211.

The correct statement regarding the following energy diagrams is

• Reaction M is faster and less exothermic than reaction N

• Reaction M is slower and less exothermic than reaction N

• Reaction M is faster and more exothermic than reaction N

• Reaction M is slower and more exothermic than reaction N

The amount of electrolytes required to coagulate a given amount of AgI colloidal solution (-ve charge) will be in the order

• NaNO₃ > Al₂(NO₃)₃ > Ba(NO₃)₂

• Al₂(NO₃)₃ > Ba(NO₃)₂ > NaNO₃

• Al₂(NO₃)₂ > NaNO₃ > Ba(NO₃)₂

• NaNO₃ > Ba(NO₃)₂ > Al₂(NO₃)₃

The decomposition of hydrogen peroxide  can be slowed by the addition of acetamide. The latter acts as a

• detainer

• stopper

• promoter

• inhibitor

Which of the following is correct according to adsorption isotherm ?

• $\frac{\mathrm{X}}{\mathrm{m}}\propto \mathrm{p}°$

• $\frac{\mathrm{X}}{\mathrm{m} }\propto \mathrm{P}\text{'}$

• $\frac{\mathrm{X}}{\mathrm{m} } \propto {\mathrm{p}}^{\raisebox{1ex}{$1$}\!\left/ \!\raisebox{-1ex}{$\mathrm{n}$}\right.}$

• All of these

The formation of colloid from suspension is

• peptisation

• condensation

• fragmentation

• sedimentation

Which of the following has maximum value of flocculating power ?

• Pb²⁺

• Pb⁴⁺

• Sr²⁺

• Na⁺

Which mixture of the solutions will lead to the formation of negatively charged colloidal [Agl]l– sol ?

• 50 mL of 1 M AgNO₃ + 50 mL of 2 M KI

• 50 mL of 2 M AgNO₃ + 50 mL of 1.5 M KI

• 50 mL of 0.1M M AgNO₃ + 50 mL of 0.1 M KI

• 50 mL of 1 M AgNO₃ + 50 mL of 1.5 M KI