National Science Olympiad Forum By SOF Olympiad Trainer - Page 460

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Subject :NSO    Class : Class 4

Ans 1:

Class : Class 6
D

Ans 2:

Class : Class 8
D

Ans 3:

Class : Class 8
YES D

Ans 4:

Class : Class 6
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 5:

Class : Class 7

Ans 6:

Class : Class 7

Ans 7:

Class : Class 5
Thank You Swarit

Ans 8:

Class : Class 5
I thought the answer is c

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Subject :NSO    Class : Class 6

Ans 1:

Class : Class 8
C is NOT THE ANSWER

Ans 2:

Class : Class 6
B

Ans 3:

Class : Class 6
it is d not c

Ans 4:

Class : Class 9
THERE IS NO CORRECT ANSWER IN THIS QUESTION!!!!!!

Ans 5:

Class : Class 6
It should be B

Ans 6:

Class : Class 1
Actually this ques. is wrong becuz there couldn't be a change with the properties of physical and chemical.

Ans 7:

Class : Class 7
It should be B

Ans 8:

Class : Class 8
a

Ans 9:

Class : Class 7
There is NO correct answer.

Ans 10:

Class : Class 9
not cit is b

Ans 11:

Class : Class 6
C no.

Ans 12:

Class : Class 9
actually a change cannot be physical and chemical change as Physical : A change in which composition of matter does not change.Chemical : A change in which composition of matter does not change.They are opposite changes.There is no correct answer!

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Subject :NSO    Class : Class 3

Ans 1:

Class : Class 4
WE need to select the incorrect pair. hence answer is D.

Ans 2:

Class : Class 6
why would the answer be d it is c i am sure

Ans 3:

Class : Class 5
Why would the answer be D ?

Ans 4:

Class : Class 4
it is '' C ''

Ans 5:

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

Ans 6:

Class : Class 5
The correct answer cannot be A it will be B

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Subject :NSO    Class : Class 2

Ans 1:

Class : Class 3
oggy

Ans 2:

Class : Class 7
The ans,shoud be d

Ans 3:

Class : Class 2
Yaa it’s bottle gaurd

Ans 4:

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

Ans 5:

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

Ans 6:

Class : Class 5
The answer should be D

Ans 7:

Class : Class 3
it is a corn not a bottle gourd so it should be a!

Ans 8:

Class : Class 6
D OPTION IS CORRECT

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Subject :NSO    Class : Class 7

Ans 1:

Class : Class 9
it must be carbon dioxide

Ans 2:

Class : Class 9
It is not.It is carbon dioxide.(a)

Ans 3:

Class : Class 7
A

Ans 4:

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

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Subject :NSO    Class : Class 2

Ans 1:

Class : Class 5
What will be the position of sun for good afternoon then ?

Ans 2:

Class : Class 5
It will be A.Good evening.

Ans 3:

Class : Class 6

Ans 4:

Class : Class 3
Why not good afternoon. In most of the parts of the world evening is time when sun sets, so practically there won't be any shadow. Also by looking at the picture it looks more around 2-3PM. Good afternoon looks appropriate answer.

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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 8
The student is studying soil erosion. The top soil collected is maximum, so it is easily eroded. Answer- A. Top soil is easily eroded.

Ans 2:

Class : Class 7
LolWrong question.

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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
answer is d

Ans 2:

Class : Class 8
B

Ans 3:

Class : Class 9
The correct 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

Ans 1:

Class : Class 7

Ans 2:

Class : Class 8
i am the god of explanation the two primary consumers are sreeram dps and kanveent kaur

Ans 3:

Class : Class 8

Ans 4:

Class : Class 7

Ans 5:

Class : Class 8
Explanation please.

Ans 6:

Class : Class 7
YOU AS WELL ADVAIT HAHAHAHAHAHAHAHA

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Subject :NSO    Class : Class 4

Ans 1:

Class : Class 5
A

Ans 2:

Class : Class 9
A

Ans 3:

Class : Class 7
a

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