Heterogeneous catalysts

Reaction between gaseous reactants are catalysed by ?

• Solid

• Liquid

• Gas

A gaseous reaction takes place in ?

• Surface reaction

• Surface tension

Surface reaction involves how many steps ?

• 1

• 3

• 5

These steps are?

• Consecutive

• Kinetic reaction

Which steps are very fast

• 1 and 5

• 2 and 4

• 1 and 2

_________ plays an important role in heterogeneous catalysis .

• Chemisorption

• Physisorption

What is the second step in these following?

• Diffusion of reactants to surface

• Adsorbtion of reactants Surface

• Chemical reaction at the surface

Oxidation of ammonia to nitric oxide in the presence of platinum ?

• Habers process

• Oswalds process

Formation of ammonia by di nitrogen an di hydrogen in the presence of finely divided iron?

• Habers process

• Oswalts process

Rate determinant step involves in Which step ?

• Step 1

• Step 2

• Step 3