ସଦସ୍ୟତା ନିଅନ୍ତୁ
ପୃଷ୍ଠା ଠିକଣା କ୍ଲିପବୋର୍ଡରେ କପି ହୋଇଛି ।
ଅର୍ଥ : (chemistry) a substance that retards a chemical reaction or diminishes the activity of a catalyst.
(chemistry) a substance that initiates or accelerates a chemical reaction without itself being affected.
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