National Science Olympiad Forum By SOF Olympiad Trainer - Page 285

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Subject :NSO    Class : Class 4

Ans 1:

Class : Class 7

Ans 2: (Master Answer)

Class : Class 1

C

The animal shown here is polar bear. They have a fat layer under skin and a layer of fur over it to protect them from cold.


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Subject :NSO    Class : Class 7

Ans 1:

Class : Class 8

Ans 2:

Class : Class 7
why isn't the answer a that cutting wood can be a physical change (dead tree) and a chemical change ( all chemical reactions have stopped )

Ans 3:

Class : Class 7

Ans 4:

Class : Class 8
The answer is Option C.. Because burning of candle is both physical and chemical change(melting of wax could be assumed as physical change and the burning of the thread can be assumed as chemical change.. Also, sublimation of wax also takes place and can be classified as physical change.)

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Subject :NSO    Class : Class 7

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Subject :NSO    Class : Class 8

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Subject :NSO    Class : Class 4

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Subject :NSO    Class : Class 4

Ans 1: (Master Answer)

Class : Class 1

D

There two 'S' in the word 'COSMOS' so, 'COSMOS' cannot be made from the given word.


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Subject :NSO    Class : Class 4

Ans 1:

Class : Class 7

Ans 2:

Class : Class 8

Ans 3: (Master Answer)

Class : Class 1

B

Tweezers are third class lever whereas see-saw, crowbar and scissors are first class levers.


Ans 4:

Class : Class 2
The person called admin is correct

Ans 5:

Class : Class 8
Admin is correct

Ans 6:

Class : Class 7
I think that he/she is.

Ans 7:

Class : Class 5
What are first class levers and second class levers?

Ans 8:

Class : Class 5
snow white are you too selected this year 2020-2021

Ans 9:

Class : Class 7
Well, why don't they teach all this stuff in the synopsis?!They should, but, Admin from revisewise is correct.

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Subject :NSO    Class : Class 5

Ans 1: (Master Answer)

Class : Class 1

B

 Embankment is built on the banks of the river. It stops the water of the river from flooding the fields.


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Subject :NSO    Class : Class 7

Ans 1:

Class : Class 8
plastic is a bad conductor then it would be C

Ans 2:

Class : Class 8
I agree.

Ans 3:

Class : Class 7
Plastic is not a good conductor of heat. So how should the answer be A?

Ans 4:

Class : Class 8
True plastic is a BAD CONDUCTOR but it’s not an INSULATOR right? So possibly it would naturally take some time .

Ans 5:

Class : Class 8
I agree with Srijan Anand !!!

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Subject :NSO    Class : Class 7

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