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 12 of 18
- A. smaller, closer
- B. greater, closer
- C. smaller, far away
- D. greater, far away
Explanation: The densities of liquids are much greater than gases but closer to solids.
Correct answer: greater, closer- A. boiling
- B. freezing
- C. clearing
- D. all of these
Explanation: So, a liquid crystalline state exists between two temperatures i.e. melting temperature and clearing temperature.
Correct answer: clearing- A. 123°C
- B. 135°C
- C. 145°C
- D. 179°C
Explanation: When heated, the cholesteryl Benzoate melts at 145°C to form a milky liquid, and at 179°C, the milky liquid suddenly becomes clear.
Correct answer: 145°C- A. Anisotropic liquids
- B. Nematic liquids
- C. Isotropic liquids
- D. Liquids
Explanation: Liquid crystals are a state of matter intermediate between that of a crystalline solid and liquid.
Correct answer: Liquids- A. Atoms of helium in gaseous state at high temperature
- B. Molecules of water
- C. Molecules of solid iodine
- D. Molecules of HCl gas
Explanation: Option A: Atoms of helium in the gaseous state at high temperature: Helium (He) is a noble gas that exists as individual atoms in the…
Correct answer: Atoms of helium in gaseous state at high temperature- A. Ionic compounds
- B. Solids
- C. Covalent compounds
- D. Liquids
Explanation: The intermolecular distance is larger in liquids. Molecules of liquid have very less force of attraction between them.OPTION A: Ionic…
Correct answer: Liquids- A. Speed of atoms
- B. Motion of particles
- C. Distance b/w molecules
- D. All of these options are correct
Explanation: OPTION A: The intermolecular forces are dependent on the distribution of electrons and the shape of the molecules, not on the speed of…
Correct answer: Distance b/w molecules- A. Heat
- B. Order
- C. Hotness
- D. Coldness
Explanation: OPTION A: The turbid liquids are called liquid crystals due to the presence of ordered molecular arrangements, not due to the presence of…
Correct answer: Order- A. N2
- B. Cl2
- C. O2
- D. I2
Explanation: OPTION A: In comparison, N2 (Nitrogen) has a smaller size and fewer electrons, making it less polarizable.OPTIONS B, C: Cl2 (chlorine) and…
Correct answer: I2230. Liquids have _.
- A. Definite mass
- B. Definite shape
- C. Definite volume
- D. None of these options is correct
Explanation: Liquids do not have a definite shape but have a "definite volume". Unlike solids, liquids adopt the shape of the container.
Correct answer: Definite volume- A. Dipole-dipole forces
- B. Debye forces
- C. London dispersion forces
- D. H-bonding
Explanation: London Dispersion Forces are also known as "instantaneous dipole" induced dipole interactions created by the momentary forced of…
Correct answer: London dispersion forces- A. Chemical properties of a substance
- B. Kinetic properties of a substance
- C. Thermodynamic properties of a substance
- D. Nature of a substance
Explanation: Dipole forces have a direct relation with the thermodynamic properties of a substance.
Correct answer: Thermodynamic properties of a substance- A. Pressure
- B. Temperature
- C. Mass
- D. Nature
Explanation: When the temperature of molecules increases, they gain energy and move and collide more, hence temperature is directly proportional to…
Correct answer: Temperature- A. The electronegativity difference is higher
- B. The electronegativity difference is less
- C. The molecules are far from each other
- D. The lectronegativity difference is zero
Explanation: Greater electronegativity difference means the molecule is polar, hence polar molecules have permanent dipole-dipole that are stronger…
Correct answer: The electronegativity difference is higher- A. Water & ethanol
- B. Water & acetone
- C. Water & pentane
- D. Water & chloroform
Explanation: Pentane is an organic compound that is non-polar and water is a polar molecule, hence they won't mix together because water cannot form…
Correct answer: Water & pentane- A. Lower than gases
- B. Higher than solids
- C. Lower than solids
- D. Both Options A and B are correct
Explanation: This option is correct. Both statements in options a) and b) are accurate based on the typical arrangements of particles in liquids and…
Correct answer: Both Options A and B are correct- A. More than 1
- B. Two
- C. Three
- D. Four
Explanation: Liquid crystals can be classified into three main categories: thermotropic liquid crystals, lyotropic liquid crystals, and metallotropic…
Correct answer: Three- A. Opposite poles
- B. Polar part
- C. Non-polar part
- D. Positive end
Explanation: The cleansing action of both soaps and detergents results from their ability to lower the surface tension of water, to emulsify oil or…
Correct answer: Polar part- A. Dipole-dipole forces
- B. Ion dipole forces
- C. H-bond
- D. Debye force
Explanation: Forces that are present between ions and water molecules are called ion-dipole forces.
Correct answer: Ion dipole forces- A. Dipole-Dipole
- B. Induced dipole
- C. Dipole-induced dipole
- D. Spontaneous-induced dipole
Explanation: This cumulative dipole-induced dipole (London forces) interaction creates attractive forces.
Correct answer: Spontaneous-induced dipole