Meso compounds and symmetry from structures

14 questions on Meso compounds and symmetry from structures from the Stereoisomerism chapter: 4 NEET level, 4 JEE Main, 6 JEE Advanced. Each one opens with its answer and solution.

• The compound shown is 2,3-dibromobutane drawn with a definite configuration at both carbons. Which statement about it is correct? NEET level, drawn structure
• Which one of the structures shown is a meso compound? NEET level
• The compound shown is 1,2-dimethylcyclopropane with both methyl groups on the same face of the ring. It is NEET level, drawn structure
• The compound shown is trans-1,4-dimethylcyclohexane. It is optically inactive because NEET level, drawn structure
• The compound shown is one meso stereoisomer of 2,3,4-trichloropentane. Which statement about its central carbon C3 is correct? JEE Advanced level, drawn structure
• Which of the structures shown are meso compounds (achiral in spite of having stereocentres)? JEE Main level
• The compound shown is 1,2-dimethylcyclohexane with both methyl groups drawn on the same face of the ring. Considering configuration only (treat the ring as plan... JEE Main level, drawn structure
• Three of the structures shown are meso compounds. Which one is NOT a meso compound? JEE Main level
• The compound shown is 2,3,4-trichloropentane (no configuration is specified). How many of its stereoisomers are achiral (meso) forms? Give the answer as an inte... JEE Main level, drawn structure
• The compound shown is 1,2,3,4-tetramethylcyclobutane (no configuration specified). Treat the ring as planar and count configurational stereoisomers only. How ma... JEE Advanced level, drawn structure
• The compound shown is one stereoisomer of tartaric acid (2,3-dihydroxybutanedioic acid). Which statements about it are correct? JEE Advanced level, drawn structure
• The compound shown is 1,2-dichloro-3-methylcyclopropane with both chlorine atoms and the methyl group on the same face of the ring. Which statement is correct? JEE Advanced level, drawn structure
• Which one of the structures shown is NOT superimposable on its mirror image? Consider configuration only (treat rings as planar). JEE Advanced level
• The compound shown is one stereoisomer of 2,4-dibromopentane. Which statements are correct? JEE Advanced level, drawn structure