Free Properties of Liquids MCQs with Answers
145 Properties of 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 behavior depends on intermolecular forces, which produce surface tension, viscosity, capillary action and a definite volume without a fixed shape. The topic also covers vapor pressure, evaporation, boiling point and the effect of temperature and external pressure, while distinguishing evaporation at the surface from boiling throughout the liquid.
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- A. are held in fixed positions in a lattice
- B. are close together but free to slide past one another
- C. are very far apart and move independently
- D. have no kinetic energy at all
Explanation: Intermolecular forces in a liquid are strong enough to keep the molecules in contact, which fixes the volume, but not strong enough to…
Correct answer: are close together but free to slide past one another- A. molecules at the surface are pulled inwards and sideways only, with no upward pull
- B. the surface molecules move faster than those inside
- C. air presses down on the surface
- D. the liquid evaporates from the surface
Explanation: A molecule inside the liquid is pulled equally in all directions, but one at the surface has no neighbours above it, so the net inward…
Correct answer: molecules at the surface are pulled inwards and sideways only, with no upward pull- A. increases as the temperature rises
- B. is independent of temperature
- C. decreases as the temperature rises
- D. is a measure of how quickly it evaporates
Explanation: Viscosity is resistance to flow and it depends on the intermolecular forces, so heating a liquid gives the molecules more kinetic energy…
Correct answer: decreases as the temperature rises- A. the adhesive forces between water and glass are stronger than the cohesive forces within water
- B. the cohesive forces are stronger than the adhesive forces
- C. the air pressure inside the tube is greater
- D. water is denser than glass
Explanation: Water wets glass because it is attracted to the silica surface more strongly than to itself, so it climbs the walls and drags a column up…
Correct answer: the adhesive forces between water and glass are stronger than the cohesive forces within water- A. Water and petrol
- B. Water and ethanol
- C. Oil and water
- D. Mercury and water
Explanation: Ethanol has a hydroxyl group that hydrogen bonds with water, so the two mix in all proportions, illustrating the rule that like dissolves…
Correct answer: Water and ethanol- A. mercury is a metal
- B. mercury evaporates rapidly
- C. cohesive forces between mercury atoms exceed the adhesive forces to glass
- D. glass is polar and mercury is non polar
Explanation: Mercury atoms are held to each other by strong metallic bonding far more strongly than they are attracted to the glass, so the liquid…
Correct answer: cohesive forces between mercury atoms exceed the adhesive forces to glass- A. Liquids diffuse more slowly than gases
- B. Liquids are almost incompressible
- C. The molecules of a liquid are held in fixed positions
- D. Liquids have a definite volume but no definite shape
Explanation: Molecules in a liquid are in constant random motion and slide freely past one another, which is exactly what allows a liquid to flow and…
Correct answer: The molecules of a liquid are held in fixed positions- A. Efflorescence
- B. Dehydrogenation
- C. Desalination
- D. Deliquescence
Explanation: Deliquescent substances absorb water vapour from the atmosphere and may dissolve in the absorbed water.
Correct answer: Deliquescence- A. Hygrometer
- B. Hydrometer
- C. Anemometer
- D. Viscometer
Explanation: A viscometer measures a liquid's viscosity by measuring its resistance to flow under specified conditions.
Correct answer: Viscometer- A. Remains same
- B. Increases
- C. Decreases
- D. None
Explanation: Heating a liquid increases the kinetic energy of its molecules and weakens the relative effect of cohesive attractions, so the liquid…
Correct answer: Decreases- A. Decibell
- B. Torr
- C. Poise
- D. Hertz
Explanation: The poise is the CGS unit of dynamic viscosity, which measures a liquid's resistance to flow.
Correct answer: Poise- A. DDT
- B. mercury salt
- C. Domestic waste
- D. Aluminum foil
Explanation: Domestic waste contains biodegradable materials such as food residues and paper that microorganisms can decompose.
Correct answer: Domestic waste- A. COD
- B. DO
- C. PH
- D. Salinity
Explanation: COD measures the amount of oxygen needed to chemically oxidize organic matter in water, so a high COD indicates greater organic pollution.
Correct answer: COD- A. Na-Silicate solution
- B. Na-sulphate solution
- C. Na-Chloride solution
- D. K-Chloride solution
Explanation: Sodium silicate is an alkaline builder used in detergents and can contribute significantly to their irritant or toxic effects, especially…
Correct answer: Na-Silicate solution- A. Gram Flour and Water
- B. Baking Soda and Vinegar
- C. Cement and Water
- D. Cornstarch and Water
Explanation: Oobleck is a non-Newtonian suspension made by mixing cornstarch with water.
Correct answer: Cornstarch and Water- A. greater than true solution
- B. greater than suspension
- C. In b/w true solution & suspension
- D. None of These
Explanation: Colloidal particles have sizes intermediate between those of true-solution particles and suspension particles, typically about 1 nm to…
Correct answer: In b/w true solution & suspension- A. 78°C
- B. 58°C
- C. 73°C
- D. 56°C
Explanation: Ethyl alcohol, or ethanol, boils at about 78°C at standard atmospheric pressure because its vapour pressure becomes equal to atmospheric…
Correct answer: 78°C- A. To check its Acidity and Basicity
- B. To Check temperature
- C. To check its Purity and nature
- D. None of These
Explanation: A liquid's boiling point is useful for identifying its nature and checking its purity, because dissolved impurities usually change the…
Correct answer: To check its Purity and nature- A. Glycerine
- B. Water
- C. Honey
- D. Spirit
Explanation: Honey is generally the most viscous of these liquids because its concentrated sugars create strong intermolecular attractions and greatly…
Correct answer: Honey- A. Drying
- B. Filtration
- C. Sieving
- D. Extraction
Explanation: Filtration separates an insoluble solid from a liquid by passing the mixture through a porous medium that retains the solid particles.
Correct answer: FiltrationProperties of Liquids MCQs: common questions
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There are 145 Properties of Liquids MCQs in the Chemistry bank, shown 20 to a page with the correct answer and an explanation on each.
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