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 maximum biological magnification of DDT through food web is seen in ______________ |
| A. | Higher plants |
| B. | Man |
| C. | Algae |
| D. | Bacteria |
| Answer» C. Algae | |
| 2. |
Which microscopic-organism plays a vital role in nitrogen cycle ? |
| A. | Red algae |
| B. | Protozoa |
| C. | Virus |
| D. | Bacteria |
| Answer» E. | |
| 3. |
What helps to convert Biodegradable wastes into useful substances ? |
| A. | None of these |
| B. | Radioactive substances |
| C. | Bacteria |
| D. | Nuclear proteins |
| Answer» D. Nuclear proteins | |
| 4. |
Which crop is most susceptible to frost ? |
| A. | Black gram |
| B. | Red gram |
| C. | Wheat |
| D. | Cotton |
| Answer» D. Cotton | |
| 5. |
What is the most dangerous consequence of excessive deforestation ? |
| A. | None of these |
| B. | Loss of many valuable plants |
| C. | Soil erosion |
| D. | Loss of forest wealth |
| Answer» D. Loss of forest wealth | |
| 6. |
Which is the main factor that determines the balance of nature ? |
| A. | Availability of food |
| B. | Environmental pollution |
| C. | Human activities |
| D. | Habit and habitat |
| Answer» D. Habit and habitat | |
| 7. |
What is the largest source of pollution in the world ? |
| A. | Herbicides and insecticides |
| B. | Automobile exhausts |
| C. | Industrial effluents |
| D. | Sewage and garbage |
| Answer» E. | |
| 8. |
What are nutrients that are recycled in the atmosphere with the help of certain micro-organisms called ? |
| A. | None of these |
| B. | Consumers |
| C. | Producers |
| D. | Decomposers |
| Answer» E. | |
| 9. |
Which of the following chemicals is responsible for the depletion of ozone layer in the atmosphere? |
| A. | Carbon oxide |
| B. | Sulphur oxide |
| C. | Chlorofluorocarbons |
| D. | Nitrous oxide |
| Answer» D. Nitrous oxide | |
| 10. |
What isGreen House Effect? |
| A. | None of these |
| B. | Trapping of solar energy due to atmospheric carbon dioxide |
| C. | Pollution in houses |
| D. | Prevention of ultraviolet rays |
| Answer» C. Pollution in houses | |
| 11. |
What is the study of relation of animals and plants to their surroundings called ? |
| A. | Iconology |
| B. | Genealogy |
| C. | Ecology |
| D. | Ethnology |
| Answer» D. Ethnology | |
| 12. |
What are Organisms at the base of the food chain ? |
| A. | Herbivores |
| B. | Carnivores |
| C. | Photosynthetic plants |
| D. | Decomposers |
| Answer» D. Decomposers | |
| 13. |
If all the plants of the World die, all the animals will also die due to shortage of ______________ |
| A. | Shelter |
| B. | Food |
| C. | Cold air |
| D. | Oxygen |
| Answer» E. | |
| 14. |
Who does the Nitrogen fixation ? |
| A. | None of these |
| B. | Brown algae |
| C. | Red algae |
| D. | Blue green algae |
| Answer» E. | |
| 15. |
Which of the following gases is not found free in air? |
| A. | Carbon dioxide |
| B. | Oxygen |
| C. | Nitrogen |
| D. | Hydrogen |
| Answer» E. | |
| 16. |
What does the maximum fixation of solar energy ? |
| A. | Fungi |
| B. | Green plants |
| C. | Bacteria |
| D. | Protozoa |
| Answer» C. Bacteria | |
| 17. |
Which amongst the following pairs of organisms represents predator - prey relationship? |
| A. | None of these |
| B. | Deer and rabit |
| C. | Tiger and deer |
| D. | Man and camel |
| Answer» D. Man and camel | |
| 18. |
Which of the following terms is used for several individuals of a species living together in a locality? |
| A. | Population |
| B. | Ecosystem |
| C. | Biosphere |
| D. | Bio-community |
| Answer» E. | |
| 19. |
Uncontrolled industrialisation leads to acid rain. It is mainly contributed by ______________ |
| A. | Chlorofluorocarbons |
| B. | Methan gas |
| C. | Nitrous and sulphur oxide |
| D. | Carbon dioxide |
| Answer» D. Carbon dioxide | |
| 20. |
Which of the following is usually not an air pollutant? |
| A. | Carbon dioxide |
| B. | Sulphur oxide |
| C. | Hydrocarbons |
| D. | Nitrous oxide |
| Answer» E. | |
| 21. |
Ankara is near the longitude ? |
| A. | 153-8 E |
| B. | 39-55 E |
| C. | 44-25 E |
| D. | 32-53 E |
| Answer» E. | |
| 22. |
Amsterdam is near the longitude ? |
| A. | 17-40 E |
| B. | 14-58 E |
| C. | 4-53 E |
| D. | 138-36 E |
| Answer» D. 138-36 E | |
| 23. |
Guatemala city is near the longitude ? |
| A. | 113-15 E |
| B. | 2-35 W |
| C. | 90-3 W |
| D. | 74-15 W |
| Answer» D. 74-15 W | |
| 24. |
Approximate longitude extent of Algeria is ? |
| A. | 40-41 E |
| B. | 3-0 E |
| C. | 39-43 E |
| D. | 4-53 E |
| Answer» C. 39-43 E | |
| 25. |
Bangkok is near the longitude ? |
| A. | 31-21 E |
| B. | 74-15 W |
| C. | 58-22 W |
| D. | 100-30 E |
| Answer» E. | |
| 26. |
Brussels is near the longitude ? |
| A. | 4-22 W |
| B. | 130-51 E |
| C. | 58-22 W |
| D. | 6-15 W |
| Answer» B. 130-51 E | |
| 27. |
La Paz is near the longitude ? |
| A. | 15-17 E |
| B. | 68-22 W |
| C. | 76-40 W |
| D. | 106-48 E |
| Answer» C. 76-40 W | |
| 28. |
Cape Town is near the longitude ? |
| A. | 28-4 E |
| B. | 147-19 E |
| C. | 106-48 E |
| D. | 18-22 E |
| Answer» E. | |
| 29. |
Kinshasa is near the longitude ? |
| A. | 15-17 W |
| B. | 6-15 W |
| C. | 90-31 W |
| D. | 17-28 W |
| Answer» B. 6-15 W | |
| 30. |
Copenhagen is near the longitude ? |
| A. | 79-56 W |
| B. | 32-55 E |
| C. | 12-34 L |
| D. | 2-9 W |
| Answer» D. 2-9 W | |
| 31. |
Johannesburg is near the longitude ? |
| A. | 17-28 E |
| B. | 25-0 E |
| C. | 3-10 W |
| D. | 28-4 E |
| Answer» E. | |
| 32. |
Athens is near the longitude ? |
| A. | 19-5 E |
| B. | 1-55 W |
| C. | 23-43 E |
| D. | 44-48 E |
| Answer» D. 44-48 E | |
| 33. |
Budapest is near the longitude ? |
| A. | 8-41 E |
| B. | 67-2 W |
| C. | 64-10 W |
| D. | 19-5 E |
| Answer» E. | |
| 34. |
Frankfurt is near the longitude ? |
| A. | 7.6-49 E |
| B. | 10-2 E |
| C. | 8-41 E |
| D. | 28-4 E |
| Answer» D. 28-4 E | |
| 35. |
Jakarta is near the longitude ? |
| A. | 106-48 E |
| B. | 106-34 E |
| C. | 106-5 W |
| D. | 130-51 E |
| Answer» B. 106-34 E | |
| 36. |
Belgrade is near the longitude ? |
| A. | 3-10 E |
| B. | 20-32 E |
| C. | 12-34 E |
| D. | 26-7 E |
| Answer» C. 12-34 E | |
| 37. |
Cairo is near the longitude ? |
| A. | 106-5 W |
| B. | 2-35 W |
| C. | 31-21 E |
| D. | 72-48 E |
| Answer» D. 72-48 E | |
| 38. |
Hamburg is near the longitude ? |
| A. | 2-9 E |
| B. | 113-15 E |
| C. | 8-49 E |
| D. | 10-2 E |
| Answer» E. | |
| 39. |
Helsinki is near the longitude ? |
| A. | 26-7 E |
| B. | 90-31 W |
| C. | 58-18 W |
| D. | 25-0 E |
| Answer» E. | |
| 40. |
Dakar is near the longitude ? |
| A. | 82-23 W |
| B. | 6-15 E |
| C. | 90-31 W |
| D. | 17-28 W |
| Answer» E. | |
| 41. |
Buenos Aires is near the longitude? |
| A. | 90-31 W |
| B. | 88-24 E |
| C. | 58-22 W |
| D. | 100-23 E |
| Answer» D. 100-23 E | |
| 42. |
Djibouti is near the longitude? |
| A. | 113-15 E |
| B. | 8-49 E |
| C. | 57-40 E |
| D. | 43-3 E |
| Answer» E. | |
| 43. |
Beijing is near the longitude ? |
| A. | 116-25 E |
| B. | 138-36 E |
| C. | 57-40 W |
| D. | 2-9 W |
| Answer» B. 138-36 E | |
| 44. |
Berlin is near the longitude ? |
| A. | 25-OE |
| B. | 4-14 E |
| C. | 58-15 W |
| D. | 13-25 E |
| Answer» E. | |
| 45. |
Greenwich Mean Time (GMT) is the standard time of which of the following countries? |
| A. | Japan |
| B. | UK |
| C. | France |
| D. | India |
| Answer» C. France | |
| 46. |
The International Date-line passes through the ? |
| A. | Florida Strait |
| B. | Gibraltar Strait |
| C. | Malacca Strait |
| D. | Bering Strait |
| Answer» B. Gibraltar Strait | |
| 47. |
If the difference in time between two places were 2 hours and 20 minutes, then the difference in their longitude would be ___________ |
| A. | 35 |
| B. | 45 |
| C. | 50 |
| D. | 30 |
| Answer» B. 45 | |
| 48. |
Havana is near the longitude ? |
| A. | 82-3 W |
| B. | 26-7 E |
| C. | 67-2 W |
| D. | 0-31 W |
| Answer» E. | |
| 49. |
Which is the longest of the following lines? |
| A. | 45 |
| B. | 90 |
| C. | All are equal |
| D. | 0 |
| Answer» D. 0 | |
| 50. |
Latitude of a point on the earth is measured by the distance in ___________ |
| A. | Angles from the equator |
| B. | Kilometres from the equators |
| C. | None of these |
| D. | Kilometres from the poles |
| Answer» B. Kilometres from the equators | |