Refer to the given diagram and select correct examples of X, Y and Z resources of energy.
X Y Z
A Petroleum Coal Hydro energy
B Solar energy Natural gas Coal
C Tidal energy Petroleum Nuclear energy
D Coal Nuclear energy Petroleum
not understanding please clarify
Study the given family tree. X and Y are Adi's maternal grandparents. He has ________ sibling(s).
The following objects were separated into two groups.
Which of the following can be used for the classification of the above objects?
AMetals and non-metals
BConductors and insulators
CMagnetic and non magnetic
DAll of these
Why is the correct answer given as "B"? Air is not a conductor.