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CBSE->Std 7 Questions

Total Questions 1434
who invented map
who invented rocket
who invented poster
who invented clock
who invented bottle
who invented duster
who invented calculater
who invented pencil
who invented pen
who invented mobile
who invented gramaphone
who invented teliphone
WHO INVENTED HELICOPTER
WHO INVENTED AIROPLANE
who invented chair
who invented fan
who invented bulb
who invented headset
who invented calender
who invented dishnarry