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 metallurgical process in which a metal is obtained in a fused state is called? |
| A. | smelting |
| B. | roasting |
| C. | calcinations |
| D. | froth floatation |
| Answer» B. roasting | |
| 2. |
The number of waves in n x 10th Bohr's orbit are? |
| A. | n2 |
| B. | n |
| C. | n-2 |
| D. | n3 |
| Answer» C. n-2 | |
| 3. |
The inexpensive and commonly used variety of glass is called soda glass. It is called so because? |
| A. | was used initially for making bottles of soda(carbonated drink) |
| B. | is made using soda(sodium carbonate) |
| C. | was initially used for storing sodium carbonate |
| D. | is made using soda lime |
| Answer» C. was initially used for storing sodium carbonate | |
| 4. |
The ore which is found in abundance in India is? |
| A. | monazite |
| B. | fluorspar |
| C. | bauxite |
| D. | magnetite |
| Answer» B. fluorspar | |
| 5. |
The monomer of polythene is? |
| A. | vinyl chloride |
| B. | ethylene |
| C. | ethyl alcohol |
| D. | None of the above |
| Answer» C. ethyl alcohol | |
| 6. |
Equal masses of oxygen, hydrogen and methane are kept under identical conditions. The ratio of the volumes of gases will be |
| A. | 2 : 16 : 2 |
| B. | 2 : 16 : 1 |
| C. | 1 : 16 : 2 |
| D. | 1 : 1 : 1 |
| Answer» D. 1 : 1 : 1 | |
| 7. |
The metal that is usually extracted from sea water is |
| A. | Ca |
| B. | Na |
| C. | K |
| D. | Mg |
| Answer» E. | |
| 8. |
The first metal used by man was |
| A. | iron |
| B. | copper |
| C. | gold |
| D. | bronze |
| Answer» C. gold | |
| 9. |
The human body is made up of several chemical elements; the element present in the highest proportion (65%) in the body is |
| A. | carbon |
| B. | hydrogen |
| C. | oxygen |
| D. | nitrogen |
| Answer» D. nitrogen | |
| 10. |
The hardest form of carbon is |
| A. | coke |
| B. | graphite |
| C. | diamond |
| D. | charcoal |
| Answer» D. charcoal | |
| 11. |
The gas used for artificial ripening of green fruit is |
| A. | ethylene |
| B. | ethane |
| C. | carbon dioxide |
| D. | acetylene |
| Answer» B. ethane | |
| 12. |
The iron ore magnetite consists of |
| A. | Fe2O3 |
| B. | Fe3OH4 |
| C. | FeCO3 |
| D. | 3Fe2O3 .. 3H2O |
| Answer» B. Fe3OH4 | |
| 13. |
The Latin word formica means ant. The name formic acid is derived from this Latin word because |
| A. | this acid, in ancient times, was used to eliminate ant-hills |
| B. | this corrosive acid is secreted by ants to drive away their enemies |
| C. | this acid was first obtained by the distillation of ants |
| D. | ants are attracted by the odour of this acid |
| Answer» D. ants are attracted by the odour of this acid | |
| 14. |
The main use of salt in the diet is to |
| A. | make the taste of food better |
| B. | produce in small amounts the hydrochloric acid required for the digestion of food |
| C. | ease the process of cooking |
| D. | increase the solubility of food particles in water |
| Answer» C. ease the process of cooking | |
| 15. |
The National Chemical Laboratory is situated in |
| A. | New Delhi |
| B. | Bangalore |
| C. | Pune |
| D. | Patna |
| Answer» D. Patna | |
| 16. |
Which of the following phenomenon is considered responsible for Global Warming? |
| A. | Greenhouse effect |
| B. | Fire in coal mines |
| C. | Dry farming |
| D. | Monsoon |
| E. | Trade winds |
| Answer» B. Fire in coal mines | |
| 17. |
Which of the following phenomenon is considered responsible for Global Warming? |
| A. | Greenhouse effect |
| B. | Fire in coal mines |
| C. | Dry farming |
| D. | Monsoon |
| E. | Trade winds |
| Answer» B. Fire in coal mines | |