_____ country has manufactured IAF`s AN-32 aircraft that formally certified to operate on indigenous bio-jet fuel recently ?

1) Japan
2) China
3) Russia
4) United States

Explanation:
The Russian made AN-32 transport aircraft of Indian Air Force’s (IAF) has got the formal fleet certification to fly on blended aviation fuel containing up to 10% of indigenous bio-jet fuel. The approval certification was given by P Jayapal, Chief Executive, Centre for Military Airworthiness and Certification (CEMILAC) to Air Commodore Sanjiv Ghuratia, Air Officer Commanding at at the aero-engine test facilities at Chandigarh.The certification has been provided after its thorough evaluation against international standards. Also, the use of bio-fuel is major push to Make in India’ mission. Background: From 2018, IAF was undergoing evaluation tests and trials with green aviation fuel or bio-jet fuel, which was first produced by the CSIR-IIP lab at Dehradun in 2013.