Ch-4 Liquids & SolidsBy abdulslambsn@gmail.com / October 6, 2025 Welcome To Your Quiz "Ch-4 Liquids & Solids" Click on "Start Quiz" To Continue... 1. The boiling point of the halogens: Increase down the group Decrease down the group Remains constant can't be predicted None 2. A crystal system in which all the axes and angles are unequal is called: Tetragonal system Monoclinic system Triclinic system Cubic system None 3. Water may boil at 120°C when external pressure is: 369 torr 700 torr 760 torr 1489 torr None 4. Transition temperature of tin is: 95.5°C 13.2°C 0°С 128.5°C None 5. Hydrogen bonding is strongest in: HI HBr HCI HF None 6. London dispersion forces are significant for: Polar molecules Ionic solids Metals Non polar molecules None 7. The boiling points of higher alkanes are greater than those of lower alkanes due to the reasons that: Higher alkanes have greater number of atoms The polarizability of higher alkanes is greater Higher alkanes have zigzag structures Higher alkanes have greater hydrogen bonding None 8. K2SO4 and K2CrO4 are isomorphic solids and exist in: Cubic form Orthorhombic form Trigonal form Tetragonal None 9. The forces which are present between the ions and the water molecules are known as: Dipole induced forces Ion-dipole forces Dipole-dipole forces London dispersion forces None 10. Liquids evaporate at every temperature. When the temperature becomes constant for a liquid then: Rate of evaporation is greater than the rate of condensation. The rate of condensation is greater than the rate of evaporation. The rate of condensation and evaporation becomes equal Depends upon the nature of the liquid None 11. The size of diameter of double helix of DNA is: 18-20 Å 20-30 Å 1-10 Å 25-30 Å None 12. Polarizability is measure of extent of distortion: Qualitative Quantitative Systematic None of these None 13. The number of Cl ions per unit cell of NaCl is: 8 6 4 2 None 14. Allotropy is the property of: Compound Element Atoms Mixture None 15. Which one is the following is a pseudo solid: CaF2 NaCl Borax Glass None 16. The structure of sodium chloride is: Body centered cube Face centered cube Simple cube None None 17. Polarizability generally ________ down the group: Increases Decreases Negligible Remain Constant None 18. Bucky balls is an allotropic form of: Sulphur Carbon Silica Tin None 19. Liquid hydrocarbon is: Methane Propane Ethane Hexane None 20. Heat change for one mole of a solid during converting into liquid is called: Molar heat of vaporization Molar heat of sublimation Molar heat of fusion Enthalpy change None 21. Ionic solid don't conduct the electrical current because: Ions do not have translatory motion Free electrons are less The coordination number of the ion is very high Strong covalent bonds are present in their structure None 22. The number of Na+ ions which surround each Cl ion in the NaCI crystal is: 4 6 8 12 None 23. Vapour pressure is not affected by: Surface area Temperature Pressure Intermolecular forces None 24. Kerosene oil is used to kill mosquitoes because it has surface tension: Very strong Very weak Zero No effect on surface tension None 25. The existence of an element in more than one crystalline forms: Allotropy Isotropy Isomorphism Polymorphism None 26. Glycerine decomposes at its: Melting point Boiling point Freezing point Critical point None 27. Crystal system shown by diamond is: Cubic Tetragonal Monoclinic Hexagonal None 28. Which of the following does not form a molecular crystal? Ice Graphite Iodine Sugar None 29. Water has maximum density at: 4°C 0°C 100°C 10°C None 30. Which substance shows anisotropic behavior in electrical conductivity? Diamond Graphite KCI Ice None 1 out of 6 Thanks For Taking This Quiz - Please See Your Answers/Results Below After Entering Your Name & Email... Name Email Time's up
