National Science Olympiad Forum By SOF Olympiad Trainer - Page 446

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Subject :NSO    Class : Class 2

Ans 1:

Class : Class 6
Bark

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Subject :NSO    Class : Class 2

Process X helps in drying up of wet clothes when put on clothesline under the Sun. Process Y helps in formation of cloud from water vapours present in air. Identify the processes and select the INCORRECT option regarding them.

A Process X is responsible for drying up of puddles and ponds during droughts.
B Process Y is responsible for fogging of bathroom mirror when someone takes hot shower.
C During process X gaseous state of water is converted into liquid state.
D Both processes X and Y are necessary for the completion of water cycle.


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Subject :NSO    Class : Class 4

A group of four students wrote the following statements :
Rima : Not all leaves are green.
Riya : The roots of all plants are below the ground.
Rohan : Plant parts work together to enable the plant to grow well.
Rohit : Leaves can come in different shapes, sizes and colours.
Which of the following students wrote the correct statements ?

ARima, Riya & Rohan
BRohan & Rohit
CRima, Rohan & Rohit
DAll of them


how is Rima correct ?

Ans 1:

Class : Class 6

Ans 2:

Class : Class 7
because non green plants like "Indian pipe" are not in green. and they absorb their food from dead plants and animals

Ans 3:

Class : Class 5
but all plants have roots below the ground

Ans 4:

Class : Class 8
Cuz every tree does not have to be evergreen Dum Dum!! Deciduous trees, tidal trees, and many more don’t have all green leaves!!! Evergreen trees do not shed their leaves and so look green throughout the year, but other non-always green trees shed their leaves and are not always GREEN !!!got it?

Ans 5:

Class : Class 4

Ans 6:

Class : Class 7
Mangroves have aerial roots!

Ans 7:

Class : Class 8
No mangoves have roots above the ground I am talking to you Radiant

Ans 8:

Class : Class 4
Because Riya's statement says that all roots are below the ground but the roots of mangroves are above the ground

Ans 9:

Class : Class 4

Ans 10:

Class : Class 6

Ans 11:

Class : Class 4

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Subject :NSO    Class : Class 8

Ans 1:

Class : Class 9
The process of irrigating the fields by long pipes which have holes so that the water drips drop by drop directly at the roots is called drip irrigation.

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Subject :NSO    Class : Class 4

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Subject :NSO    Class : Class 4

Ans 1:

Class : Class 3
the answer can c or d.why cant it be c. pleas explain

Ans 2:

Class : Class 6
d

Ans 3:

Class : Class 6
D only

Ans 4:

Class : Class 8
D

Ans 5:

Class : Class 8

Ans 6:

Class : Class 9
The answer is option D

Ans 7:

Class : Class 7
Its answer is option D because saliva is mainly water and it contains enzimes that softnes our food and makes it easier to shallow

Ans 8:

Class : Class 7
D is correct as saliva is mainly water, helps makes it easier for us to swallow our food and softens our food so I got correct answer you people can also check in the solution......😄

Ans 9:

Class : Class 4
I agree with LavanyaIt should be D!

Ans 10:

Class : Class 5
Why is the answer D ??

Ans 11:

Class : Class 7
IT should be B as tongue makes it easier to swallow food but it can be D too PLS. explain

Ans 12:

Class : Class 8
d!

Ans 13:

Class : Class 4
D

Ans 14:

Class : Class 8
why d please explain

Ans 15: (Master Answer)

Class : Class 1

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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 5
Ans.-B

Ans 2:

Class : Class 7
D

Ans 3:

Class : Class 7
D

Ans 4:

Class : Class 6
The 5th number from the left is '6'. Therefore, 'S' is the thirteenth letter. The answer is B.

Ans 5:

Class : Class 3
The Answer is B

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Subject :NSO    Class : Class 7

Ans 1:

Class : Class 7
Option-B

Ans 2:

Class : Class 6

Ans 3:

Class : Class 7
Option-B

Ans 4:

Class : Class 7
ISNT IT C?

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Subject :NSO    Class : Class 7

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Subject :NSO    Class : Class 7

Ans 1:

Class : Class 7
D

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