Engineers or architects can be asked to draw a sketch of a bridge-design on a graph sheet or A4 paper to communicate their ideas and scale their drawings.
Architectural sketches are about the communication of ideas. Engineers and architects use hand sketching to clarify elements of the design to the contractor or client.
It should be noted that drawings can also be drawn on a graph sheet or A4 paper to represent the detail before it's eventually constructed.
Scale drawings are used for the illustration of items that are not convenient to draw their actual size. In the construction industry, scales are used depending on the nature of the drawing. Drawings can be made on a graph or A4 paper due to the ease of printing, reproducing, and resizing the drawings.
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Answer:
(d) Ammonia
Explanation:
When ammonia is kept at very high pressure and low temperature then its turns into liquid state but nitrogen and hydrogen is in gases state so we can easily find hydrogen as a byproduct from ammonia
Ammonia is considered as one of the primary candidate for the production of hydrogen
So option (d) will be correct option