Q1 Easy
Phenol is more acidic than aliphatic alcohols because:
A Phenol has a lower molecular weight B The phenoxide ion is stabilized by resonance with the benzene ring C Phenol contains more hydroxyl groups D Phenol has a higher boiling point
Q2 Easy
Which reagent is commonly used to distinguish between primary and secondary alcohols?
A Bromine water B Potassium permanganate (acidic) C Sodium metal D Tollens reagent
Q3 Easy
Which hydrocarbon shows the phenomenon of isomerism first appearing in its series?
A Methane (C₁) B Ethane (C₂) C Propane (C₃) D Butane (C₄)
Q4 Easy
What is the IUPAC name of the compound with structure CH₃OCH₂CH₃?
A Methyl ethyl ether B Methoxyethane C Ethyl methyl ether D 1-Methoxypropane
Q5 Easy
What is the IUPAC name of the compound CH3-CH2-CH2-CH3?
A Butane B Propane C Pentane D Isobutane
Q6 Easy
Which of the following represents a primary alcohol?
A CH3CH2OH B CH3CH(OH)CH3 C (CH3)3COH D CH3CH2CH(OH)CH3
Q7 Easy
What is the general molecular formula for alkanes?
A CₙH₂ₙ₊₂ B CₙH₂ₙ C CₙH₂ₙ₋₂ D CₙHₙ
Q8 Easy
What is the IUPAC name of the hydrocarbon with the structure CH₃-CH₂-CH₂-CH₃?
A Methane B Propane C Butane D Pentane
Q9 Easy
Which of the following compounds is classified as a primary alcohol?
A CH₃CH₂OH B (CH₃)₂CHOH C (CH₃)₃COH D C₆H₅OH
Q10 Easy
Which of the following haloalkanes undergoes SN2 reaction most readily?
A CH₃CH₂CH₂Br (primary) B (CH₃)₂CHBr (secondary) C (CH₃)₃CBr (tertiary) D CH₂=CHBr (vinyl)
Q11 Easy
What is the IUPAC name of the compound CH₃CHBrCH₂CH₃?
A 2-bromobutane B 1-bromobutane C 3-bromobutane D 2-bromopropane
Q12 Easy
Which haloarene is most resistant to nucleophilic aromatic substitution?
A Chlorobenzene (C₆H₅Cl) B p-Nitrochlorobenzene (4-NO₂-C₆H₄Cl) C p-Methoxychlorobenzene (4-CH₃O-C₆H₄Cl) D p-Chlorobenzaldehyde (4-CHO-C₆H₄Cl)
Q13 Easy
In the reaction of 1-bromobutane with KOH in alcoholic solution, the major product is:
A 1-butanol (substitution) B 1-butene (elimination) C 2-butene (elimination) D Butane (reduction)
Q14 Easy
Which of the following statements about haloarenes is correct?
A The C-X bond in haloarenes is longer than in haloalkanes B Haloarenes undergo nucleophilic substitution more readily than haloalkanes C The C-X bond in haloarenes is stronger than in haloalkanes D Haloarenes are more polar than haloalkanes
Q15 Easy
Identify the functional group present in CH3COCH3.
A Aldehyde B Ketone C Alcohol D Carboxylic acid
Q16 Easy
Which pair of compounds represents isomers?
A CH3CH2OH and CH3OCH3 B CH4 and C2H6 C CH3CH2CH3 and CH3CH(CH3)2 D C2H4 and C3H6
Q17 Easy
Which of the following is an example of an alkene?
A Ethane (C₂H₆) B Ethene (C₂H₄) C Ethyne (C₂H₂) D Methane (CH₄)
Q18 Easy
How many sigma (σ) and pi (π) bonds are present in a molecule of ethyne (C₂H₂)?
A 2 σ bonds and 1 π bond B 3 σ bonds and 2 π bonds C 4 σ bonds and 0 π bonds D 1 σ bond and 3 π bonds
Q19 Easy
What is the general formula for alkanes?
A CnH2n+2 B CnH2n C CnH2n-2 D CnHn
Q20 Easy
The dehydration of ethanol (C₂H₅OH) with concentrated H₂SO₄ at 170°C produces:
A Diethyl ether B Acetaldehyde C Ethene D Acetic acid