1. Based on this graph, how does metal A differ from metal B? A Metal A is have higher density than metal B.
B. Metal B has higher density than metal A.
C. Both metals A and B have the same density.
D. None of the abaove.

Answer:             1.0  × 10⁻⁵ msolution:                     as we know ph is given as,                                    ph  = -log [h⁺]and,                                    [h⁺]  =  10^-ph    (1)putting value of ph in eq. 1,                                    [h⁺]  =  10⁻⁵                                    [h⁺]  =  1.0  × 10⁻⁵ m

The answer is:   [d]:   "ultraviolet" {"  uv  "} .