National Science Olympiad Forum By SOF Olympiad Trainer - Page 619
  1. Home
  2. /  Forum

User Forum

Ask Your Question
Aniket Hedde from Podar International School, Nanded
Subject :NSO    Class : Class 8

Ans 1: (Master Answer)

Admin from revisewise, Noida
Class : Class 1

The correct answer is D

The electonic configuration of manganese (atomic number=25) is 1s2 2s2 2p6 3s2 3p6 3d5 4s2


Post Your Answer

Neha Sharma from St Patricks, Bhatinda
Subject :NSO    Class : Class 4

Post Your Answer

Arnav Raj Sharma from The gulibilium school, Gurgaon
Subject :NSO    Class : Class 6

Ans 1:

SOUVAGYA SAHA from De Nobili School, DHANBAD
Class : Class 10
here all the statements are wrong except 3rd statement

Ans 2:

Ridit Mishra from Narachana Higher Secondary School Sama, Vadodara
Class : Class 10
Option A is Wrong

Ans 3:

Manvi Mundepi from Montfort School Roorkee, Roorkee
Class : Class 9
I WANT EXPLAINATION

Ans 4:

Shourya Ganesh from The Green Acres Academy, Mumbai
Class : Class 9
Statement 4 is wrong because hibernation is done to escape cold weather not hot , so SOF is wwwwwwwwwwrrrrrrrrrrrrrrrrrrrooooooooooooooonnnnnnnnnnnnnnnngggggggggggggggggggg

Ans 5:

Medha Bijjaram from Prime Academy, Mumbai
Class : Class 9

Ans 6:

Goldilocks from Sharada Mandir School, Miramar, Panjim, Goa, Panjim Goa
Class : Class 8
none of the answers are correct

Ans 7:

SOUVAGYA SAHA from De Nobili School, DHANBAD
Class : Class 10
here , statement 1 , 3

Ans 8:

Iba khan from DPS GBN, Noida
Class : Class 6
none of the options are correct as the only correct statement mentioned here is (ii)

Ans 9:

KEERTHANA SHIBU from INDIAN SCHOOL GHOUBRA, Oman
Class : Class 7
sof wrong ans there should be option like:only ii is correct

Ans 10:

Vidwat Amal from Podar International School , Anand
Class : Class 8
statement 4 is wrong and none of the options is correct as response of plants towards earth is called geotropism

Ans 11:

Dipam from Podar International School, Aurangabad
Class : Class 8
YES The correct answer is (A).

Ans 12:

Daksh Kumar from GCIS, Bangalore
Class : Class 7
THE CORRECT ANSWER IS A

Ans 13:

Ridit Mishra from Narachana Higher Secondary School Sama, Vadodara
Class : Class 10

Ans 14:

Karthik from Euro, Bengaluru
Class : Class 7
sof is wwwwwwwwwwwwwwwwwwwrrrrrrrrrrrrrrrrrrrrrrrrrroooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooonnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnngggggggggggggggggggggggggggggggggggggggggggg

Ans 15:

Ridit Mishra from Narachana Higher Secondary School Sama, Vadodara
Class : Class 10
Yes none of the options are correct

Ans 16:

Shuvangi Das from Vivekananda mission school, haldia
Class : Class 9
option 4 if wrong. pls Chk soF other thn that all are correct .

Ans 17:

Goldilocks from Sharada Mandir School, Miramar, Panjim, Goa, Panjim Goa
Class : Class 8
Okay manvi

Ans 18:

Sanskar Jaiswal from Rungta Public School, Bhilai
Class : Class 9
bot

Ans 19:

santosh katiyar from narayana vidhyalayam, Nagpur
Class : Class 7
THE CORRECT ANSWER IS (A)

Ans 20:

Aarya Singh from Indian School Ghubra, Muscat
Class : Class 3
none of the options are correct

Ans 21:

MInnal Senthil from Prakriya, Bangalore
Class : Class 5
not a because The response of plant towards the sun is called phototropism

Ans 22:

Parshti Bajpai from Modern Public School, ALWAR
Class : Class 7
Hibernation is done in winters not summers so OPTION A IS CORRECTTTTTT

Ans 23:

Snigdha swaminath from Christ nagar higher secondary school , Trivandrum
Class : Class 7
The answer is wrong

Ans 24:

Ridit Mishra from Narachana Higher Secondary School Sama, Vadodara
Class : Class 10
According to me Statement 2 is correct

Post Your Answer

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

Ans 1:

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

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:

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

Ans 4:

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 5:

Arnav Raj Sharma from The gulibilium school, Gurgaon
Class : Class 9
The Options Are wrong I guess because only (i),(ii)and(iii) are in use

Ans 6:

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

Ans 7:

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

Post Your Answer

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.


Post Your Answer

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

Post Your Answer

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.


Post Your Answer

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.


Post Your Answer

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

Ans 1:

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

Ans 2:

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

Ans 3:

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

Ans 4:

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

Ans 5:

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

Ans 6:

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

Ans 7:

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

Ans 8:

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 9:

RISHABH from SUMMER FIELD, GURGAON
Class : Class 5
c

Ans 10:

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

Ans 11:

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

Ans 12:

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

Ans 13:

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

Ans 14:

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

Post Your Answer

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

Ans 1:

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

Ans 2:

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

Ans 3:

Saatviki from Ryan International School, PUNE
Class : Class 6

Ans 4:

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

Post Your Answer