NEET Practice Questions (MCQs) with Answers & Solutions

reversible colloids

irreversible colloids

protective colloids

gum, proteins

Enzymes are in colloidal state

Enzymes are catalysts

Enzymes can catalyse any reaction

Urease is an enzyme

promoter                       

poison

auto-catalyst                 

none of these

may be defined as the milligram of the dry material of which the hydropholic sol is prepared and which when added to 10 mL of red gold sol, will prevent it from coagulation on the addition of 1mL of 10 percent sodium chloride solution.

may be defined as the milligram of the dry material of which the hydrophilic sol is prepared and which when added to 1 mL of red gold sol will prevent it from coagulation on the addition of 10 mL of 10 percent sodium chloride solution.

may be defined as the miligram of the dry material of which the hydrophilic sol is prepared and which when added to 1 mL of red gold sol will prevent it from coagulation on the addition of 1 mL of 1 percent sodium chloride solution

none of the above 

Its heat of adsorption is high

It takes place at high temperature

It is reversible

It forms unimolecular layer

deccompose

dissociate

associate

become completely soluble

K⁺

Ca⁺⁺

Al⁺⁺⁺

Sn⁴⁺

H⁺

OH^-

O^-2

S^-2

AlCl₃

BaCl₂

NaCl

KCl

 $\frac{\mathrm{x}}{\mathrm{m}}\mathrm{\alpha } \mathrm{p}°$

 $\frac{\mathrm{x}}{\mathrm{m}}\mathrm{\alpha } \mathrm{p}$

 $\frac{\mathrm{x}}{\mathrm{m}}\mathrm{\alpha } {\mathrm{p}}^{1/\mathrm{n}}$

All are correct for different ranges of pressure