WORLD HISTORY

INTER WAR YEARS 1919 TO 1939

NAZISM IN GERMANY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which two synthetic materials were made from coal?
A
Rubber and oil
B
Rubber and Coal
C
Oil and Coal
D
None of the above
Explanation: 

Detailed explanation-1: -SYNTHETIC. Crude oil is the principal raw material in synthetic rubber. Approximately 70% of all rubber used today is synthetic.

Detailed explanation-2: -Among the most important synthetic rubbers are butadiene rubber, styrene-butadiene rubber, neoprene, the polysulfide rubbers (thiokols), butyl rubber, and the silicones.

Detailed explanation-3: -Natural rubber is polyisoprene in which monomer units are of isoprene i, e 2-methyl-1, 3 butadiene. Natural rubber is obtained in the form of solid particles suspended in a milky white liquid (called latex) that drips from the bark of certain tropical and subtropical trees. Neoprene is a synthetic rubber.

Detailed explanation-4: -Synthetic rubber is any man-made elastomer. They’re polymers made from petroleum byproducts. Synthetic rubber, like natural rubber, has several applications in the automobile sector, including tyres, door and window profiles, seals such as O-rings and gaskets, hoses, belts, matting, and flooring.

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