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. |
Burning of methane (CH₄) gives off heat and |
| A. | carbon dioxide (gas) |
| B. | water (gas) |
| C. | hydrogen gas |
| D. | both a and b |
| Answer» E. | |
| 2. |
Water with lesser oxygen is known to |
| A. | cause water pollution |
| B. | disturb the balance of life in river |
| C. | be poisonous |
| D. | both a and b |
| Answer» E. | |
| 3. |
In order to form products from reactants, it is important to |
| A. | develop energy profile diagrams |
| B. | pass the transition barrier |
| C. | pass the energy barriers |
| D. | pass the activation energy tests |
| Answer» D. pass the activation energy tests | |
| 4. |
Endothermic reactions take place when |
| A. | energy given out in making bonds is less than the energy taken in for breaking bonds |
| B. | energy given out in making bonds is more than the energy taken in for breaking bonds |
| C. | energy given out in making bonds is equal to the energy taken in for breaking bonds |
| D. | none of these |
| Answer» B. energy given out in making bonds is more than the energy taken in for breaking bonds | |
| 5. |
Upon absorbing heat energy, ionic crystal results into |
| A. | other compounds |
| B. | ionic solution of same compound |
| C. | oxides of same compounds |
| D. | water as a byproduct |
| Answer» C. oxides of same compounds | |
| 6. |
Non-renewable fossil fuels include |
| A. | coal |
| B. | oil |
| C. | petrol |
| D. | all of these |
| Answer» E. | |
| 7. |
Conversion of Copper Hydroxide (Cu(OH)₂) into Copper Oxide (CuO) and water (H₂O) is an example of |
| A. | combustion |
| B. | Thermal decomposition |
| C. | Neutralization |
| D. | Respiration |
| Answer» C. Neutralization | |
| 8. |
Upon heating, sodium nitrate NaNO₃(s) gets converted into |
| A. | sodium oxide |
| B. | nitric acid |
| C. | sodium hydrogen oxide |
| D. | None of Above |
| Answer» E. | |
| 9. |
Conversion of carbonate into oxides and carbon dioxide is called as |
| A. | combustion |
| B. | Thermal decomposition |
| C. | Neutralization |
| D. | Respiration |
| Answer» C. Neutralization | |
| 10. |
In exothermic reactions, final energy content of products |
| A. | is lower than the energy contents of the reactants |
| B. | is higher than the energy contents of the reactants |
| C. | does not depend upon the energy content of the reactants |
| D. | forms highly stable compounds |
| Answer» B. is higher than the energy contents of the reactants | |
| 11. |
LPG is obtained by |
| A. | cooling methane |
| B. | cooling natural gas |
| C. | cooling carbon dioxide |
| D. | cooling nitrous oxide |
| Answer» C. cooling carbon dioxide | |