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. |
Compound which was studied in 1888 was |
| A. | benzoate crystals |
| B. | sulphate crystals |
| C. | cholesteryl sulphate |
| D. | cholesteryl benzoate |
| Answer» E. | |
| 2. |
The state of freezing involves |
| A. | loss of kinetic energy |
| B. | increased force of attraction |
| C. | liquid solidifies |
| D. | all of above |
| Answer» E. | |
| 3. |
Color of tin which exists tetragonal form is |
| A. | blue |
| B. | pink |
| C. | grey |
| D. | white |
| Answer» E. | |
| 4. |
Being shapeless is a property of |
| A. | crystalline solids |
| B. | amorphous solids |
| C. | simple solids |
| D. | compound solids |
| Answer» C. simple solids | |
| 5. |
Solids which have definite three dimensional pattern are called |
| A. | amorphous solids |
| B. | simple solids |
| C. | crystalline solids |
| D. | both b and c |
| Answer» D. both b and c | |
| 6. |
Iron and silver have crystals, having shape which is |
| A. | cubic |
| B. | rhombic |
| C. | orthorhombic |
| D. | hexagonal |
| Answer» B. rhombic | |
| 7. |
Crystal lattice is actually |
| A. | array of points |
| B. | lines of points |
| C. | sum of points |
| D. | triangle of points |
| Answer» B. lines of points | |
| 8. |
Boiling point 181.8 degree Celsius describes |
| A. | acetone |
| B. | phenol |
| C. | glycol |
| D. | ether |
| Answer» C. glycol | |
| 9. |
Interfacial angles do not depend upon |
| A. | shape of crystal |
| B. | atoms in crystal |
| C. | outer shine |
| D. | color |
| Answer» B. atoms in crystal | |
| 10. |
Forms which shows polymorphism are called |
| A. | polymorphs |
| B. | isomorphs |
| C. | parallel structures |
| D. | cubic crystals |
| Answer» B. isomorphs | |
| 11. |
Hexagonal packing is also known as |
| A. | 12 12 packing |
| B. | 34 34 packing |
| C. | 123 123 packing |
| D. | 89 89 packing |
| Answer» B. 34 34 packing | |
| 12. |
Shape of crystals of copper is |
| A. | rhombic |
| B. | monoclinic |
| C. | hexagonal |
| D. | cubic |
| Answer» E. | |
| 13. |
Melting points of covalent molecular solids is |
| A. | high |
| B. | low |
| C. | moderate |
| D. | defined |
| Answer» B. low | |
| 14. |
In NaCl crystals number of chloride ions which surrounds Sodium ions is |
| A. | 4 |
| B. | 5 |
| C. | 6 |
| D. | 7 |
| Answer» D. 7 | |
| 15. |
Molecular solids consist of |
| A. | polar part |
| B. | non polar part |
| C. | both polar and non polar parts |
| D. | neutral parts |
| Answer» D. neutral parts | |
| 16. |
Temperature sensing can be done by use of |
| A. | liquid crystal |
| B. | solid crystal |
| C. | gases |
| D. | liquid crystals |
| Answer» B. solid crystal | |
| 17. |
The three-dimensional arrangement with the alternating ions is present in |
| A. | ionic lattice |
| B. | crystal lattice |
| C. | covalent lattice |
| D. | metallic lattice |
| Answer» B. crystal lattice | |
| 18. |
The melting and boiling points of ionic compounds are |
| A. | high |
| B. | low |
| C. | mediate |
| D. | constant |
| Answer» B. low | |
| 19. |
The carbon atoms are arranged in planar layers in |
| A. | tin |
| B. | graphite |
| C. | diamond |
| D. | mercury |
| Answer» C. diamond | |
| 20. |
The metallic lattice is surrounded by the sea of |
| A. | protons |
| B. | electrons |
| C. | neutrons |
| D. | none of above |
| Answer» C. neutrons | |
| 21. |
At 179 degree Celsius cholesteryl benzoate occurs as |
| A. | turbid liquid |
| B. | clear liquid |
| C. | milky liquid |
| D. | cloudy liquid |
| Answer» C. milky liquid | |
| 22. |
The number of dative bonds to the central metal ion is its |
| A. | oxidation number |
| B. | compound number |
| C. | coordination number |
| D. | dative number |
| Answer» D. dative number | |
| 23. |
Fluidity of liquid crystals is related to |
| A. | solids |
| B. | liquids |
| C. | gases |
| D. | plasma |
| Answer» C. gases | |
| 24. |
Ionic bonding is very strong hence it needs a |
| A. | high temperatures |
| B. | low temperatures |
| C. | constant temperature |
| D. | high pressure |
| Answer» B. low temperatures | |
| 25. |
One of best example of amorphous solids is |
| A. | sodium chloride |
| B. | KCl |
| C. | plastic |
| D. | gold |
| Answer» D. gold | |
| 26. |
Artificial diamonds are used for |
| A. | jewelry only |
| B. | drill tips only |
| C. | tiles |
| D. | jewelry and drill tips |
| Answer» E. | |
| 27. |
Metallic bond with respect to valence bond theory was explained by |
| A. | Drude |
| B. | Loren |
| C. | L.Pauling |
| D. | Edward |
| Answer» D. Edward | |
| 28. |
Molar heat of vaporization for propane is |
| A. | 15.1kJ/mole |
| B. | 23kJ/mole |
| C. | 30.1kJ/mole |
| D. | 16.9kJ/mole |
| Answer» E. | |
| 29. |
Graphite conducts electricity in |
| A. | vertical layers |
| B. | parallel layers |
| C. | diagonal layers |
| D. | both a and b |
| Answer» C. diagonal layers | |
| 30. |
Compound which has boiling point greater than 100 degree Celsius is |
| A. | ether |
| B. | water |
| C. | ethylene glycol |
| D. | phenol |
| Answer» D. phenol | |
| 31. |
Forms in which tin occur are cubic and |
| A. | hexagonal |
| B. | tetragonal |
| C. | trigonal |
| D. | cubic |
| Answer» C. trigonal | |
| 32. |
ABC ABC arrangement is actually |
| A. | cubic open packing |
| B. | cubic close packing |
| C. | hexagonal open packing |
| D. | hexagonal closed packing |
| Answer» C. hexagonal open packing | |
| 33. |
For specific crystalline solids they posses same |
| A. | interfacial angles |
| B. | interfacial film |
| C. | outer surface |
| D. | none |
| Answer» B. interfacial film | |
| 34. |
When second layer of balls comes on first layer to understand structure of metals shape formed is called |
| A. | hexagon |
| B. | tetrahedral structure |
| C. | sphere |
| D. | cylinder |
| Answer» C. sphere | |
| 35. |
Theory which was first given to explain metallic bond was given by |
| A. | Drude |
| B. | Loren |
| C. | Edward |
| D. | Edison |
| Answer» B. Loren | |
| 36. |
Melting and boiling points of ionic crystals are usually |
| A. | high |
| B. | low |
| C. | moderate |
| D. | very low |
| Answer» B. low | |
| 37. |
In crystal lattice ions are arranged in |
| A. | two dimensions |
| B. | four dimensions |
| C. | three dimensions |
| D. | single dimension |
| Answer» D. single dimension | |
| 38. |
Molecular solids need a very lower temperature to break weak |
| A. | intermolecular forces |
| B. | dipole-forces |
| C. | hydrogen bonding |
| D. | none of above |
| Answer» B. dipole-forces | |
| 39. |
KBr has value of lattice energy in kilo joule per mole and value is |
| A. | −789 |
| B. | −690 |
| C. | −665 |
| D. | −900 |
| Answer» D. −900 | |
| 40. |
One of part of solidified noble gases is |
| A. | non polar atoms |
| B. | polar atoms |
| C. | molecules |
| D. | ions |
| Answer» B. polar atoms | |
| 41. |
Covalent crystalline solids are soluble in |
| A. | polar solvents |
| B. | non polar solvents |
| C. | water |
| D. | Normal saline |
| Answer» C. water | |
| 42. |
Anisotropic properties shows variation in |
| A. | chemical properties |
| B. | physical properties |
| C. | virtual properties |
| D. | general properties |
| Answer» C. virtual properties | |
| 43. |
Bond angle in structure of diamond is |
| A. | 109.5 degree |
| B. | 210 degree |
| C. | 154 degree |
| D. | 190 degree |
| Answer» B. 210 degree | |
| 44. |
Five d-orbitals having same energy level in an isolated transition metal atom is described as |
| A. | degenerate |
| B. | spectator |
| C. | non-degenerate |
| D. | none of above |
| Answer» B. spectator | |
| 45. |
Space which is occupied by ionic solids is |
| A. | very large |
| B. | maximum |
| C. | minimum |
| D. | moderate |
| Answer» D. moderate | |
| 46. |
Liquid crystals remained laboratory curiosity for |
| A. | 40 years |
| B. | 30 years |
| C. | 50 years |
| D. | 90 years |
| Answer» C. 50 years | |
| 47. |
Graphite have high melting and boiling points but they are |
| A. | soft |
| B. | non conductors of heat |
| C. | non conductors of electricity |
| D. | hard |
| Answer» B. non conductors of heat | |
| 48. |
Malleability and ductibility is property of |
| A. | covalent solids |
| B. | molecular solids |
| C. | metals |
| D. | ions |
| Answer» D. ions | |
| 49. |
In a crystal lattice, when size of ion is increased packing of ions become less which are |
| A. | having same charge |
| B. | oppositely charged |
| C. | having no charge |
| D. | having neutral charge |
| Answer» C. having no charge | |
| 50. |
In breast cancer liquid crystals show |
| A. | yellow colour |
| B. | green colour |
| C. | blue colour |
| D. | purple colour |
| Answer» D. purple colour | |