MCQOPTIONS
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MCQOPTIONS
This section includes 657 Mcqs, each offering curated multiple-choice questions to sharpen your Testing Subject knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Ice is in dynamic equilibrium with water at |
| A. | 10 degree Celsius |
| B. | 0 degree Celsius |
| C. | 78 degree Celsius |
| D. | 100 degree Celsius |
| Answer» C. 78 degree Celsius | |
| 2. |
Centre of symmetry is |
| A. | type of symmetry |
| B. | element of symmetry |
| C. | side of symmetry |
| D. | parallel to symmetry |
| Answer» C. side of symmetry | |
| 3. |
Distance between two chloride ions in NaCl crystal is |
| A. | 8 angstrom |
| B. | 6 angstrom |
| C. | 5.63angstrom |
| D. | 3 angstrom |
| Answer» D. 3 angstrom | |
| 4. |
Response of molecular solids to light is that they are |
| A. | translucent |
| B. | opaque |
| C. | transparent |
| D. | hollow |
| Answer» D. hollow | |
| 5. |
Electron pool theory suggests that electrons loosed by atoms are |
| A. | outermost electrons |
| B. | innermost electrons |
| C. | middle shell electrons |
| D. | neutrons |
| Answer» B. innermost electrons | |
| 6. |
Allotropic forms have transition temperature which is usually less than |
| A. | boiling point |
| B. | melting point |
| C. | freezing point |
| D. | condensation point |
| Answer» C. freezing point | |
| 7. |
Angles in which unit cell usually grows are |
| A. | two |
| B. | three |
| C. | four |
| D. | five |
| Answer» C. four | |
| 8. |
Frederick Reinitzer discovered |
| A. | solids |
| B. | liquid crystals |
| C. | gases |
| D. | halogens |
| Answer» C. gases | |
| 9. |
According to molecular orbital theory filled orbitals in metals are |
| A. | localized |
| B. | delocalized |
| C. | permanent |
| D. | temporary |
| Answer» B. delocalized | |
| 10. |
Crystals of magnesium oxide are |
| A. | rhombohedral |
| B. | circular |
| C. | octahedral |
| D. | cubic |
| Answer» E. | |
| 11. |
At melting point temperature is |
| A. | varied |
| B. | increases |
| C. | decreases |
| D. | constant |
| Answer» E. | |
| 12. |
White light shows colors when diffracted by |
| A. | solids |
| B. | liquids |
| C. | liquid crystals |
| D. | gases |
| Answer» D. gases | |
| 13. |
Forces which are present in ionic solids are |
| A. | uni directional |
| B. | bidirectional |
| C. | non directional |
| D. | straight |
| Answer» D. straight | |
| 14. |
Value of enthalpy change of vaporization for chlorine is |
| A. | 7kJ/mole |
| B. | 90kJ/mole |
| C. | 45kJ/mole |
| D. | 10kJ/mole |
| Answer» E. | |
| 15. |
Due to the ligands action of splitting the color of transition metal compound, the change occurs at |
| A. | s-orbital |
| B. | d-orbital |
| C. | p-orbital |
| D. | f-orbital |
| Answer» C. p-orbital | |
| 16. |
Breaking along definite planes is a characteristic of |
| A. | amorphous solids |
| B. | crystalline solids |
| C. | virtual sides |
| D. | irregular solids |
| Answer» C. virtual sides | |
| 17. |
Osillography makes use of |
| A. | solids |
| B. | liquid crystals |
| C. | liquids |
| D. | gases |
| Answer» C. liquids | |
| 18. |
Heat change if occurs at constant pressure is called as |
| A. | entropy |
| B. | eutropy |
| C. | enthalpy |
| D. | none of these |
| Answer» D. none of these | |
| 19. |
Water will boil at 69 degree Celsius at |
| A. | Antarctica |
| B. | sea level |
| C. | Texas |
| D. | Mount Everest |
| Answer» E. | |
| 20. |
Bronze is an alloy of |
| A. | copper only |
| B. | tin only |
| C. | nickel and zinc |
| D. | copper and tin |
| Answer» E. | |
| 21. |
London dispersion forces were explained by |
| A. | Fritz London |
| B. | Clausius |
| C. | Einstein |
| D. | Dalton |
| Answer» B. Clausius | |
| 22. |
Zinc forms isomorph with |
| A. | zinc sulphate |
| B. | magnesium oxide |
| C. | cadmium |
| D. | chlorine |
| Answer» D. chlorine | |
| 23. |
Metals can be good conductors because of |
| A. | mobile electrons |
| B. | neutrons |
| C. | protons |
| D. | anti neutrino |
| Answer» B. neutrons | |
| 24. |
Bond lengths which are present in diamond are |
| A. | 234 pm |
| B. | 154pm |
| C. | 890 pm |
| D. | 600 pm |
| Answer» C. 890 pm | |
| 25. |
In chromatography liquid crystals are used as |
| A. | solution |
| B. | solute |
| C. | solvent |
| D. | none of these |
| Answer» D. none of these | |
| 26. |
Crystal systems are |
| A. | five |
| B. | six |
| C. | seven |
| D. | eight |
| Answer» D. eight | |
| 27. |
Instantaneous dipole -induced dipole forces are also known as |
| A. | London dispersion forces |
| B. | dipole forces |
| C. | van der Waal forces |
| D. | liquid forces |
| Answer» B. dipole forces | |
| 28. |
Usual shape of crystals of copper sulphate pentahydrate is |
| A. | cubic |
| B. | rhombic |
| C. | orthorhombic |
| D. | triclinic |
| Answer» E. | |
| 29. |
Enthalpy change is denoted by delta |
| A. | H |
| B. | P |
| C. | K |
| D. | J |
| Answer» B. P | |
| 30. |
Ionic crystals usually cannot conduct electricity in |
| A. | solid state |
| B. | molten state |
| C. | liquid state |
| D. | both a and b |
| Answer» B. molten state | |
| 31. |
Molecules of solid have not property of |
| A. | moving random |
| B. | close packing |
| C. | hardness |
| D. | rigidity |
| Answer» B. close packing | |
| 32. |
Value of molar heat of vaporization for HCl is |
| A. | 21kJ/mole |
| B. | 15.6kJ/mole |
| C. | 78kJ/mole |
| D. | 9kJ/mole |
| Answer» C. 78kJ/mole | |
| 33. |
Six parameters which help to determine unit cell are |
| A. | unit cell dimensions |
| B. | unit cell lines |
| C. | array |
| D. | group |
| Answer» B. unit cell lines | |
| 34. |
Greater number of atoms in a non polar molecule will increase |
| A. | volume |
| B. | shape |
| C. | deviation |
| D. | polarizability |
| Answer» E. | |
| 35. |
Crystal system in which all three edges and axes are equal, is called |
| A. | triclinic system |
| B. | hexagonal system |
| C. | cubic system |
| D. | monoclinic system |
| Answer» D. monoclinic system | |
| 36. |
Crystalline cell has smallest pattern which has all information about structure is known as |
| A. | unit cell |
| B. | array |
| C. | lattice |
| D. | crystals |
| Answer» B. array | |
| 37. |
Example of giant compound having covalent bond is |
| A. | boron nitride |
| B. | diamond |
| C. | cadmium iodide |
| D. | graphite |
| Answer» C. cadmium iodide | |
| 38. |
Range of angles in rhombohedral system is between |
| A. | 90 to120 degree |
| B. | 30 to 60 degree |
| C. | 50 to 100 degree |
| D. | 40 to 100 degree |
| Answer» B. 30 to 60 degree | |
| 39. |
Ionic solids show brittleness because they are arranged in |
| A. | linear layers |
| B. | parallel layers |
| C. | combined layers |
| D. | closely packed |
| Answer» C. combined layers | |
| 40. |
Between melting temperature and clearing temperature, state exist is called |
| A. | liquid crystal |
| B. | gases |
| C. | air |
| D. | crystals |
| Answer» B. gases | |
| 41. |
To release entrapped air in liquid in manometric method liquid is |
| A. | freezed |
| B. | melted |
| C. | boiled |
| D. | condensed |
| Answer» B. melted | |
| 42. |
Usual shape of crystals in which Bismuth grows is |
| A. | trigonal |
| B. | cubic |
| C. | rhombic |
| D. | orthorhombic |
| Answer» B. cubic | |
| 43. |
Crystalline form of nickel sulphate is |
| A. | orthorhombic |
| B. | cubic |
| C. | needle like |
| D. | sugar like |
| Answer» B. cubic | |
| 44. |
Lattice energy of LiCl in kilo joule per mole is |
| A. | −833 |
| B. | 900 |
| C. | −700 |
| D. | −400 |
| Answer» B. 900 | |
| 45. |
Potassium sulphate and potassium chromate forms |
| A. | rhombohedral crystals |
| B. | orthorhombic crystals |
| C. | cubic crystals |
| D. | circle crystals |
| Answer» C. cubic crystals | |
| 46. |
In dipole induced dipole forces force of attraction created is |
| A. | momentary |
| B. | permanent |
| C. | very strong |
| D. | neutral |
| Answer» B. permanent | |
| 47. |
Metallic luster actually means that metals have |
| A. | dull surfaces |
| B. | dark surfaces |
| C. | shining surfaces |
| D. | rough surfaces |
| Answer» D. rough surfaces | |
| 48. |
Sodium ions are surrounded by chloride ions to form |
| A. | tetrahedral |
| B. | octahedron |
| C. | triangle |
| D. | circle |
| Answer» C. triangle | |
| 49. |
Different form of solids which have same crystalline forms are called |
| A. | isomorphs |
| B. | duplicates |
| C. | parallel solids |
| D. | opposite solids |
| Answer» B. duplicates | |
| 50. |
Look of diamond crystal is |
| A. | centered cubic |
| B. | hexagonal |
| C. | sphere |
| D. | circle |
| Answer» B. hexagonal | |