Questions

Water containing caustic soda cannot be used for drinking

Hard disk is coated in both side with Magnetic metallic oxide.

The biggest concern is the cost incurred for test automation. Also, often s/w test automation requires skilled personnel and authentic test automation tools. Purchasing license of such tools is a costly affair.

Also the time required for test automation is more. Automation often requires recording the sequence of operations you need to perform in order to execute a particular test case and comparing the final o/p with the expected o/p. Functions/macros need also be written sometimes for some test cases. All this could be a time consuming job. 

World Population day is an annual event, observed on July 11 every year, which seeks to raise awareness of global population issues.