railway DFCCIL MTS 2025 Mock Test Series General Science Biology Biology in Everyday life

ଚା' ଏବଂ କଫିର ମୁଖ୍ୟ ସକ୍ରିୟ ଉପାଦାନ ହେଉଛି _______

1
ଆସ୍ପିରିନ 
2
ନିକୋଟିନ 
3
କ୍ଳୋରୋଫିଲ 
4
କ୍ୟାଫିନ୍
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