WorksheetsOrganic Chemistry Unit I
Total questions: 17
Worksheet time: 14mins
Isomerism that arises out of the difference in spatial arrangement of atoms or groups about the doubly bonded carbon atoms are called? (In specific)
Structural Isomerism
Stereo Isomerism
Geometrical Isomerism
Optical Isomerism
Which among the following defines Meso forms of isomers
Meso form is optically inactive due to external compensation
The molecules of the meso isomers are chiral
It can be separated into optically active enantiometric pairs
It is a single compound
Isomers with similar groups on the same side are called as ” trans” isomers. State true or false
True
False
Which of the following is the definition of chirality?
The superimposability of an object on its mirror image
A molecule with a mirror image
The non-superimposability an object on its mirror image
A molecule that has a carbon atom with four different substituents
Which of the following compound(s) is/are chiral?
Only A and B
Only B
Only B and C
Only A
Which symmetry element makes the given compound achiral?
Plane of symmetry (POS)
Center of symmetry (COS)
Axis of symmetry (AOS)
Alternating Axis of symmetry (AAOS)
The given compound is a chiral molecule.
True
False
Which of the following compound(s) is/are achiral?
I
II
III
both I and II
The sufficient condition for showing optical activity is _______________
Molecule should have measurable amount of optical activity only
Polarimeter should have capacity of recording low-degree optical activity only
Chirality of molecule as a whole only
Both, the molecule should have measurable amount of optical activity and polarimeter should have capacity of recording low-degree optical activity
How many optical isomers are possible in a compound with one chiral carbon?
5
4
2
3
Optical activity is the property in which a substance is unable to rotate the plane of polarisation
True
False
Select the correct statement from the following option.
Meso compound possess both plane of symmetry and centre of symmetry
Meso compound possess either plane or centre of symmetry
Meso compound does not possess either plane or centre of symmetry
Meso compounds are externally compensated form
For a molecule with two like chiral carbon atoms, the number of optically inactive form is?
1
2
3
4
Select the incorrect statement from the following option.
Racemic modification is an equimolar mixture of dextrorotatory and levorotatory isomers
Meso compounds contain more than one chiral carbon centre
Meso compounds are externally compensated
Racemic mixture is designated as dl-pair
What is the correct term for a 50:50 mixture of two enantiomers?
Cis/Trans Mixture
Mirror Image Mixture
Chiral Mixture
Racemic Mixture
Which of the following definitions of an asymmeric reaction is the most accurate?
A reaction that creates a new chiral centre in the product
A reaction that involves a chiral reagent.
A reaction which creates a new chiral centre with selectivity for one enantiomer/diasatereoisomer over another.
A reaction that is carried out on an asymmetric starting material
Which of the following compounds is achiral?
