Question

Coal tar contains about -:
(a) 300 substance
(b) 400 substance
(c) 200 substance
(d) 100 substance

Answer 1

Hint: Coal tar is a thick, black liquid that is produced as a by-product of the coal-to-coke and coal-to-gas conversion process. It has medicinal and industrial applications. It is a topical medicine used to treat psoriasis and seborrheic dermatitis on the skin (dandruff). It can be used with UV light treatment for better results. It is utilized in the paving of roads and as a railway tie preservative in industry. In the inaugural Report on Carcinogens from the United States Federal Government, coal tar was recognized as a known human carcinogen.

Complete Step By Step Answer:
Coal tar includes tens of thousands of compounds, only about half of which have been recognized. One of the most valuable fossil fuels is coal. It has a wide range of uses, including the generation of heat for homes, the firing of industrial generators, the creation of cast iron, and so on. It may also be processed in an industrial setting to produce goods like coke, tar, and coal gas. We can benefit from these by-products as well.
Coal tar is made up of 200 different ingredients. Coal tar is used to make a variety of products, including bitumen. Petroleum, like gasoline, diesel, gasoline, and superfine petroleum, is a combination of several different chemicals. It's the same way; it's made up of a variety of different components. In the past, coal tar was used to coat roads, but now we use bitumen instead of coal tar. This is due to the fact that coal tar is a combination of many different chemicals, but bitumen is not. So, if you use coal tar, you're mixing many chemicals together, but if you use bitumen, you're just mixing one substance at a time.
Option (c) is correct.

Note:
Skin inflammation, UV sensitivity, allergic responses, and skin discolouration are among side effects of coal tar. It's unknown whether using it during pregnancy is healthy for the infant, and it's not usually advised to take it while breastfeeding. The specific mechanism of action has yet to be discovered. It consists of phenols, polycyclic aromatic hydrocarbons (PAHs), and heterocyclic chemicals in a complicated combination. Antifungal, anti-inflammatory, anti-itch, and antiparasitic activities have been discovered in it.