Question

Rayon is different from synthetic fibres because:
A. It has a silk appearance
B. It is obtained from wood pulp
C. It can also be woven like those of natural fibres
D. It is natural

Answer 1

Rayon is a regenerated cellulose fiber that is made from natural sources of cellulose, such as wood and related agricultural products. Synthetic fibers are the fibers that are made by the humans through chemical synthesis, as opposed to natural fibers that are directly derived from the living organisms.

Complete step by step answer:
The viscose method of rayon uses the wood as a source of cellulose, whereas other routes to rayon require lignin-free cellulose as a beginning material. The use of woody sources of cellulose makes viscose cheaper, so it was traditionally used on a larger scale than the other methods. On the other hand, the original viscose process generates large amounts of contaminated wastewater. Newer technologies use low amounts of water and have improved the quality of the wastewater.
The synthetic fibres are the result of extensive research by scientists to improve upon naturally occurring animal and plant fibers. In general, synthetic fibers are made by extruding fiber-forming materials through spinnerets, forming a fiber. These are called synthetic or artificial fibers.
Thus, we can compare both of them and deduce the fact that both occur naturally and both of them can be woven as natural fibres. Both of them have a silk like appearance too. The only difference is that the rayon is obtained from wood pulp and the synthetic fiber is extruded from animal and plant fibers.

Thus, the correct option is: B. it is obtained from wood pulp.

Note:
Earlier, rayon was produced only as a filament fiber until the 1930s when methods were developed to utilize broken waste rayon as a staple fiber. Synthetic fibers are created by a process known as polymerization, which involves combining monomers to make a long chain of polymer.