Question

TEL is a compound used as:
A. antibiotic
B. antiseptic
C. anti knocking
D. antioxidant

Answer 1

According to the question, we should first know the composition of the given compound TEL then we have to check whether which type of compound it is. TEL is used to reducing the knocking in engines and it also increases the gasoline octane rating.

Complete solution:
TEL is a compound used as an anti knocking agent. And, antiknock agents are the compounds included in little amounts (under 1 percent) to engine powers to improve the antiknock ratings of the fuel. Generally added to gasoline to raise its octane value. Higher octane values implies gasoline will touch off at higher temperature and pressure. It also reduces engine knocking and increases the fuel's octane rating. Gasoline is a fuel mixture. High compression internal combustion engines place gasoline under great pressure.
Tetraethyl lead (TEL), additionally spelled tetraethyl lead, an organometallic compound containing the harmful metal lead that for a significant part of the twentieth century was the central antiknock specialist for car fuel, or petroleum. Starting during the 1970s, "leaded fuel" was eliminated, first in the United States and afterward in Europe and around the globe, by virtue of its commitment to lead harming and its obstruction with contamination control gadgets introduced in automobiles. TEL was once a major industrial compound of lead because of its use as an antiknock agent in gasoline, but its use has declined since the mid-1970s owing to environmental restrictions.

Hence,the correct option is (C).

Note: TEL can cause intense or ongoing lead harming whenever inhaled or absorbed through the skin. In fact, the mechanical physicist is generally given kudos for finding the antiknock properties of the compound.