When are the prefixes ortho, meta, and para used?
Correct answer: C. In arenes to identify the position second substituition
- A. In alkynes to identify the position of triple bond
- B. In arenes to identify the position first substitution
- C. In arenes to identify the position second substituition
- D. In all hydrocarbons to identify the position of functional group
Explanation
Ortho, para, and meta are prefixes used to designate the relative positions of second substituent groups on an aromatic ring in organic chemistry. Specifically, the prefixes ortho, meta, and para indicate the positions of two substituents on a benzene ring relative to each other. Ortho refers to the positions 1 and 2, meta refers to positions 1 and 3, and para refers to the positions 1 and 4.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
About Benzene and Aromatic Compounds
Benzene has a planar ring of delocalised π electrons, giving aromatic stability and equal carbon-carbon bond lengths. The topic covers resonance, electrophilic substitution reactions such as nitration, halogenation, sulphonation and Friedel-Crafts reactions, along with substituent effects and the distinction between substitution in benzene and addition in ordinary alkenes.
Practise Chemistry of Hydrocarbons
1,091 free Chemistry of Hydrocarbons MCQs from Chemistry, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Chemistry questions like this
Chemistry is on 14 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
More Benzene and Aromatic Compounds questions
When CH3 is attached to the benzene ring, it makes the ring a:
Electrophile in sulphonation of benzene is:
Acetophenone can be formed by which of the following reaction of benzene?
When the two substitutions are different in arenes, they are put in which of the following order?
Which of the following is true about arenes?
Which of the following reactions are not given by Benzene?