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. |
A bond which is not symmetrical is a |
| A. | pi bond |
| B. | sigma bond |
| C. | none |
| D. | both a and b |
| Answer» B. sigma bond | |
| 2. |
The alkaline solution of Ca(OH) |
| A. | 11 |
| B. | 14 |
| C. | 9 |
| D. | 12 |
| Answer» B. 14 | |
| 3. |
The elements which have same number of protons but different number of neutrons are called as |
| A. | isomers |
| B. | isotopes |
| C. | none |
| D. | allotropes |
| Answer» C. none | |
| 4. |
In gases, diffusion occurs because |
| A. | Molecules of the gases attract each other |
| B. | Molecules of the gases move in random motion |
| C. | Molecules of the gases repel each other |
| D. | Molecules of the gases that are present in a higher concentration exert a higher pressure |
| Answer» C. Molecules of the gases repel each other | |
| 5. |
The carbonates and nitrates of group II elements decompose upon |
| A. | mixing |
| B. | heating |
| C. | all of them |
| D. | reactions |
| Answer» C. all of them | |
| 6. |
By lowering activation energy the mixture will have sufficient energy to |
| A. | react |
| B. | reduced |
| C. | act |
| D. | produce |
| Answer» B. reduced | |
| 7. |
In Brazil they used instead of petrol for car fuel sometimes is |
| A. | gasoline |
| B. | ethanol |
| C. | all of them |
| D. | alcohol |
| Answer» C. all of them | |
| 8. |
Which of these metals react more vigorously with water? |
| A. | Ca |
| B. | Mg |
| C. | both of these |
| D. | None of Above |
| Answer» B. Mg | |
| 9. |
The work done by an elevator is 1500 J with a constant force of 150 N, the distance covered by the elevator is |
| A. | 1650 m |
| B. | 1350 m |
| C. | 10 m |
| D. | 225000 m |
| Answer» D. 225000 m | |
| 10. |
The ions which are composed of more than one type of atom are called |
| A. | covalent compounds |
| B. | ionic compounds |
| C. | ionic ions |
| D. | compound ions |
| Answer» E. | |
| 11. |
Energy can be |
| A. | destroyed or transferred |
| B. | converted or transferred |
| C. | created or destroyed |
| D. | created or transferred |
| Answer» C. created or destroyed | |
| 12. |
1 mm Hg is equal to |
| A. | 1.013 × 10 |
| B. | Pa |
| C. | 1 atm |
| D. | 1.316 × 10^-3 atm |
| E. | 133.29 atm |
| Answer» D. 1.316 × 10^-3 atm | |
| 13. |
The motion that is repeated at regular internals is termed as |
| A. | Oscillation |
| B. | Vibration |
| C. | Periodic motion |
| D. | Ventilation |
| Answer» D. Ventilation | |
| 14. |
Table mat is a good example of |
| A. | conductor of heat |
| B. | insulator of heat |
| C. | conductor of electromagnetic waves |
| D. | insulator of electromagnetic waves |
| Answer» C. conductor of electromagnetic waves | |
| 15. |
The density of a substance is defined as |
| A. | Density = Mass ⁄ Volume |
| B. | Density = Mass × Volume |
| C. | None of the above |
| D. | Density = Volume ⁄ Mass |
| Answer» B. Density = Mass × Volume | |
| 16. |
Electrochemical cell is achieved by connecting two |
| A. | electrodes |
| B. | ions |
| C. | all of them |
| D. | half cells |
| Answer» E. | |
| 17. |
An estimated amount of 10,000 ethene monomers bond together to make polymer chain of |
| A. | PVC |
| B. | poly(ethene) |
| C. | all of them |
| D. | polymers |
| Answer» C. all of them | |
| 18. |
The difference between mass and weight is |
| A. | mass and weight both are force |
| B. | mass is a force and weight is a quantity |
| C. | mass is quantity and weight is force |
| D. | mass and weight both are quantities |
| Answer» D. mass and weight both are quantities | |
| 19. |
In the process of condensation, thermal energy is |
| A. | given out |
| B. | taken in |
| C. | thermal energy isn't needed |
| D. | neither given out nor taken in |
| Answer» B. taken in | |
| 20. |
The pressure in our body is equal to |
| A. | 1 exosphere |
| B. | 1 ozone |
| C. | 1 troposphere |
| D. | 1 atmosphere |
| Answer» E. | |
| 21. |
Formula of benzene is |
| A. | C2H6 |
| B. | C6H6 |
| C. | CH |
| D. | C6H12 |
| Answer» C. CH | |
| 22. |
The volume occupied by 0.500 mol of carbon dioxide at a pressure of 150kPa at the temperature of 19 °C will be |
| A. | 8.89 dm3 |
| B. | 8.09 dm3 |
| C. | 8.13 dm3 |
| D. | 9.09 dm3 |
| Answer» C. 8.13 dm3 | |
| 23. |
The rate of reaction is the change in amount of reactants or products in specific |
| A. | density |
| B. | volume |
| C. | area |
| D. | time |
| Answer» E. | |
| 24. |
Moment of force is defined as |
| A. | Moment = F x d |
| B. | Moment = F/d |
| C. | Moment = F - d |
| D. | Moment = F + d |
| Answer» B. Moment = F/d | |
| 25. |
In order to form NaCl, |
| A. | Na and Cl shall be heated together |
| B. | Na and Cl shall be heated separately first |
| C. | All of Above are possible |
| D. | Na shall be heated first and then plunged into the jar of O |
| E. | |
| Answer» E. | |
| 26. |
Hydrocarbons are main source of |
| A. | diesel |
| B. | petrol |
| C. | all of them |
| D. | kerosene |
| Answer» D. kerosene | |
| 27. |
The regular arrangement in which atoms are closely packed together is called a |
| A. | crystal lattice |
| B. | lattice |
| C. | none |
| D. | both a and b |
| Answer» C. none | |
| 28. |
As the collision of particles in liquids and gases is lesser, so the flow of kinetic energy would be |
| A. | slower |
| B. | faster |
| C. | zero |
| D. | normal |
| Answer» B. faster | |
| 29. |
A person of mass 50 kg flies to moon, his weight at the moon would be (earth's gravity = 10 ms |
| A. | 500 N |
| B. | 31.25 N |
| C. | 80 N |
| D. | 51.6 N |
| Answer» D. 51.6 N | |
| 30. |
Every temperature measuring instrument makes use of a physical property of a substance in order to measure temperature objectively, which physical property is used by Thermocouple? |
| A. | Volume of a fixed mass of liquid |
| B. | Electromotive force |
| C. | Pressure of a fixed mass of gas at constant volume |
| D. | Resistance of a piece of metal |
| Answer» C. Pressure of a fixed mass of gas at constant volume | |
| 31. |
Carboxylic acids are very |
| A. | reactive |
| B. | unreactive |
| C. | none |
| D. | easily made |
| Answer» C. none | |
| 32. |
Values are bond energies refer to broken bonds hence they are always |
| A. | negative |
| B. | positive |
| C. | constant |
| D. | neutral |
| Answer» C. constant | |
| 33. |
Gases are |
| A. | very little compressible |
| B. | very compressible |
| C. | B and C both |
| D. | incompressible |
| Answer» C. B and C both | |
| 34. |
Fluorine can be stored in a metal lined with nickel and copper alloy to protect from |
| A. | outside |
| B. | further reaction |
| C. | all of them |
| D. | water |
| Answer» C. all of them | |
| 35. |
Light wave is a good example of |
| A. | longitudinal waves |
| B. | transverse waves |
| C. | none of the waves |
| D. | both transverse and longitudinal waves |
| Answer» C. none of the waves | |
| 36. |
Catalysis in which catalyst is in a different phase to reaction mixture is |
| A. | heterogeneous catalysis |
| B. | homogeneous catalysis |
| C. | none |
| D. | both a and b |
| Answer» B. homogeneous catalysis | |
| 37. |
Ionization energy is represented by a symbol ?H1 whose units are |
| A. | kJmol-10 |
| B. | kJmol-1 |
| C. | kJmol-2 |
| D. | kJmol-11 |
| Answer» C. kJmol-2 | |
| 38. |
Intermolecular forces can be defined as |
| A. | force between two substances |
| B. | force between two solids |
| C. | force between liquid and gas |
| D. | force between two atoms or molecules |
| Answer» E. | |
| 39. |
The empirical formula for propene is |
| A. | C2H4 |
| B. | CH2 |
| C. | C2H |
| D. | C6H12 |
| Answer» C. C2H | |
| 40. |
The SI unit of specific heat capacity is |
| A. | joule ⁄ kilogram |
| B. | joule |
| C. | joule ⁄ kelvin |
| D. | joule ⁄ (kilogram × kelvin) |
| Answer» E. | |
| 41. |
While going through a heap of junk in her garage, Jackie found an uncalibrated mercury thermometer. After a few experiments, she succeeded in calibrating it. Her notes show that the ice point of the thermometer corresponds to 3 cm while the steam point corresponds to 30 cm of mercury. If Jackies calculations are fine then length = 10 cm would correspond to |
| A. | 24 °C |
| B. | 26 °C |
| C. | 20 °C |
| D. | 22 °C |
| Answer» C. 20 °C | |
| 42. |
A meter rule can measure a maximum length of |
| A. | 1 meter |
| B. | 0.5 meter |
| C. | 2 meter |
| D. | 1.5 meter |
| Answer» B. 0.5 meter | |
| 43. |
Number of grams of compound needed to saturate 100g of water is defined for |
| A. | volatility |
| B. | solubility |
| C. | all of them |
| D. | polarity |
| Answer» C. all of them | |
| 44. |
Electrolysis is used to |
| A. | purify metals |
| B. | produce metals |
| C. | none |
| D. | both a and b |
| Answer» E. | |
| 45. |
The SI unit for energy and work is |
| A. | Pascals |
| B. | Joules |
| C. | Newton |
| D. | Ohms |
| Answer» C. Newton | |
| 46. |
The number of carbon atoms in longest chain of one molecule is indicated in its |
| A. | root |
| B. | stem |
| C. | all of them |
| D. | empirical formula |
| Answer» C. all of them | |
| 47. |
Some people believe that blue babies are born due to water containing |
| A. | oxygen |
| B. | nitrates |
| C. | all of them |
| D. | nitrogen |
| Answer» C. all of them | |
| 48. |
Any specie will always be reduced if oxidation state is |
| A. | gained |
| B. | oxidized |
| C. | lost |
| D. | reduced |
| Answer» E. | |
| 49. |
When you apply a duedorent on your body, the cooling effect on the skin is due to |
| A. | evaporation of the liquid |
| B. | boiling of the perfume |
| C. | condensing of the duedorent |
| D. | melting of the liquid |
| Answer» B. boiling of the perfume | |
| 50. |
The first element whose electron lies in 3d sub-shell is |
| A. | scandium |
| B. | gallium |
| C. | aluminum |
| D. | boron |
| Answer» B. gallium | |