General Knowledge: World History, Geography & Cinema

In Hollywood film production, 'atmosphere' is the term used for background actors or extras who create the ambiance of a scene. They are sometimes referred to as 'atmosphere people' because they establish the atmosphere or mood of the setting.

Alam Ara (1931) directed by Ardeshir Irani was the first Indian talkie (film with sound). Don't confuse this with Raja Harishchandra (1913), which was the first Indian feature film but was silent. Alam Ara marked the transition from silent films to sound in Indian cinema.

Australia holds the world's largest known uranium reserves (approximately 30-35% of global total), primarily in regions like Olympic Dam and Ranger. Canada is second, Kazakhstan third. Russia and USA have significant but smaller reserves. Australia's uranium exports fuel many nuclear programs globally.

Jawaharlal Nehru was the second Satyagrahi after Vinoba Bhave, starting his Individual Satyagraha on November 7, 1940. This was Gandhi's limited protest strategy against British refusal to promise Indian independence during WWII. Nehru courted arrest and was jailed for the fourth time. The others were major Congress leaders but not the second in this specific sequence.

Aruna Asf Ali became a legendary figure of the Quit India Movement (1942) by bravely hoisting the Congress flag at Gowalia Tank Maidan after all senior leaders were arrested. She then organized underground sabotage and resistance activities at great personal risk. The other movements listed occurred in earlier decades with different leadership.

Jahangir granted permission to the English in 1613 to establish their first factory at Surat. This was a significant milestone as it gave the East India Company formal foothold in Mughal India for trade. Akbar (d. 1605) was earlier; Shahjahan and Aurangzeb were later rulers. Surat was then a thriving Mughal port city.

Dry cell batteries (Leclanche cells) use a paste of ammonium chloride (NH4Cl) as the primary electrolyte, often with zinc chloride (ZnCl2) added to reduce polarization and improve performance. Sodium chloride, magnesium chloride, and calcium chloride are not used in standard dry cells - they would not provide the right electrochemical properties.

Istanbul was known by multiple historical names: Constantinople (330 AD-1930), Byzantium (Greek colony before 330 AD), and Stamboul (Turkish colloquial variant). Option D lists all three. The city was renamed Istanbul officially in 1930. The other options are incomplete, missing at least one major historical name.

Nepal's official time zone is UTC+5:45, which is indeed 45 minutes ahead of India (UTC+5:30) and 15 minutes behind the next standard time zone (UTC+6:00). This unique quarter-hour offset makes Nepal the only country with a time difference of less than 30 minutes from adjacent time zones. Bhutan, Uganda, and Bolivia all use standard hourly time zones.