Practice questions without fighting the page.

<b>Correct option: C</b> <ul> <li><b>Explanation:</b> Tuberculosis is commonly called "white plague" due to the pale, wasted appearance of patients and the historical term from 19th‑century medicine.</li> <li><b>Key concept:</b> TB is a chronic infectious disease caused by Mycobacterium tuberculosis, affecting lungs primarily.</li> <li><b>Why others are incorrect:</b> Typhoid is a severe enteric fever; malaria is a mosquito‑borne fever with fever cycles; plague refers to Yersinia pestis infections.</li> <li><b>Exam tip:</b> Remember “white” links to pallor in TB; infectious diseases often labeled by symptoms/appearance.</li> </ul>

Indo-Aryan languages occupy the largest geographical area in the sub-continent. It stretches from Pakistan in the west to Bangladesh in the east, from Nepal in the north to Sri Lanka in the
south.

<div class="ai-exp-block"> <b>Explanation:</b> <p>The Tropic of Cancer is the northernmost latitude reached by theSun at noon on its solstices. It passes through parts of India, including Gujarat and Jharkhand. Mizoram lies near the eastern frontier and, despite being close to the Tropic line in some maps, is considered intersected along its northern fringe. Assam does not lie on this latitude. The correct combination shows states that the Tropic of Cancer traverses among the given options: Gujarat, Jharkhand, and Mizoram.</p> </div> <div class="ai-did-block"> <b>? Did You Know?</b><br> <p>The Tropic of Cancer is located at approximately 23.5°N latitude.</p> </div> <div class="ai-remember-block"> <b>? Remember:</b> <p>Tropic of Cancer crosses Gujarat, Jharkhand, and Mizoram among the options.</p> </div>

<div class="ai-exp-block"> <b>Explanation:</b> <p>Use the indefinite article a before a singular countable noun that begins with a consonant sound. "Fool" starts with the /f/ sound, a consonant sound, so we say: You are a fool to say that.</p> <p>Other options: "an" before vowel sounds (not here), "the" denotes something specific (not here), and zero articles is not correct with a singular countable noun after "are." Example: You are a student.</p> </div> <div class="ai-did-block"> <b>? Did You Know?</b><br> <p>Indefinite articles a/an are chosen by sound, not spelling: a university (sounds like /juː/ with a consonant sound). </p> </div> <div class="ai-remember-block"> <b>? Remember:</b> <p>A before consonant sound; An before vowel sound.</p> </div>