GK – Oneliner 89The ratio of pure gold in 18 Carat gold: 75%In fireworks, the green flame is produced because of: BariumPotassium nitrate is used in FertilizersPurest form of Iron Wrought IronFirst metal discovered by man CopperClick for complete file of 300 MCQs Tags: BPSC, CSS, FPSC, GK, KPPSC, onepaper, PMS, PPSC, tehsildarRead more articles Previous PostGK – Oneliner 88 Next PostGK – Oneliner 90 You Might Also Like GK – Oneliner 37 December 29, 2023 GK – Oneliner 220 January 7, 2024 GK – Oneliner 146 January 6, 2024Leave a Reply Cancel replyCommentEnter your name or username to commentEnter your email address to commentEnter your website URL (optional) Save my name, email, and website in this browser for the next time I comment.