Here we will provide you the 50+ MCQ Questions of Organic Chemistry Some Basic Principles and Techniques for NEET-UG. Organic Chemistry Some Basic Principles and Techniques is the chapter 3 in Class XI or Class 11 Chemistry NCERT Unit Organic Chemistry Some Basic Principles and Techniques NEET (conducted by NTA) is based on the NCERT book.
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Organic Chemistry Some Basic Principles and Techniques NEET MCQ
Which of the following is an example of a tertiary alcohol?
a. 2-propanol
b. 1-propanol
c. 2-butanol
d. 1-butanol
Which of the following statements about electrophiles is correct?
a. Electrophiles are electron-rich species.
b. Electrophiles are attracted to negatively charged atoms or molecules.
c. Electrophiles donate electrons to form a bond.
d. Electrophiles accept electrons to form a bond.
Which of the following statements about the SN1 reaction mechanism is correct?
a. It involves a one-step process.
b. It proceeds with inversion of configuration.
c. It requires a strong nucleophile.
d. It is a second-order reaction.
Which of the following is an example of a secondary amine?
a. ethylamine
b. trimethylamine
c. methylamine
d. diethylamine
Which of the following statements about stereoisomers is correct?
a. They have the same physical and chemical properties.
b. They have different physical and chemical properties.
c. They have the same molecular formula but different structural formulas.
d. They have the same structural formula but different functional groups.
Which of the following is an example of an SN2 reaction?
a. E1
b. E2
c. SN1
d. SN2
Which of the following statements about chirality is correct?
a. Chiral molecules have a plane of symmetry.
b. Chiral molecules are not superimposable on their mirror images.
c. Chiral molecules have an internal mirror plane.
d. Chiral molecules are achiral.
Which of the following statements about boiling points of organic compounds is correct?
a. Boiling point increases with increasing molecular weight.
b. Boiling point decreases with increasing molecular weight.
c. Boiling point decreases with increasing branching.
d. Boiling point increases with increasing branching.
Which of the following statements about aldehydes and ketones is correct?
a. Aldehydes have a carbonyl group at the end of a carbon chain.
b. Ketones have a carbonyl group at the end of a carbon chain.
c. Aldehydes have a carbonyl group in the middle of a carbon chain.
d. Ketones have a carbonyl group in the middle of a carbon chain.
Which of the following is an example of an enantiomer?
a. glucose
b. fructose
c. sucrose
d. alanine
Which of the following statements about SN1 and SN2 reactions is correct?
a. SN1 reactions are favored by polar protic solvents, while SN2 reactions are favored by polar aprotic solvents.
b. SN1 reactions are favored by polar aprotic solvents, while SN2 reactions are favored by polar protic solvents.
c. Both SN1 and SN2 reactions are favored by polar protic solvents.
d. Both SN1 and SN2 reactions are favored by polar aprotic solvents.
Which of the following statements about the acidity of carboxylic acids is correct?
a. Carboxylic acids are more acidic than alcohols.
b. Carboxylic acids are less acidic than alcohols.
c. Carboxylic acids are more acidic than phenols.
d. Carboxylic acids are less acidic than phenols.
Which of the following statements about SN1 and SN2 reactions is correct?
a. SN1 reactions proceed with retention of configuration, while SN2 reactions proceed with inversion of configuration.
b. SN1 reactions proceed with inversion of configuration, while SN2 reactions proceed with retention of configuration.
c. Both SN1 and SN2 reactions proceed with retention of configuration.
d. Both SN1 and SN2 reactions proceed with inversion of configuration.
Which of the following statements about resonance is correct?
a. Resonance structures differ in the placement of atoms.
b. Resonance structures have different hybridizations.
c. Resonance structures have the same energy.
d. Resonance structures contribute equally to the true structure of the molecule.
Which of the following is an example of an aromatic compound?
a. cyclohexane
b. benzene
c. ethene
d. propane
Which of the following statements about the reduction of carbonyl groups is correct?
a. The reduction of ketones produces primary alcohols.
b. The reduction of aldehydes produces secondary alcohols.
c. The reduction of ketones produces secondary alcohols.
d. The reduction of aldehydes produces primary alcohols.
Which of the following is an example of an alkyne?
a. butene
b. propene
c. ethyne
d. ethene
Which of the following statements about aromatic compounds is correct?
a. Aromatic compounds contain alternating single and double bonds.
b. Aromatic compounds are highly reactive.
c. Aromatic compounds have a planar structure.
d. Aromatic compounds are not stable.
Which of the following statements about the reactivity of alkenes is correct?
a. Alkenes are more reactive than alkanes.
b. Alkenes are less reactive than alkanes.
c. Alkenes are more reactive than alkynes.
d. Alkenes are less reactive than alkynes.
Which of the following statements about enantiomers is correct?
a. Enantiomers have identical physical properties.
b. Enantiomers rotate plane-polarized light in opposite directions.
c. Enantiomers have different boiling points.
d. Enantiomers have the same biological activity.
Which of the following statements about the addition of HX to an alkene is correct?
a. The addition of HX to an alkene proceeds with anti-Markovnikov selectivity.
b. The addition of HX to an alkene proceeds with Markovnikov selectivity.
c. The addition of HX to an alkene proceeds with syn-selectivity.
d. The addition of HX to an alkene proceeds with anti-selectivity.
Which of the following statements about the ozonolysis of alkenes is correct?
a. The ozonolysis of alkenes always produces a single product.
b. The ozonolysis of alkenes always produces two products.
c. The ozonolysis of alkenes produces different products depending on the nature of the substituents.
d. The ozonolysis of alkenes does not produce any products.
Which of the following statements about the stereochemistry of the Diels-Alder reaction is correct?
a. The Diels-Alder reaction always proceeds with syn-selectivity.
b. The Diels-Alder reaction always proceeds with anti-selectivity.
c. The stereochemistry of the Diels-Alder reaction depends on the nature of the diene and dienophile.
d. The Diels-Alder reaction does not have stereochemistry.
Which of the following statements about Fischer projections is correct?
a. Fischer projections are used to represent the three-dimensional structure of a molecule on a two-dimensional plane.
b. Fischer projections are used to represent the two-dimensional structure of a molecule on a three-dimensional plane.
c. Fischer projections are used to represent the two-dimensional structure of a molecule on a two-dimensional plane.
d. Fischer projections are used to represent the three-dimensional structure of a molecule on a three-dimensional plane.
Which of the following is an example of a secondary alcohol?
a. 1-propanol
b. 2-propanol
c. 1-butanol
d. 2-butanol
Which of the following statements about the SN2 reaction is correct?
a. The SN2 reaction proceeds with inversion of configuration.
b. The SN2 reaction proceeds with retention of configuration.
c. The SN2 reaction does not have stereochemistry.
d. The SN2 reaction proceeds with racemization of configuration.
Which of the following statements about the acidity of phenols is correct?
a. Phenols are more acidic than carboxylic acids.
b. Phenols are less acidic than carboxylic acids.
c. Phenols are more acidic than alcohols.
d. Phenols are less acidic than alcohols.
Which of the following statements about nucleophiles is correct?
a. Nucleophiles are electron-deficient species.
b. Nucleophiles are electron-rich species.
c. Nucleophiles have a positive charge.
d. Nucleophiles have a neutral charge.
Which of the following statements about the Grignard reagent is correct?
a. The Grignard reagent is a strong acid.
b. The Grignard reagent is a strong base.
c. The Grignard reagent is a strong nucleophile.
d. The Grignard reagent is a strong electrophile.
Which of the following statements about the Williamson ether synthesis is correct?
a. The Williamson ether synthesis is an SN1 reaction.
b. The Williamson ether synthesis is an SN2 reaction.
c. The Williamson ether synthesis is an elimination reaction.
d. The Williamson ether synthesis is an addition reaction.
Which of the following statements about enols is correct?
a. Enols are less stable than their corresponding ketones or aldehydes.
b. Enols are more stable than their corresponding ketones or aldehydes.
c. Enols have a double bond between a carbon and an oxygen atom.
d. Enols have a double bond between a carbon and a nitrogen atom.
Which of the following statements about carboxylic acids is correct?
a. Carboxylic acids are more acidic than aldehydes.
b. Carboxylic acids are less acidic than aldehydes.
c. Carboxylic acids are more acidic than alcohols.
d. Carboxylic acids are less acidic than alcohols.
Which of the following statements about the Claisen condensation reaction is correct?
a. The Claisen condensation reaction is an addition reaction.
b. The Claisen condensation reaction is a substitution reaction.
c. The Claisen condensation reaction is an elimination reaction.
d. The Claisen condensation reaction is a condensation reaction.
Which of the following statements about the Wittig reaction is correct?
a. The Wittig reaction is an elimination reaction.
b. The Wittig reaction is an addition reaction.
c. The Wittig reaction is a substitution reaction.
d. The Wittig reaction is a condensation reaction.
Which of the following statements about the Cannizzaro reaction is correct?
a. The Cannizzaro reaction is an oxidation-reduction reaction.
b. The Cannizzaro reaction is a condensation reaction.
c. The Cannizzaro reaction is an elimination reaction.
d. The Cannizzaro reaction is a disproportionation reaction.
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