MEDIUM
Earn 100

Draw the diagram which represents a key fits into a lock in the mechansim of enzyme catalysis?

Important Questions on Surface Chemistry

HARD
Give two examples for heterogeneous catalysis.
HARD
Match the following.
List - I Reaction List - II Catalyst
(A) N2(g)+3H2(g)2NH3(g) (I) Ni
(B) 2H2(g)+O2(g)2H2O(l) (II) Pt
(C) CO(g)+3H2(g)CH4(g)+H2O(g) (III) ZnO-Cr2O3
(D) CO(g)+2H2(g)CH3OH(g) (IV) Fe

The correct answer is:

EASY
___ acts as a negative catalyst in the decomposition of H2O2.
EASY
In manufacturing of sulphuric acid in presence of platinum catalyst, which metal impurity acts as catalytic poison?
EASY
Which of the following is an example of homogeneous catalysis?
EASY
Which statement is incorrect for a catalyst?
EASY
Which of the following statements about enzymes is not correct?
MEDIUM

Match List-I with List-II.

  List-I   List-II
A 4NH3g+5O2g4NOg+6H2Og I NOg
B N2g+3H2g2NH3g II H2SO4l
C C12H22O11aq+H2OlC6H12O6Glucose+C6H12O6Fructose III Pts
D 2SO2g+O2g2SO3g IV Fes

Choose the correct answer from the options given below

EASY
Which one of the following statements is incorrect about enzyme catalysis?
EASY
The role of a catalyst in a reversible reaction is
EASY
The catalyst for the oxidation of SO2 to SO3 in the manufacture of sulphuric acid by Contact process is
EASY
Match the catalysts (Column I) with products (Column II)
  Column I   Column II
  Catalyst   Product
A. V2O5 P. Polyethylene
B. TiCl4/AlMe3 Q. Ethanal
C. PdCl2 R. H2SO4
D. Iron Oxide S. NH3
EASY

Match List I with List II.

  List-I
Enzyme
  List-II
Conversion of
A. Invertase I. Starch into maltose
B. Zymase II. Maltose into glucose
C. Diastase III. Glucose into ethanol
D. Maltase IV. Cane sugar into glucose

Choose the most appropriate answer from the options given below

MEDIUM

Match List-I with List-II

  List-I (process)   List-II (catalyst)
(a) Deacon's process (i) ZSM-5
(b) Contact process (ii) CuCl2
(c) Cracking of hydrocarbons (iii)  Ni
(d) Hydrogenation of vegetable oils (iv) V2O5

Choose the most appropriate answer from the options given below-

HARD

Match List - I with List - II.

  List –I
(Processes/Reactions)
  List-II
(Catalyst)
A 2SO2g+O2g2SO3g I Fes
B 4NH3g+5O2g4NOg+6H2Og II Pts-Rhs
C N2g+3H2g2NH3g III V2O5
D Vegetable oil l+H2 Vegetable ghee(s) IV Nis

Choose the correct answer from the options given below

HARD
Which of the following is NOT CORRECT regarding enzyme catalysis?
EASY
Explain the characteristics of enzyme catalysis.
EASY
Which of the following is a character of catalyst?
MEDIUM
In the reaction, H2O2aqI-aqH2Ol+12O2g iodide ion acts as:
MEDIUM
Which one of the following is an example for homogenous catalysis?