National Science Olympiad Forum By SOF Olympiad Trainer - Page 594

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Subject :NSO    Class : Class 6

Ans 1:

Class : Class 8
Okay manvi

Ans 2:

Class : Class 7
THE CORRECT ANSWER IS (A)

Ans 3:

Class : Class 10
here , statement 1 , 3

Ans 4:

Class : Class 7
sof is wwwwwwwwwwwwwwwwwwwrrrrrrrrrrrrrrrrrrrrrrrrrroooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooonnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnngggggggggggggggggggggggggggggggggggggggggggg

Ans 5:

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

Ans 6:

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

Ans 7:

Class : Class 8
According to me Statement 2 is correct

Ans 8:

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

Ans 9:

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

Ans 10:

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

Ans 11:

Class : Class 9
bot

Ans 12:

Class : Class 8
none of the answers are correct

Ans 13:

Class : Class 8
Option A is Wrong

Ans 14:

Class : Class 8
Yes none of the options are correct

Ans 15:

Class : Class 7
THE CORRECT ANSWER IS A

Ans 16:

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

Ans 17:

Class : Class 7
The answer is wrong

Ans 18:

Class : Class 9

Ans 19:

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

Ans 20:

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

Ans 21:

Class : Class 8

Ans 22:

Class : Class 9
I WANT EXPLAINATION

Ans 23:

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

Ans 24:

Class : Class 3
none of the options are correct

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Subject :NSO    Class : Class 8

Ans 1:

Class : Class 8

Ans 2:

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

Ans 3:

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

Ans 4:

Class : Class 7
The Options Are wrong I guess because only (i),(ii)and(iii) are in use

Ans 5:

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.

Ans 6:

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

Ans 7:

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

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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 1
Wanna explain why?

Ans 2:

Class : Class 5
c

Ans 3:

Class : Class 5

Ans 4:

Class : Class 5
c

Ans 5:

Class : Class 5
c

Ans 6:

Class : Class 5
mechanical,kinetic (c)

Ans 7:

Class : Class 7
Mechanical into kinetic energy.

Ans 8:

Class : Class 5
mechanical into kinectic

Ans 9:

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

Ans 10:

Class : Class 5
actually it is written wrong

Ans 11:

Class : Class 7
C.Mechanical, Kinetic

Ans 12:

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 13:

Class : Class 5
Hey, anyone wants to explain to me why it is option C?

Ans 14:

Class : Class 9
Mechanical,kinetic

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Subject :NSO    Class : Class 2

Ans 1:

Class : Class 6

Ans 2:

Class : Class 5
D;none of these

Ans 3:

Class : Class 1
The correct answer is d.

Ans 4:

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

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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
Snakes can peel their skin of while the others can’t

Ans 2:

Class : Class 1
Only this question I got wrong

Ans 3:

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

Ans 4:

Class : Class 9

Ans 5:

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 6:

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

Ans 7:

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 8:

Class : Class 1
Google says lizards have scales.

Ans 9:

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

Ans 10:

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

Ans 11:

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

Ans 12:

Class : Class 5
Ans is C

Ans 13:

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

Ans 14:

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

Ans 15: (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.


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