51. The resources may be ________.
a. renewable resources
b. non renewable resources
c. both a and b
Correct option = both a and b
52. The non renewable resources are ________.
a. unfailing
b. exhaustible
c. inexhaustible
Correct option = exhaustible
53. The non renewable resources once consumed cannot be _______.
a. removed
b. replaced
c. none of these
Correct option = replaced
54. Non renewable resources include _________.
a. various metals and non metallic minerals
b. fossil fuels (coal, oil and natural gas)
c. above all
Correct option = above all
55. The resources which are never depleted and recycled in the nature again and again are called _________.
a. renewable resources
b. non renewable resources
c. all of above
Correct option = renewable resources
56. Air, water, food, land, forests and wild life are ________.
a. non renewable resources
b. renewable resources
c. none of these
Correct option = renewable resources
57. ________ is several kilometers thick blanket of atmosphere surrounding the earth.
a. soil
b. air
c. water
Correct option = air
58. Air is very important _________ resource.
a. artificial resource
b. uncommon
c. natural resource
Correct option = natural resource
59. Air consists of _______.
a. energy
b. gases
c. light
Correct option = gases
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