Computer Science & Rajasthan GK – 100 Most Important MCQs for Competitive Exams

100 MCQs – Computer Science & Rajasthan GK /* ───────────── reset & base ───────────── */ * { margin: 0; padding: 0; box-sizing: border-box; } body { font-family: 'Segoe UI', Roboto, system-ui, sans-serif; background: #f4f7fc; color: #1e293b; padding: 2rem 1rem; min-height: 100vh; display: flex; justify-content: center; align-items: flex-start; } .container { max-width: 860px; width: 100%; background: #ffffff; border-radius: 2rem; box-shadow: 0 20px 60px rgba(0, 20, 50, 0.10); padding: 2rem 2rem 2.5rem; transition: all 0.2s; } /* ───────────── header ───────────── */ .header { text-align: center; margin-bottom: 2rem; border-bottom: 2px solid #e9eef3; padding-bottom: 1.25rem; } .header h1 { font-size: 1.9rem; font-weight: 700; letter-spacing: -0.3px; color: #0b2b4a; } .header h1 span { background: linear-gradient(145deg, #1a4b7a, #0f2f4f); color: #fff; font-size: 1rem; padding: 0.1rem 1rem; border-radius: 40px; margin-left: 0.6rem; font-weight: 500; } .header p { color: #5e6f8d; margin-top: 0.4rem; font-weight: 450; font-size: 0.95rem; } /* ───────────── progress ───────────── */ .progress-area { display: flex; align-items: center; gap: 1rem; margin-bottom: 1.8rem; flex-wrap: wrap; } .progress-track { flex: 1; min-width: 120px; height: 8px; background: #e2e8f0; border-radius: 20px; overflow: hidden; } .progress-fill { height: 100%; width: 0%; background: linear-gradient(90deg, #2563eb, #3b82f6); border-radius: 20px; transition: width 0.35s ease; } .q-counter { font-weight: 600; font-size: 0.95rem; color: #1e3a6b; background: #eef4ff; padding: 0.25rem 1rem; border-radius: 30px; white-space: nowrap; } .score-badge { font-weight: 600; font-size: 0.95rem; color: #0b4a2c; background: #e3f5eb; padding: 0.25rem 1rem; border-radius: 30px; white-space: nowrap; } /* ───────────── question card ───────────── */ .question-card { background: #fafcff; border-radius: 1.4rem; padding: 1.8rem 1.8rem 1.2rem; border: 1px solid #e6edf6; margin-bottom: 1.5rem; transition: border 0.2s; } .question-text { font-size: 1.2rem; font-weight: 550; line-height: 1.6; color: #0b2b4a; margin-bottom: 1.6rem; } .question-text .q-num { display: inline-block; background: #1a4b7a; color: #fff; font-weight: 700; font-size: 0.8rem; padding: 0.1rem 0.7rem; border-radius: 30px; margin-right: 0.6rem; vertical-align: middle; } .options { display: flex; flex-direction: column; gap: 0.6rem; } .option { display: flex; align-items: flex-start; gap: 0.8rem; padding: 0.7rem 1.2rem; background: #ffffff; border: 1.5px solid #dde5ef; border-radius: 14px; cursor: pointer; transition: all 0.15s ease; font-size: 0.98rem; line-height: 1.5; } .option:hover { border-color: #90b0d6; background: #f5f9ff; } .option.selected { border-color: #2563eb; background: #ebf2ff; box-shadow: 0 0 0 2px rgba(37, 99, 235, 0.15); } .option.correct-reveal { border-color: #16a34a; background: #ecfdf3; } .option.wrong-reveal { border-color: #dc2626; background: #fef2f2; } .option input[type="radio"] { margin-top: 0.2rem; accent-color: #2563eb; width: 17px; height: 17px; flex-shrink: 0; cursor: pointer; } .option .opt-label { font-weight: 500; color: #334e77; margin-right: 0.25rem; } .option .opt-text { color: #1e2f4a; } /* ───────────── feedback ───────────── */ .feedback { margin-top: 1.2rem; padding: 0.8rem 1.2rem; border-radius: 12px; font-weight: 500; font-size: 0.95rem; display: none; } .feedback.correct { display: block; background: #e3f5eb; color: #0b5a2e; border-left: 5px solid #16a34a; } .feedback.wrong { display: block; background: #fee9e9; color: #991b1b; border-left: 5px solid #dc2626; } .feedback .correct-answer { font-weight: 600; color: #0b5a2e; } /* ───────────── navigation ───────────── */ .nav-area { display: flex; justify-content: space-between; align-items: center; gap: 0.8rem; flex-wrap: wrap; margin-top: 1rem; } .nav-area button { padding: 0.7rem 1.8rem; border: none; border-radius: 40px; font-weight: 600; font-size: 0.95rem; background: #e9eef5; color: #1e3a6b; cursor: pointer; transition: all 0.2s; display: inline-flex; align-items: center; gap: 0.4rem; flex: 1 1 auto; justify-content: center; } .nav-area button:hover:not(:disabled) { background: #d0dcee; transform: translateY(-1px); } .nav-area button:disabled { opacity: 0.4; cursor: not-allowed; transform: none; } .nav-area .btn-primary { background: #1a4b7a; color: #fff; } .nav-area .btn-primary:hover:not(:disabled) { background: #0f3a5f; } .nav-area .btn-success { background: #16a34a; color: #fff; } .nav-area .btn-success:hover:not(:disabled) { background: #0e823b; } /* ───────────── results ───────────── */ .results { display: none; text-align: center; padding: 2rem 1rem; } .results .big-score { font-size: 4rem; font-weight: 800; color: #1a4b7a; line-height: 1.1; } .results .big-score span { font-size: 1.8rem; font-weight: 500; color: #5e6f8d; } .results .sub-text { color: #3d5675; font-size: 1.1rem; margin: 0.6rem 0 1.8rem; } .results .stat-grid { display: flex; justify-content: center; gap: 2.5rem; flex-wrap: wrap; margin: 1.8rem 0; } .results .stat-item { background: #f2f6fc; padding: 0.8rem 2rem; border-radius: 40px; font-weight: 500; } .results .stat-item .num { font-weight: 700; font-size: 1.3rem; } .results .stat-item.green .num { color: #16a34a; } .results .stat-item.red .num { color: #dc2626; } .results .stat-item.blue .num { color: #2563eb; } .results .btn-restart { background: #1a4b7a; color: #fff; border: none; padding: 0.8rem 2.8rem; border-radius: 40px; font-weight: 600; font-size: 1rem; cursor: pointer; transition: 0.2s; margin-top: 0.5rem; } .results .btn-restart:hover { background: #0f3a5f; transform: translateY(-2px); } /* ───────────── misc ───────────── */ .hidden { display: none !important; } /* ───────────── responsive ───────────── */ @media (max-width: 640px) { .container { padding: 1.2rem 1rem; } .header h1 { font-size: 1.4rem; } .question-text { font-size: 1rem; } .option { font-size: 0.92rem; padding: 0.6rem 0.9rem; } .nav-area button { padding: 0.6rem 1.2rem; font-size: 0.85rem; flex: 1 1 40%; } .progress-area { gap: 0.6rem; } .q-counter, .score-badge { font-size: 0.8rem; padding: 0.15rem 0.7rem; } .results .big-score { font-size: 3rem; } .results .stat-grid { gap: 1rem; } } @media (max-width: 420px) { .nav-area button { flex: 1 1 100%; } } 📚 MCQ Practice 100 Computer Science & Rajasthan General Knowledge 1 / 100 ✅ 0 ◀ Previous ⟳ Reset Next ▶ 📊 See Results 0 / 100 Keep practicing! ✅ Correct 0 ❌ Wrong 0 📌 Skipped 0 🔄 Start Over const questions = [{ id: 1, text: `[KVS PGT C.S. 2018] To load a byte of data parallelly into a shift register with a synchronous load, there must be:`, options: [ 'Synchronous clock and load signal', 'Asynchronous reset', 'Serial input', 'Tri-state output' ], answer: 0 }, { id: 2, text: `[Bihar STET C.S. 2020] What is a Firewall in a Computer Network? / कंप्यूटर नेटवर्क में फ़ायरवॉल क्या है?`, options: [ 'The physical boundary of Network', 'An operating system of computer Network', 'A system designed to prevent unauthorized access', 'A web browsing Software' ], answer: 2 }, { id: 3, text: `[Bihar STET C.S. 2020] Protocols are / प्रोटोकॉल हैं:`, options: [ 'Agreements on how communication components and DTEs are to communicate', 'Logical communication channels for transferring data', 'Physical communication channels used for transferring data', 'None of these' ], answer: 0 }, { id: 4, text: `[KVS PGT C.S. 2013] What will be the value of C in \`C = x++ + ++x + x + x\`, if \`x = 10\`?`, options: ['48', '45', '46', '49'], answer: 2 }, { id: 5, text: `[DSSSB TGT C.S. 01.08.2021] Digital certificates के संदर्भ में निम्नलिखित कथनों पर विचार करें:\nI. Digital certificates are used to verify the identity of the certificate holder.\nII. Digital certificates are based on public key cryptography.\nIII. These certificates are available only in one strength.`, options: ['I and II', 'Only III', 'Only II', 'I and III'], answer: 0 }, { id: 6, text: `[Bihar STET C.S. 2020] A physical connection between the microprocessor memory and other parts of the microcomputer is known as:`, options: ['Path', 'Address bus', 'Route', 'All of these'], answer: 1 }, { id: 7, text: `[LT. Grade C.S. 2018] What is the output of the C program: \`int main() { int index; for(index=1; index document.getElementById(id); const questionText = $('questionText'); const optionsContainer = $('optionsContainer'); const feedback = $('feedback'); const prevBtn = $('prevBtn'); const nextBtn = $('nextBtn'); const submitBtn = $('submitBtn'); const resetBtn = $('resetBtn'); const restartBtn = $('restartBtn'); const progressFill = $('progressFill'); const qCounter = $('qCounter'); const scoreBadge = $('scoreBadge'); const questionContainer = $('questionContainer'); const resultsContainer = $('resultsContainer'); const finalScore = $('finalScore'); const finalMessage = $('finalMessage'); const correctCount = $('correctCount'); const wrongCount = $('wrongCount'); const skippedCount = $('skippedCount'); function render() { if (state.finished) { showResults(); return; } const q = questions[state.current]; const idx = state.current; const selected = state.answers[idx]; const revealed = state.revealed[idx]; questionText.innerHTML = ` Q${idx+1} ${q.text.replace(/\n/g, '')} `; optionsContainer.innerHTML = ''; const labels = ['A', 'B', 'C', 'D']; q.options.forEach((opt, i) => { const div = document.createElement('div'); div.className = 'option'; if (selected === i) div.classList.add('selected'); if (revealed) { if (i === q.answer) div.classList.add('correct-reveal'); else if (selected === i && selected !== q.answer) div.classList.add('wrong-reveal'); } // Make the entire option div clickable div.addEventListener('click', () => selectOption(i)); const radio = document.createElement('input'); radio.type = 'radio'; radio.name = 'question'; radio.value = i; radio.checked = (selected === i); const labelSpan = document.createElement('span'); labelSpan.className = 'opt-label'; labelSpan.textContent = labels[i] + '.'; const textSpan = document.createElement('span'); textSpan.className = 'opt-text'; textSpan.textContent = opt; div.appendChild(radio); div.appendChild(labelSpan); div.appendChild(textSpan); optionsContainer.appendChild(div); }); if (revealed) { const isCorrect = (selected === q.answer); feedback.className = `feedback ${isCorrect ? 'correct' : 'wrong'}`; feedback.innerHTML = isCorrect ? '✅ Correct!' : `❌ Wrong. Correct answer: ${labels[q.answer]}. ${q.options[q.answer]}`; feedback.style.display = 'block'; } else { feedback.style.display = 'none'; } const total = questions.length; const answered = state.answers.filter(a => a !== null).length; progressFill.style.width = `${(answered / total) * 100}%`; qCounter.textContent = `${idx+1} / ${total}`; const correct = state.answers.reduce((acc, ans, i) => { return acc + (ans !== null && ans === questions[i].answer ? 1 : 0); }, 0); state.score = correct; scoreBadge.textContent = `✅ ${correct}`; prevBtn.disabled = (idx === 0); nextBtn.textContent = (idx === total - 1) ? '📊 Finish' : 'Next ▶'; nextBtn.className = (idx === total - 1) ? 'btn-success' : 'btn-primary'; submitBtn.classList.add('hidden'); } function selectOption(index) { if (state.finished) return; const idx = state.current; // Allow selecting/changing answer and auto-reveal feedback state.answers[idx] = index; state.revealed[idx] = true; render(); } function goPrev() { if (state.current > 0) { state.current--; render(); } } function goNext() { const idx = state.current; const total = questions.length; if (idx === total - 1) { finishQuiz(); return; } if (idx < total - 1) { state.current++; render(); } } function finishQuiz() { for (let i = 0; i < questions.length; i++) { if (state.answers[i] !== null && !state.revealed[i]) { state.revealed[i] = true; } } state.finished = true; render(); } function showResults() { questionContainer.style.display = 'none'; resultsContainer.style.display = 'block'; const total = questions.length; const correct = state.answers.reduce((acc, ans, i) => { return acc + (ans !== null && ans === questions[i].answer ? 1 : 0); }, 0); const wrong = state.answers.reduce((acc, ans, i) => { return acc + (ans !== null && ans !== questions[i].answer ? 1 : 0); }, 0); const skipped = total - correct - wrong; finalScore.innerHTML = `${correct} / ${total}`; correctCount.textContent = correct; wrongCount.textContent = wrong; skippedCount.textContent = skipped; const pct = Math.round((correct / total) * 100); let msg = ''; if (pct >= 90) msg = '🏆 Excellent! You\'re a quiz master!'; else if (pct >= 70) msg = '🌟 Great job! Keep learning!'; else if (pct >= 50) msg = '📖 Good effort! Review the topics you missed.'; else msg = '💪 Keep practicing — you\'ll get better!'; finalMessage.textContent = msg; progressFill.style.width = '100%'; qCounter.textContent = `${total} / ${total}`; scoreBadge.textContent = `✅ ${correct}`; } function resetQuiz() { state.current = 0; state.answers.fill(null); state.revealed.fill(false); state.finished = false; state.score = 0; questionContainer.style.display = 'block'; resultsContainer.style.display = 'none'; render(); } prevBtn.addEventListener('click', goPrev); nextBtn.addEventListener('click', goNext); resetBtn.addEventListener('click', resetQuiz); restartBtn.addEventListener('click', resetQuiz); document.addEventListener('keydown', (e) => { if (e.target.tagName === 'INPUT') return; if (e.key === 'ArrowRight' || e.key === 'Enter') { e.preventDefault(); if (!state.finished) goNext(); } if (e.key === 'ArrowLeft') { e.preventDefault(); if (!state.finished) goPrev(); } if (e.key === 'r' || e.key === 'R') { resetQuiz(); } }); render();

📚 MCQ Practice 100

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