Coagulating value of the electrolytes $$\mathrm{AlCl}_{3}$$ and $$\mathrm{NaCl}$$ for $$\mathrm{As}_{2} \mathrm{S}_{3}$$ are 0.09 and 50.04 respectively. The coagulating power of $$\mathrm{AlCl}_{3}$$ is $$x$$ times the coagulating power of $$\mathrm{NaCl}$$. The value of $$\underline{x}$$ is ___________.

The number of colloidal systems from the following, which will have 'liquid' as the dispersion medium, is ___________.

Gem stones, paints, smoke, cheese, milk, hair cream, insecticide sprays, froth, soap lather

For the adsorption of hydrogen on platinum, the activation energy is $$30 ~\mathrm{k} ~\mathrm{J} \mathrm{mol}^{-1}$$ and for the adsorption of hydrogen on nickel, the activation energy is $$41.4 ~\mathrm{k} ~\mathrm{J} \mathrm{mol}^{-1}$$. The logarithm of the ratio of the rates of chemisorption on equal areas of the metals at $$300 \mathrm{~K}$$ is __________ (Nearest integer)

Given: $$\ln 10=2.3$$

$$\mathrm{R}=8.3 \mathrm{~J} \mathrm{~K}^{-1} \mathrm{~mol}^{-1}$$