Medium
Which is an incorrect statement?
- ATyndall effect takes place in true solution.
- BColloidal Gold can be prepared by Bredig's arc method.
- CPhysical adsorption is multilayer adsorption at high pressure.
- DWhen excess of $AgNO_3$ is treated with $KI$ solution,then $AgI$ forms a positive charge sol.
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Point out the false statement.
Easy
View Solution$A$ is a protecting colloid. The following data is obtained for preventing the coagulation of $10 \text{ mL}$ of gold sol to which $1 \text{ mL}$ of $10\% \text{ NaCl}$ is added. What is the gold number of $A$?
$1$. Expt. No. $2$. Wt (in mg) of $A$ added to gold sol $3$. Coagulation $1$ $40$ Prevented $2$ $35$ Prevented $3$ $25$ Not prevented $4$ $32$ Not prevented $5$ $33$ Prevented
| $1$. Expt. No. | $2$. Wt (in mg) of $A$ added to gold sol | $3$. Coagulation |
| $1$ | $40$ | Prevented |
| $2$ | $35$ | Prevented |
| $3$ | $25$ | Not prevented |
| $4$ | $32$ | Not prevented |
| $5$ | $33$ | Prevented |
Which is the correct statement in the case of milk?
Medium
View SolutionHydrophilic sols are .......
Easy
View SolutionSmoke is an example of
DifficultJEE MAIN 2013
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