once, third letter of the word would be your answer. If only two such words can be formed, your answer would be ‘M’. If more than two such words can be formed, your answer would be ‘N’. And if no such word can be formed your answer would be ‘X’.

A M
B N
C X
D W


What is the other word apart from 'lower'?

Ans 1:

Class : Class 8
Rowler and Owler

Ans 2:

Class : Class 8
What is rowel and owler?

Ans 3:

Class : Class 8
The place where a person is engaged in owling is called an owler and a spiked revolving disc is called a rowel...

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Subject :NSO    Class : Class 3

Ans 1:

Class : Class 3
I

Ans 2:

Class : Class 3

Ans 3:

Class : Class 3
C is the incorrect sentence because respiratory system is not used for providing oxygen to all parts of our body,it is used for only breathing.

Ans 4:

Class : Class 3

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Subject :NSO    Class : Class 6

Match the column I with column II and choose the correct option from the codes given below:

Column I Column II
P. Digestion of food in our body (i) Fast change
Q. Earthquake (ii) Natural, desirable change
R. Falling of stone (iii) Natural, undesirable change
S. Change of seasons (iv) Slow change


A P - (iv), Q - (ii), R - (iii), S - (i)
B P - (iii), Q - (iv), R - (ii), S - (i)
C P - (ii), Q - (i), R - (iv), S - (iii)
D P - (iv), Q - (iii), R - (i), S - (ii)


Correct answer is D coming season is natural and desirable

Ans 1:

Class : Class 7

Ans 2:

Class : Class 7
the answer is d

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Subject :NSO    Class : Class 5

Select the correct statement out of the following.

A Sandy soil needs regular addition of fertilisers as it holds a large amount of water.
B Loamy soil has good qualities of both sandy and clayey soil and thus is most suitable for pottery.
C Clayey soil develops cracks in hot weather causing harm to the roots of plants, thus is not suited for agriculture.
D The water holding capacity is highest in clayey soil and lowest in loamy soil.


Loamy soil is a mixture of sand and clay , which is suitable for growing plants . So, option (B) is also correct

Ans 1:

Class : Class 5

Ans 2:

Class : Class 4
as loamy soil is a mixture of clayey and sandy soil, it holds the right amount of air and water both and it is best suitable for pottery. Thus both the answers B and C should be correct.

Ans 3:

Class : Class 6

Ans 4:

Class : Class 5
Only C is correct it is showing in explanation also.

Ans 5:

Class : Class 3
but as given in the options it says that loamy soil is perfect for pottery which is false . Thus the correct answer is option C.

Ans 6:

Class : Class 6
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Ans 7:

Class : Class 1
The correct answer is C although I did answer as B.I understood that the correct answer is the when I read the solution

Ans 8:

Class : Class 5
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Ans 9:

Class : Class 3
but as given in the options it says that loamy soil is perfect for pottery which is false . Thus the correct answer is option C.

Ans 10:

Class : Class 5

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Subject :NSO    Class : Class 2

Ans 1:

Class : Class 2
QUETION INCORRECT!!!

Ans 2:

Class : Class 2
Answer is d

Ans 3:

Class : Class 2
it should be D

Ans 4:

Class : Class 3
correct answer should be D

Ans 5:

Class : Class 3
correct answer should be D here?

Ans 6:

Class : Class 4
correct answer should be D

Ans 7:

Class : Class 4
Correct Answer should be D

Ans 8:

Class : Class 3
the correct answer should be D

Ans 9:

Class : Class 4

Ans 10:

Class : Class 3
answer should be D !!

Ans 11:

Class : Class 4

Ans 12:

Class : Class 4
Correct answer should be D

Ans 13:

Class : Class 4

Ans 14:

Class : Class 4
correct answer should be D

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