Which of these is a toll-free 24×7 National Helpline Number for corona-virus? HEALTH AND SAFETY AMAZON QUIZ -Which of these is a toll-free 24x7 National Helpline Number for corona-virus? By Mukesh Sharma - May 20, 2021 Options to the question – Which of these is a toll-free 24×7 National Helpline Number for corona-virus? 1097 1040 1088 1075 The correct answer is 1075. Among these, 1075 is a toll-free 24×7 National Helpline Number for corona-virus.