Number of correct statements is/are  
i)  $I_2{O}_5$ is very good oxidising agent and is used in the estimation of carbonmonoxide.
ii) Catalyst in Deacon’s process is  $CuC{l}_2$
iii) Chlorine bleaches vegetable or organic matter in presence of moisture. 
iv) HCl used for extracting glue from bone and purifying bone black 
v) ICl – ruby red solid in $\alpha$  - form 
 - brown red solid in  $\beta$ - form 
vi) Percentage of chlorine in tear gas is 25%
vii) $I{F}_7$  is solid