Gold numbers of protective colloids `A,B,C` and `D` are `0.5,0.01,0.10` and `0.005` respectivaly. The correct order of their protective power is

Options

A. `B lt D lt A lt C`
B. `D lt A lt C lt B`
C. `C lt B lt D lt A`
D. `A lt C lt B lt D`

Answer

D

Explanation

Lesser two value of Gold number gratater will b the protecting power of protectived coloid. In the light of this, the correct order is : `AltCltBltD.`