SSC SSC JE Mechanical 2025 Mock Test Series (Paper 1 & Paper 2) Fitter Corrosion

ଲୌହ ଏବଂ ___ର ମିଶ୍ରଣ ହେତୁ ସଂକ୍ଷାରଣ ହୁଏ ।

1
ସଲଫର 
2
ଉଦଜାନ 
3
ନାଇଟ୍ରୋଜେନ
4
ଅମ୍ଳଜାନ 
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