1. ________ are the resources that can be replenished by physical and biological means.
- Renewable
- Non renewable
- Both
- None
2. ________ are those resources which once used on exhausted cannot be reused.
- Renewable
- Non-renewable
- Both
- None
3. Air, water, soil etc are the examples of ________ resources.
- Renewable
- Non-renewable
- Both
- None
4. Fossil fuels like coal, oil, natural gas and metals are the examples of ________ resources.
- Renewable
- Non-renewable
- Both
- None
5. Air consists of ________% nitrogen
6. Air consists of ________% oxygen
7. Air consists of ________% carbon dioxide
8. Total water resource of the world has been estimated about ________ millions cubic km.
9. Out of total water on earth ________% is ocean water.
10. ________% water is present in the earth’s crust.
11. ________% water is present in the glaciers and polar celcaps.
12. ________% water is present in fresh water lakes river and atmosphere.
13. Rain percolates onto the ground and is called ________
- Substratum water
- Level water
- Ground water
- All of the above
14. Water that accumulates as the thin film around soil particles is called ________.
- Soil water
- Hydroscopic water
- Both a and b
- None
15. The grazing lands or pastures occupy nearly ________% of the land in the world.
16. Solar energy, wind, water, wave, ocean current, tides, temperature gradients and plant materials are sources of energy.
- Renewable
- Non-renewable
- Both
- None
17. Coal, petroleum and gas fulfill our daily requirement about ________%
18. ________ is derived from the oxidized carbon of plant tissues.
- Oil
- Petroleum
- Coal
- Natural gas
19. ________ involves splitting of certain heavy elements into
lighter ones, resulting into the conversion of small mass of the
elements into energy.
- Nuclear fission
- Nuclear fusion
- Condensation
- None
20. Nuclear fission takes nearly 7 hours to fission 1kg of fuel releasing ________ KJ energy.
21. Heat produced by radioactive by radioactive material deep beneath the surface of the earth is called ________.
- Geothermal energy
- Solar energy
- Nuclear energy
- Electrical energy
22. The Earth receives a maximum of ________ watts/sq.metre when the sun is at the top.
23. Certain kinds of solid waste material such as farm and animal
manure, crop residues and sewage however can be converted into fuel
called ________.
- Biogas
- Coal
- Natural gas
- Petroleum
24. The wind waves and ocean thermal gradients are ________ sources of solar energy.
- Direct
- Indirect
- Both
- None
25. Total energy flow due to tides in shallow seas is about ________ billion KW.
26. The essential condition for generating hydro electric power is ________.
- Small volume of water falling great distance
- Large volume of water falling small distance
- Both
- None
27. At present WAPDA is generating ________ megawatt of power in peak periods of Pakistan.
28. It has been estimated that about ________ electricity produced is
being wasted through the use of inefficient of modern machine.
29. In Pakistan the population is increasing at the rate of ________% per annum.
30. The world population at present is about ________ billion.
31. When the amount of solid waste or concentration of gases other than oxygen in air is increased is called ________ pollution.
32. ________ includes large number of things such as simple carbon smoke, road dust etc.
- Particulate pollutants
- Smog
- Simple pollutant
- All of the above
33. NO2 combine with gaseous hydro carbons to form variety of secondary pollutants called ________.
- Photochemical smog
- Photochemical oxidants
- Both
- None
34. CO2 allows the sun rays to pass through but prevents the long
wave radiations reflected by earth. This phenomenon is called ________.
- Depletion of ozone layer
- Green house
- Global warming
- None
35. The release of chlorine atoms into the atmosphere breaks down the ozone shield. This phenomenon is called ________.
- Depletion of ozone layer
- Green house
- Global warming
- None
36. The process of contamination of water is called ________
- Depletion of ozone layer
- Green house
- Water pollution
- None
37. Radiation, noise pollution are the example of ________ pollution.
- Air
- Material
- Non-material
- Land
38. Noise levels are measure in ________.
- Meter
- Dyne
- Decibels
- Kilo watt hour
39. Influenza, aids, chicken pox etc are the example of ________ diseases.
- Bacterial
- Fungal
- Protozoal
- Nutritional
- Viral
40. Ring worm, athelete’s foot are the example of ________ diseases.
- Bacterial
- Fungal
- Protozoal
- Nutritional
- Viral
41. Malaria, African sleeping sickness are the example of ________ diseases.
- Bacterial
- Fungal
- Protozoal
- Nutritional
- Viral
42. Tuberclosis, typhoid, pneumonia and cholera are the example of ________ diseases.
- Bacterial
- Fungal
- Protozoal
- Nutritional
- Viral
43. Scurvy is caused by deficiency of vitamin ________
44. Cholera is caused by ________.
- Tinea corporis
- Vibrio cholera
- Linea versicolor
- None
45. Deficiency of vitamin K causes ________.
- Anemia
- Prolong bleeding
- Tooth decay
- Goiter
46. Deficiency of Vitamin E causes ________.
- Anemia
- Prolong bleeding
- Tooth decay
- Goiter
47. Deficiency of Iodine causes ________
- Anemia
- Prolong bleeding
- Tooth decay
- Goiter
48. Deficiency of Floride causes ________
- Anemia
- Prolong bleeding
- Tooth decay
- Goiter
49. Degeneration of neurons of brain is called ________ disease.
- Parkinson’s
- Alzheimer’s
- Epilepsy
- All of the above
50. Anemia, prolong bleeding, tooth decay and goites are the example of ________ diseases.
- Bacterial
- Fungal
- Protozoal
- Nutritional
- Viral
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