National Science Olympiad Forum By SOF Olympiad Trainer - Page 592

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Subject :NSO    Class : Class 6

Ans 1:

Class : Class 8
none of the answers are correct

Ans 2:

Class : Class 7
sof is wwwwwwwwwwwwwwwwwwwrrrrrrrrrrrrrrrrrrrrrrrrrroooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooonnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnngggggggggggggggggggggggggggggggggggggggggggg

Ans 3:

Class : Class 9

Ans 4:

Class : Class 7
The answer is wrong

Ans 5:

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

Ans 6:

Class : Class 7
THE CORRECT ANSWER IS A

Ans 7:

Class : Class 8

Ans 8:

Class : Class 8
Option A is Wrong

Ans 9:

Class : Class 8
According to me Statement 2 is correct

Ans 10:

Class : Class 3
none of the options are correct

Ans 11:

Class : Class 9
bot

Ans 12:

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

Ans 13:

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

Ans 14:

Class : Class 10
here , statement 1 , 3

Ans 15:

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

Ans 16:

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

Ans 17:

Class : Class 7
THE CORRECT ANSWER IS (A)

Ans 18:

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

Ans 19:

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

Ans 20:

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

Ans 21:

Class : Class 9
I WANT EXPLAINATION

Ans 22:

Class : Class 8
Okay manvi

Ans 23:

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

Ans 24:

Class : Class 8
Yes none of the options are correct

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Subject :NSO    Class : Class 8

Ans 1:

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

Ans 2:

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

Ans 3:

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 4:

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 5:

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

Ans 6:

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

Ans 7:

Class : Class 8

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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

Ans 3:

Class : Class 1
Wanna explain why?

Ans 4:

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

Ans 5:

Class : Class 5
actually it is written wrong

Ans 6:

Class : Class 5
c

Ans 7:

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

Ans 8:

Class : Class 7
C.Mechanical, Kinetic

Ans 9:

Class : Class 5
mechanical into kinectic

Ans 10:

Class : Class 5
c

Ans 11:

Class : Class 7
Mechanical into kinetic energy.

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 9
Mechanical,kinetic

Ans 14:

Class : Class 5
mechanical,kinetic (c)

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Subject :NSO    Class : Class 2

Ans 1:

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

Ans 2:

Class : Class 5
D;none of these

Ans 3:

Class : Class 6

Ans 4:

Class : Class 1
The correct answer is d.

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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
Google says lizards have scales.

Ans 3:

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 4:

Class : Class 5
Ans is C

Ans 5:

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

Ans 6:

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 7:

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

Ans 8:

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

Ans 9:

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

Ans 10:

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 11:

Class : Class 9

Ans 12:

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

Ans 13:

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

Ans 14:

Class : Class 1
Only this question I got wrong

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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