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. |
The error due to manually stopping a stopwatch is termed as |
| A. | human reaction error |
| B. | climax error |
| C. | reactibility error |
| D. | human reaction time |
| Answer» E. | |
| 2. |
A small amount of chlorine added to water can |
| A. | kill bacteria |
| B. | purify it |
| C. | all of them |
| D. | safer to drink |
| Answer» D. safer to drink | |
| 3. |
The weak forces between molecules are called |
| A. | intermolecular forces |
| B. | molecular forces |
| C. | none |
| D. | intramolecular forces |
| Answer» B. molecular forces | |
| 4. |
The unit for pressure used in weather maps is the millibar. 1 millibar is equal to |
| A. | 100 kPa |
| B. | 1000 bar |
| C. | 1 atm |
| D. | 100 Pa |
| Answer» E. | |
| 5. |
Elements of D-block are mainly |
| A. | metals |
| B. | transitional elements |
| C. | noble gases |
| D. | alkali |
| Answer» C. noble gases | |
| 6. |
Ceramics can conduct |
| A. | electricity |
| B. | heat |
| C. | Do not conduct both |
| D. | both a and b |
| Answer» D. both a and b | |
| 7. |
Lemon juice has a pH of |
| A. | 6 |
| B. | 2 |
| C. | 12 |
| D. | 8 |
| Answer» C. 12 | |
| 8. |
Acid rain has a pH |
| A. | 3 |
| B. | well below 3 |
| C. | well above 4 |
| D. | 4 |
| Answer» E. | |
| 9. |
To determine the mass of product one must use the |
| A. | molar mass of reactants |
| B. | mass of reactants |
| C. | All of Above |
| D. | the balanced equation |
| Answer» D. the balanced equation | |
| 10. |
A base which is soluble in water is called |
| A. | alkali |
| B. | hydrous |
| C. | All of Above |
| D. | basic |
| Answer» B. hydrous | |
| 11. |
The French scientists Lavoisier and Laplace first detected the amount of heat by using |
| A. | ice calorimeter |
| B. | specific calorimeter |
| C. | solvent calorimeter |
| D. | solute calorimeter |
| Answer» B. specific calorimeter | |
| 12. |
The standard symbol for specific heat capacity is |
| A. | c |
| B. | h |
| C. | e |
| D. | q |
| Answer» B. h | |
| 13. |
A skateboarder is moving at a speed of 5 m s-1 with a mass of 20 kg, its Ek would be |
| A. | 1000 J |
| B. | 250 J |
| C. | 500 J |
| D. | 2000 J |
| Answer» C. 500 J | |
| 14. |
Two sides of a rectangular table are 0.8 m and 1.2 m, the displacement of spider when it runs a distance of 2.0 m is |
| A. | 1.4 m |
| B. | 1.5 m |
| C. | 1.7 m |
| D. | 1.6 m |
| Answer» B. 1.5 m | |
| 15. |
The pH of the Phosphoric acid is |
| A. | 2 |
| B. | 1 |
| C. | 4 |
| D. | 3 |
| Answer» B. 1 | |
| 16. |
Hydrated iron (III) is called |
| A. | rust |
| B. | oxide |
| C. | All of Above |
| D. | reducing agent |
| Answer» B. oxide | |
| 17. |
No fixed volumes is a characteristic of |
| A. | solids |
| B. | liquids |
| C. | None of Above |
| D. | gases |
| Answer» E. | |
| 18. |
Nylon is a very useful fiber used in clothing industry due to its |
| A. | strength |
| B. | elasticity |
| C. | all of them |
| D. | low density |
| Answer» D. low density | |
| 19. |
Alcohols are produced by passing alkenes through |
| A. | acid |
| B. | steam |
| C. | alkali |
| D. | base |
| Answer» C. alkali | |
| 20. |
In ethane C2H6, |
| A. | repulsive forces are maximized |
| B. | all bonds repel each other equally |
| C. | the repulsive forces are completely diminished |
| D. | repulsive forces are minimized. |
| Answer» C. the repulsive forces are completely diminished | |
| 21. |
When there is a link between product and reactant with a transfer of proton that pair is called as |
| A. | proton pair |
| B. | conjugate pair |
| C. | base pair |
| D. | acid pair |
| Answer» C. base pair | |
| 22. |
The particles which move towards cathode are called |
| A. | cations |
| B. | anions |
| C. | none |
| D. | both a and b |
| Answer» B. anions | |
| 23. |
The rate of reaction is increased with the increase in |
| A. | temperature |
| B. | concentration of reactant |
| C. | None |
| D. | both a and b |
| Answer» E. | |
| 24. |
Al2Cl6 is an example of |
| A. | electrovalent bonds |
| B. | covalent bonds |
| C. | double covalent bonds |
| D. | dative covalent bonds |
| Answer» E. | |
| 25. |
Value of Ka can be calculated by determining |
| A. | pH of solution |
| B. | concentration of acid |
| C. | none |
| D. | both a and b |
| Answer» E. | |
| 26. |
In a dry cell, leaking occurs because |
| A. | carbon electrode has dissolved away |
| B. | zinc electrode has dissolved away |
| C. | polarization can not more be prevented at carbon electrode |
| D. | magnese oxide has been used up |
| Answer» C. polarization can not more be prevented at carbon electrode | |
| 27. |
In order to find the internal structure of nucleus, the electrons should be accelerated by voltages up to |
| A. | 107 V |
| B. | 105 V |
| C. | 1011 V |
| D. | 109 V |
| Answer» E. | |
| 28. |
Oxygen contains double bond but still needs to break its one mole with help so energy equal to |
| A. | 946kj |
| B. | 496kj |
| C. | 469kj |
| D. | 649kj |
| Answer» C. 469kj | |
| 29. |
The liquid in an electrolytic cell should always flows towards |
| A. | cathode |
| B. | anode |
| C. | nowhere |
| D. | all around |
| Answer» B. anode | |
| 30. |
ATP is synthesized in |
| A. | Ribosome's |
| B. | Cytoplasm |
| C. | Nucleus |
| D. | Mitochondria |
| Answer» E. | |
| 31. |
All nylons are made by reactions amine group and |
| A. | acyl-chloride group |
| B. | carboxylic acids |
| C. | alkyls |
| D. | both a and b |
| Answer» E. | |
| 32. |
If the proportion of particles with energy greater than activation energy increases the reaction will |
| A. | speed up |
| B. | slow down |
| C. | end up |
| D. | remains constant |
| Answer» C. end up | |
| 33. |
The change from liquid in to the gaseous state is known as |
| A. | condensation |
| B. | vaporization |
| C. | none |
| D. | both a and b |
| Answer» C. none | |
| 34. |
Building material of cell wall is carried through the |
| A. | Pinocytosis |
| B. | Phagocytosis |
| C. | Endocytosis |
| D. | Exocytosis |
| Answer» E. | |
| 35. |
the change in g.p.e can be written as |
| A. | mh |
| B. | mgh |
| C. | none of above |
| D. | mg |
| Answer» C. none of above | |
| 36. |
Graphite have high melting and boiling points but they are |
| A. | do not conduct heat |
| B. | soft |
| C. | All of Above |
| D. | do not conduct electricity |
| Answer» C. All of Above | |
| 37. |
The hydraulics are |
| A. | bad example of pressure |
| B. | good example of pressure |
| C. | bad example of pressure in liquids |
| D. | good example of pressure in liquids |
| Answer» E. | |
| 38. |
In NaCl, the oxidation number of Cl2 is reduced from zero to |
| A. | +1 |
| B. | +2 |
| C. | −2 |
| D. | −1 |
| Answer» E. | |
| 39. |
The molecules of alcohol have |
| A. | dipole forces |
| B. | hydrogen bonding |
| C. | all of them |
| D. | van der vaal's forces |
| Answer» C. all of them | |
| 40. |
Electronegativity refers to the |
| A. | attraction of an atom for the electrons in a bond |
| B. | sea of electrons in elements |
| C. | contact points in molecular structures |
| D. | attraction of neutrons |
| Answer» B. sea of electrons in elements | |
| 41. |
The number of electrons are always equal to number of protons in a |
| A. | positive ion |
| B. | neutral atom |
| C. | isotope |
| D. | negative ion |
| Answer» C. isotope | |
| 42. |
Strong acids completely ionizes in |
| A. | water |
| B. | alcohol |
| C. | alkalis |
| D. | gases |
| Answer» B. alcohol | |
| 43. |
The rare constant is the |
| A. | k |
| B. | proportionality constant |
| C. | none |
| D. | both a and b |
| Answer» E. | |
| 44. |
The process in which solid is turned to gas is termed as |
| A. | boiling |
| B. | solidification |
| C. | sublimation |
| D. | condensation |
| Answer» D. condensation | |
| 45. |
The symbol which represents bond energy is |
| A. | E |
| B. | B |
| C. | none |
| D. | H |
| Answer» B. B | |
| 46. |
In FM, the frequency of modulated wave varies with |
| A. | time |
| B. | amplitude |
| C. | none of above |
| D. | wavelength |
| Answer» B. amplitude | |
| 47. |
The strength and high melting point of ceramics is due to their |
| A. | malleability |
| B. | density |
| C. | All of Above |
| D. | giant molecular structure |
| Answer» E. | |
| 48. |
When the gas liquefies, the molecules lose kinetic energy and experience increase |
| A. | volume |
| B. | forces of attraction |
| C. | pressure |
| D. | density |
| Answer» C. pressure | |
| 49. |
In production of phenyl amine it is separated from reaction mixture by process of |
| A. | extraction |
| B. | steam distillation |
| C. | none |
| D. | both a and b |
| Answer» C. none | |
| 50. |
The symbol for enthalpy is |
| A. | H |
| B. | E |
| C. | Y |
| D. | P |
| Answer» B. E | |