The adsorption capacity of wood charcoal decreases when it is heated at about $900 ° C$ .

True

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False

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Solution

The correct option is B False
(1)Adsorption is the property due to which a substance absorbs gases, liquids, and solids only on its surface
(2)The adsorption capacity of wood charcoal is increased by heating it upto $900 ° C$ by steam because it opens up the pores and increases its capacity to hold more substances.
Therefore, the given statement is false.

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[IIT-JEE-Advanced 2013]

50

ml of

1

M oxalic acid is shaken with

0.5

gm of wood charcoal. The final concentration of the solution after adsorption is

0.5 M

. Amount of oxalic acid absorbed per gm of charcoal is:

50 ml of 1M oxalic acid is shaken with 0.5 g of wood charcoal. The final concentration of the solution after adsorption is 0.5 M. Calculate the amount of oxalic acid adsorbed per gram charcoal.

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The adsorption capacity of wood charcoal decreases when it is heated at about 900°C.

The adsorption capacity of wood charcoal decreases when it is heated at about $900 ° C$ .