Organic Chemistry

Q. How does the presence of a +M group affect the stability of a carbocation?
  • A. Increases stability
  • B. Decreases stability
  • C. No effect
  • D. Depends on the solvent
Q. How many isomers does C4H10 have?
  • A. 1
  • B. 2
  • C. 3
  • D. 4
Q. How many isomers does C5H12 have?
  • A. 2
  • B. 3
  • C. 4
  • D. 5
Q. Identify the group that shows a -I effect.
  • A. -NH2
  • B. -CH3
  • C. -F
  • D. -OCH3
Q. Identify the IUPAC name for the compound with the structure CH3-CH(CH3)-C(CH3)2-CH2-CH3.
  • A. 2,3-Dimethylpentane
  • B. 3,3-Dimethylpentane
  • C. 2-Methylhexane
  • D. 3-Methylhexane
Q. Identify the IUPAC name for the compound with the structure CH3-CH(CH3)-C(CH3)2-COOH.
  • A. 3-Methylbutanoic acid
  • B. 2-Methylbutanoic acid
  • C. 3,3-Dimethylbutanoic acid
  • D. 2,3-Dimethylbutanoic acid
Q. In which of the following cases does the mesomeric effect dominate over the inductive effect?
  • A. Aromatic compounds
  • B. Aliphatic compounds
  • C. Alkynes
  • D. Alkenes
Q. In which of the following compounds does the inductive effect play a significant role?
  • A. Benzene
  • B. Acetic acid
  • C. Cyclohexane
  • D. Ethylene
Q. What are the building blocks of nucleic acids?
  • A. Amino acids
  • B. Fatty acids
  • C. Nucleotides
  • D. Monosaccharides
Q. What is denaturation of proteins?
  • A. The process of protein synthesis
  • B. The loss of protein function due to structural changes
  • C. The formation of peptide bonds
  • D. The folding of proteins into their functional shape
Q. What is the basic building block of proteins?
  • A. Nucleotides
  • B. Fatty acids
  • C. Amino acids
  • D. Monosaccharides
Q. What is the basic structural unit of proteins?
  • A. Nucleotide
  • B. Monosaccharide
  • C. Amino acid
  • D. Fatty acid
Q. What is the basic unit of nucleic acids?
  • A. Amino acid
  • B. Nucleotide
  • C. Monosaccharide
  • D. Fatty acid
Q. What is the basic unit of proteins?
  • A. Nucleotide
  • B. Monosaccharide
  • C. Amino acid
  • D. Fatty acid
Q. What is the boiling point trend among alcohols, ethers, and alkanes?
  • A. Alcohols > Ethers > Alkanes
  • B. Ethers > Alcohols > Alkanes
  • C. Alkanes > Ethers > Alcohols
  • D. All have the same boiling point
Q. What is the bond angle around the carbon atoms in an alkyne?
  • A. 120 degrees
  • B. 180 degrees
  • C. 109.5 degrees
  • D. 90 degrees
Q. What is the effect of -NO2 group on the stability of benzene derivatives?
  • A. Stabilizing
  • B. Destabilizing
  • C. No effect
  • D. Enhancing acidity
Q. What is the effect of a -CF3 group on the stability of a benzene ring?
  • A. Stabilizing
  • B. Destabilizing
  • C. No effect
  • D. Depends on substituents
Q. What is the effect of a -CH3 group on the stability of a carbocation?
  • A. Destabilizes
  • B. No effect
  • C. Stabilizes
  • D. Increases acidity
Q. What is the effect of a -COOH group on the stability of a benzene ring?
  • A. Stabilizing
  • B. Destabilizing
  • C. No effect
  • D. Depends on substituents
Q. What is the effect of a -I group on the acidity of a carboxylic acid?
  • A. Increases acidity
  • B. Decreases acidity
  • C. No effect
  • D. Only affects basicity
Q. What is the effect of a -I group on the acidity of carboxylic acids?
  • A. Increases acidity
  • B. Decreases acidity
  • C. No effect
  • D. Depends on the solvent
Q. What is the effect of a -NO2 group on the stability of a benzene ring?
  • A. Stabilizing
  • B. Destabilizing
  • C. No effect
  • D. Enhances reactivity
Q. What is the effect of alkyl groups on the basicity of amines?
  • A. Decrease basicity
  • B. Increase basicity
  • C. No effect
  • D. Depends on the size
Q. What is the effect of electron-donating groups on the basicity of amines?
  • A. Increase basicity
  • B. Decrease basicity
  • C. No effect
  • D. Depends on the solvent
Q. What is the effect of electron-withdrawing groups on the basicity of amines?
  • A. Increase basicity
  • B. Decrease basicity
  • C. No effect
  • D. Varies with the group
Q. What is the effect of increasing the carbon chain length on the boiling point of aldehydes?
  • A. Decreases
  • B. Increases
  • C. Remains the same
  • D. Varies randomly
Q. What is the effect of increasing the number of carbon atoms in a carboxylic acid on its solubility in water?
  • A. Increases solubility
  • B. Decreases solubility
  • C. No effect
  • D. First increases then decreases
Q. What is the effect of increasing the number of carbon atoms in a carboxylic acid on its acidity?
  • A. Increases acidity
  • B. Decreases acidity
  • C. No effect
  • D. Depends on the structure
Q. What is the effect of increasing the number of carbon atoms in aldehydes on their boiling points?
  • A. Decreases
  • B. Increases
  • C. Remains constant
  • D. Varies unpredictably
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