Start learning →

What is the hardest anatomical tissue in the human body that coats the crown of teeth?

ATooth enamel
BBone compact
CDentin tissue
DDental cement
Answer & Solution
Correct answer: A. Tooth enamel
Enamel consists of highly mineralised calcium phosphate and represents the hardest substance in humans.
Practise this question with Quill — RRB NTPC →

Keep practising Science & Technology

Browse all Science & Technology questions for RRB NTPC, or explore more Science topics.

Start a Science & Technology lesson →