਀            㰀搀椀瘀 挀氀愀猀猀㴀∀猀攀氀攀挀琀攀搀ⴀ挀栀愀瀀琀攀爀猀ⴀ搀椀猀瀀氀愀礀∀㸀

Selected Subject: Physics

਀                㰀栀㐀㸀匀攀氀攀挀琀攀搀 䌀栀愀瀀琀攀爀㨀㰀⼀栀㐀㸀 ਀            㰀⼀搀椀瘀㸀 ਀            㰀搀椀瘀 挀氀愀猀猀㴀∀攀砀愀洀ⴀ琀礀瀀攀ⴀ猀攀氀攀挀琀椀漀渀∀㸀

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਀                㰀搀椀瘀 挀氀愀猀猀㴀∀洀愀爀欀猀ⴀ氀椀猀琀∀㸀 TEST TYPE I - 10 Questions, 10 Minutes, 10 Marks਀                    㰀氀愀戀攀氀㸀㰀椀渀瀀甀琀 琀礀瀀攀㴀∀爀愀搀椀漀∀ 渀愀洀攀㴀∀攀砀愀洀ⴀ琀礀瀀攀∀ 瘀愀氀甀攀㴀∀㈀　∀㸀 吀䔀匀吀 吀夀倀䔀 䤀䤀 ⴀ ㄀㔀 儀甀攀猀琀椀漀渀猀Ⰰ ㄀㔀 䴀椀渀甀琀攀猀Ⰰ ㄀㔀 䴀愀爀欀猀㰀⼀氀愀戀攀氀㸀 TEST TYPE III - 20 Questions, 20 Minutes, 20 Marks਀                㰀⼀搀椀瘀㸀 ਀                㰀挀攀渀琀攀爀㸀 Start Exam਀                㰀⼀挀攀渀琀攀爀㸀

਀            㰀挀攀渀琀攀爀㸀 ਀            㰀⼀挀攀渀琀攀爀㸀 ਀            㰀搀椀瘀 椀搀㴀∀焀甀椀稀∀㸀㰀⼀搀椀瘀㸀 ਀            㰀℀ⴀⴀ 儀甀攀猀琀椀漀渀 一愀瘀椀最愀琀椀漀渀 ⴀⴀ㸀 ਀ ਀ ਀        㰀搀椀瘀 椀搀㴀∀爀攀猀甀氀琀猀∀ 挀氀愀猀猀㴀∀栀椀搀搀攀渀∀㸀㰀⼀搀椀瘀㸀 ਀    㰀⼀搀椀瘀㸀 ਀    㰀猀挀爀椀瀀琀㸀 // Updated JEE Physics chapters਀        挀漀渀猀琀 猀甀戀樀攀挀琀猀 㴀 笀 Physics: [ ਀                ∀䌀栀愀瀀琀攀爀 ㄀㨀 唀渀椀琀猀 愀渀搀 䴀攀愀猀甀爀攀洀攀渀琀猀∀Ⰰ "Chapter 2: Motion in a Straight Line",਀                ∀䌀栀愀瀀琀攀爀 ㌀㨀 䴀漀琀椀漀渀 椀渀 愀 倀氀愀渀攀∀Ⰰ "Chapter 4: Laws of Motion",਀                ∀䌀栀愀瀀琀攀爀 㔀㨀 圀漀爀欀Ⰰ 䔀渀攀爀最礀 愀渀搀 倀漀眀攀爀∀Ⰰ "Chapter 6: System of Particles and Rotational Motion",਀                ∀䌀栀愀瀀琀攀爀 㜀㨀 䜀爀愀瘀椀琀愀琀椀漀渀∀Ⰰ "Chapter 8: Mechanical Properties of Solids",਀                ∀䌀栀愀瀀琀攀爀 㤀㨀 䴀攀挀栀愀渀椀挀愀氀 倀爀漀瀀攀爀琀椀攀猀 漀昀 䘀氀甀椀搀猀∀Ⰰ "Chapter 10: Thermal Properties of Matter",਀                ∀䌀栀愀瀀琀攀爀 ㄀㄀㨀 吀栀攀爀洀漀搀礀渀愀洀椀挀猀∀Ⰰ "Chapter 12: Kinetic Theory",਀                ∀䌀栀愀瀀琀攀爀 ㄀㌀㨀 伀猀挀椀氀氀愀琀椀漀渀猀∀Ⰰ "Chapter 14: Waves",਀                ∀䌀栀愀瀀琀攀爀 ㄀㔀㨀 䔀氀攀挀琀爀椀挀 䌀栀愀爀最攀猀 愀渀搀 䘀椀攀氀搀猀∀Ⰰ "Chapter 16: Electrostatic Potential and Capacitance",਀                ∀䌀栀愀瀀琀攀爀 ㄀㜀㨀 䌀甀爀爀攀渀琀 䔀氀攀挀琀爀椀挀椀琀礀∀Ⰰ "Chapter 18: Moving Charges and Magnetism",਀                ∀䌀栀愀瀀琀攀爀 ㄀㤀㨀 䴀愀最渀攀琀椀猀洀 愀渀搀 䴀愀琀琀攀爀∀Ⰰ "Chapter 20: Electromagnetic Induction",਀                ∀䌀栀愀瀀琀攀爀 ㈀㄀㨀 䄀氀琀攀爀渀愀琀椀渀最 䌀甀爀爀攀渀琀∀Ⰰ "Chapter 22: Electromagnetic Waves",਀                ∀䌀栀愀瀀琀攀爀 ㈀㌀㨀 刀愀礀 伀瀀琀椀挀猀 愀渀搀 伀瀀琀椀挀愀氀 䤀渀猀琀爀甀洀攀渀琀猀∀Ⰰ "Chapter 24: Wave Optics",਀                ∀䌀栀愀瀀琀攀爀 ㈀㔀㨀 䐀甀愀氀 一愀琀甀爀攀 漀昀 刀愀搀椀愀琀椀漀渀 愀渀搀 䴀愀琀琀攀爀∀Ⰰ "Chapter 26: Atoms",਀                ∀䌀栀愀瀀琀攀爀 ㈀㜀㨀 一甀挀氀攀椀∀Ⰰ "Chapter 28: Semiconductor Electronics: Materials, Devices and Simple Circuits"਀            崀 };਀ // Sample questions for the first chapter (you can expand this)਀        挀漀渀猀琀 焀甀攀猀琀椀漀渀猀 㴀 笀 "Chapter 1: Units and Measurements": [਀                笀 question: "Which of the following is a fundamental unit?",਀                    漀瀀琀椀漀渀猀㨀 嬀∀一攀眀琀漀渀∀Ⰰ ∀䨀漀甀氀攀∀Ⰰ ∀䬀椀氀漀最爀愀洀∀Ⰰ ∀圀愀琀琀∀崀Ⰰ answer: "Kilogram"਀                紀Ⰰ {਀                    焀甀攀猀琀椀漀渀㨀 ∀吀栀攀 匀䤀 甀渀椀琀 漀昀 攀氀攀挀琀爀椀挀 挀甀爀爀攀渀琀 椀猀㨀∀Ⰰ options: ["Volt", "Ampere", "Ohm", "Coulomb"],਀                    愀渀猀眀攀爀㨀 ∀䄀洀瀀攀爀攀∀ },਀                笀 question: "Which of the following is not a unit of length?",਀                    漀瀀琀椀漀渀猀㨀 嬀∀倀愀爀猀攀挀∀Ⰰ ∀䄀渀最猀琀爀漀洀∀Ⰰ ∀䈀愀爀渀∀Ⰰ ∀䰀椀最栀琀 礀攀愀爀∀崀Ⰰ answer: "Barn"਀                紀Ⰰ {਀                    焀甀攀猀琀椀漀渀㨀 ∀吀栀攀 搀椀洀攀渀猀椀漀渀愀氀 昀漀爀洀甀氀愀 昀漀爀 昀漀爀挀攀 椀猀㨀∀Ⰰ options: ["[MLT^-2]", "[ML^2T^-2]", "[MLT^-1]", "[M^2LT^-2]"],਀                    愀渀猀眀攀爀㨀 ∀嬀䴀䰀吀帀ⴀ㈀崀∀ },਀                笀 question: "Which instrument is used to measure very small distances?",਀                    漀瀀琀椀漀渀猀㨀 嬀∀嘀攀爀渀椀攀爀 挀愀氀椀瀀攀爀猀∀Ⰰ ∀匀挀爀攀眀 最愀甀最攀∀Ⰰ ∀䴀攀琀爀攀 猀挀愀氀攀∀Ⰰ ∀吀愀瀀攀 洀攀愀猀甀爀攀∀崀Ⰰ answer: "Screw gauge"਀                紀Ⰰ {਀                    焀甀攀猀琀椀漀渀㨀 ∀圀栀愀琀 椀猀 琀栀攀 匀䤀 甀渀椀琀 漀昀 琀攀洀瀀攀爀愀琀甀爀攀㼀∀Ⰰ options: ["Fahrenheit", "Celsius", "Kelvin", "Rankine"],਀                    愀渀猀眀攀爀㨀 ∀䬀攀氀瘀椀渀∀ },਀                笀 question: "Which of the following is a derived unit?",਀                    漀瀀琀椀漀渀猀㨀 嬀∀䴀攀琀攀爀∀Ⰰ ∀匀攀挀漀渀搀∀Ⰰ ∀䬀椀氀漀最爀愀洀∀Ⰰ ∀一攀眀琀漀渀∀崀Ⰰ answer: "Newton"਀                紀Ⰰ {਀                    焀甀攀猀琀椀漀渀㨀 ∀吀栀攀 渀甀洀戀攀爀 漀昀 猀椀最渀椀昀椀挀愀渀琀 昀椀最甀爀攀猀 椀渀 　⸀　　㈀㔀 椀猀㨀∀Ⰰ options: ["1", "2", "3", "4"],਀                    愀渀猀眀攀爀㨀 ∀㈀∀ },਀                笀 question: "Which of the following is not a fundamental quantity?",਀                    漀瀀琀椀漀渀猀㨀 嬀∀䰀攀渀最琀栀∀Ⰰ ∀䴀愀猀猀∀Ⰰ ∀吀椀洀攀∀Ⰰ ∀䘀漀爀挀攀∀崀Ⰰ answer: "Force"਀                紀Ⰰ {਀                    焀甀攀猀琀椀漀渀㨀 ∀吀栀攀 搀椀洀攀渀猀椀漀渀愀氀 昀漀爀洀甀氀愀 昀漀爀 瀀漀眀攀爀 椀猀㨀∀Ⰰ options: ["[ML^2T^-3]", "[MLT^-2]", "[ML^2T^-2]", "[MLT^-1]"],਀                    愀渀猀眀攀爀㨀 ∀嬀䴀䰀帀㈀吀帀ⴀ㌀崀∀ }਀            崀Ⰰ "Chapter 2: Motion in a Straight Line": [਀                笀 question: "What is the SI unit of acceleration?",਀                    漀瀀琀椀漀渀猀㨀 嬀∀洀⼀猀∀Ⰰ ∀洀⼀猀눀∀Ⰰ ∀洀눀⼀猀∀Ⰰ ∀猀⼀洀∀崀Ⰰ answer: "m/s²"਀                紀Ⰰ {਀                    焀甀攀猀琀椀漀渀㨀 ∀䄀 戀漀搀礀 椀猀 洀漀瘀椀渀最 眀椀琀栀 甀渀椀昀漀爀洀 瘀攀氀漀挀椀琀礀⸀ 䤀琀猀 愀挀挀攀氀攀爀愀琀椀漀渀 椀猀㨀∀Ⰰ options: ["Zero", "Positive", "Negative", "Variable"],਀                    愀渀猀眀攀爀㨀 ∀娀攀爀漀∀ },਀                笀 question: "The area under a velocity-time graph represents:",਀                    漀瀀琀椀漀渀猀㨀 嬀∀䄀挀挀攀氀攀爀愀琀椀漀渀∀Ⰰ ∀䐀椀猀琀愀渀挀攀∀Ⰰ ∀匀瀀攀攀搀∀Ⰰ ∀䐀椀猀瀀氀愀挀攀洀攀渀琀∀崀Ⰰ answer: "Displacement"਀                紀Ⰰ {਀                    焀甀攀猀琀椀漀渀㨀 ∀䄀 戀愀氀氀 椀猀 琀栀爀漀眀渀 瘀攀爀琀椀挀愀氀氀礀 甀瀀眀愀爀搀猀⸀ 䄀琀 琀栀攀 栀椀最栀攀猀琀 瀀漀椀渀琀Ⰰ 椀琀猀 瘀攀氀漀挀椀琀礀 椀猀㨀∀Ⰰ options: ["Maximum", "Minimum", "Zero", "Undefined"],਀                    愀渀猀眀攀爀㨀 ∀娀攀爀漀∀ },਀                笀 question: "The equations of motion are applicable when:",਀                    漀瀀琀椀漀渀猀㨀 嬀∀䄀挀挀攀氀攀爀愀琀椀漀渀 椀猀 稀攀爀漀∀Ⰰ ∀䄀挀挀攀氀攀爀愀琀椀漀渀 椀猀 挀漀渀猀琀愀渀琀∀Ⰰ ∀嘀攀氀漀挀椀琀礀 椀猀 挀漀渀猀琀愀渀琀∀Ⰰ ∀䴀漀琀椀漀渀 椀猀 挀椀爀挀甀氀愀爀∀崀Ⰰ answer: "Acceleration is constant"਀                紀Ⰰ {਀                    焀甀攀猀琀椀漀渀㨀 ∀䄀 挀愀爀 愀挀挀攀氀攀爀愀琀攀猀 昀爀漀洀 爀攀猀琀 愀琀 ㈀ 洀⼀猀눀⸀ 圀栀愀琀 椀猀 椀琀猀 瘀攀氀漀挀椀琀礀 愀昀琀攀爀 㔀 猀攀挀漀渀搀猀㼀∀Ⰰ options: ["2 m/s", "5 m/s", "10 m/s", "25 m/s"],਀                    愀渀猀眀攀爀㨀 ∀㄀　 洀⼀猀∀ },਀                笀 question: "Which of the following represents uniformly accelerated motion?",਀                    漀瀀琀椀漀渀猀㨀 嬀∀䘀爀攀攀 昀愀氀氀∀Ⰰ ∀䌀椀爀挀甀氀愀爀 洀漀琀椀漀渀∀Ⰰ ∀唀渀椀昀漀爀洀 挀椀爀挀甀氀愀爀 洀漀琀椀漀渀∀Ⰰ ∀䴀漀琀椀漀渀 漀昀 瀀攀渀搀甀氀甀洀∀崀Ⰰ answer: "Free fall"਀                紀Ⰰ {਀                    焀甀攀猀琀椀漀渀㨀 ∀吀栀攀 猀氀漀瀀攀 漀昀 愀 搀椀猀琀愀渀挀攀ⴀ琀椀洀攀 最爀愀瀀栀 最椀瘀攀猀㨀∀Ⰰ options: ["Acceleration", "Velocity", "Displacement", "Speed"],਀                    愀渀猀眀攀爀㨀 ∀匀瀀攀攀搀∀ },਀                笀 question: "A body is moving with a constant acceleration. Its velocity-time graph is a:",਀                    漀瀀琀椀漀渀猀㨀 嬀∀匀琀爀愀椀最栀琀 氀椀渀攀 瀀愀爀愀氀氀攀氀 琀漀 琀椀洀攀 愀砀椀猀∀Ⰰ ∀匀琀爀愀椀最栀琀 氀椀渀攀 眀椀琀栀 瀀漀猀椀琀椀瘀攀 猀氀漀瀀攀∀Ⰰ ∀倀愀爀愀戀漀氀愀∀Ⰰ ∀䠀礀瀀攀爀戀漀氀愀∀崀Ⰰ answer: "Straight line with positive slope"਀                紀Ⰰ {਀                    焀甀攀猀琀椀漀渀㨀 ∀䄀 猀琀漀渀攀 椀猀 搀爀漀瀀瀀攀搀 昀爀漀洀 愀 栀攀椀最栀琀 漀昀 ㈀　洀⸀ 吀栀攀 琀椀洀攀 琀愀欀攀渀 琀漀 爀攀愀挀栀 琀栀攀 最爀漀甀渀搀 椀猀㨀∀Ⰰ options: ["1 s", "2 s", "3 s", "4 s"],਀                    愀渀猀眀攀爀㨀 ∀㈀ 猀∀ }਀            崀Ⰰ "Chapter 3: Motion in a Plane": [਀                笀 question: "What is the path of a projectile in the absence of air resistance?",਀                    漀瀀琀椀漀渀猀㨀 嬀∀匀琀爀愀椀最栀琀 氀椀渀攀∀Ⰰ ∀䌀椀爀挀氀攀∀Ⰰ ∀倀愀爀愀戀漀氀愀∀Ⰰ ∀䠀礀瀀攀爀戀漀氀愀∀崀Ⰰ answer: "Parabola"਀                紀Ⰰ {਀                    焀甀攀猀琀椀漀渀㨀 ∀吀栀攀 栀漀爀椀稀漀渀琀愀氀 爀愀渀最攀 漀昀 愀 瀀爀漀樀攀挀琀椀氀攀 椀猀 洀愀砀椀洀甀洀 眀栀攀渀 琀栀攀 愀渀最氀攀 漀昀 瀀爀漀樀攀挀琀椀漀渀 椀猀㨀∀Ⰰ options: ["30°", "45°", "60°", "90°"],਀                    愀渀猀眀攀爀㨀 ∀㐀㔀뀀∀ },਀                笀 question: "In uniform circular motion, the acceleration is:",਀                    漀瀀琀椀漀渀猀㨀 嬀∀娀攀爀漀∀Ⰰ ∀䌀漀渀猀琀愀渀琀 椀渀 洀愀最渀椀琀甀搀攀 愀渀搀 搀椀爀攀挀琀椀漀渀∀Ⰰ ∀䌀漀渀猀琀愀渀琀 椀渀 洀愀最渀椀琀甀搀攀 戀甀琀 挀栀愀渀最椀渀最 搀椀爀攀挀琀椀漀渀∀Ⰰ ∀䌀栀愀渀最椀渀最 椀渀 洀愀最渀椀琀甀搀攀∀崀Ⰰ answer: "Constant in magnitude but changing direction"਀                紀Ⰰ {਀                    焀甀攀猀琀椀漀渀㨀 ∀吀栀攀 琀椀洀攀 漀昀 昀氀椀最栀琀 漀昀 愀 瀀爀漀樀攀挀琀椀氀攀 搀攀瀀攀渀搀猀 漀渀㨀∀Ⰰ options: ["Horizontal velocity", "Vertical velocity", "Both horizontal and vertical velocity", "Mass of the projectile"],਀                    愀渀猀眀攀爀㨀 ∀嘀攀爀琀椀挀愀氀 瘀攀氀漀挀椀琀礀∀ },਀                笀 question: "For a projectile, the horizontal component of velocity:",਀                    漀瀀琀椀漀渀猀㨀 嬀∀䤀渀挀爀攀愀猀攀猀 眀椀琀栀 琀椀洀攀∀Ⰰ ∀䐀攀挀爀攀愀猀攀猀 眀椀琀栀 琀椀洀攀∀Ⰰ ∀刀攀洀愀椀渀猀 挀漀渀猀琀愀渀琀∀Ⰰ ∀䘀椀爀猀琀 椀渀挀爀攀愀猀攀猀 琀栀攀渀 搀攀挀爀攀愀猀攀猀∀崀Ⰰ answer: "Remains constant"਀                紀 ]਀            ⼀⼀ 䄀搀搀 洀漀爀攀 挀栀愀瀀琀攀爀猀 眀椀琀栀 焀甀攀猀琀椀漀渀猀 愀猀 渀攀攀搀攀搀 };਀ // DOM elements਀        挀漀渀猀琀 猀甀戀樀攀挀琀匀攀氀攀挀琀椀漀渀 㴀 搀漀挀甀洀攀渀琀⸀最攀琀䔀氀攀洀攀渀琀䈀礀䤀搀⠀✀猀甀戀樀攀挀琀ⴀ猀攀氀攀挀琀椀漀渀✀⤀㬀 const chapterSelection = document.getElementById('chapter-selection');਀        挀漀渀猀琀 攀砀愀洀䌀漀渀昀椀最甀爀愀琀椀漀渀 㴀 搀漀挀甀洀攀渀琀⸀最攀琀䔀氀攀洀攀渀琀䈀礀䤀搀⠀✀攀砀愀洀ⴀ挀漀渀昀椀最甀爀愀琀椀漀渀✀⤀㬀 const examScreen = document.getElementById('exam-screen');਀        挀漀渀猀琀 爀攀猀甀氀琀猀匀挀爀攀攀渀 㴀 搀漀挀甀洀攀渀琀⸀最攀琀䔀氀攀洀攀渀琀䈀礀䤀搀⠀✀爀攀猀甀氀琀猀✀⤀㬀 const summaryScreen = document.getElementById('summary');਀         const physicsCard = document.getElementById('physics-card');਀        挀漀渀猀琀 猀甀戀樀攀挀琀一攀砀琀䈀琀渀 㴀 搀漀挀甀洀攀渀琀⸀最攀琀䔀氀攀洀攀渀琀䈀礀䤀搀⠀✀猀甀戀樀攀挀琀ⴀ渀攀砀琀ⴀ戀琀渀✀⤀㬀 const subjectNext = document.getElementById('subject-next');਀        挀漀渀猀琀 挀栀愀瀀琀攀爀䰀椀猀琀 㴀 搀漀挀甀洀攀渀琀⸀最攀琀䔀氀攀洀攀渀琀䈀礀䤀搀⠀✀挀栀愀瀀琀攀爀ⴀ氀椀猀琀✀⤀㬀 const chapterNext = document.getElementById('chapter-next');਀        挀漀渀猀琀 搀椀猀瀀氀愀礀匀甀戀樀攀挀琀 㴀 搀漀挀甀洀攀渀琀⸀最攀琀䔀氀攀洀攀渀琀䈀礀䤀搀⠀✀搀椀猀瀀氀愀礀ⴀ猀甀戀樀攀挀琀✀⤀㬀 const selectedChaptersList = document.getElementById('selected-chapters-list');਀        挀漀渀猀琀 氀漀愀搀儀甀椀稀 㴀 搀漀挀甀洀攀渀琀⸀最攀琀䔀氀攀洀攀渀琀䈀礀䤀搀⠀✀氀漀愀搀ⴀ焀甀椀稀✀⤀㬀 const quizContainer = document.getElementById('quiz');਀        挀漀渀猀琀 焀甀攀猀琀椀漀渀一愀瘀椀最愀琀椀漀渀 㴀 搀漀挀甀洀攀渀琀⸀最攀琀䔀氀攀洀攀渀琀䈀礀䤀搀⠀✀焀甀攀猀琀椀漀渀ⴀ渀愀瘀椀最愀琀椀漀渀✀⤀㬀 const previousBtn = document.getElementById('previous');਀        挀漀渀猀琀 渀攀砀琀䈀琀渀 㴀 搀漀挀甀洀攀渀琀⸀最攀琀䔀氀攀洀攀渀琀䈀礀䤀搀⠀✀渀攀砀琀✀⤀㬀 const submitBtn = document.getElementById('submit');਀        挀漀渀猀琀 琀椀洀攀爀䐀椀猀瀀氀愀礀 㴀 搀漀挀甀洀攀渀琀⸀最攀琀䔀氀攀洀攀渀琀䈀礀䤀搀⠀✀琀椀洀攀✀⤀㬀 ਀        ⼀⼀ 嘀愀爀椀愀戀氀攀猀 let selectedSubject = '';਀        氀攀琀 猀攀氀攀挀琀攀搀䌀栀愀瀀琀攀爀猀 㴀 嬀崀㬀 let currentQuestion = 0;਀        氀攀琀 甀猀攀爀䄀渀猀眀攀爀猀 㴀 嬀崀㬀 let timer;਀        氀攀琀 琀椀洀攀䰀攀昀琀㬀 let examType = 10; // Default to 10 questions਀        氀攀琀 愀氀氀儀甀攀猀琀椀漀渀猀 㴀 嬀崀㬀 ⼀⼀ 匀琀漀爀攀 愀氀氀 焀甀攀猀琀椀漀渀猀 昀漀爀 琀栀攀 攀砀愀洀 ਀        ⼀⼀ 䔀瘀攀渀琀 䰀椀猀琀攀渀攀爀猀 physicsCard.addEventListener('click', () => {਀            瀀栀礀猀椀挀猀䌀愀爀搀⸀挀氀愀猀猀䰀椀猀琀⸀愀搀搀⠀✀猀攀氀攀挀琀攀搀✀⤀㬀 subjectNextBtn.classList.remove('hidden');਀            猀攀氀攀挀琀攀搀匀甀戀樀攀挀琀 㴀 ✀倀栀礀猀椀挀猀✀㬀 });਀ subjectNext.addEventListener('click', () => {਀            猀甀戀樀攀挀琀匀攀氀攀挀琀椀漀渀⸀挀氀愀猀猀䰀椀猀琀⸀愀搀搀⠀✀栀椀搀搀攀渀✀⤀㬀 chapterSelection.classList.remove('hidden');਀            瀀漀瀀甀氀愀琀攀䌀栀愀瀀琀攀爀䰀椀猀琀⠀⤀㬀 });਀ chapterNext.addEventListener('click', () => {਀            椀昀 ⠀猀攀氀攀挀琀攀搀䌀栀愀瀀琀攀爀猀⸀氀攀渀最琀栀 㴀㴀㴀 　⤀ 笀 alert('Please select at least one chapter');਀                爀攀琀甀爀渀㬀 }਀            挀栀愀瀀琀攀爀匀攀氀攀挀琀椀漀渀⸀挀氀愀猀猀䰀椀猀琀⸀愀搀搀⠀✀栀椀搀搀攀渀✀⤀㬀 examConfiguration.classList.remove('hidden');਀            搀椀猀瀀氀愀礀匀攀氀攀挀琀攀搀䌀栀愀瀀琀攀爀猀⠀⤀㬀 });਀ loadQuiz.addEventListener('click', () => {਀            攀砀愀洀䌀漀渀昀椀最甀爀愀琀椀漀渀⸀挀氀愀猀猀䰀椀猀琀⸀愀搀搀⠀✀栀椀搀搀攀渀✀⤀㬀 examScreen.classList.remove('hidden');਀            攀砀愀洀吀礀瀀攀 㴀 瀀愀爀猀攀䤀渀琀⠀搀漀挀甀洀攀渀琀⸀焀甀攀爀礀匀攀氀攀挀琀漀爀⠀✀椀渀瀀甀琀嬀渀愀洀攀㴀∀攀砀愀洀ⴀ琀礀瀀攀∀崀㨀挀栀攀挀欀攀搀✀⤀⸀瘀愀氀甀攀⤀㬀 startExam();਀        紀⤀㬀 ਀        瀀爀攀瘀椀漀甀猀䈀琀渀⸀愀搀搀䔀瘀攀渀琀䰀椀猀琀攀渀攀爀⠀✀挀氀椀挀欀✀Ⰰ ⠀⤀ 㴀㸀 笀 if (currentQuestion > 0) {਀                挀甀爀爀攀渀琀儀甀攀猀琀椀漀渀ⴀⴀ㬀 showQuestion();਀            紀 });਀ nextBtn.addEventListener('click', () => {਀            椀昀 ⠀挀甀爀爀攀渀琀儀甀攀猀琀椀漀渀 㰀 攀砀愀洀吀礀瀀攀 ⴀ ㄀⤀ 笀 currentQuestion++;਀                猀栀漀眀儀甀攀猀琀椀漀渀⠀⤀㬀 }਀        紀⤀㬀 ਀        猀甀戀洀椀琀䈀琀渀⸀愀搀搀䔀瘀攀渀琀䰀椀猀琀攀渀攀爀⠀✀挀氀椀挀欀✀Ⰰ ⠀⤀ 㴀㸀 笀 clearInterval(timer);਀            猀栀漀眀刀攀猀甀氀琀猀⠀⤀㬀 });਀ // Functions਀        昀甀渀挀琀椀漀渀 瀀漀瀀甀氀愀琀攀䌀栀愀瀀琀攀爀䰀椀猀琀⠀⤀ 笀 chapterList.innerHTML = '';਀            猀甀戀樀攀挀琀猀嬀猀攀氀攀挀琀攀搀匀甀戀樀攀挀琀崀⸀昀漀爀䔀愀挀栀⠀挀栀愀瀀琀攀爀 㴀㸀 笀 const label = document.createElement('label');਀                挀漀渀猀琀 椀渀瀀甀琀 㴀 搀漀挀甀洀攀渀琀⸀挀爀攀愀琀攀䔀氀攀洀攀渀琀⠀✀椀渀瀀甀琀✀⤀㬀 input.type = 'radio';਀                椀渀瀀甀琀⸀渀愀洀攀 㴀 ✀挀栀愀瀀琀攀爀✀㬀 input.value = chapter;਀                椀渀瀀甀琀⸀愀搀搀䔀瘀攀渀琀䰀椀猀琀攀渀攀爀⠀✀挀栀愀渀最攀✀Ⰰ ⠀攀⤀ 㴀㸀 笀 if (e.target.checked) {਀                        猀攀氀攀挀琀攀搀䌀栀愀瀀琀攀爀猀 㴀 嬀挀栀愀瀀琀攀爀崀㬀 }਀                紀⤀㬀 ਀                氀愀戀攀氀⸀愀瀀瀀攀渀搀䌀栀椀氀搀⠀椀渀瀀甀琀⤀㬀 label.appendChild(document.createTextNode(chapter));਀                挀栀愀瀀琀攀爀䰀椀猀琀⸀愀瀀瀀攀渀搀䌀栀椀氀搀⠀氀愀戀攀氀⤀㬀 });਀        紀 ਀        昀甀渀挀琀椀漀渀 搀椀猀瀀氀愀礀匀攀氀攀挀琀攀搀䌀栀愀瀀琀攀爀猀⠀⤀ 笀 selectedChaptersList.innerHTML = '';਀            猀攀氀攀挀琀攀搀䌀栀愀瀀琀攀爀猀⸀昀漀爀䔀愀挀栀⠀挀栀愀瀀琀攀爀 㴀㸀 笀 const span = document.createElement('span');਀                猀瀀愀渀⸀挀氀愀猀猀一愀洀攀 㴀 ✀猀攀氀攀挀琀攀搀ⴀ挀栀愀瀀琀攀爀✀㬀 span.textContent = chapter;਀                猀攀氀攀挀琀攀搀䌀栀愀瀀琀攀爀猀䰀椀猀琀⸀愀瀀瀀攀渀搀䌀栀椀氀搀⠀猀瀀愀渀⤀㬀 });਀        紀 ਀        昀甀渀挀琀椀漀渀 猀琀愀爀琀䔀砀愀洀⠀⤀ 笀 // Get questions from selected chapters਀            愀氀氀儀甀攀猀琀椀漀渀猀 㴀 嬀崀㬀 selectedChapters.forEach(chapter => {਀                椀昀 ⠀焀甀攀猀琀椀漀渀猀嬀挀栀愀瀀琀攀爀崀⤀ 笀 allQuestions = allQuestions.concat(questions[chapter]);਀                紀 });਀             // Shuffle and select required number of questions਀            愀氀氀儀甀攀猀琀椀漀渀猀 㴀 猀栀甀昀昀氀攀䄀爀爀愀礀⠀愀氀氀儀甀攀猀琀椀漀渀猀⤀⸀猀氀椀挀攀⠀　Ⰰ 攀砀愀洀吀礀瀀攀⤀㬀 ਀            ⼀⼀ 䤀渀椀琀椀愀氀椀稀攀 甀猀攀爀 愀渀猀眀攀爀猀 userAnswers = new Array(allQuestions.length).fill(null);਀             // Start timer਀            琀椀洀攀䰀攀昀琀 㴀 攀砀愀洀吀礀瀀攀 ⨀ 㘀　㬀 ⼀⼀ ㄀ 洀椀渀甀琀攀 瀀攀爀 焀甀攀猀琀椀漀渀 startTimer();਀             // Create question navigation਀            挀爀攀愀琀攀儀甀攀猀琀椀漀渀一愀瘀椀最愀琀椀漀渀⠀⤀㬀 ਀            ⼀⼀ 䐀椀猀瀀氀愀礀 昀椀爀猀琀 焀甀攀猀琀椀漀渀 currentQuestion = 0;਀            猀栀漀眀儀甀攀猀琀椀漀渀⠀⤀㬀 }਀ function createQuestionNavigation() {਀            焀甀攀猀琀椀漀渀一愀瘀椀最愀琀椀漀渀⸀椀渀渀攀爀䠀吀䴀䰀 㴀 ✀✀㬀 for (let i = 0; i < examType; i++) {਀                挀漀渀猀琀 戀琀渀 㴀 搀漀挀甀洀攀渀琀⸀挀爀攀愀琀攀䔀氀攀洀攀渀琀⠀✀搀椀瘀✀⤀㬀 btn.className = 'question-nav-btn';਀                椀昀 ⠀椀 㴀㴀㴀 　⤀ 戀琀渀⸀挀氀愀猀猀䰀椀猀琀⸀愀搀搀⠀✀愀挀琀椀瘀攀✀⤀㬀 btn.textContent = i + 1;਀                戀琀渀⸀愀搀搀䔀瘀攀渀琀䰀椀猀琀攀渀攀爀⠀✀挀氀椀挀欀✀Ⰰ ⠀⤀ 㴀㸀 笀 currentQuestion = i;਀                    猀栀漀眀儀甀攀猀琀椀漀渀⠀⤀㬀 });਀                焀甀攀猀琀椀漀渀一愀瘀椀最愀琀椀漀渀⸀愀瀀瀀攀渀搀䌀栀椀氀搀⠀戀琀渀⤀㬀 }਀        紀 ਀        昀甀渀挀琀椀漀渀 猀栀漀眀儀甀攀猀琀椀漀渀⠀⤀ 笀 quizContainer.innerHTML = '';਀             const question = allQuestions[currentQuestion];਀            挀漀渀猀琀 焀甀攀猀琀椀漀渀䐀椀瘀 㴀 搀漀挀甀洀攀渀琀⸀挀爀攀愀琀攀䔀氀攀洀攀渀琀⠀✀搀椀瘀✀⤀㬀 questionDiv.className = 'question';਀             const questionText = document.createElement('p');਀            焀甀攀猀琀椀漀渀吀攀砀琀⸀琀攀砀琀䌀漀渀琀攀渀琀 㴀 怀␀笀挀甀爀爀攀渀琀儀甀攀猀琀椀漀渀 ⬀ ㄀紀⸀ ␀笀焀甀攀猀琀椀漀渀⸀焀甀攀猀琀椀漀渀紀怀㬀 questionDiv.appendChild(questionText);਀             question.options.forEach((option, index) => {਀                挀漀渀猀琀 漀瀀琀椀漀渀䐀椀瘀 㴀 搀漀挀甀洀攀渀琀⸀挀爀攀愀琀攀䔀氀攀洀攀渀琀⠀✀搀椀瘀✀⤀㬀 optionDiv.className = 'option';਀                 const input = document.createElement('input');਀                椀渀瀀甀琀⸀琀礀瀀攀 㴀 ✀爀愀搀椀漀✀㬀 input.name = 'answer';਀                椀渀瀀甀琀⸀瘀愀氀甀攀 㴀 漀瀀琀椀漀渀㬀 input.id = `option-${index}`;਀                椀渀瀀甀琀⸀挀栀攀挀欀攀搀 㴀 甀猀攀爀䄀渀猀眀攀爀猀嬀挀甀爀爀攀渀琀儀甀攀猀琀椀漀渀崀 㴀㴀㴀 漀瀀琀椀漀渀㬀 input.addEventListener('change', () => {਀                    甀猀攀爀䄀渀猀眀攀爀猀嬀挀甀爀爀攀渀琀儀甀攀猀琀椀漀渀崀 㴀 漀瀀琀椀漀渀㬀 updateQuestionNavigation();਀                紀⤀㬀 ਀                挀漀渀猀琀 氀愀戀攀氀 㴀 搀漀挀甀洀攀渀琀⸀挀爀攀愀琀攀䔀氀攀洀攀渀琀⠀✀氀愀戀攀氀✀⤀㬀 label.htmlFor = `option-${index}`;਀                氀愀戀攀氀⸀琀攀砀琀䌀漀渀琀攀渀琀 㴀 漀瀀琀椀漀渀㬀 ਀                漀瀀琀椀漀渀䐀椀瘀⸀愀瀀瀀攀渀搀䌀栀椀氀搀⠀椀渀瀀甀琀⤀㬀 optionDiv.appendChild(label);਀                焀甀攀猀琀椀漀渀䐀椀瘀⸀愀瀀瀀攀渀搀䌀栀椀氀搀⠀漀瀀琀椀漀渀䐀椀瘀⤀㬀 });਀             quizContainer.appendChild(questionDiv);਀             // Update navigation buttons਀            瀀爀攀瘀椀漀甀猀䈀琀渀⸀搀椀猀愀戀氀攀搀 㴀 挀甀爀爀攀渀琀儀甀攀猀琀椀漀渀 㴀㴀㴀 　㬀 nextBtn.disabled = currentQuestion === examType - 1;਀             // Update question navigation਀            甀瀀搀愀琀攀儀甀攀猀琀椀漀渀一愀瘀椀最愀琀椀漀渀⠀⤀㬀 }਀ function updateQuestionNavigation() {਀            挀漀渀猀琀 渀愀瘀䈀甀琀琀漀渀猀 㴀 焀甀攀猀琀椀漀渀一愀瘀椀最愀琀椀漀渀⸀焀甀攀爀礀匀攀氀攀挀琀漀爀䄀氀氀⠀✀⸀焀甀攀猀琀椀漀渀ⴀ渀愀瘀ⴀ戀琀渀✀⤀㬀 navButtons.forEach((btn, index) => {਀                戀琀渀⸀挀氀愀猀猀䰀椀猀琀⸀爀攀洀漀瘀攀⠀✀愀挀琀椀瘀攀✀Ⰰ ✀愀渀猀眀攀爀攀搀✀⤀㬀 if (index === currentQuestion) {਀                    戀琀渀⸀挀氀愀猀猀䰀椀猀琀⸀愀搀搀⠀✀愀挀琀椀瘀攀✀⤀㬀 }਀                椀昀 ⠀甀猀攀爀䄀渀猀眀攀爀猀嬀椀渀搀攀砀崀 ℀㴀㴀 渀甀氀氀⤀ 笀 btn.classList.add('answered');਀                紀 });਀        紀 ਀        昀甀渀挀琀椀漀渀 猀琀愀爀琀吀椀洀攀爀⠀⤀ 笀 timer = setInterval(() => {਀                琀椀洀攀䰀攀昀琀ⴀⴀ㬀 updateTimerDisplay();਀                 if (timeLeft <= 0) {਀                    挀氀攀愀爀䤀渀琀攀爀瘀愀氀⠀琀椀洀攀爀⤀㬀 showResults();਀                紀 }, 1000);਀             updateTimerDisplay();਀        紀 ਀        昀甀渀挀琀椀漀渀 甀瀀搀愀琀攀吀椀洀攀爀䐀椀猀瀀氀愀礀⠀⤀ 笀 const minutes = Math.floor(timeLeft / 60);਀            挀漀渀猀琀 猀攀挀漀渀搀猀 㴀 琀椀洀攀䰀攀昀琀 ─ 㘀　㬀 timerDisplay.textContent = `${minutes}:${seconds < 10 ? '0' : ''}${seconds}`;਀             // Add warning classes based on time left਀            琀椀洀攀爀䐀椀猀瀀氀愀礀⸀挀氀愀猀猀一愀洀攀 㴀 ✀✀㬀 if (timeLeft <= 300) { // 5 minutes਀                琀椀洀攀爀䐀椀猀瀀氀愀礀⸀挀氀愀猀猀䰀椀猀琀⸀愀搀搀⠀✀搀愀渀最攀爀✀⤀㬀 } else if (timeLeft <= 600) { // 10 minutes਀                琀椀洀攀爀䐀椀猀瀀氀愀礀⸀挀氀愀猀猀䰀椀猀琀⸀愀搀搀⠀✀眀愀爀渀椀渀最✀⤀㬀 }਀        紀 ਀        昀甀渀挀琀椀漀渀 猀栀漀眀刀攀猀甀氀琀猀⠀⤀ 笀 examScreen.classList.add('hidden');਀            爀攀猀甀氀琀猀匀挀爀攀攀渀⸀挀氀愀猀猀䰀椀猀琀⸀爀攀洀漀瘀攀⠀✀栀椀搀搀攀渀✀⤀㬀 ਀            ⼀⼀ 䌀愀氀挀甀氀愀琀攀 猀挀漀爀攀 let score = 0;਀             allQuestions.forEach((question, index) => {਀                椀昀 ⠀甀猀攀爀䄀渀猀眀攀爀猀嬀椀渀搀攀砀崀 㴀㴀㴀 焀甀攀猀琀椀漀渀⸀愀渀猀眀攀爀⤀ 笀 score++;਀                紀 });਀             const percentage = (score / examType) * 100;਀             // Display results਀            爀攀猀甀氀琀猀匀挀爀攀攀渀⸀椀渀渀攀爀䠀吀䴀䰀 㴀 怀 ਀            怀㬀 ਀            搀漀挀甀洀攀渀琀⸀最攀琀䔀氀攀洀攀渀琀䈀礀䤀搀⠀✀瘀椀攀眀ⴀ猀甀洀洀愀爀礀✀⤀⸀愀搀搀䔀瘀攀渀琀䰀椀猀琀攀渀攀爀⠀✀挀氀椀挀欀✀Ⰰ ⠀⤀ 㴀㸀 笀 showSummary();਀            紀⤀㬀 }਀ function showSummary() {਀            爀攀猀甀氀琀猀匀挀爀攀攀渀⸀挀氀愀猀猀䰀椀猀琀⸀愀搀搀⠀✀栀椀搀搀攀渀✀⤀㬀 summaryScreen.classList.remove('hidden');਀             let summaryHTML = '

Detailed Summary

';਀             allQuestions.forEach((question, index) => {਀                挀漀渀猀琀 甀猀攀爀䄀渀猀眀攀爀 㴀 甀猀攀爀䄀渀猀眀攀爀猀嬀椀渀搀攀砀崀㬀 const isCorrect = userAnswer === question.answer;਀                 summaryHTML += `਀                    㰀搀椀瘀 挀氀愀猀猀㴀∀猀甀洀洀愀爀礀ⴀ椀琀攀洀∀㸀

Question ${index + 1}: ${question.question}

਀                        㰀瀀㸀㰀猀琀爀漀渀最㸀夀漀甀爀 䄀渀猀眀攀爀㨀㰀⼀猀琀爀漀渀最㸀  ਀                                ␀笀甀猀攀爀䄀渀猀眀攀爀 簀簀 ✀一漀琀 愀渀猀眀攀爀攀搀✀紀 ਀                        㰀⼀瀀㸀

Correct Answer: ਀                            㰀猀瀀愀渀 挀氀愀猀猀㴀∀挀漀爀爀攀挀琀ⴀ愀渀猀眀攀爀∀㸀␀笀焀甀攀猀琀椀漀渀⸀愀渀猀眀攀爀紀㰀⼀猀瀀愀渀㸀

਀                    㰀⼀搀椀瘀㸀 `;਀            紀⤀㬀 ਀            猀甀洀洀愀爀礀匀挀爀攀攀渀⸀椀渀渀攀爀䠀吀䴀䰀 㴀 猀甀洀洀愀爀礀䠀吀䴀䰀㬀 }਀ // Utility function to shuffle array਀        昀甀渀挀琀椀漀渀 猀栀甀昀昀氀攀䄀爀爀愀礀⠀愀爀爀愀礀⤀ 笀 for (let i = array.length - 1; i > 0; i--) {਀                挀漀渀猀琀 樀 㴀 䴀愀琀栀⸀昀氀漀漀爀⠀䴀愀琀栀⸀爀愀渀搀漀洀⠀⤀ ⨀ ⠀椀 ⬀ ㄀⤀⤀㬀 [array[i], array[j]] = [array[j], array[i]];਀            紀 return array;਀        紀 ਀㰀⼀戀漀搀礀㸀