Answer:
See explanation
Explanation:
Biphenyl is formed by the reaction of two phenyl radicals. It is a major impurity ( undesired product) that is formed when some amount of phenyl bromide (bromobenzene) doesn't react solid magnesium in the formation of the Gignard reagent. In other words, it is formed when there is a coupling reaction between Grignard reagent (Grignard reagent acts as a strong nucleophile) and bromobenzene
Biphenyl is usually produces when the concentration of bromobenzene is high and when there is increase in temperature during reaction. To minimize the amount of biphenyl, it is best to add the bromobenzene solution slowly so that the reaction boils gently, since the reaction is favorable at low temperatures.
Far too frequently we engage in small talk without becoming involved in the conversation, since it only concerns unimportant matters, as stated in option D.
<h3>What is small talk?</h3>
Small talk is the kind of conversation we have when we do not know the other person well. It is often carried out in places such as the bus, the subway, a bank line, etc. Small talk concerns unimportant matters, such as:
- How crowded the place is.
We do not really become involved in the conversation when we carry out a small talk. The purpose is usually to pass the time or to simply avoid boredom or awkwardness. Most of the time, it is not our purpose to actually get to know that person well.
With the information above in mind, we can select option D as the correct answer.
The missing answer choices for this question are:
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The correct answer is <span>18 to 25. This is sometimes referred to as the young adult period because it's where people start becoming people and their puberty ends and they mature both psychologically and physically. You stop growing and your personality slowly starts establishing. This is an especially difficult period for teens and ends in this age.</span>
