National Science Olympiad Forum By SOF Olympiad Trainer

User Forum

Subject :NSO    Class : Class 6

Few processes are given below along with one word used for the change involved. Which of the given terms does not match with the process?

A The perfume from the bottle that you left open last evening was empty in the morning. - Evaporation
B You put a lid on the cup containing hot tea, the inside of the lid gets wet. - Condensation
C You took out few ice cubes from the freezer and put in a glass. After some time, there was only water, no ice. - Sublimation
D The sweetened milk which you kept in the freezer last night has become ice cream now. - Freezing


Search for C and then see

Post Your Answer

Subject :NSO    Class : Class 8

Ans 1:

Class : Class 4
Concave mirrors are used in solar cookers. as concave mirrors are converging, the are used to concentrate the sun's heat on the utensil.

Ans 2:

Class : Class 7
I think plane mirrors can also do it to some extent but more prominent is concave

Ans 3:

Class : Class 5
the answer is B

Post Your Answer

Subject :NSO    Class : Class 7

Ans 1:

Class : Class 7
I THINK SO ANSWER IS C

Ans 2:

Class : Class 7
B IS THE CORRECTONE. BELIVE ME

Ans 3:

Class : Class 1
C is the correct answer. I teach Physics. The angle of incidence entering and exiting is the same due to the same medium.

Ans 4:

Class : Class 9
ANSWER a. Refraction of light and the direction of refraction depends upon the density of the object because it reduces the speed of light.the Flint glass is more denSer than water and the air is no too denSer so there will be no refraction in the caSe of air. Therefore light refracts in water and the glass. ANOTHER REASON!: Light travalS on a straight line .

Ans 5:

Class : Class 8
Its "c" because some of the light rays get refracted

Ans 6:

Class : Class 8
ITS OPTION "C" AS SOME OF THE LIGHT REFRACTS IN WATER AND AIR

Post Your Answer

Subject :NSO    Class : Class 4

Ans 1:

Class : Class 5
question is wrong

Ans 2:

Class : Class 5

Post Your Answer

Subject :NSO    Class : Class 4

Ans 1: (Master Answer)

Class : Class 1
The correct answer is C.

Post Your Answer

Subject :NSO    Class : Class 5

Ans 1:

Class : Class 7
yes,Sharad you are right but can you explain

Ans 2:

Class : Class 7

Ans 3:

Class : Class 5
Hello ! It is C as when the smell is spread , People notice it at some other room . It's the same with perfume .

Post Your Answer

Subject :NSO    Class : Class 3

Ans 1: (Master Answer)

Class : Class 1
The correct answer is C. Because, after May, the consumption keeps getting lower which indicates that they started saving water.

Post Your Answer

Subject :NSO    Class : Class 6

Shruti in an experiment, put a healthy, green plant in different conditions during a day, at different times P, Q and R. The rate of oxygen absorbed or released by this plant is shown in the given graph.



Which of the following assumptions can be made about this experiment?

AAt time P, that plant was put in a dark cupboard.
BAt time Q, plant is not respiring because, no oxygen is being taken up.
CAt time Q, the plant was moved to a dark room.
DAt time R, the plant was put in a well lighted place.


The answer given by Olympiad trainer is B but We all know that plants respire all the time. May I know the right answer

Post Your Answer

Subject :NSO    Class : Class 4

Ans 1:

Class : Class 5

Ans 2:

Class : Class 5
Screw is used to fasten things and not really used to lower and raise things.. Isnt D incorrect too?

Post Your Answer

Subject :NSO    Class : Class 3

Ans 1:

Class : Class 5
the figure markings are not clearly printed.

Ans 2:

Class : Class 4

Ans 3:

Class : Class 4
Yes, the figure is not clearly printed and the options are not too clear .

Ans 4:

Class : Class 5
The figure is not clear. The options have not been printed correctly.

Post Your Answer