Na₂S

  Na₃PO₄

  Na₂SO₄

  NaCl

TiO₂

Hemoglobin

Starch

Hydrated Al₂O₃

 $N{a}^{+} > B{a}^{+2} > A{l}^{+3}$

  $A{l}^{+3} > B{a}^{+2} > N{a}^{+}$

  $B{a}^{+2} > A{l}^{+3} > N{a}^{+}$

 $A{l}^{+3} > N{a}^{+}> B{a}^{+2}$

Dialysis

Condensation

Filteration by animal membrane

By adding electrolyte

Polar at the outer surface but non-polar at an inner surface

Polar at inner surface non-polar at an outer surface

Distributed over all the surface

Are present on the surface only

The concentration of reactant molecules at the active centers of the catalyst becomes high due to adsorption

In the process of adsorption, the activation energy of the molecules becomes large

Adsorption produces heat which increases the speed of the reaction

Adsorption lowers the activation energy of the reaction.

 Adsorption is a surface phenomenon of accumulation of molecules of a substance at the surface rather than in the bulk of a solid or liquid.

Adsorption involves penetration through the surface to the bulk of the solid or liquid.

The substance that gets adsorbed is called the ‘adsorbate’ and the substance on whose surface the adsorption takes place is called the ‘adsorbent’.

During absorption, the substance gets uniformly distributed throughout the bulk of the solid or liquid.

Small surface area.

Large surface area.

Weak molecular bonding.

Strong molecular bonding.

Nature of the gas.

Surface area of the solid.

Effect of pressure.

All of the above.

The extent of adsorption $\left(\frac{\mathrm{x}}{\mathrm{m}}\right)$ against the pressure of gas (P) at constant V.

The extent of adsorption $\left(\frac{\mathrm{x}}{\mathrm{m}}\right)$ against the pressure of gas (P) at constant T.

The extent of absorption $\left(\frac{\mathrm{x}}{\mathrm{m}}\right)$ against the volume of gas (V) at constant P.

The extent of absorption $\left(\frac{\mathrm{x}}{\mathrm{m}}\right)$ against the pressure of gas (P) at constant T.

Increasing the surface area of the adsorbent.

Breaking adsorbent into smaller pieces or powdering it.

Both (1) and (2)

None of the above.

 Adsorption leads to a decrease in the residual forces on the surface of the adsorbent.

 ∆S is negative.

Both (1) and (2) 

None of the above.

Adsorption is a reversible process and is accompanied by a decrease in pressure.

Adsorption decreases with an increase in pressure.

Adsorption is an exothermic process.

The magnitude of physisorption adsorption decreases with an increase in temperature.

The particles present in them come closer and form aggregates, leading to precipitation.

The particles present in them move farther and form aggregates, leading to precipitation.

The particles present in them come closer and do not form aggregates, leading to precipitation.

The particles present in them move farther and do not form aggregates, leading to precipitation.

Biochemical catalysts.

Protein molecules of high molecular masses.

Both (1) and (2)

None of the above.

Zeeman effect

Tyndall effect.

Electrophoresis.

None of the above.

The dispersed phase and dispersion medium are liquids.

The dispersed phase and dispersion medium are solids.

The dispersed phase and dispersion medium are gases.

The dispersed phase are solids and dispersion medium are liquids.

Negative charge

Positive charge

Both

None of the above.

 $2{\mathrm{SO}}_{2\left(\mathrm{g}\right)} + {\mathrm{O}}_{2\left(\mathrm{g}\right)} \stackrel{{\mathrm{Pt}}_{\left(\mathrm{s}\right)}}{\to } 2{\mathrm{SO}}_{3\left(\mathrm{g}\right)}$

 $4{\mathrm{NH}}_{3\left(\mathrm{g}\right)}+3{\mathrm{H}}_{2\left(\mathrm{g}\right)}\stackrel{{\mathrm{Fe}}_{\left(\mathrm{s}\right)}}{\to }2{\mathrm{NH}}_{3\left(\mathrm{g}\right)}$

 $\mathrm{Vegetable} {\mathrm{oil}}_{\left(\mathrm{l}\right)}+{\mathrm{H}}_{2\left(\mathrm{g}\right)}\stackrel{{\mathrm{Ni}}_{\left(\mathrm{s}\right)}}{\to }\mathrm{Vegetable} {\mathrm{ghee}}_{\left(\mathrm{s}\right)}$

All of the above

 The activity of a catalyst is its ability to increase the rate of a particular reaction.

 Chemisorption is the main factor in deciding the activity of a catalyst.

The catalysts are selective in nature

All of the above.

 Zeolites are alumino-silicates that are micro-porous in nature.

 The reactions taking place in zeolites are very sensitive to the pores and cavity size of the zeolites.

 Zeolites are commonly used in the petrochemical industry.

All of the above.

Catalytic reaction depends upon the pore structure of the catalyst .

Catalytic reaction depends on the size of the reactant and the product molecules.

Both '1'and '2'

None of the above.

For cleansing action of soaps.

For digestion of fats in the intestines.

As antiseptics and disinfectants.

All of the above.

Formed by substances such as soaps and detergents when dissolved in water.

Substances whose molecules contain a hydrophobic and a hydrophilic part.

Molecules whose hydrophobic parts are present towards the center, while the hydrophilic parts are pointing towards the outside.

All of the above.

  Physisorption is reversible in nature.

Chemisorption is multi-layer adsorption.

In chemisorption, strong chemical bonds are formed between the adsorbate and the surface of the adsorbent.

Physisorption is favoured by low temperature conditions.

The catalyst and reactants are present in different phases.

The catalyst and reactants are present in the same phase.

The products and reactants are present in different phases.

None of the above.

Benzosol

Aerosol

Hydrosol

All of the above