The process by which the wind is used to generate the energy called………
a) electric energy
b) wind energy
c) chemical energy
d) all of these
Which of the following energy is mixture of different gases?
a) biogas energy
b) wind energy
c) chemical energy
d) electrical energy
Measure for Conservation and Utilization of Resources
(وسائل کے استعمال اور تحفظ کے لئے اقدامات):
Which of the following measures should be take to conserve natural resources?
a) global citizenship
b) save water and electricity
c) planting trees
d) all of these
Exercise:
Most of metallic minerals are……….
a) ferrous
b) renewable
c) non-ferrous
d) precious
