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Which of the following acids shows stereoisomerism?
Tartaric acid contains two asymmetric carbon atoms, leading to the existence of stereoisomers. It exists in three stereoisomeric forms: dextro, levo, and meso. Acetic acid, oxalic acid, and formic acid do not have any asymmetric carbon atoms, hence they do not exhibit stereoisomerism.
A racemic mixture is a mixture of:
(b) A mixture of 50-50% of d and its l form is called racemic mixture.
Compounds which rotate plane polarised light clockwise direction are known as:
(a) A characteristic of dextrorotatory.
Glucose and fructose are:
(c) Glucose has aldehyde group and fructose keto group. The general formula for both is C6H12O6.
Which is optically active?
(d) CH3CHClCOOH contains asymmetric carbon atom.
Which is incorrect about enantiomorphs?
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(c) CH3 has sp2-hybridized carbon.
The isomeric cis-2-butene and trans-2-butene can be distinguished on the basis of:
(d) The two butenes give different products on addition of Br2. cis butene gives racemic mixture whereas trans butene gives meso form of 2,3-dibromo butene.
How many optically active forms are possible for a compound of the formula,
CHO.CHOH.CHOH.CHOH.CH2OH?
(d) a = 2n; n=3
Isomers which can be interconverted through rotation around a single bond are:
(a) The definition of conformation.
a-D-(+)-glucose and β-D-(+)-glucose are :
α-D-(+)-glucose and β-D-(+)-glucose are anomers. Anomers are stereoisomers that differ in the configuration around a specific carbon atom, typically the anomeric carbon atom in carbohydrates. They have the same molecular formula but different spatial arrangements.
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