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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- A. carbon, silicon or sulphur
- B. any halogen
- C. a metal
- D. a small, highly electronegative atom such as fluorine, oxygen or nitrogen
Explanation: The electronegative atom pulls electron density away, leaving the hydrogen nucleus unusually exposed so that it attracts a lone pair on a…
Correct answer: a small, highly electronegative atom such as fluorine, oxygen or nitrogen- A. water molecules are hydrogen bonded to one another
- B. water has a larger molar mass
- C. hydrogen sulphide is an ionic compound
- D. water molecules are non polar
Explanation: Extensive hydrogen bonding between water molecules must be overcome before they can escape, so a great deal of energy is needed and water…
Correct answer: water molecules are hydrogen bonded to one another- A. the high boiling point of ammonia compared with phosphine
- B. the solubility of ethanol in water
- C. the low density of ice compared with water
- D. the electrical conductivity of molten sodium chloride
Explanation: Molten sodium chloride conducts because it is an ionic compound whose ions become mobile when the lattice melts, and there is no hydrogen…
Correct answer: the electrical conductivity of molten sodium chloride- A. Ammonia gas
- B. Ice
- C. Ethanol
- D. Acetone and chloroform
Explanation: Ice has an extensive, three-dimensional hydrogen-bonded network, with each water molecule strongly interacting with neighbouring…
Correct answer: Ice- A. Water
- B. Ethyl Alcohol
- C. Phenol
- D. All of these
Explanation: Water, ethyl alcohol, and phenol all contain an O-H bond, allowing hydrogen bonding between the partially positive hydrogen and a lone…
Correct answer: All of these- A. Ionic
- B. Covalent
- C. Hydrogen
- D. Dating
Explanation: The hydrogen and oxygen atoms within one water molecule share electrons, forming polar covalent O-H bonds.
Correct answer: Covalent- A. 2
- B. 3
- C. 4
- D. None
Explanation: One water molecule can donate two hydrogen bonds through its two hydrogen atoms and accept two through the two lone pairs on oxygen…
Correct answer: 4- A. Due to Hydrogen bonding
- B. Due to high molecular weight
- C. Due to its Acidic nature
- D. Due to its Low molecular weight
Explanation: Ethanol molecules form hydrogen bonds through the O-H group, so more energy is needed to separate them into vapour than in acetone, whose…
Correct answer: Due to Hydrogen bonding- A. C2H6
- B. C2H5Cl
- C. CH3OCH3
- D. C2H5OH
Explanation: Ethanol, C2H5OH, forms hydrogen bonds because its O-H group contains hydrogen bonded to highly electronegative oxygen, and oxygen has lone…
Correct answer: C2H5OH- A. Coordinate covalent bonds
- B. Hydrogen bonds
- C. Debye forces
- D. London dispersion forces
Explanation: Coordinate covalent bonds are intramolecular bonds formed when one atom supplies both electrons in a shared pair, so they are not…
Correct answer: Coordinate covalent bonds- A. Water
- B. Ethyl alcohol
- C. Phenol
- D. Diethyl ether
Explanation: Hydrogen bonding requires hydrogen bonded to a highly electronegative atom such as O, N or F, and a lone pair on a neighbouring molecule.
Correct answer: Diethyl ether- A. Solubility
- B. Cleansing action of detergents
- C. Biological molecules
- D. All
Explanation: Hydrogen bonding helps polar substances dissolve in water, contributes to interactions in biological molecules, and assists detergent…
Correct answer: All- A. CH₃CH₂OH
- B. CH₃-O-CH₃
- C. CH₃CH₂Cl
- D. All of these
Explanation: Hydrogen bonding in alcohols. Alcohol is an organic molecule containing an -O-H group.
Correct answer: CH₃CH₂OH- A. Dipole-dipole interactions
- B. Ion-dipole interactions
- C. Hydrogen bonding
- D. London-dispersion forces
Explanation: HF has a higher boiling point than HCl because of the hydrogen bonding that exists between HF molecules.
Correct answer: Hydrogen bonding- A. O-H
- B. N-H
- C. F-H
- D. Cl-H
Explanation: Hydrogen bonding occurs when a hydrogen atom is bonded to a highly electronegative atom (such as oxygen, nitrogen, fluorine, or chlorine)…
Correct answer: F-H- A. DNA
- B. Proteins
- C. Carbohydrates
- D. Lipids
Explanation: In DNA, hydrogen bonding occurs between complementary base pairs (adenine-thymine and guanine-cytosine), holding the two strands of the…
Correct answer: Lipids- A. 10
- B. 12
- C. 20
- D. 2
Explanation: If we compare the strength of covalent bonds to hydrogen bonds, covalent bonds are much stronger.
Correct answer: 20- A. H-bonding
- B. Dipole dipole forces
- C. Ionic forces
- D. Debye force
Explanation: Glue is made of PVA and water molecules. The oxygen in water molecules has lone pairs that can form hydrogen bonds with the h of another…
Correct answer: H-bonding- A. Strong
- B. Moderate
- C. Weak
- D. Constant
Explanation: Both H2O and HF have electronegative oxygen and fluorine atoms respectively in their molecule.
Correct answer: Strong- A. Ammonia and Carbon
- B. Acetone and Kerosene
- C. Acetone and Chloroform
- D. Water and Neon
Explanation: This is correct as In chloroform, three chlorine atoms are present. These atoms deprive the carbon atoms of the electrons.
Correct answer: Acetone and ChloroformHydrogen Bonding MCQs: common questions
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There are 75 Hydrogen Bonding MCQs in the Chemistry bank, shown 20 to a page with the correct answer and an explanation on each.
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