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 15 of 18
- A. Physical state of matter
- B. Intermolecular forces
- C. Surface area
- D. Temperature
Explanation: Option B: A liquid's vapor pressure is directly related to the intermolecular forces present between its molecules.
Correct answer: Surface area- A. Endothermic reaction
- B. Exothermic reaction
- C. Chemical reaction
- D. None of the above
Explanation: Evaporation does not involve the conversion of one chemical species to another (the chemical species is water throughout).
Correct answer: Endothermic reaction- A. Mercury pressure
- B. Glass pressure
- C. Atmospheric pressure
- D. Container pressure
Explanation: Vapor pressure is measured by taking the difference in liquid pressure and atmospheric pressure.Note: Total pressure (also called liquid…
Correct answer: Atmospheric pressure- A. Glycerol
- B. Isopentane
- C. Ethanol
- D. Both Options A and C are correct
Explanation: Glycerol have lower vapor pressure compared to isopentane and ethanol. Vapor pressure is a measure of the tendency of a substance to…
Correct answer: Glycerol- A. Sublimation
- B. Freezing
- C. Melting
- D. Condensation
Explanation: Evaporation is the process of a liquid changing into a gas phase. It occurs at the surface of the liquid.
Correct answer: Condensation- A. Decrease in external pressure increases the boiling point
- B. Increase in external pressure decreases the boiling point
- C. Increase in external pressure increases the boiling point
- D. None of these options are correct
Explanation: A pressure cooker is a closed container. The vapours of water formed are not allowed to escape.
Correct answer: Increase in external pressure increases the boiling point- A. Glycerol
- B. Isopentane
- C. Ethanol
- D. Both A and C
Explanation: Correct option is A. Vapor pressure depends upon the molecules that bond well and the forces of attraction of mercury metal atoms are…
Correct answer: Glycerol- A. Physical state of matter
- B. Intermolecular forces
- C. Temperature
- D. Both B and C
Explanation: The vapour pressure depends on two factors:1. Nature of liquid: The nature of liquid is explained on the basis of its intermolecular…
Correct answer: Both B and C- A. Surface phenomena is applicable.
- B. It causes cooling.
- C. Is exothermic.
- D. It is continous
Explanation: Molecules at the surface use enough energy to exceed vapor pressure and they escape in the form of gas in the air.
Correct answer: It causes cooling.- A. London dispersion Forces
- B. Dipole dipole forces
- C. Hydrogen bonding
- D. All of the above options are correct
Explanation: When two ice cubes are pressed over each other, they unite to form one cube, Hydrogen bonding is responsible for it.
Correct answer: Hydrogen bonding- A. London dispersion forces
- B. Hydrogen bonding
- C. Dipole dipole forces
- D. Covalent bonding
Explanation: The water can form 4 hydrogen bonds as the intermolecular forces of interaction with other molecules.
Correct answer: Hydrogen bonding- A. Dipole induced Dipole inter action
- B. London dispersion forces
- C. Intra molecular H - bonding
- D. Inter molecuar H - bonding
Explanation: The boiling of a compound is raised by Intermolecular hydrogen bonding.
Correct answer: Inter molecuar H - bonding- A. Functional group
- B. Intermolecular forces
- C. Nature of alkyl groups
- D. Isomerism
Explanation: The boiling point of ether is less than alcohols and phenols because it has weak intermolecular forces as compared to alcohols and phenols.
Correct answer: Intermolecular forces- A. Dipole dipole attraction
- B. Covalent attraction
- C. Van Der Waal's forces
- D. H-bonding
Explanation: Explanation for this question will be added soon.
Correct answer: H-bonding- A. CH3CH2OH
- B. CH3OCH3
- C. CH3CH2Cl
- D. All of these
Explanation: Ethanol shows hydrogen bonding. The -OH group in ethanol has a hydrogen atom that can form a hydrogen bond with the lone pair of Electrons…
Correct answer: CH3CH2OH- A. HI
- B. HF
- C. HCL
- D. HBr
Explanation: We talk about HF, it has strong hydrogen bonding and thus has the highest boiling point.
Correct answer: HF- A. Ammonia and Carbon
- B. Acetone and Kerosene
- C. Acetone and Chloroform
- D. Water and Neon
Explanation: There exists hydrogen bonding between Acetone and Chloroform. The three Chlorine atoms in Chloroform deprived the carbon atom of its…
Correct answer: Acetone and Chloroform- A. Two electronegative atoms
- B. Two electronegative atoms and H atoms
- C. Two H atoms
- D. None of these options are correct
Explanation: Hydrogen bond acts as a bridge between hydrogen atom and two electronegative atoms.
Correct answer: Two electronegative atoms and H atoms- A. 10
- B. 12
- C. 20
- D. 2
Explanation: Covalent bonds are much stronger than either, 20 times more than the H-bond and 2000 times stronger than the d-d force.
Correct answer: 20- A. Ionic bond
- B. Metallic bond
- C. H-bond
- D. None of these
Explanation: A hydrogen bond (or H-bond) is a primarily electrostatic force of attraction between a hydrogen (H) atom which is covalently bound to a…
Correct answer: H-bond