Question

2. An element “A” is a gas essential for breathing. This element combines with another
element "B" to form a compound "C" in liquid state which is known as the "Elixir of
life". The same element "A" also combines with another element "D" to form
Ammonia. Identify the elements A,B,C and D. Mention the names of the elements
separately with explanation as points. (4*1 =4)​

Answer 1

Answer:

A- oxygen

B- hydrogen

C- Water

D- Nitrogen