Organic Chemistry: Basic Principles and Techniques
Each subtopic includes About section, revision page link, 10 preview questions, and practice CTAs.
IUPAC Nomenclature
SubtopicIUPAC Nomenclature under Organic Chemistry: Basic Principles and Techniques for Grade 11 ICSE.
Preview questions (no answers)
- 1.
Identify the IUPAC name for the alkyl halide .
A.Iodoethane
B.Iodomethane
C.Methyl iodide
D.Diiodomethane
- 2.
What is the IUPAC name for the compound ?
A.But-1-ene
B.But-1,3-diene
C.But-2-ene
D.But-1,2-diene
- 3.
Which functional group is designated by the IUPAC suffix '-nitrile'?
A.B.C.D. - 4.
What is the IUPAC name for the simplest carboxylic acid, ?
A.Ethanoic acid
B.Propanoic acid
C.Methanoic acid
D.Formic acid
- 5.
Name the polyfunctional compound following IUPAC rules.
A.3-hydroxybutanal
B.4-hydroxybutanal
C.3-hydroxybutan-1-one
D.2-hydroxybutanal
- 6.
What is the IUPAC name of ?
A.3-methylpent-2-ene
B.3-methylpent-3-ene
C.2-ethylbut-2-ene
D.Isohexene
- 7.
Select the IUPAC name for .
A.2,2-dimethylpropanal
B.3,3-dimethylpropanal
C.Pivalaldehyde
D.2-methylbutanal
- 8.
Give the IUPAC name for the unsaturated alkyne .
A.2-methylpent-1-en-3-yne
B.4-methylpent-4-en-2-yne
C.2-methylpent-1-yne-3-ene
D.4-methylpent-2-yn-4-ene
- 9.
What is the IUPAC name for the alkane ?
A.2,2,4-trimethylpentane
B.2,4,4-trimethylpentane
C.Isooctane
D.2,2-dimethyl-4-methylpentane
- 10.
Identify the IUPAC name for .
A.3-chloropent-4-en-2-ol
B.3-chloro-4-penten-2-ol
C.2-hydroxy-3-chloropent-4-ene
D.4-chloro-2-hydroxypent-4-ene
Download the worksheet for Organic Chemistry: Basic Principles and Techniques - IUPAC Nomenclature to practice offline. It includes additional chapter-level practice questions.
Isomerism (Structural and Stereo)
SubtopicIsomerism (Structural and Stereo) under Organic Chemistry: Basic Principles and Techniques for Grade 11 ICSE.
Preview questions (no answers)
- 1.
The separation of a racemic mixture into d and l forms is called:
A.Racemization
B.Resolution
C.Dehydration
D.Distillation
- 2.
The process of converting an optically active compound into a racemic mixture is called:
A.Resolution
B.Racemization
C.Substitution
D.Elimination
- 3.
Which of the following statements about enantiomers is FALSE?
A.They have the same boiling point
B.They have the same melting point
C.They rotate plane-polarized light in the same direction
D.They have the same chemical properties towards achiral reagents
- 4.
Which of the following is a pair of position isomers?
A.n-Butane and Isobutane
B.1-Chloropropane and 2-Chloropropane
C.Ethanol and Dimethyl ether
D.Diethyl ether and Methyl propyl ether
- 5.
In symmetrical polyenes such as Hexa-2,4-diene (), the total number of geometrical isomers is affected by the internal symmetry of the molecule. Referencing the symmetry and the potential configurations at the double bonds illustrated in the diagram, what is the total number of geometrical isomers possible for this compound?
A.3
B.4
C.2
D.5
- 6.
When two hydrogen atoms in a benzene ring are replaced by two chlorine atoms, the resulting compound is Dichlorobenzene (). Based on the positional distribution possibilities for the chlorine atoms shown in the flowchart, how many distinct structural isomers can be formed for this compound?
A.2
B.4
C.3
D.6
- 7.
Identify the number of secondary alcohol isomers for the molecular formula .
A.1
B.2
C.3
D.4
- 8.
Which of the following is a pair of metamers?
A.and
B.and
C.and
D.and
- 9.
Which of the following compounds has the highest percentage of enol content in its pure liquid state?
A.Acetone
B.Acetylacetone
C.Ethyl acetoacetate
D.Acetaldehyde
- 10.
In 1,2-dimethylcyclopropane, how many stereoisomers exist?
A.2
B.3
C.4
D.None
Download the worksheet for Organic Chemistry: Basic Principles and Techniques - Isomerism (Structural and Stereo) to practice offline. It includes additional chapter-level practice questions.
Inductive, Electromeric, and Resonance Effects
SubtopicInductive, Electromeric, and Resonance Effects under Organic Chemistry: Basic Principles and Techniques for Grade 11 ICSE.
Preview questions (no answers)
- 1.
The displacement of electrons in the Inductive effect is:
A.Complete
B.Partial
C.Temporary
D.Reversible only in presence of light
- 2.
Which of the following electronic effects is purely a temporary effect?
A.Inductive effect
B.Mesomeric effect
C.Electromeric effect
D.Hyperconjugation
- 3.
Which of the following is NOT a characteristic of resonance structures?
A.They are imaginary
B.They have the same energy
C.They differ in the position of atoms
D.They contribute to the real structure
- 4.
When a cyanide ion () attacks a bond, the -electrons shift towards Oxygen. This is an example of:
A.effect
B.effect
C.effect
D.effect
- 5.
What is the direction of the Inductive effect in the bond of a Grignard reagent ()?
A.Toward the Carbon atom (Carbon is )
B.Toward the Magnesium atom (Magnesium is )
C.No inductive effect exists in this bond.
D.Electron density is shared equally.
- 6.
Which effect is responsible for the higher acidity of -nitrophenol compared to phenol?
A.Only effect of
B.Only effect of
C.Both and effects of
D.effect of
- 7.
The effect of the following groups follows the order:
A.B.C.D. - 8.
Compare the bond lengths in ethane, ethene, and ethyne. Which effect best explains the bond shortening as unsaturation increases?
A.Change in hybridization and -character of the carbon atoms
B.The inductive effect of the hydrogen atoms
C.The resonance energy of the triple bond
D.The electromeric effect during bond vibration
- 9.
Which of the following effects leads to the 'meta-directing' nature of the group in Nitrobenzene?
A.A combination of -R and -I effects that creates positive charge at ortho and para positions
B.A +R effect that increases electron density at the meta position
C.An electromeric effect that stabilizes the meta-transition state
D.A +I effect that pushes electrons to the meta position
- 10.
Identify the compound with the most acidic hydrogen among the following.
A.Acetylene
B.Ethene
C.Ethane
D.Benzene
Download the worksheet for Organic Chemistry: Basic Principles and Techniques - Inductive, Electromeric, and Resonance Effects to practice offline. It includes additional chapter-level practice questions.
Purification of Organic Compounds
SubtopicPurification of Organic Compounds under Organic Chemistry: Basic Principles and Techniques for Grade 11 ICSE.
Preview questions (no answers)
- 1.
Which of the following can be used to detect colorless spots on a chromatography paper?
A.Visible light
B.Infrared radiation
C.UV light
D.Carbon dioxide
- 2.
The method used to separate sugar from a mixture of sugar and common salt using ethanol is based on:
A.Difference in boiling points
B.Difference in solubilities
C.Difference in densities
D.Difference in rate of sublimation
- 3.
Which technique is used to purify naphthalene contaminated with non-volatile impurities?
A.Distillation
B.Sublimation
C.Extraction
D.Fractionation
- 4.
During crystallization, cooling should be done:
A.Extremely fast in ice water
B.Slowly to allow large, pure crystals to form
C.By blowing air over the solution
D.While stirring vigorously
- 5.
Which component in a chromatography setup is referred to as the 'Stationary Phase'?
A.The solvent that moves up the plate.
B.The mixture being separated.
C.The material (solid or liquid) that remains fixed in place.
D.The developing chamber.
- 6.
Which of the following is true about the vapor pressure of a mixture in steam distillation?
A.It is the difference between the vapor pressures of the two components.
B.It is always equal to 760 mm Hg regardless of temperature.
C.It is the sum of the vapor pressures of water and the organic liquid.
D.It depends only on the vapor pressure of the organic liquid.
- 7.
In the process of differential extraction, the efficiency of extraction increases with:
A.Decreasing the temperature.
B.Increasing the number of extractions with smaller volumes.
C.Decreasing the surface area of contact.
D.Using a solvent that has a higher boiling point than the solute.
- 8.
During the purification of an organic liquid by distillation, what does a sudden increase in the thermometer reading after a constant plateau indicate?
A.The first component has completely distilled over
B.The heating mantle has malfunctioned
C.The condenser has stopped working
D.The liquid in the flask has reached its freezing point
- 9.
Which of the following mixtures forms a minimum boiling azeotrope?
A.Water and Nitric Acid
B.Water and Hydrochloric Acid
C.Benzene and Ethanol
D.Chloroform and Acetone
- 10.
In chromatography, the term 'Dead Volume' refers to:
A.The volume of the stationary phase
B.The volume of the mobile phase outside the column
C.The total volume of the mobile phase in the column between the point of injection and detection
D.The volume of the sample injected
Download the worksheet for Organic Chemistry: Basic Principles and Techniques - Purification of Organic Compounds to practice offline. It includes additional chapter-level practice questions.