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. |
Diffraction of light is a property of |
| A. | liquids |
| B. | gases |
| C. | nitrogen |
| D. | liquid crystals |
| Answer» E. | |
| 2. |
Allotropic forms of Sulphur are rhombic and |
| A. | octahedral |
| B. | cubic |
| C. | monoclinic |
| D. | needle like |
| Answer» D. needle like | |
| 3. |
Cholesteryl benzoate is milky liquid at |
| A. | 149 degree Celsius |
| B. | 180 degree Celsius |
| C. | 145 degree Celsius |
| D. | 189 degree Celsius |
| Answer» D. 189 degree Celsius | |
| 4. |
Shape of crystals of sugar is |
| A. | rhombic |
| B. | cubic |
| C. | monoclinic |
| D. | hexagonal |
| Answer» D. hexagonal | |
| 5. |
In manometric method, to measure vapor pressure at any temperature liquid is |
| A. | cooled |
| B. | warmed |
| C. | condensed |
| D. | freezed |
| Answer» C. condensed | |
| 6. |
Glycerin is decomposed at |
| A. | 400 degree Celsius |
| B. | 290 degree Celsius |
| C. | 789 degree Celsius |
| D. | 750 degree Celsius |
| Answer» C. 789 degree Celsius | |
| 7. |
Exact position of atoms in molecular solids can be determined by |
| A. | microscope |
| B. | compound microscope |
| C. | X ray |
| D. | chromatography |
| Answer» D. chromatography | |
| 8. |
Phase changes are usually |
| A. | endothermic |
| B. | exothermic |
| C. | high energy |
| D. | high pressure |
| Answer» B. exothermic | |
| 9. |
Length a in unit cell is along |
| A. | x axis |
| B. | y axis |
| C. | z axis |
| D. | parallel axis |
| Answer» B. y axis | |
| 10. |
Example of ionic solid is |
| A. | KBr |
| B. | NaCl |
| C. | both a and b |
| D. | sugar |
| Answer» D. sugar | |
| 11. |
Covalent bond is stronger than Hydrogen bonding about |
| A. | thirty times |
| B. | sixty times |
| C. | twenty times |
| D. | seventy times |
| Answer» D. seventy times | |
| 12. |
Coordination number of sodium ions in sodium chloride is |
| A. | 6 |
| B. | 7 |
| C. | 8 |
| D. | 9 |
| Answer» B. 7 | |
| 13. |
Boiling point is changed by change in |
| A. | volume |
| B. | density |
| C. | force |
| D. | external pressure |
| Answer» E. | |
| 14. |
Giant ionic structures are also name given to |
| A. | ionic lattice |
| B. | crystal lattice |
| C. | metallic lattice |
| D. | covalent lattice |
| Answer» B. crystal lattice | |
| 15. |
Lattice energy is usually taken for |
| A. | 2 moles |
| B. | 3 moles |
| C. | 1 mole |
| D. | 5 moles |
| Answer» D. 5 moles | |
| 16. |
Ionic crystals can perform |
| A. | ionic reactions |
| B. | covalent reactions |
| C. | slow reactions |
| D. | gaseous reactions |
| Answer» B. covalent reactions | |
| 17. |
Metals looks shiny because of excitation and deexcitation of |
| A. | protons |
| B. | electrons |
| C. | neutrons |
| D. | antineutrons |
| Answer» C. neutrons | |
| 18. |
Ionic compounds only conduct electricity when they are in a state |
| A. | solid |
| B. | liquid |
| C. | gas |
| D. | molten |
| Answer» E. | |
| 19. |
Electrical property of covalent solids include that they are |
| A. | conductors |
| B. | semi conductors |
| C. | non conductors |
| D. | frequent conductors |
| Answer» D. frequent conductors | |
| 20. |
Tetragonal crystal system in which number of axis having equal length are |
| A. | two |
| B. | three |
| C. | four |
| D. | five |
| Answer» B. three | |
| 21. |
Two angles are of 90 degree in a crystal system, is called as |
| A. | cubic system |
| B. | tetragonal system |
| C. | monoclinic system |
| D. | hexagonal system |
| Answer» D. hexagonal system | |
| 22. |
Substances which are solids are |
| A. | soft |
| B. | rigid |
| C. | elastic like |
| D. | spongy |
| Answer» C. elastic like | |
| 23. |
Heat absorbed by one mole of solid to melt is heat of |
| A. | absorption |
| B. | fusion |
| C. | vaporization |
| D. | boiling |
| Answer» C. vaporization | |
| 24. |
In crystalline solids atoms and ions are arranged in |
| A. | regular three dimensional pattern |
| B. | irregular three dimensional pattern |
| C. | simple two dimensions |
| D. | one dimension |
| Answer» B. irregular three dimensional pattern | |
| 25. |
Many small particles combine in crystals to form |
| A. | crystals |
| B. | unit cell |
| C. | lattice |
| D. | array |
| Answer» C. lattice | |
| 26. |
Molecules looses their perfect alignment due to |
| A. | volume difference |
| B. | shape |
| C. | electrons |
| D. | Thermal energy |
| Answer» E. | |
| 27. |
Diamond is soluble in |
| A. | water |
| B. | carbon tetrachloride |
| C. | benzene |
| D. | no solvent |
| Answer» E. | |
| 28. |
Forces which hold ionic solids together are |
| A. | electrostatic forces |
| B. | weak forces |
| C. | van der waal forces |
| D. | London dispersion forces |
| Answer» B. weak forces | |
| 29. |
Direction in which graphite cannot conduct is |
| A. | perpendicular |
| B. | parallel |
| C. | diagonal |
| D. | bisectional |
| Answer» B. parallel | |
| 30. |
In metallic bond valence electrons are attracted by |
| A. | anions |
| B. | cations |
| C. | atoms |
| D. | neutrons |
| Answer» C. atoms | |
| 31. |
Size and shape of unit cell of crystal help us to measure |
| A. | qualitative aspect |
| B. | quantitative aspect |
| C. | surface area |
| D. | bottom area |
| Answer» C. surface area | |
| 32. |
Lattice energy of KCl is measured in kilojoule per mole which is |
| A. | −690 |
| B. | −900 |
| C. | −890 |
| D. | −560 |
| Answer» B. −900 | |
| 33. |
Energy required to break one mole of solid in ionic crystals is called |
| A. | free energy |
| B. | lattice energy |
| C. | heat energy |
| D. | polar energy |
| Answer» C. heat energy | |
| 34. |
London dispersion forces were explained in |
| A. | 1978 |
| B. | 1980 |
| C. | 1987 |
| D. | 1930 |
| Answer» E. | |
| 35. |
8.6kJ/mole is enthalpy of vaporization for |
| A. | iodine |
| B. | methane |
| C. | hexane |
| D. | sulphurdioxide |
| Answer» C. hexane | |
| 36. |
NaF has lattice energy in kilo joule per mole, which is |
| A. | −833 |
| B. | −895 |
| C. | −690 |
| D. | −900 |
| Answer» C. −690 | |
| 37. |
Vapor pressure is measured by taking difference in liquid pressure and |
| A. | mercury pressure |
| B. | glass pressure |
| C. | container pressure |
| D. | atmospheric pressure |
| Answer» E. | |
| 38. |
Iodine which occurs at room temperature is |
| A. | solid |
| B. | liquid |
| C. | gas |
| D. | plasma |
| Answer» B. liquid | |
| 39. |
A molecule or ion with one or more lone pairs of electrons available to donate to a transition metal ion is called a |
| A. | ligand |
| B. | ion |
| C. | dentate |
| D. | none of above |
| Answer» B. ion | |
| 40. |
At normal temperature ionic solids show existence as |
| A. | liquids |
| B. | solids |
| C. | gases |
| D. | plasma |
| Answer» C. gases | |
| 41. |
Cubic close packing of metals is also known as |
| A. | hexagonal |
| B. | face centered cubic |
| C. | linear |
| D. | circular |
| Answer» C. linear | |
| 42. |
Usually crystalline solids are divided into |
| A. | two types |
| B. | three types |
| C. | four types |
| D. | five types |
| Answer» D. five types | |
| 43. |
When size of cation is increased lattice energy is |
| A. | decreased |
| B. | increased |
| C. | remains same |
| D. | converted |
| Answer» B. increased | |
| 44. |
Boiling point for carbon sulphide in degree Celsius is |
| A. | 40 |
| B. | 56 |
| C. | 46.3 |
| D. | 70 |
| Answer» D. 70 | |
| 45. |
Angles between lengths in tetragonal system are |
| A. | 60 degree |
| B. | 90 degree |
| C. | 50 degree |
| D. | 40 degree |
| Answer» C. 50 degree | |
| 46. |
With respect to thermal conductivity metallic particles are |
| A. | insulators |
| B. | conductors |
| C. | no effect |
| D. | stay neutral |
| Answer» C. no effect | |
| 47. |
In a suitable temperature liquid crystals are part of |
| A. | room thermometers |
| B. | clinical thermometers |
| C. | ear thermometers |
| D. | electrostatic thermometer |
| Answer» B. clinical thermometers | |
| 48. |
London dispersion forces are present among |
| A. | polar compounds |
| B. | covalent compounds |
| C. | non polar compounds |
| D. | solids |
| Answer» D. solids | |
| 49. |
Glass is an example of |
| A. | simple solids |
| B. | compound solids |
| C. | crystalline solids |
| D. | amorphous solids |
| Answer» E. | |
| 50. |
System in which no axes and no angle is equal, is called as |
| A. | triclinic system |
| B. | cubic system |
| C. | hexagonal system |
| D. | monoclinic system |
| Answer» B. cubic system | |