C.N.G. is.........fuel
(a) clean
(b) dangerous
(c) bad
(D) None of these
Answers
Answer:
The relationship between internal energy, heat, and work can be represented by the equation:
Δ
U
=
q
+
w
as shown in Figure 1. This is one version of the first law of thermodynamics, and it shows that the internal energy of a system changes through heat flow into or out of the system (positive q is heat flow in; negative q is heat flow out) or work done on or by the system. The work, w, is positive if it is done on the system and negative if it is done by the system.
A rectangular diagram is shown. A green oval lies in the center of a tan field inside of a gray box. The tan field is labeled “Surroundings” and the equation “Δ U = q + w” is written at the bottom of the diagram. Two arrows face into the green oval and are labeled “q subscript in” and “w subscript on” while two more arrows face away from the oval and are labeled “q subscript out” and “w subscript by.” The center of the oval contains the terms “Δ U > 0”, “System,” and “Δ U < 0.”
Explanation:
Answer:
option : (A) is right
because it not so harmful for nature other than fuel