Examlex
Which of the following statements about substitution reactions is true?
It's
A contraction of "it is" or "it has," used in a sentence to make a statement or indicate possession.
Been
A past participle of the verb "be," indicating a state of existence or occurrence in the past.
You're
You're is a contraction for "you are."
Set
A collection of distinct objects, considered as an object in its own right in mathematics, or the scenery for a film or theater production.
Q7: Which of the following statements about the
Q11: Which of the following statements about a
Q15: Rank the conformers of 1,2,4-trimethylcyclohexane in order
Q20: What is the alternate chair conformation of
Q21: What type of bond cleavage takes place
Q34: What is the correct assignment of the
Q41: Rank the following dienes in order of
Q48: What is the major product obtained from
Q54: Which of the following compounds has a
Q56: What is the approximate value of the