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<div class="ai-exp-block"> <b>Explanation:</b> <p>Use the indefinite article a before a singular, countable noun when you are mentioning it for the first time and it is not specific. The word message starts with a consonant sound, so the correct form is <i>a</i> message. Using <i>an</i> would be before a vowel sound (e.g., <i>an hour</i>), not here. <i>The</i> would refer to a specific message, which isn’t indicated. Zero articles would omit any article, which is incorrect for a singular countable noun here. Example: He sent a message after the call.</p> </div> <div class="ai-did-block"> <b>? Did You Know?</b><br> <p>Indefinite articles A and An are used before singular, countable nouns; choose A before consonant sounds and An before vowel sounds.</p> </div> <div class="ai-remember-block"> <b>? Remember:</b> <p>A before consonant sound → a</p> </div>

The Brahmaputra originates in the Chemayungdung mountain ranges in Tibet.

On 27 August, 2006 by Government of Tripura and Global Educational Net (GENET) in a Public-Private Partnership

<b>Correct option: C</b> — to make Soap. <ul> <li><b>Reason</b>: Sodium stearate is a soap; it is formed by the saponification of fats/oils with a strong base. The reaction yields glycerol and soap (sodium stearate).</li> <li><b>Key concept</b>: Saponification—fat/oil + NaOH → glycerol + fatty acid salt (soap).</li> <li><b>Simple formula</b>: Fat + NaOH → Glycerol + Sodium stearate (soap).</li> <li><b>Why other options are wrong</b>: Gunpowder, paint, and fertilizer do not require sodium stearate as a primary component.</li> <li><b>Exam tip</b>: Recognize salts of fatty acids as soaps; look for “stearate” or similar names.</li> </ul>

<b>Explanation</b> <ul> <li>Correct answer: <b>B. Bhagat Singh</b> — He was a 20th-century freedom fighter who fought in the 1920s-1930s, not in the 1857 Revolt.</li> <li>Participants in the Revolt of 1857 included: <ul> <li><b>Rani Laksmi Bai</b> fought in central India for the cause of independence.</li> <li><b>Tantya Tope</b> led guerrilla actions against the British after 1857.</li> <li><b>Nana Saheb</b> joined the revolt and claimed rights for his adopted son.</li> </ul> </li> <li>Thus, Bhagat Singh did not participate in 1857; he belonged to a later period of India's freedom struggle.</li> </ul>

transmitted by mosquitoes 'Aedes aegypti'.

The Pong Dam, also known as the Beas Dam, is situated in the state of Himachal Pradesh. It is located on the Beas River in the Kangra district of Himachal Pradesh. The dam is specifically located near the town of Talwara. The primary purpose of the Pong Dam is to regulate the flow of the Beas River, store water for irrigation, generate hydroelectric power, and help manage flood control in the downstream areas.