28 public questions tagged with this topic.
Methanol (CH₃OH) has a lower molecular weight (32 g/mol) than ethanol (CH₃CH₂OH, 46 g/mol), reducing van der Waals forces and thus lowering its boiling point.
Ref: NCERT Class 12 Chemistry > Chapter 7: Alcohols, Phenols and Ethers > Topic: Chemical Reactions of Alcohols - Dehydration Oxidation Esterification
Boiling point increases with molecular weight due to stronger London forces. CH₃CH₂I has the highest molecular weight among the options.
Ref: NCERT Class 12 Chemistry > Chapter 6: Haloalkanes and Haloarenes > Topic: Physical Properties - Boiling Point Dipole Moment Solubility
Boiling point decreases with lower molecular weight. CH₃CH₂F has the lowest molecular weight among the options.
Ref: NCERT Class 12 Chemistry > Chapter 6: Haloalkanes and Haloarenes > Topic: Physical Properties - Boiling Point Dipole Moment Solubility
Boiling point decreases with lower molecular weight in alkanes. CH₃CH₃ (ethane, MW 30) has the lowest MW among the options.
Ref: NCERT Class 11 Chemistry > Chapter 8: Organic Chemistry - Some Basic Principles and Techniques > Topic: Fundamental Concepts - Reaction Mechanism - Fission and Reaction Intermediates
Boiling point increases with molecular weight in homologous series. CH₃CH₂CH₂CH₃ (butane, MW 58) has the highest MW among the options.
Ref: NCERT Class 11 Chemistry > Chapter 8: Organic Chemistry - Some Basic Principles and Techniques > Topic: Classification and Nomenclature of Organic Compounds - IUPAC
In NH₃ , hydrogen bonding occurs between the hydrogen of one molecule and the nitrogen lone pair of another, stronger than van der Waals forces in others.
Ref: NCERT Class 11 Chemistry > Chapter 4: Chemical Bonding and Molecular Structure > Topic: Hydrogen Bonding and Resonance and Dipole Moment
In HF , hydrogen bonding between H and F atoms leads to higher boiling points due to strong intermolecular forces.
Ref: NCERT Class 11 Chemistry > Chapter 4: Chemical Bonding and Molecular Structure > Topic: Hydrogen Bonding and Resonance and Dipole Moment
Absence of competing hydrogen bonds accurately identifies the binding site, binding partner, or molecular interaction described in this question. In Chemical Bonding, molecular recognition and binding specificity are governed by complementary shape, charge, and hydrophobic interactions between molecules. Absence of competing hydrogen bonds binds at the specified location due to its structural complementarity and specific non-covalent or covalent interactions. The other options (High entropy of water molecules, Strong ionic interactions, and High dielectric constant) describe binding to different sites, involve different types of molecular interactions, or represent incorrect binding partners.
Ref: Campbell Biology, Urry et al., 12th Ed.
Atomic mass and surface area is the scientifically accurate answer to this question. Within the study of Chemical Bonding, this concept is well-established through extensive research and is documented in standard scientific literature. The specific properties, mechanisms, or characteristics of Atomic mass and surface area directly address what is being asked. Among the other options, Electronegativity, Atomic number, and Molecular polarity do not correctly answer this question because they either refer to different concepts, describe properties of other molecules or processes, or represent common misconceptions about this topic.
Ref: Campbell Biology, Urry et al., 12th Ed.
CH₄ accurately identifies the binding site, binding partner, or molecular interaction described in this question. In Chemical Bonding, molecular recognition and binding specificity are governed by complementary shape, charge, and hydrophobic interactions between molecules. CH₄ binds at the specified location due to its structural complementarity and specific non-covalent or covalent interactions. The other options (NH₃, H₂O, and NaCl) describe binding to different sites, involve different types of molecular interactions, or represent incorrect binding partners.
Ref: Campbell Biology, Urry et al., 12th Ed.
Van der Waals interactions is the scientifically accurate answer to this question. Within the study of Chemical Bonding, this concept is well-established through extensive research and is documented in standard scientific literature. The specific properties, mechanisms, or characteristics of Van der Waals interactions directly address what is being asked. Among the other options, Hydrogen bonding, Covalent bonding, and Ionic bonding do not correctly answer this question because they either refer to different concepts, describe properties of other molecules or processes, or represent common misconceptions about this topic.
Ref: Campbell Biology, Urry et al., 12th Ed.
Folding of proteins accurately identifies the binding site, binding partner, or molecular interaction described in this question. In Chemical Bonding, molecular recognition and binding specificity are governed by complementary shape, charge, and hydrophobic interactions between molecules. Folding of proteins binds at the specified location due to its structural complementarity and specific non-covalent or covalent interactions. The other options (Hydrogen bonding in DNA, Formation of NaCl in water, and Coordination of metal ions) describe binding to different sites, involve different types of molecular interactions, or represent incorrect binding partners.
Ref: Campbell Biology, Urry et al., 12th Ed.
