Engineering Entrance Exams Question: What is the common name of cis- dichloro Dicyano platinate? Engineering Entrance Exams Interview QuestionAnswer: cis-platin Previous QuestionNext QuestionHow a student should prepare for gate examsI wrote letters to four different people and wrote their addresses on four envelopes. But while inserting each letter into an envelope. I was careless. Either I put three letters in right envelopes, or I put two letters in right envelopes or I put one letter in wrong envelope, what did I do?