They can be frozen, you can buy frozen scallops. I would thaw them gently first as if you cook them from frozen the outside may well become overcooked.
Yes, you can, flobadob - but be cautious, because they may well already be frozen when you buy them, and defrosted. It'll tell you on the packaging if they are not to be frozen a second time.
Since you can buy them frozen it's possible. But do not pour hot water over them as soon as you decide to cook the frozen once. Put them in cold water and defrost only in this way.
yes you can
they frequently come frozen from chinese supermarkets
yeah agreed above - I wouldnt freeze again
and blimey no I wouldnt cook from frozen
as they are usually seared in Chinese cookery, and searing aint sudduv good for coking frozen fude