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VAIBHAV KALVAKOTA from THE LEXICON INTERNATIONAL SCHOOL WAGHOLI, PUNE
Subject :NSO    Class : Class 8

Ans 1:

Arnav Raj Sharma from GEMS International School the ultra master mega, Gurgaon
Class : Class 7
The Options Are wrong I guess because only (i),(ii)and(iii) are in use

Ans 2:

Hprakash09 from Billabong high Bhopal, Bhopal
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 3:

Adhrit from CHSV, Chennai
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:

VAIBHAV KALVAKOTA from THE LEXICON INTERNATIONAL SCHOOL WAGHOLI, PUNE
Class : Class 8

Ans 5:

Student from School, City
Class : Class 8
The Options Are wrong because only 123 are in use.

Ans 6:

Student from School, City
Class : Class 8
The Options Are wrong because only 123 are in use.

Ans 7:

Anirudh from Kendriya Vidyalaya Kanjikode, Palakkad
Class : Class 8
All the properties friction are in use. Hence, the correct one option 'D'.

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VAIBHAV KALVAKOTA from THE LEXICON INTERNATIONAL SCHOOL WAGHOLI, PUNE
Subject :NSO    Class : Class 8

Ans 1: (Master Answer)

Admin from revisewise, Noida
Class : Class 1

The correct answer is C.


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shaurya chitriki from delhi public school north, bangalore
Subject :NSO    Class : Class 3

Ans 1:

Mohi from Vibgyor, Bangalore
Class : Class 6
B) 2 and 3

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Dheeraj from Sri Sri Ravishankar Vidya Mandir, Bangalore
Subject :NSO    Class : Class 7

Ans 1: (Master Answer)

Admin from revisewise, Noida
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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Dheeraj from Sri Sri Ravishankar Vidya Mandir, Bangalore
Subject :NSO    Class : Class 7

Ans 1: (Master Answer)

Admin from revisewise, Noida
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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ansh rai from delhi public school, Bhilai
Subject :NSO    Class : Class 5

Ans 1:

shreedhar from the shri ram school, delhi
Class : Class 5
mechanical,kinetic (c)

Ans 2:

Saiprajna Panda from Kendriya Vidyalaya, Central University of rajasthan, Kishangarh
Class : Class 5
actually it is written wrong

Ans 3:

NAISHA JAJWARE from dps noida, noida
Class : Class 5
c

Ans 4:

Biju Pappachan from Rkc , Raipur
Class : Class 1
Wanna explain why?

Ans 5:

Shreetej from Pearson public school, Pune
Class : Class 5
Its option (c), mechanical into kinetic

Ans 6:

Harsh Sobti from the samhita academy, BLR
Class : Class 5

Ans 7:

Niveideeta Cour from Suncity World School, Gurgaon
Class : Class 5
mechanical into kinectic

Ans 8:

RISHABH from SUMMER FIELD, GURGAON
Class : Class 5
c

Ans 9:

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

Ans 10:

Ishani Gandhi from Lourdes convent school, Surat
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 11:

Poulami Dan from Aditya Academi, Kolkata
Class : Class 5
c

Ans 12:

shaurya aggarwal from scholars rosary senior secondary school, rohtak
Class : Class 9
Mechanical,kinetic

Ans 13:

Pratham Dave from GNS, Bangalore
Class : Class 7
Mechanical into kinetic energy.

Ans 14:

Pritisha priya from Global Indian International School, Abu Dhabi, Abu Dhabi
Class : Class 7
C.Mechanical, Kinetic

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swagatika from giis, BENGALURU
Subject :NSO    Class : Class 2

Ans 1:

anu from Haralur, Bengaluru
Class : Class 5
D;none of these

Ans 2:

Ipshita from VIBGYOR, Bengaluru
Class : Class 1
The correct answer is d.

Ans 3:

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

Ans 4:

Saatviki from Ryan International School, PUNE
Class : Class 6

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ansh rai from delhi public school, Bhilai
Subject :NSO    Class : Class 5

Ans 1: (Master Answer)

Admin from revisewise, Noida
Class : Class 1

The correct answer is A.


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Sai srikar from Mitra academy, Bangalore
Subject :NSO    Class : Class 5

Ans 1:

Shreeya Mangla from ASN Senior Secondary School, New Delhi
Class : Class 9
Snake, lizard and fish have scales as body covering while rhinoceros doesn't. Hence the correct answer is C

Ans 2:

VISHNU from NARAYANA OLYMPIAD GOPALAPURAM, chennai
Class : Class 5
I ticked the answer as D because fish have gills but the others dont

Ans 3:

Ashwak from Cambridge, Jalandhar
Class : Class 9
The correct answer is CRhinoceros does not have scales on body

Ans 4:

Ashwak from Cambridge, Jalandhar
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 5:

Nilarka Pahari from Young Horizons School, Kolkata
Class : Class 4
Do lizards really have scales? I don't think so.

Ans 6:

Biju Pappachan from Rkc , Raipur
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 7:

Biju Pappachan from Rkc , Raipur
Class : Class 1
Only this question I got wrong

Ans 8:

Mohhika Sharma from Delhi Public School Greater Noida, Noida
Class : Class 5
I chose snake too, so Biju Pappachan and Arumolzhi Ramesh, I have the same thought process- it sheds its skin.

Ans 9:

Shloka Kulkarni from Pawar Public School, Nanded City, Pune
Class : Class 5
Ans is C

Ans 10:

from harvest,
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 11:

arulmozhi ramesh from Kv, Coimbatore
Class : Class 9

Ans 12:

Biju Pappachan from Rkc , Raipur
Class : Class 1
Google says lizards have scales.

Ans 13:

Arnesh from DPS Mathura Road , New Delhi
Class : Class 7
Correct is c because rhino does not have scales while others do

Ans 14: (Master Answer)

Admin from revisewise, Noida
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 15:

arulmozhi ramesh from Kv, Coimbatore
Class : Class 9
Snakes can peel their skin of while the others can’t

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Ayush Das from Griffins international school , Midnapur
Subject :NSO    Class : Class 4

Ans 1: (Master Answer)

Admin from revisewise, Noida
Class : Class 1
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