Answer / parimal patel

A particular phenomenon associated with the rates of
chemical reactions, it increases or decreases rate of
chemical reactions, substances not consumed in the reactions
themselves, the substances known as catalysts.

Answer / ranjjit debnath

A catalyst can be defined as a substance that increases the
rate of a chemical reaction. A catalyst can be synthetic,
organic or simply a metal. It does not hampper the
caracteristics of the reaction.

Answer / aman bhandari

catalyst is just a chemical that is used to help us to attain equilibrium faster for example as in rossenmund reaction for prepration of aryl aldehydes we use paladium is used as a catalyst

Answer / vipul baibhav

A substance which either accelerates or retards the rate of chemical reaction without taking active part in it is called catalyst....

Answer / banhisikha

(a)always slows down the reaction
(b)always starts a rection that would not have ocurred at
all otherwise
(c)causes changes in the rate of the reaction
(d)changes the quantities of the products formed

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