In the prevailing school system, students are found to give more emphasis on recitation rather than understanding the Original Concept. But, School-Level Competitive Examinations, in future most of the Career Deciding Examinations and Pre-Entrance Examinations for Higher Education are of Multiple Choice and Negative Marking system, so the students get confused there. After the recitation, even Litmus Paper is Blue or Red that too gets wrong at times.
After learning anything, if students perform it Practically, it will be remembered forever and students will not get confused while Answering.