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Question of the Day

Aqua-regia is a mixture of the following in the ratio 1:3 by volume?

  1. conc. HNO3 and conc. HCl
  2. Conc. HCl and conc. HNO3
  3. Conc. HNO3 AND dil. HCl
  4. Dil. HNO3 and dil. H2SO4

QOTD Winners

[05 October 2026]

Nazim Ansari

BIOMEDICAL TECHNIQUES

HUMAN RESPIRATORY SYSTEM

DIGESTIVE GLANDS AND THEIR FUNCTIONS

EXTRACTION OF METALS