Finely powered or colloidal catalyst particles having small surfa… - Vidyadip

MCQ

Finely powered or colloidal catalyst particles having small surface area are rich in free valencies.State whether the statement is True or False

A
The statement is True.
✓
The statement is False.
C
Neither.
D
Finely powered or colloidal catalyst particles having large surface area are rich in free valencies.

✓

Answer

Correct option: B.

The statement is False.

Finely powered or colloidal catalyst particles having small surface area cannot be rich in free valencies. When the catalyst is finely powdered the surface area of the particle is small but total surface area is very large.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "M.C.Q (1 Marks)" from Surface Chemistry→Surface Chemistry — all question types→Chemistry STD 12 Science question papers→Gujarat Board STD 12 Science question papers→Gujarat Board question paper generator→

Similar questions

Which of the following has diamagnetic character

The vapour pressure of a solvent decreased by $10\,mm$ of mercury, when a non-volatile solute was added to the solvent. The mole fraction of the solute in the solution is $0.2.$ What should be the mole fraction of the solvent, if decrease in the vapour pressure is to be $20\,mm$ of mercury

Rate of physical adsorption increases with:

Consider the following species

$CN^+, CN^-, NO$ and $CN$

Which one of these will have the highest bond order?

Complex compound $[Cr(NCS)(NH_3)_5][ZnCl_4]$ will be

The reaction, $X \to $product follows first order kinetics. In $40$ minutes the concentration of $X $ changes from $0.1\,M$ to $0.025\,M$ Then the rate of reaction when concentration of $X$ is $0.01\,M$

Given $D$-Glucose The compound($s$), which on reaction with $HNO _3$ will give the product having degree of rotation, $[\alpha]_{ D }=-52.7^{\circ}$ is (are)

Drinking water contains some salt impurities dissolved in it. When this solution is heated in an open container vapours are formed and separated slowly. In this process freezing point and osmotic pressure of remaining solution will continuously

The mixture of conc. $HCl$ and potassium chlorate on heating gives

At normal temperature iodoform is