Match the following:

The correct match is

• A - iv; B - i; C - ii; D - iii

• A - iii; B - i; C - v; D - ii

• A - iii; B - i; C - ii; D - iv

• A - iv; B - i; C - v; D - iii

Gelly is a colloidal solution of

• solid in liquid

• liquid in solid

• liquid in liquid

• solid in solid

313.

Which of the following is the most effective in causing coagulation of ferric hydroxide solution?

• KCl

• KNO₃

• K₂SO₄

• K₃[Fe(CN)₆]

Which of the following statements is not correct inrespect of chemisorption?

• Highly specific adsorption

• Irreversible adsorption

• Multilayered adsorption

• High enthalpy of adsorption

Colloidal solution of gold is in different colours like red, purple, blue and golden because of

• variable oxidation states of gold

• size difference in the particles of gold

• presence of impurities

• difference in the concentration of gold particles

The size of colloidal particles is in between

• 10^-7 - 10^-9 cm

• 10^-9 - 10^-11 cm

• 10^-5 - 10^-7 cm

• 10^-2 - 10^-3 cm

The stability of lyophilic colloids is due to which of the following?

• Charge on their particles

• Large size of their particles

• Smaller size of their particles

• A layer of medium of dispersion on their particles

Milk is

• fat dispersed in water

• water dispersed in fat

• water dispersed in oil

• fat dispersed in fat

In chemical adsorption, how many layers are adsorbed?

• One

• Two

• Multi

• Zero

What is the role of a catalyst in a catalysed reaction?

• Lowers the activation energy

• Increases the activation energy

• Affects the free energy change

• Affects the enthalpy change