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.
Last updated
350 questions · page 9 of 18
- A. 817 mm of Hg
- B. 792 mm of Hg
- C. 830 mm of Hg
- D. 724 mm of Hg
Explanation: This is the following solution: Pressure in the jar =830 mm of Hg.Pressure of moisture =30 mm of Hg.Pressure of dry gas =830−30=800 mm of…
Correct answer: 817 mm of Hg- A. Static equilibrium
- B. Dynamic equipment
- C. Dynamic equilibrium
- D. None
Explanation: A state in which the forward and reverse reactions of a chemical equation are happening at the same rate.The concentrations of the…
Correct answer: Dynamic equilibrium- A. boiling
- B. Freezing
- C. Evaporation
- D. Condensation
Explanation: This spontaneous change of a liquid into its vapours is called evaporation and it continues at all temperatures.
Correct answer: Evaporation- A. Temperature
- B. Nature of liquid
- C. Intermolecular forces
- D. All
Explanation: Factors Of Vapor Pressure: Vapour pressure depends on : * Temperature * Nature of liquid * Intermolecular forces Temperature: * Higher…
Correct answer: All- A. Xe
- B. Br2
- C. CH4
- D. All same
Explanation: Vapour pressure is the pressure exerted by a vapour in equilibrium with its solid or liquid form at a given temperature.
Correct answer: CH4- A. CH4
- B. Br2
- C. Xe
- D. All same
Explanation: Vapour pressure is the pressure exerted by a vapour in equilibrium with its solid or liquid form at a given temperature.
Correct answer: Br2- A. N pentane
- B. Isopentane
- C. Neo pentane
- D. All same
Explanation: . The intermolecular forces in n-pentane are weaker than those in isopentane and neopentane.
Correct answer: Neo pentane- A. Temperature
- B. Size of molecules
- C. Intermolecular force
- D. Surface area
Explanation: Vapour pressure is a thermodynamic property of a liquid that measures the tendency of its molecules to escape into the gas phase.
Correct answer: Surface area- A. Temperature
- B. Intermolecular force
- C. Surface area
- D. All
Explanation: Vapour pressure is inversely proportional to the strength of intermolecular forces.
Correct answer: Intermolecular force- A. Water
- B. Ammonia
- C. Glucose
- D. All
Explanation: The boiling point of a substance is determined by the intermolecular forces between the molecules of that substance.The glucose molecules…
Correct answer: Glucose- A. 4.63 torr
- B. >4.630 torrs
- C. <4.73 torr
- D. 47.07
Explanation: The increase is from 527.8 torr to 760 torr when temperature changes from 90°C to 100°C.
Correct answer: >4.630 torrs- A. Water
- B. Glycerol
- C. Isopentane
- D. All same
Explanation: The vapor pressure of a liquid is directly proportional to the strength of the intermolecular forces between the molecules in the liquid.
Correct answer: Water- A. Mount everest
- B. Siachen
- C. K2
- D. Gwadar
Explanation: Atmospheric Pressure is directly proportional to the Boiling Point of liquid.Gwadar is at sea level so it has highest value of boiling…
Correct answer: Gwadar- A. Surface phenomenon
- B. Continuous
- C. Exothermic
- D. Endothermic
Explanation: The opposite of evaporation is condensation, which is the process of a gas changing into a liquid.
Correct answer: Exothermic- A. 300mmHg
- B. 350 mmHg
- C. 760mmHg
- D. 760 atm
Explanation: For water, the vapour pressure reaches the standard sea level atmospheric pressure of 760 mmHg/760torr/1atm at 100°C.
Correct answer: 760mmHg- A. Diethyl ether
- B. Ethanol
- C. Water
- D. All same
Explanation: Diethyl ether has the maximum volatility. Volatility is a measure of how easily a substance changes from a liquid to a gas.
Correct answer: Diethyl ether- A. H bonding
- B. Dipole forces
- C. London forces
- D. Debye forces
Explanation: The most important type of intermolecular force for noble gases is London dispersion forces.
Correct answer: London forces- A. Surface area
- B. Temperature
- C. External pressure
- D. Humidity
Explanation: The rate of evaporation does not depend on external pressure because the process of evaporation does not involve the compression or…
Correct answer: External pressure- A. Diethyl ether
- B. Chloroform
- C. Carbon tetrachloride
- D. Water
Explanation: The boiling point of a substance is a measure of the strength of the intermolecular forces between the molecules of the substance.
Correct answer: Water- A. Raised than the normal
- B. Lower than the normal
- C. Lower than the freezing point
- D. All of these options are correct
Explanation: The trapped steam increases the atmospheric pressure inside the cooker by 15 pounds per square inch (psi) or 15 pounds above-normal…
Correct answer: Raised than the normal