class 12th chemistry lesson 4 ka vvi subject question paper Bihar board 2026 science

array(1) { [0]=> object(stdClass)#5051 (5) { ["video_id"]=> int(9999999) ["related_video_id"]=> string(11) "Xdmra7IWvsw" ["related_video_title"]=> string(96) "class 12th Vvi subject question paper physics Bihar board 2026 me 100% aayegaa lesson 16🥳🥳" ["posted_time"]=> string(24) "11 часов назад" ["channelName"]=> string(8) "GK POWER" } }