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 SI unit of energy is |
| A. | joule |
| B. | newton-meter |
| C. | None of the above |
| D. | watt |
| Answer» B. newton-meter | |
| 2. |
Acyl chlorides are highly |
| A. | reactive |
| B. | unreactive |
| C. | all of them |
| D. | stable |
| Answer» B. unreactive | |
| 3. |
The particles involved in the movement within material are |
| A. | electrons |
| B. | protons |
| C. | none of above |
| D. | neutrons |
| Answer» B. protons | |
| 4. |
In fluids, the kinetic energy is due to |
| A. | the vibration of particles |
| B. | the movement of particles |
| C. | the intermolecular forces |
| D. | the collision of particles |
| Answer» C. the intermolecular forces | |
| 5. |
Factors affecting the speed of chemical reactions does not include |
| A. | particle size of reactants |
| B. | pressure on reactants |
| C. | volume of reactants |
| D. | concentration of reactants |
| Answer» D. concentration of reactants | |
| 6. |
Which one of the following statements related to the process of boiling is incorrect? |
| A. | Temperature may change during boiling |
| B. | Boiling occurs at fixed temperature |
| C. | The process takes place within the liquid |
| D. | Bubbles are formed in the liquid during boiling |
| Answer» B. Boiling occurs at fixed temperature | |
| 7. |
When carbon ions react with carbon dioxide gas, the product will be |
| A. | ethane |
| B. | methane |
| C. | carbon monoxide |
| D. | propane |
| Answer» D. propane | |
| 8. |
The shape of s orbital is |
| A. | octagonal |
| B. | tetrahedral |
| C. | round |
| D. | spherical |
| Answer» E. | |
| 9. |
The resistance of a steel wire at ice point is 70 Ω and 110 Ω at steam point, and the resistance of wire is 71 Ω the room temperature would be |
| A. | 5 °C |
| B. | 2.5 °C |
| C. | 10 °C |
| D. | 7.5 °C |
| Answer» C. 10 °C | |
| 10. |
In Na2CO3.10H2O, percentage of Carbon is |
| A. | 0.0422 |
| B. | 0.4201 |
| C. | None of Above |
| D. | 0.042 |
| Answer» E. | |
| 11. |
Alkenes mostly follow reaction of |
| A. | elimination reaction |
| B. | addition reaction |
| C. | all of them |
| D. | substitution reaction |
| Answer» C. all of them | |
| 12. |
The size on atom can be described by help of |
| A. | metallic radius |
| B. | atomic radius |
| C. | van der vaal's radius |
| D. | covalent radius |
| Answer» B. atomic radius | |
| 13. |
Oxides formed by group IV have oxidation state |
| A. | 4 |
| B. | 2 |
| C. | a and b |
| D. | 1 |
| Answer» D. 1 | |
| 14. |
The bombardment of X-rays on molecules and measuring energy of electrons is done by method |
| A. | spectroscopy |
| B. | spectrometry |
| C. | X-ray spectroscopy |
| D. | X-ray spectrometry |
| Answer» D. X-ray spectrometry | |
| 15. |
The mixture of metal or metals with non-metals gives off an |
| A. | allotrope |
| B. | alloy |
| C. | lattice |
| D. | isotope |
| Answer» C. lattice | |
| 16. |
The solid melts because the |
| A. | thermal energy increases the rate of kinetic energy |
| B. | intermolecular bonds get weak |
| C. | particles start vibrating more vigorously due to thermal energy |
| D. | thermal energy helps in breaking the intermolecular bonds between the particles |
| Answer» E. | |
| 17. |
The Cardiovascular System can not damaged by |
| A. | CO |
| B. | tar |
| C. | any of these |
| D. | Nicotine |
| Answer» C. any of these | |
| 18. |
The halogens reacts with non-metals forming |
| A. | covalent bond |
| B. | ionic bond |
| C. | all of them |
| D. | coordinate bond |
| Answer» B. ionic bond | |
| 19. |
1Ω is equal to |
| A. | 1 V A-1 |
| B. | 1 V A-2 |
| C. | 2 V A-1 |
| D. | 1 V-1 A |
| Answer» B. 1 V A-2 | |
| 20. |
An electrical wire resists 600 Ω at ice point and 700 Ω at steam point, and the resistance of wire is 610 Ω the room temperature would be |
| A. | 10 °C |
| B. | 15 °C |
| C. | 50 °C |
| D. | 25 °C |
| Answer» B. 15 °C | |
| 21. |
The bond angles in CH4 are |
| A. | 87.5° |
| B. | 180° |
| C. | 109.5° |
| D. | 120° |
| Answer» D. 120° | |
| 22. |
The contact force always acts at |
| A. | right angles to the surface producing it |
| B. | acute angles to the surface producing it |
| C. | parallel to the surface producing it |
| D. | obtuse angle to the surface producing it |
| Answer» B. acute angles to the surface producing it | |
| 23. |
For each Adenosine Triphosphate (ATP) molecule is used, |
| A. | three potassium ions are pumped out of the cell |
| B. | two potassium ions are pumped out of the cell |
| C. | three potassium ions are pumped into the cell |
| D. | two potassium ions are pumped into the cell |
| Answer» E. | |
| 24. |
Heat absorbed or released by the same state of matter is represented by |
| A. | Q = mc/Δθ |
| B. | Q = mcΔθ |
| C. | Q = Δθ/mc |
| D. | Q = m/cΔθ |
| Answer» C. Q = Δθ/mc | |
| 25. |
Nitration of a benzene molecule shows reaction of |
| A. | addition reaction |
| B. | electrophilic substitution |
| C. | all of them |
| D. | nucleophillic substitution |
| Answer» C. all of them | |
| 26. |
The two quantities that have same SI unit are |
| A. | Efficiency and Work |
| B. | Efficiency and Power |
| C. | Energy and Power |
| D. | Work and Energy |
| Answer» E. | |
| 27. |
Changes in oxidation number of ions which are involved in catalysis is done in |
| A. | heterogeneous catalysis |
| B. | homogeneous catalysis |
| C. | none |
| D. | both a and b |
| Answer» C. none | |
| 28. |
Isolated atoms are found in |
| A. | non-metals |
| B. | metals |
| C. | noble gases |
| D. | transition metals |
| Answer» D. transition metals | |
| 29. |
The specific latent heat of hot chocolate is 60 J kg-1 and its latent heat is 3 J, the mass of the hot chocolate would be |
| A. | 20 J |
| B. | 180 J |
| C. | 57 J |
| D. | 63 J |
| Answer» B. 180 J | |
| 30. |
Nucleic acids and chlorophyll are synthesized by help of |
| A. | carbon |
| B. | nitrogen |
| C. | leaves |
| D. | fossils |
| Answer» C. leaves | |
| 31. |
The SI Unit for light intensity is |
| A. | Watts |
| B. | Candela |
| C. | Kelvin |
| D. | Joules |
| Answer» C. Kelvin | |
| 32. |
The periodic time of a simple pendulum depends on |
| A. | The collective mass of the pendulum bob and thread |
| B. | The mass of the pendulum bob |
| C. | None of the above |
| D. | The length of the pendulum |
| Answer» E. | |
| 33. |
The reactions which cost a lot of money are the ones which are |
| A. | reduction reaction |
| B. | oxidation reaction |
| C. | none |
| D. | re-dox reaction |
| Answer» C. none | |
| 34. |
The action site of cholera virus is |
| A. | large intestine |
| B. | small intestine |
| C. | stomach |
| D. | faeces of infected person |
| Answer» C. stomach | |
| 35. |
Fractional distillation can |
| A. | separate liquids whose boiling points are close |
| B. | not separate liquids whose boiling points are close |
| C. | all of these |
| D. | separate liquids whose boiling points are very high |
| Answer» B. not separate liquids whose boiling points are close | |
| 36. |
The strength of magnetic field of solenoid can be increased by adding core made of |
| A. | ferrous |
| B. | copper |
| C. | aluminum |
| D. | silver |
| Answer» B. copper | |
| 37. |
If hydrogen and alkene are passed over finely divided nickel it gives off |
| A. | alkanes |
| B. | alcohol |
| C. | ketone |
| D. | aldehydes |
| Answer» B. alcohol | |
| 38. |
Ammonia production is the process called |
| A. | exothermic |
| B. | endothermic |
| C. | none |
| D. | both a and b |
| Answer» B. endothermic | |
| 39. |
Water has a pH of |
| A. | 7 |
| B. | 5 |
| C. | 11 |
| D. | 9 |
| Answer» B. 5 | |
| 40. |
During a chemical reaction, atoms can not be |
| A. | destroyed |
| B. | created |
| C. | none |
| D. | both a and b |
| Answer» E. | |
| 41. |
Common ammonium salts includes |
| A. | ammonium nitrate |
| B. | Ammonium chloride |
| C. | all of them |
| D. | ammonium sulfate |
| Answer» D. ammonium sulfate | |
| 42. |
If we observe a pebble in a pool, the pebble would appear to be |
| A. | of same depth in the water as it has |
| B. | deeper in the water than it really is |
| C. | invisible |
| D. | nearer to the surface than it really is |
| Answer» E. | |
| 43. |
The identical bonds in molecules which possesses two type of bonds have bond energies totally |
| A. | unique |
| B. | different |
| C. | constant |
| D. | same |
| Answer» C. constant | |
| 44. |
Vector quantity in four of the following is |
| A. | Weight |
| B. | Speed |
| C. | Time |
| D. | Mass |
| Answer» B. Speed | |
| 45. |
The dimer of AlCl3 is |
| A. | AlCl |
| B. | Al2Cl3 |
| C. | dimer of AlCl3 does not exist |
| D. | Al2Cl6 |
| Answer» E. | |
| 46. |
The force of repulsion between electron pairs causes to remove electron with less |
| A. | energy |
| B. | heat |
| C. | electric path |
| D. | light |
| Answer» B. heat | |
| 47. |
Each 1 kg mass experiences force of |
| A. | 9.81 N |
| B. | 7 N |
| C. | 100 N |
| D. | 20 N |
| Answer» B. 7 N | |
| 48. |
During the process of solidification, when the liquid is being changed into solid, the temperature at that period would |
| A. | decrease |
| B. | increase |
| C. | may increase or decrease |
| D. | remain constant |
| Answer» E. | |
| 49. |
Types of structural isomerism are |
| A. | functional group isomerism |
| B. | position isomerism |
| C. | all of them |
| D. | chain isomerism |
| Answer» D. chain isomerism | |
| 50. |
The group II cations increase in ionic radius |
| A. | across the period |
| B. | down the group |
| C. | none |
| D. | both a and b |
| Answer» C. none | |