can i put my adsense code in my friends's blogger account, as we are partners in his blog. We blog unitedly. Is it against Google TOS.
Yes, why not. You can add your adsense to your friend's blog as long as he has a google adsense account.
Yes you can if he is willing to do that but just make sure that he won't do anything that can harm your account.
I have done so in the past and never had any problems. Just makes sure its not XXX stuff or anything..