National Science Olympiad Forum By SOF Olympiad Trainer

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Subject :NSO    Class : Class 4

Ans 1:

Class : Class 5
I thought the answer is c

Ans 2:

Class : Class 4
YES D

Ans 3:

Class : Class 5
A hand blender runs on electricity. When it is switched on, its blades rotate and a sound is also produced as the motor starts. Thus, electrical energy changes into kinetic energy and sound energy.

Ans 4:

Class : Class 4
D

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Subject :NSO    Class : Class 6

Ans 1:

Class : Class 6
it is d not c

Ans 2:

Class : Class 4
C is NOT THE ANSWER

Ans 3:

Class : Class 6
C no.

Ans 4:

Class : Class 6
not cit is b

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Subject :NSO    Class : Class 3

Ans 1:

Class : Class 7
It's wrong because Football is an outdoor game and chess is an indoor game so the ans is "C"

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Subject :NSO    Class : Class 2

Ans 1:

Class : Class 2
oggy

Ans 2:

Class : Class 2
it is a corn not a bottle gourd so it should be a!

Ans 3:

Class : Class 2
A bottle gourd is a climber not a creeper. so the answer should be- D

Ans 4:

Class : Class 6
The ans,shoud be d

Ans 5:

Class : Class 2
A bottle gourd is a climber. So D option is correct

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Subject :NSO    Class : Class 7

Ans 1:

Class : Class 7
A

Ans 2:

Class : Class 8
It is not.It is carbon dioxide.(a)

Ans 3:

Class : Class 7
it should be carbon dioxide (CO2)

Ans 4:

Class : Class 6
it must be carbon dioxide

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Subject :NSO    Class : Class 2

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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 3
The student is studying soil erosion. The top soil collected is maximum, so it is easily eroded. Answer- A. Top soil is easily eroded.

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Subject :NSO    Class : Class 4

Three uniform planks, P, Q and R are balanced on pivots. Two equal forces, each of value F, act on each plank but in different manners as shown in the figure.Which of the following options is correct regarding this?


APlank P will either bend or break.
BPlank Q will show no movement at all.
CPlank R will be pulled up the pivot.
DPlank P will show no movement at all.


if equal is being applied on Q....on the left lower and right upper end.... wont it balance out and not make Q move? How is option B correct?

Ans 1:

Class : Class 4
The correct answer is D

Ans 2:

Class : Class 4
B

Ans 3:

Class : Class 4
answer is d

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Subject :NSO    Class : Class 6

Read the statements regarding the given food web and select the option that consists of all correct statements.

(i) There are 7 interconnected food chains in the given food web.
(ii) Snake and fox serve as top consumers in the given food web.
(iii) Snake serves as primary, secondary as well as tertiary consumer in the given food web.
(iv) If populations of rat and rabbit are removed from this community then populations of snake and fox will be equally affected negatively.
(v) There are four primary consumers and two secondary consumers in the given food web.
(vi) If the populations of top consumers are removed from this food web then populations of all primary consumers of web will decline.

A(iv) and (v) only
B(i), (iii) and (v) only
C(i) and (ii) only
D(ii), (iv) and (vi) only


The answer should be - d

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Subject :NSO    Class : Class 4

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