Q. The gold number of gelatin, haemoglobin and sodium acetate are 0.005, 0.05 and 0.7 respectively. The protective actions will be in order
A) Gelatin < haemoglobin < sodium acetate
B) Gelatin > haemoglobin > sodium acetate
C) Haemoglobin > gelatin > sodium acetate
D) Sodium acetate > gelatin > haemoglobin
Explanation
(b)
$\because Protective\ power\ \propto \frac{1}{gold\ number}$
$\therefore Order\ of\ protective\ power\ will\ be$
$Gelatin > Haemoglobin > Sodium\ acetate$
$(0.005)\ \ \ \ \ \ \ \ \ \ \ (0.05)\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ (0.7)\$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.