Pronunciation exercises: /dʒ/ vs /tʃ/

/dʒ/ is voiced and /tʃ/ is voiceless.

Minimal pairs
batch - badge; chain - Jane; cherry - Jerry; chest - jest; chin - gin; choice - Joice; choke - joke; choose - jews; etch - edge; march - Marge; rich - ridge; search - surge

/tʃ/ or /dʒ/
Some words spelled with "ch" have an alternate pronunciation with /dʒ/.
 * sandwich: /ˈsænwɪtʃ, ˈsænwɪdʒ/
 * spinach: /ˈspɪnɪtʃ, ˈspɪnɪdʒ/
 * Greenwich /ˈgrɪnɪdʒ, ˈgrɪnɪtʃ, ˈgrenɪtʃ, ˈgrenɪdʒ/
 * Norwich /ˈnɒrɪdʒ, ˈnɒrɪtʃ/


 * Other
 * congratulations /kənˌɡrætʃʊˈleɪʃənz, kənˌɡrætʃəˈleɪʃənz, kənˌɡrædʒəˈleɪʃənz/ The pronunciation with /dʒ/, even if it is recognized by Random House is regarded by some as informal or sloppy.