The spelling should be hyphenated "hands-on" (involving active participation).
You can have a short spell or a long spell. e.g. * My husband had a short spell in Egypt during the war, when he was in the army. * His brother had a long spell in prison for being a conscientious objector. However, a spell is usually a short period of time. e.g. We had a spell of bad weather during our spring break.
bare hands
Cowhand's
You cannot.
hands = les mains
The shorter form to spell incorporated is 'Inc'.
Co.
The verb is spelled "applaud" (clap hands, congratulate).
Info is short for information
The short answer here is no.
C. or Ch.