Free Liquids MCQs with Answers
350 Liquids MCQs from Chemistry, each with the correct answer and a written explanation of why it is correct. Free and unlimited, with no account needed.
Liquid properties arise from intermolecular attractions, including surface tension, viscosity, cohesion and adhesion. The topic links evaporation, vapour pressure and boiling point with temperature, explains hydrogen bonding, and covers water's unusual expansion on freezing and its density maximum, which distinguish water from ordinary liquids.
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350 questions · page 11 of 18
- 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- A. F---H
- B. O----H
- C. N---H
- D. O---F
Explanation: Strength of H-bond ↑ Electronegative difference ↑
Correct answer: F---H- A. Covalent attraction
- B. Ionic bond formation
- C. Hydrogen bond formation
- D. Metallic bond formation
Explanation: Ice (water) has strong hydrogen bonding due to which ice cubes unite to form single larger ice cube.
Correct answer: Hydrogen bond formation- A. Option A
- B. Option B
- C. Option C
- D. Option D
Explanation: CH3 OH has hydrogen bonding as prominent intermolecular force
Correct answer: Option A- A. 1
- B. 2
- C. 3
- D. 4
Explanation: When ammonia is dissolved in water, each ammonia molecule can form one hydrogen bond with a water molecule.
Correct answer: 1- A. H-bonding
- B. Dipole dipole forces
- C. Induced dipole force
- D. All
Explanation: Lower alcohols are soluble in water due to hydrogen bonding. The hydroxyl group (-OH) in alcohols is capable of forming hydrogen bonds…
Correct answer: H-bonding- A. Benzene
- B. Water
- C. NH3
- D. HF
Explanation: Water exhibits hydrogen bonding because it is a polar molecule. Water has two polar bonds, and it has two lone pairs of electrons on the…
Correct answer: Water- A. H----F
- B. H-----Cl
- C. H-----O
- D. All same
Explanation: Hydrogen fluoride (HF) has the strongest hydrogen bond. This is because fluorine is the most electronegative element of the three, meaning…
Correct answer: H----F- A. Solubility
- B. Cleansing action
- C. Adhesive nature
- D. All
Explanation: Hydrogen Bonding: Involved in solubility. Involved in cleansing action. Involved in adhesive nature.
Correct answer: All- A. Joule
- B. N/m2
- C. Dynes/cm
- D. Poise
- E. Ergs
Explanation: The cgs unit of viscosity is poise (P) whereas the SI unit of viscosity is newton-second per square meter, which is usually expressed as…
Correct answer: Poise- A. High electronegativity of S
- B. Greater size of SO2
- C. SO2 is polar and CO2 is non-polar
- D. SO2 is more acidic than CO2
Explanation: More polar molecules tend to form strong intermolecular forces which require a significant amount of heat to be overcome hence SO2 has a…
Correct answer: SO2 is polar and CO2 is non-polar- A. Density
- B. Pressure
- C. Viscosity
- D. All
Explanation: Matter changes from one state to another by change in temperature and pressure. For e.g.
Correct answer: Pressure- A. ammonia
- B. water
- C. kerosene oil
- D. HCl
Explanation: London forces are present in kerosene oil. The London dispersion force is caused by random and temporary changes in the polarity of atoms…
Correct answer: kerosene oil