railway DFCCIL Junior Executive 2023 (CBT 1 & CBT 2) Mock Test General Knowledge Economy

ନିମ୍ନଲିଖିତ ଉତ୍ପାଦନ ମଧ୍ୟରୁ କେଉଁଟି 'ରୌପ୍ୟ ବିପ୍ଳବ' ସହିତ ଜଡିତ?

1
ଝୋଟ ଉତ୍ପାଦନ 
2
ଅଣ୍ଡା ଉତ୍ପାଦନ 
3
ପେଟ୍ରୋଲିୟମ ଉତ୍ପାଦନ
4
କପା ଉତ୍ପାଦନ
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