National Science Olympiad Forum By SOF Olympiad Trainer

User Forum

Subject :NSO    Class : Class 5

Ans 1:

Class : Class 5
I totally agree...

Ans 2:

Class : Class 6

Ans 3:

Class : Class 6

Ans 4:

Class : Class 5
Answer can be C also as 323 is the only prime number.

Ans 5:

Class : Class 5

Post Your Answer

Subject :NSO    Class : Class 4

Ans 1:

Class : Class 4
Explain pls

Ans 2:

Class : Class 4
Explain

Post Your Answer

Subject :NSO    Class : Class 3

Nidhi was asked to draw the shadow of a tumbler formed on the screen
behind it, when it is kept in different manners at the same position and light is shone on it from the same direction. She drew three shadows as shown here.


Read the following statements regarding it and select the INCORRECT ones.
(i) Shadow 1 is formed when the tumbler is kept horizontally.
(ii) Shadow 2 is formed when the tumbler is kept vertically upright.
(iii) Shadow 3 is incorrect because the given tumbler cannot cast a rectangular shadow.

A (i) and (ii) only
B (ii) and (iii) only
C (i) and (iii) only
D None of these


Ans 1:

Class : Class 5

Ans 2:

Class : Class 3

Ans 3:

Class : Class 3
A

Ans 4:

Class : Class 4
d

Post Your Answer

Subject :NSO    Class : Class 3

Ans 1:

Class : Class 4
(B)

Ans 2:

Class : Class 3
But no force is acting on the book

Ans 3:

Class : Class 4
b is answer

Ans 4:

Class : Class 3
B

Ans 5:

Class : Class 4
The answer is (B) as the book is under gravitational force that's why the book is on the table.

Post Your Answer

Subject :NSO    Class : Class 5

Ans 1:

Class : Class 6
Ans is C because due to oil spill fishes die because it happens in water. Also, aquatic birds get covered with black coating because of that they can't breathe and they die.

Ans 2:

Class : Class 4
C , oil spill

Ans 3:

Class : Class 6
sorry by mistake i have written B but the answer is C

Ans 4:

Class : Class 6
answer is B because Oil spill is the condition when mineral oil or petroleum oil being carried on a ship gets spilled in the sea due to some reason. This causes death of aquatic organisms. Oil gets coated on feathers of aquatic birds making them unable to fly and to regulate their body temperatures. This causes death of the birds.

Post Your Answer

Subject :NSO    Class : Class 4

Post Your Answer

Subject :NSO    Class : Class 4

Post Your Answer

Subject :NSO    Class : Class 3

Ans 1:

Class : Class 1
A

Post Your Answer

Subject :NSO    Class : Class 5

Ans 1:

Class : Class 5
THE CORRECT ANSWER IS C, BECAUSE BLACK GOLD IS ANOTHER NAME FOR CRUDE OIL OR PETROLEUM .

Ans 2:

Class : Class 5
c is the correct answer

Ans 3:

Class : Class 1
Ans 6 is absolutely right. Ans is C.

Ans 4:

Class : Class 5

Ans 5:

Class : Class 5

Ans 6:

Class : Class 6
Ans is C because Black Gold is another name for coal.

Ans 7:

Class : Class 4
I prefer option C.

Post Your Answer

Subject :NSO    Class : Class 7

Ans 1:

Class : Class 6
tibia and fibula

Ans 2:

Class : Class 8
Tibia and Fibula(option C.)

Post Your Answer