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 6 of 8
- A. Higher ∆H weaker intermolecular forces
- B. Higher ∆H, higher intermolecular forces
- C. Lower ∆H, higher intermolecular forces
- D. None of these
Explanation: Option B is the correct answer. The correct relation between ΔH (enthalpy change) and intermolecular force is: higher ΔH corresponds to…
Correct answer: Higher ∆H, higher intermolecular forces- A. -188.1
- B. 188.1
- C. -184.4
- D. 184.4
Explanation: Polarizability increases with increase in atomic and molecular size, among halogens fluorine has less polarizability so it boils at…
Correct answer: -188.1- A. Strong London forces in ethane due to smaller size.
- B. Weak London forces in hexane due to larger size.
- C. Strong London forces in hexane, due smaller size.
- D. Strong london forces in hexane due to larger size.
Explanation: The reason for this is that ethane has weaker intermolecular forces (van der Waals forces) compared to hexane due to its smaller size.
Correct answer: Strong london forces in hexane due to larger size.- A. Lesser - closer
- B. Greater - closer
- C. Smaller - greater
- D. Lesser - greater
Explanation: Option B is the most appropriate answer, the density of liquids are greater than gasses but are closer to solids.
Correct answer: Greater - closer- A. Alcohol and water
- B. Alcohol and ether
- C. Water and ether
- D. Carbon disulphide and water
Explanation: CS2 Insoluble in water and more dense (10.5 lb / gal) than water. Hence sinks in water.
Correct answer: Carbon disulphide and water- A. 10 ml
- B. 14 ml
- C. 16 ml
- D. 22.4 ml
Explanation: Following is the solution of this problem:
Correct answer: 16 ml- A. Dipole-dipole and London dispersion forces
- B. Dipole induced dipole forces
- C. Dipole-dipole forces
- D. Hydrogen bonding
Explanation: Chloroform exhibits both dipole-dipole forces (between the positive end of one molecule and the negative end of another) due to its polar…
Correct answer: Dipole-dipole and London dispersion forces- A. NH3
- B. Br2
- C. CHCl3
- D. Xe
Explanation: NH₃ is a polar molecule capable of forming hydrogen bonds due to the presence of a hydrogen atom bonded to a highly electronegative…
Correct answer: NH3- A. The molecules of liquid are in constant motion by sliding over each other
- B. The intermolecular forces of liquids are weaker than gases
- C. The liquid molecules have kinetic energy less than solids
- D. All statements are correct
Explanation: In liquids, the molecules are in constant motion, which allows them to flow and adapt to the shape of their container.
Correct answer: The molecules of liquid are in constant motion by sliding over each other- A. Very high heat of vaporization
- B. Very low boiling point
- C. Very low heat of vaporization
- D. All are correct
Explanation: Strong dipole-dipole forces among liquid molecules require a significant amount of energy to overcome when transitioning from the liquid…
Correct answer: Very high heat of vaporization- A. Liquid do not have definite shape
- B. Liquid do not have definite volume
- C. Liquid is highly compressible
- D. Liquid molecules can slide over each other
Explanation: Due to presence of random motion liquid has no definite shape.
Correct answer: Liquid do not have definite shape- A. Decreasing
- B. Increasing
- C. Constant
- D. Can not be predicted
Explanation: Across the short periods, the melting and boiling points of elements increase with the number of valence electrons upto group IVA and then…
Correct answer: Increasing- A. F2
- B. Br2
- C. Cl2
- D. I2
- E. He
Explanation: The correct answer is Option E: He. Helium is a noble gas characterized by its minimal atomic size and the lowest number of electrons…
Correct answer: He- A. Hs > Hv > Hf
- B. Hs = Hf = Hv
- C. Hs < Hf < Hv
- D. None
Explanation: The correct order of enthalpies is: Hs > Hv > Hf. Enthalpy of sublimation (Hs) involves both breaking the intermolecular forces from solid…
Correct answer: Hs > Hv > Hf- A. Water
- B. Mercury
- C. Ethyl alcohol
- D. Chloroform
- E. Benzene
Explanation: The correct answer is Mercury (Option B). Mercury has the highest surface tension because of the strong cohesive forces between its metal…
Correct answer: Mercury- A. Boiling
- B. Freezing
- C. Clearing
- D. All of these options are correct
Explanation: A liquid crystalline state is a state of matter that acts both like a liquid and a solid.
Correct answer: Clearing- A. H 2(s)
- B. I 2(s)
- C. Cl 2(g)
- D. CH 4(g)
Explanation: CH4 has largest intermolecular attraction because as it form sp3 hybridization in which bond energy is greater
Correct answer: CH 4(g)- A. 9
- B. 6.5-7
- C. 8
- D. 12
Explanation: Fresh milk is slightly acidic, with a normal pH close to 6.5 to 6.7, mainly because of dissolved carbon dioxide, phosphates and lactic…
Correct answer: 6.5-7- 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