A catalyst is used [CPMT 1989]
For altering the velocity of the reaction
Only for decreasing the velocity of the reaction
All (a), (b) and (c) are correct
D
A catalyst is a substance which [NCERT 1981; CPMT 1996
A catalyst is used in a reaction to
[CPMT 1972, 75, 97; DPMT 1982]
[NCERT 1982; CPMT 1989; DCE 2005]