Country captured as NULL and “null”

1. blog.askiitians.com:: When user fills this form, country should get captured .For this in mobile number field, put same thing as in askiitians home page (contact field)[AP1]
2. http://www.askiitians.com/ops-bms/add-paid-user.aspx:: Add country as separate field in this form

[AP1]Need to check feasibility, also need efforts from design

Total number of structural isomers of 
[Co(NH₃)₆][Cr(CN)₆]

Why is boiling point of Cesium higher than that of Rubidium

 

which isomer mentioned in (a) is water soluble and why?

A gaseous mixture contains CO2 and CO the mass of the mixture is 200g and they are presenting equal fraction of moles . Find the total no. of O-atoms present in the mixture.