KCET 2020 | Surface Chemistry Question 7 | Chemistry

A sol of $$\mathrm{AgI}$$ is prepared by mixing equal volumes of $$0.1 \mathrm{~M} \mathrm{~AgNO}_3$$ and $$0.2 \mathrm{~M} \mathrm{~KI}$$, which of the following statement is correct?

Sol obtained is a negative sol with $$\mathrm{NO}_3^{-}$$ adsorbed on AgI.

Sol obtained is a positive sol with $$\mathrm{Ag}^{+}$$ adsorbed on AgI.

Sol obtained is a positive sol with $$\mathrm{K}^{+}$$ adsorbed on AgI.

$Sol obtained is a negative sol with I$$^-$$ adsorbed on AgI.

KCET 2020

MCQ (Single Correct Answer)

-0

During adsorption of a gas on a solid at low temperature

$$\Delta G<0, \Delta H<0, \Delta S<0$$

$$\Delta G>0, \Delta H>0, \Delta S>0$$

$$\Delta G<0, \Delta H<0, \Delta S>0$$

$$\Delta G<0, \Delta H>0, \Delta S<0$$

KCET 2019

MCQ (Single Correct Answer)

-0

Which of the following is an example of homogeneous catalysis?

oxidation of $$\mathrm{NH}_3$$ in Ostwald's process

oxidation of $$\mathrm{SO}_2$$ in contact process

oxidation of $$\mathrm{SO}_2$$ in lead chamber process

manufacture of $$\mathrm{NH}_3$$ by Haber's process

KCET 2019

MCQ (Single Correct Answer)

-0

Critical Micelle concentration for a soap solution is $$1.5 \times 10^{-4} \mathrm{~mol} \mathrm{~L}^{-1}$$. Micelle formation is possible only when the concentration of soap solution in $$\mathrm{mol} \mathrm{~L}^{-1}$$ is

$$2.0 \times 10^{-3}$$

$$4.6 \times 10^{-5}$$

$$7.5 \times 10^{-5}$$

$$1.1 \times 10^{-4}$$

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