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from , Nanded
Subject :NSO    Class : Class 9

Ans 1:

Sunita Kundu from Scholars rosary senior secondary school , Rohtak
Class : Class 10

Ans 2:

from d.g.v. sr. sec. school, rohtak
Class : Class 9
(D) is correct

Ans 3:

Ankur Kumar from Delhi Public School, Ranchi
Class : Class 9
Option B is wrong . As it is talking of the energy shell. OR might be the question is incorrect as the all the options are correct as per my information.

Ans 4:

Sunita Kundu from Scholars rosary senior secondary school , Rohtak
Class : Class 10
Answer should be either B or c because both of them are incorrect

Ans 5:

Sreyashi Ganguli from Bishop Cotton Girls School, Bengaluru
Class : Class 9
ans should no doubt be c because of the Hund 's rule and also fifth shell does accommodate 50 electrons according to 2n^2 :2*5^2=2*25=50.

Ans 6:

smriti khuntia from apeejay school,nerul, navi mumbai
Class : Class 9
C should be the answer! a- 2*4^2=32. b-the outermost shell always has 8 to gain perfect stability or become a noble gas. c-wrong, filling always starts from the first, second, third, THEN fourth. d-2*5^2=50

Ans 7:

RUDRANSH from Little Angels High School, Gwalior
Class : Class 8

Ans 8:

Aarju Pal from Arambagh Vivekananda Academy, Arambagh
Class : Class 9
(a) is no doubt right, (b) may be wrong, (c) is right and (d) is also right.

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Chaitanya Gawade from JPS, Pune
Subject :NSO    Class : Class 9

Ans 1:

Arnav Bhatnagar from RFS, Navi Mumbai
Class : Class 8

Ans 2:

Ankur Kumar from Delhi Public School, Ranchi
Class : Class 9
Volume of the solid cube =(25*25*25)/1000000 cubic metre. Mass of the solid cube = the mass of the body which can be placed on it to completely submerge it Density = 0.1kg/ 125*(10)^6=800kg/m^3

Ans 3:

Ankur Kumar from Delhi Public School, Ranchi
Class : Class 9
Volume of the solid cube =(25*25*25)/1000000 cubic metre. Mass of the solid cube = the mass of the body which can be placed on it to completely submerge it Density = 0.1kg/ 125*(10)^6=800kg/m^3

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Chaitanya Gawade from JPS, Pune
Subject :NSO    Class : Class 9

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Chaitanya Gawade from JPS, Pune
Subject :NSO    Class : Class 9

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Chaitanya Gawade from JPS, Pune
Subject :NSO    Class : Class 9

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Ajoy Bhuyan from DELHI PUBLIC SCHOOL, Bongaigaon
Subject :NSO    Class : Class 4

Ans 1:

Ajoy Bhuyan from DELHI PUBLIC SCHOOL, Bongaigaon
Class : Class 4

Ans 2:

Kushagra Chaturvedi from Podar International School Chinchwad, Pune
Class : Class 6
THIS IS NOT POSSIBLE!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!Because you can GOOGLE IT.......................................... MY OPINION- Kushagra Chaturvedi

Ans 3:

Kushagra Chaturvedi from Podar International School Chinchwad, Pune
Class : Class 6
Thus ans is c not BBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB

Ans 4:

Kushagra Chaturvedi from Podar International School Chinchwad, Pune
Class : Class 6

Ans 5:

Ajoy Bhuyan from DELHI PUBLIC SCHOOL, Bongaigaon
Class : Class 4
b ans

Ans 6:

Kushagra Chaturvedi from Podar International School Chinchwad, Pune
Class : Class 6
Thus ans is c not BBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB

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Chaitanya Gawade from JPS, Pune
Subject :NSO    Class : Class 9

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Chaitanya Gawade from JPS, Pune
Subject :NSO    Class : Class 9

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Chaitanya Gawade from JPS, Pune
Subject :NSO    Class : Class 9

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ISHANI RAJE from NALANDA PUBLIC SCHOOL, Mumbai
Subject :NSO    Class : Class 7

Ans 1:

Bhagyesh Kamal from DPS, Mumbai
Class : Class 8

Ans 2:

Nivedita Tadepalli from Birla Open Minds International School-Bandlaguda Jagir, Hyderabad
Class : Class 7
how is answer a? I don't understand

Ans 3:

Daksh Thakkar from VIBGYOR, Mumbai
Class : Class 8
ans is a

Ans 4:

Nivedita Tadepalli from Birla Open Minds International School-Bandlaguda Jagir, Hyderabad
Class : Class 7

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