This winsome mentoring book is specially published for the aspirants of CRA–Customer Relation Assistant (Accounts/Office/Stores Assistant Fire Inspector & Other Non-Technical Posts) Recruitment Exam organised by the Delhi Metro Rail Corporation (DMRC).The book contains ample amount of Study and Practice Material comprising numerous MCQs with Answers and Explanations wherever necessary. All the Relevant & Important chapters & topics are covered in the book in a Reader-friendly manner.Based on the