Free Hydrogen Bonding MCQs with Answers
75 Hydrogen Bonding MCQs from Chemistry, each with the correct answer and a written explanation of why it is correct. Free and unlimited, with no account needed.
Hydrogen bonding is the strong attraction between hydrogen attached to nitrogen, oxygen or fluorine and an electronegative atom in the same or another molecule. It explains unusual boiling points, viscosity, surface tension, water's properties and the difference between intermolecular and intramolecular hydrogen bonding.
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75 questions · page 2 of 4
- A. Chemical bonding
- B. Ion dipole force
- C. Dipole-dipole force
- D. Polar force
Explanation: Dipole forces are also called hydrogen bonding. Chemical Bonding refers to the formation of a chemical bond between two or more atoms…
Correct answer: Dipole-dipole force- A. 1 time
- B. 2 times
- C. 5 times
- D. 20 times
Explanation: The strength of a hydrogen bond is 5% of that of a covalent bond/ a covalent bond is 20 times stronger than a hydrogen bond.
Correct answer: 20 times- A. Two electronegative atoms
- B. H atom and two electronegative atoms
- C. Two H atoms
- D. None of these
Explanation: Hydrogen bonding occurs between the highly electronegative atom of one molecule (oxygen, fluorine, and nitrogen) and the hydrogen atom…
Correct answer: H atom and two electronegative atoms- A. Polar bond
- B. Non-polar bond
- C. H-bond
- D. All of these
Explanation: Ethyl alcohol is non-polar but it has a hydrogen atom that has a partial positive charge so it can interact with the oxygen of water…
Correct answer: H-bond- A. NH3
- B. H2O
- C. HF
- D. CH4
Explanation: Water has a higher boiling point because the molecule is held together by strong hydrogen bonding which is between the partial positive…
Correct answer: H2O- A. Chlorine
- B. Ammonia
- C. Water
- D. Hydrochloric acid
Explanation: Option C is correct since each water molecule can form two hydrogen bonds involving their hydrogen atoms plus two further hydrogen bonds…
Correct answer: Water- A. H-bonding
- B. Dipole-dipole forces
- C. London dispersion forces
- D. Debye forces
Explanation: Electronegative atoms responsible for hydrogen bonding include N, O, F and rarely Cl.
Correct answer: H-bonding- A. Dipole dipole forces
- B. Induced dipole forces
- C. Chemical bond
- D. H-bond
Explanation: The base pairing, i.e. H-bond stabilizes the three-dimensional structure of DNA, i.e. the diameter of DNA also.
Correct answer: H-bond- A. Ionic, one
- B. Coordinate covalent, one lone pair
- C. Covalent, 2 lone pair
- D. All of these options are correct
Explanation: The answer is Coordinate covalent, one lone pair. In hydrogen bonding, the O-atom of water molecule forms a coordinate covalent bond with…
Correct answer: Coordinate covalent, one lone pair- A. Random
- B. Zig zag
- C. Tetrahedral
- D. Linear
Explanation: A hydrogen bond forms when the free-electron pair of one HF molecule interacts with the bonded hydrogen of another HF molecule.
Correct answer: Zig zag- A. 5th period
- B. 3rd period
- C. 6th period
- D. 7th period
Explanation: The boiling point of hydrides generally increases from top to bottom in a group.
Correct answer: 3rd period- A. 3 free electron
- B. One lone pair of electron
- C. 5 electron in outer shell
- D. None of these options are correct
Explanation: Nitrogen in ammonia has only 1 lone pair of electrons which it utilizes in hydrogen bonding.
Correct answer: One lone pair of electron- A. H2O > HF > HCl > NH3
- B. HF > H2O > HCl > NH3
- C. H2O > HF > NH3 > HCl
- D. HF > H2O > NH3 > HCl
Explanation: H2O has a greater boiling point than HF because H2O can form 4 hydrogen bonds while HF has 2 hydrogen bonds and to break all the hydrogen…
Correct answer: H2O > HF > NH3 > HCl- A. Covalent attraction
- B. Ionic bond formation
- C. Hydrogen bond formation
- D. Metallic bond formation
Explanation: When two ice cubes are pressed against each other, the phenomenon of them uniting into one cube is due to the formation of hydrogen bonds.
Correct answer: Hydrogen bond formation- A. London dispersion forces
- B. Dipole induced dipole forces
- C. Dipole-dipole forces
- D. Hydrogen bonding
Explanation: Hydrogen bonding is a specific type of dipole-dipole interaction that occurs when hydrogen is bonded to highly electronegative atoms like…
Correct answer: Hydrogen bonding- A. Both are polar molecules
- B. Hydrogen bonding between them
- C. Dipole-dipole attraction between them
- D. All of these
Explanation: Propanone (also known as acetone) is a polar molecule due to the presence of a carbonyl group.
Correct answer: All of these- A. Hydrogen bonding, London forces, Dipole - Dipole
- B. London force, Hydrogen bonding, Dipole - Dipole
- C. London forces, Dipole - Dipole, Hydrogen bonding
- D. Dipole- Dipole, London forces, Hydrogen bonding
Explanation: Generally, the order of increasing interactions isLondon forces < Debye forces <Dipole-Dipole < Hydrogen bonding
Correct answer: London forces, Dipole - Dipole, Hydrogen bonding- A. Dipole induced dipole forces
- B. Ion dipole forces
- C. Dipole-dipole forces
- D. London dispersion forces
Explanation: The forces which are present between the ions and water molecules are known as ion- dipole forces
Correct answer: Ion dipole forces- A. Dipole-dipole forces
- B. Ion dipole-dipole forces
- C. London dispersion forces
- D. Debye forces
Explanation: The attractive forces between the partial positive end of one molecule and partial negative end of other molecule are called dipole-dipole…
Correct answer: Dipole-dipole forces- A. Intermolecular hydrogen bonding
- B. Dipole induced dipoles
- C. Low electro-negativity difference between C and H
- D. All of the above
Explanation: Hydrogen bonding's effect decreases as the length of chain increases.
Correct answer: Intermolecular hydrogen bonding