1.

Gold numbers of protective coloids A,B, C and D are 0.50,0.01, 0.10 and 0.005 reprectively. The correct order of their protective powers is

Answer»

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

Solution :SMALLER the GOLD number, GREATER is the protective POWER. Thus, protective powers of A, B, C and D are in the order
D `(0.005) gt B (0.001) gt C (0.05) gt A (0.50)`
or `A lt C lt B lt D.`


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