1
KCET 2021
MCQ (Single Correct Answer)
+1
-0

A colloidal solution is subjected to an electric field than colloidal particles more towards anode. The amount of electrolytes of $$\mathrm{BaCl}_2, \mathrm{AlCl}_3$$ and $$\mathrm{NaCl}$$ required to coagulate the given colloid is in the order

A
$$\mathrm{NaCl}>\mathrm{BaCl}_2>\mathrm{AlCl}_3$$
B
$$\mathrm{BaCl}_2<\mathrm{AlCl}_3>\mathrm{NaCl}$$
C
$$\mathrm{AlCl}_3=\mathrm{NaCl}=\mathrm{BaCl}_2$$
D
$$\mathrm{AlCl}_3>\mathrm{BaCl}_2>\mathrm{NaCl}$$
2
KCET 2021
MCQ (Single Correct Answer)
+1
-0

Zeta potential is

A
potential required to bring about coagulation of a colloidal sol.
B
potential required to give the particle a speed of $$1 \mathrm{~cm} \mathrm{~s}^{-1}$$
C
potential difference between fixed charged layer and the diffused layer having opposite charges
D
potential energy of the colloidal particles.
3
KCET 2020
MCQ (Single Correct Answer)
+1
-0

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?

A
Sol obtained is a negative sol with $$\mathrm{NO}_3^{-}$$ adsorbed on AgI.
B
Sol obtained is a positive sol with $$\mathrm{Ag}^{+}$$ adsorbed on AgI.
C
Sol obtained is a positive sol with $$\mathrm{K}^{+}$$ adsorbed on AgI.
D
$Sol obtained is a negative sol with I$$^-$$ adsorbed on AgI.
4
KCET 2020
MCQ (Single Correct Answer)
+1
-0

During adsorption of a gas on a solid at low temperature

A
$$\Delta G<0, \Delta H<0, \Delta S<0$$
B
$$\Delta G>0, \Delta H>0, \Delta S>0$$
C
$$\Delta G<0, \Delta H<0, \Delta S>0$$
D
$$\Delta G<0, \Delta H>0, \Delta S<0$$
KCET Subjects
EXAM MAP