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 16 of 18
- A. Less than water
- B. Less than ethylene glycol
- C. Less than methyl alcohol
- D. Same as ethyl alcohol
Explanation: Surface tension is the tendency of liquid surfaces at rest to shrink into the minimum surface area possible.The SI unit of Surface Tension…
Correct answer: Less than water- A. Black
- B. Brown
- C. Purple
- D. Yellow
Explanation: Iodine gives a purple color in organic solvents.c) Purple: Iodine in cyclohexane appears purple.
Correct answer: Purple- A. Viscosity
- B. Surface Tension
- C. Density
- D. Pressure
Explanation: The explanation for this question will be added soon.
Correct answer: Viscosity- A. Viscosity
- B. Surface Tension
- C. Density
- D. Pressure
Explanation: The explanation for this question will be added soon.
Correct answer: Surface Tension- A. Water molar mass is 18.02
- B. Water forms dative bonding
- C. Water molecule is polar
- D. Water has high density
Explanation: To dissolve an ionic compound, the water molecules must be able to stabilise the ions that result from breaking the ionic bond.
Correct answer: Water molecule is polar- A. Dipole dipole forces
- B. Debye forces
- C. London dispersion forces
- D. H-bonding
Explanation: London's dispersion forces are the weakest of all the intermolecular forces.
Correct answer: London dispersion forces307. Liquids have _.
- A. Definite volume
- B. Indefinite volume
- C. Irregular volume
- D. Changing volume
Explanation: The state of matter, which has a definite volume but no definite shape, is called liquid.In liquids, the molecules are close to each…
Correct answer: Definite volume- A. H-bonding
- B. London dispersion forces
- C. Dipole-dipole force
- D. Chemical bonding
Explanation: B is correct option because Iodine sublimes rather than melting and boiling.
Correct answer: London dispersion forces- A. Anisotropic liquids
- B. Nematic liquids
- C. Isotropic liquids
- D. Liquids
Explanation: a) Anisotropic liquids Anisotropic liquids are liquids that have different physical properties in different directions.
Correct answer: Anisotropic liquids310. Liquids have _ ?
- A. Definite shape
- B. Indefinite shape
- C. Indefinite volume
- D. None of these
Explanation: Liquids do not have any definite shape however definite volume.
Correct answer: Indefinite shape- A. Friedrich Reinitzer
- B. William Crooks
- C. Bravis
- D. J. J. Thomson
Explanation: Liquid crystal was discovered by Friedrich Reinitzer, an Austrian botanist and chemist, in 1888.
Correct answer: Friedrich Reinitzer- A. -188.1
- B. 188.1
- C. 184.4
- D. -184.4
Explanation: Fluorine, the most reactive chemical element and the lightest member of the halogen elements and has a boiling point, −188 °C (−306 °F).
Correct answer: -188.1- A. Lower than gases
- B. Higher than solids
- C. Lower than solids
- D. Both A and B
Explanation: When a solid changes into a liquid the atoms inside experience two variations.
Correct answer: Both A and B- A. Concentration
- B. Ratio between the particles
- C. Vapour pressure
- D. Attraction between the phases
Explanation: It's the standard definition of a Freezing point. The freezing point is "the temperature at which the vapor pressure of the substance in…
Correct answer: Vapour pressure- A. amount of liquid
- B. size of molecule
- C. temperature of liquid
- D. intermolecular forces
Explanation: The amount of liquid does not affect the magnitude of vapor pressure. Vapor pressure is primarily determined by the temperature of the…
Correct answer: amount of liquid- A. 200-760 torr
- B. 760-1200 torr
- C. 665-670 torr
- D. 660-700 torr
Explanation: To boil water at 110 °C, the external pressure should be approximately 1.4 atm, which is equivalent to 1,064 torr.
Correct answer: 760-1200 torr- A. Surface tension is greater than the atmospheric pressure
- B. Viscosity is less than the atmospheric pressure
- C. Vapor pressure equals the atmospheric pressure
- D. Viscosity equals the atmospheric pressure
Explanation: The temperature at which vapor pressure becomes equal to atmospheric pressure is called the boiling point.
Correct answer: Vapor pressure equals the atmospheric pressure- A. HCl
- B. HF
- C. HI
- D. HBr
Explanation: Due to the small size and high electronegativity of Fluorine, it does very strong Hydrogen Bonding in an HF molecule.
Correct answer: HF- A. Lower than
- B. Higher than
- C. Equal to
- D. Almost same as
Explanation: H2O have a greater boiling point than HF because H2O can form 4 hydrogen bond while HF has 2 hydrogen bond and to break all the hydrogen…
Correct answer: Lower than- A. Weaker than petrol
- B. Stronger than petrol
- C. Same as in petrol
- D. Negligible
Explanation: Melting and boiling points depend on the intermolecular strengths of a molecule, higher the boiling and melting point stronger the…
Correct answer: Stronger than petrol