Question

__________ is used as catalyst​

Answer 1

Explanation:

Enzymes

Enzymes are proteins that act as catalysts in biochemical reactions.

Answer 2

Answer:

$Gaseous \: and \: liquid  \: catalysts \:  are  \: commonly \: used \:  in \: their \: pure form \: or \: in \: combination \: with \: suitable \: carriers \: or \: solvents \: ; solid \:  catalysts  \: are \: commonly \: dispersed \: in \: other \: substances \: known \: as catalyst  \: supports.$

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