National Science Olympiad Forum By SOF Olympiad Trainer - Page 635

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Subject :NSO    Class : Class 6

Ans 1:

Class : Class 9
option 4 if wrong. pls Chk soF other thn that all are correct .

Ans 2:

Class : Class 7
THE CORRECT ANSWER IS (A)

Ans 3:

Class : Class 10
Option A is Wrong

Ans 4:

Class : Class 7
sof is wwwwwwwwwwwwwwwwwwwrrrrrrrrrrrrrrrrrrrrrrrrrroooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooonnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnngggggggggggggggggggggggggggggggggggggggggggg

Ans 5:

Class : Class 7
THE CORRECT ANSWER IS A

Ans 6:

Class : Class 10
According to me Statement 2 is correct

Ans 7:

Class : Class 6
none of the options are correct as the only correct statement mentioned here is (ii)

Ans 8:

Class : Class 8
none of the answers are correct

Ans 9:

Class : Class 9
Statement 4 is wrong because hibernation is done to escape cold weather not hot , so SOF is wwwwwwwwwwrrrrrrrrrrrrrrrrrrrooooooooooooooonnnnnnnnnnnnnnnngggggggggggggggggggg

Ans 10:

Class : Class 9
I WANT EXPLAINATION

Ans 11:

Class : Class 10
Yes none of the options are correct

Ans 12:

Class : Class 10

Ans 13:

Class : Class 7
The answer is wrong

Ans 14:

Class : Class 8
YES The correct answer is (A).

Ans 15:

Class : Class 10
here all the statements are wrong except 3rd statement

Ans 16:

Class : Class 9
bot

Ans 17:

Class : Class 8
statement 4 is wrong and none of the options is correct as response of plants towards earth is called geotropism

Ans 18:

Class : Class 8
Okay manvi

Ans 19:

Class : Class 5
not a because The response of plant towards the sun is called phototropism

Ans 20:

Class : Class 3
none of the options are correct

Ans 21:

Class : Class 7
sof wrong ans there should be option like:only ii is correct

Ans 22:

Class : Class 7
Hibernation is done in winters not summers so OPTION A IS CORRECTTTTTT

Ans 23:

Class : Class 9

Ans 24:

Class : Class 10
here , statement 1 , 3

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Subject :NSO    Class : Class 8

Ans 1:

Class : Class 8

Ans 2:

Class : Class 8
The Options Are wrong because only 123 are in use.

Ans 3:

Class : Class 8
It's not asking about which properties occur (which would be all of them), it's asking which are in use. And that's only 1, 2, and 3. So the options are wrong

Ans 4:

Class : Class 9
The Options Are wrong I guess because only (i),(ii)and(iii) are in use

Ans 5:

Class : Class 8
The Options Are wrong because only 123 are in use.

Ans 6:

Class : Class 8
All the properties friction are in use. Hence, the correct one option 'D'.

Ans 7:

Class : Class 7
The answer is correct, as when friction occurs, obviously, all of its properties will occur, even if not all of the properties are required. That's... how friction works.

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Subject :NSO    Class : Class 8

Ans 1: (Master Answer)

Class : Class 1

The correct answer is C.


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Subject :NSO    Class : Class 3

Ans 1:

Class : Class 6
B) 2 and 3

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Subject :NSO    Class : Class 7

Ans 1: (Master Answer)

Class : Class 1

Mass is the amount of matter present in an object whereas weight is the force exerted by the gravity on that object.

Now, the weight of an object, W = g X m, where 'g' is Earth's gravitational constant and 'm' is the mass of the object.

The weight of the object will remain constant as long as the mass of that object is not changing since 'g' is constant. However, the weight of an object can still be changed without changing the mass. This can be explained by the following example: Consider a helicopter with a mass, 'm'.

1. If the helicopter is accelerated towards the earth (during landing) with an acceleration equals to 'A' (positive acceleration) then its weight would become, W = (g + A) X m,  and hence, the weight would increase.

2.  If the helicopter is accelerated away from the earth (during take-off) with an acceleration equals to '- A' (negative acceleration) then its weight would become, W = (g - A) X m,  and hence, the weight would decrease.


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Subject :NSO    Class : Class 7

Ans 1: (Master Answer)

Class : Class 1

Mass is the amount of matter present in an object whereas weight is the force exerted by the gravity on that object.

Now, the weight of an object, W = g X m, where 'g' is Earth's gravitational constant and 'm' is the mass of the object.

The weight of the object will remain constant as long as the mass of that object is not changing since 'g' is constant. However, the weight of an object can still be changed without changing the mass. This can be explained by the following example: Consider a helicopter with a mass, 'm'.

1. If the helicopter is accelerated towards the earth (during landing) with an acceleration equals to 'A' (positive acceleration) then its weight would become, W = (g + A) X m,  and hence, the weight would increase.

2.  If the helicopter is accelerated away from the earth (during take-off) with an acceleration equals to '- A' (negative acceleration) then its weight would become, W = (g - A) X m,  and hence, the weight would decrease.


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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 5
c

Ans 2:

Class : Class 5
c

Ans 3:

Class : Class 7
Hey, anyone wants to explain to me why it is option C?

Ans 4:

Class : Class 5
Its option (c), mechanical into kinetic

Ans 5:

Class : Class 5
mechanical,kinetic (c)

Ans 6:

Class : Class 5
actually it is written wrong

Ans 7:

Class : Class 7
C.Mechanical, Kinetic

Ans 8:

Class : Class 1
Wanna explain why?

Ans 9:

Class : Class 6
In the options, it is written wrong because it is mechanical , kinetic energy. Instead of that it should be muscular, kinetic energy

Ans 10:

Class : Class 9
Mechanical,kinetic

Ans 11:

Class : Class 5

Ans 12:

Class : Class 5
mechanical into kinectic

Ans 13:

Class : Class 7
Mechanical into kinetic energy.

Ans 14:

Class : Class 5
c

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Subject :NSO    Class : Class 2

Ans 1:

Class : Class 1
The correct answer is d.

Ans 2:

Class : Class 5
D;none of these

Ans 3:

Class : Class 3
Mahi from Icon School Of Excellence, BengaluruClass:2D;none of these

Ans 4:

Class : Class 6

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Subject :NSO    Class : Class 5

Ans 1: (Master Answer)

Class : Class 1

The correct answer is A.


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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 9
The correct answer is CRhinoceros does not have scales on body

Ans 2:

Class : Class 5
The correct answer is CRhinoceros doesn't have scales on their body while snake, lizard and fish have scales as body coveing

Ans 3:

Class : Class 9
Snakes can peel their skin of while the others can’t

Ans 4:

Class : Class 1
Honestly, if you ask me,I chose snake as the answer because they can peel of their skin while the others can’t. So,Arumolzhi Ramesh I was thinking the same thing. But SOF and most of you guys say that the correct answer is C Rhinoceros as they do not have scales while the other three do. So it must be correct although I did not know lizards had scales on their bodies but as a matter of fact, they do so C must be the correct answer.

Ans 5:

Class : Class 9
Snake, lizard and fish have scales as body covering while rhinoceros doesn't. Hence the correct answer is C

Ans 6:

Class : Class 5
I ticked the answer as D because fish have gills but the others dont

Ans 7:

Class : Class 4
Do lizards really have scales? I don't think so.

Ans 8:

Class : Class 1
Only this question I got wrong

Ans 9:

Class : Class 7
Correct is c because rhino does not have scales while others do

Ans 10: (Master Answer)

Class : Class 1

The correct answer is C.

Rhinoceros does not have scales on body while snake, lizard and fish have scales as body covering.


Ans 11:

Class : Class 6
Ans is C

Ans 12:

Class : Class 1
Google says lizards have scales.

Ans 13:

Class : Class 9

Ans 14:

Class : Class 5
I chose snake too, so Biju Pappachan and Arumolzhi Ramesh, I have the same thought process- it sheds its skin.

Ans 15:

Class : Class 9
The correct answer is CRhinoceros does not have scales on body while snake, lizard and fish have scales as body covering

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