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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145 questions · page 2 of 8
- A. 3%
- B. 3.5%
- C. 2.5%
- D. 2%
Explanation: Average seawater contains about 3.5% dissolved salts by mass, commonly expressed as approximately 35 parts per thousand.
Correct answer: 3.5%- A. 0.20 m glucose
- B. 0.20 m NaCl
- C. 0.15 m CaCl2
- D. 0.25 m sucrose
Explanation: Boiling-point elevation depends on the total number of dissolved particles, approximately i x molality: glucose gives 0.20, NaCl gives 2 x…
Correct answer: 0.15 m CaCl2- A. Anionic
- B. Cationic
- C. Nonionic
- D. Neutral
Explanation: Nonionic surfactants do not carry charged head groups, so their performance is much less affected by Ca2+ and Mg2+ ions in hard water.
Correct answer: Nonionic- A. Density
- B. Specific gravity
- C. Fluidity
- D. Absorbance
Explanation: Fluidity measures how easily a liquid flows and is defined as the reciprocal of viscosity: fluidity = 1/viscosity.
Correct answer: Fluidity- A. parts of solute in 1000 parts of solvent
- B. parts of solvent in 1000 parts of solute
- C. parts of solute in one million parts of solution
- D. parts of solvent in one million parts of solute
Explanation: Parts per million means the amount of solute present per one million parts of solution, such as 1 mg solute per 1 kg aqueous solution.
Correct answer: parts of solute in one million parts of solution- A. Molecules are surrounded by solvent molecules
- B. Ions are surrounded by solvent molecules
- C. Both ions and molecules are surrounded by solvent molecules
- D. Both ions and molecules are surrounded by water molecules
Explanation: Hydration is the solvation process in which dissolved ions or molecules become surrounded by water molecules.
Correct answer: Both ions and molecules are surrounded by water molecules- A. % w/w
- B. % w/v
- C. % v/v
- D. % v/w
Explanation: Both the alcohol and water amounts are measured as volumes, so the concentration is expressed as volume by volume, or % v/v.
Correct answer: % v/v- A. solvent
- B. solute
- C. phase
- D. ion
Explanation: The solute is the component present in the smaller amount and is dissolved by the solvent, which is usually present in the larger amount.
Correct answer: solute- A. One Molal NaCI
- B. One molal KCI solution
- C. One molal CaCI2
- D. One molal urea solution
Explanation: Freezing-point depression is proportional to the number of dissolved particles, ΔTf = iKf m.
Correct answer: One molal CaCI2- A. Molarity
- B. Molality
- C. More fraction of solvent
- D. Mole fraction of solute
Explanation: The molal boiling-point constant is defined by ΔTb = Kb m, so Kb = ΔTb / m, where m is molality in mol kg−1.
Correct answer: Molality- A. Na2SO4
- B. AlCl3
- C. CuSO4
- D. NH4Cl
Explanation: In the usual school-level approximation, Na2SO4 is treated as a salt of a strong acid and strong base, so its ions do not appreciably…
Correct answer: Na2SO4- A. basic
- B. acidic
- C. neutral
- D. cannot be presicted without data
Explanation: At the usual introductory level, Na2SO4 is considered to come from a strong acid and a strong base, so its solution is treated as neutral.
Correct answer: neutral- A. Beckmanns method
- B. Landsbergers method
- C. Linds method
- D. none of the above
Explanation: The Landsberger method is used to determine the elevation of boiling point by comparing the boiling behaviour of a solution with that of…
Correct answer: Landsbergers method- A. saturated solutions of each liquid
- B. unsaturated solutions of each liquid
- C. normal solution of each liquid
- D. no layer formation takes place
Explanation: In a partially miscible liquid pair, each layer contains as much of the other liquid as it can dissolve at that temperature, so both…
Correct answer: saturated solutions of each liquid- A. Super saturated solution
- B. unsaturated solution
- C. saturated solution
- D. dilute solution
Explanation: A saturated solution contains the maximum amount of solute that can dissolve at a specified temperature, so adding more solute will not…
Correct answer: saturated solution- A. solution
- B. compound
- C. radical
- D. ion
Explanation: A solution is a homogeneous mixture in which one or more solutes are uniformly distributed in a solvent, so its composition is the same…
Correct answer: solution- A. Non-electrolye solute
- B. Non-volatile solute
- C. Dilute solution
- D. All of the above
Explanation: In the usual introductory treatment, colligative-property calculations use a dilute solution containing a non-volatile, non-electrolyte…
Correct answer: All of the above- A. Opals
- B. Dust particles in smoke
- C. Paints
- D. Fog
Explanation: Fog is an aerosol consisting of tiny liquid water droplets dispersed in a gas, so it is a liquid-in-gas colloidal system.
Correct answer: Fog- A. 5 to 200 kg
- B. 20-200 kg
- C. 200-400 kg
- D. 30-400 kg
Explanation: Macronutrients such as nitrogen, phosphorus and potassium are required in relatively large amounts, commonly about 5 to 200 kg per acre…
Correct answer: 5 to 200 kg40. The percentage of suspended solid waste in raw water is removed by coagulation is__________________?
- A. 60
- B. 70
- C. 80
- D. 90Hiring An Environmental Sustainability Consultant
Explanation: Coagulation destabilises colloidal particles so they join into larger flocs that settle or are filtered, and conventional treatment…
Correct answer: 80