National Science Olympiad Forum By SOF Olympiad Trainer - Page 107

User Forum

Subject :NSO    Class : Class 2

Post Your Answer

Subject :NSO    Class : Class 6

Nitu mixed some iron filings with sulphur powder in a China dish. She heated the contents of China dish. What did she observe during the experiment?

A There was no difference in the contents of China dish before and after heating.
B Before heating, iron filings and sulphur powder could be seen separately but after heating the contents became black.
C Before heating, the iron filings and sulphur powder could not be seen separately.
D Before heating, the contents were black and after heating, iron filings and sulphur could be seen separately.


Post Your Answer

Subject :NSO    Class : Class 5

Ans 1:

Class : Class 7

Ans 2:

Class : Class 6
The answer is option (c)

Post Your Answer

Subject :NSO    Class : Class 7

Post Your Answer

Subject :NSO    Class : Class 5

Ans 1:

Class : Class 5
Bag is the correct ans, theres a mistake

Ans 2:

Class : Class 5
And should be option c sof please solve it

Ans 3:

Class : Class 5
It should be a bag as Watch means Bag. So the answer should be a bag.

Ans 4:

Class : Class 5
bag the correct ans

Ans 5:

Class : Class 4
I think there is some problem in sof

Ans 6:

Class : Class 5
Answer should be bag

Ans 7:

Class : Class 6
ANS SHOULD BE BAG

Ans 8:

Class : Class 5
The Answer should be bag

Ans 9:

Class : Class 6
it should be watch means bag

Ans 10:

Class : Class 6
The answer should be bag

Ans 11:

Class : Class 5
Ans should be bag ( Option C)because Watch means Bag and we read time through a watch

Ans 12:

Class : Class 5

Ans 13:

Class : Class 5
Yea thi is cheating

Ans 14:

Class : Class 6
How can we read time through a book are you mad

Post Your Answer

Subject :NSO    Class : Class 5

Post Your Answer

Subject :NSO    Class : Class 2

Post Your Answer

Subject :NSO    Class : Class 6

Ans 1:

Class : Class 8
* let not left

Ans 2:

Class : Class 8
key is a conductor of electricity so if you place it between the probes the key will left the electricity pass through it. also the other options are all names of insulators they will not make the bulb glow hence the answer is C

Post Your Answer

Subject :NSO    Class : Class 2

Ans 1:

Class : Class 3
answer is A no b ceck i

Post Your Answer

Subject :NSO    Class : Class 8

Read the statements given below and choose the correct option.
Statement 1 : The lowest temperature at which a substance catches fire is called its ignition temperature.
Statement 2 : Kerosene oil does not catch fire at its own at room temperature.

A Statement 1 and statement 2 both are correct and statement 2 is correct explanation of statement 1.
BStatement 1 and statement 2 both are correct but statement 2 is not a correct explanation of statement 1.
CStatement 1 is correct but statement 2 is incorrect.
DBoth the statements are incorrect.


Post Your Answer