Daily Current Affairs UPSC: News Based MCQs Quiz | 22nd September 2025

Answer: (C) Both 1 and 2

Detailed Explanation

• Soviet designers developed a unique “tailed delta” configuration with a very thin delta wing, which gave the aircraft maneuverability, high speed, good medium-altitude performance, and adequate take off and landing characteristics. The MiG-21 became the standard Soviet clear-air interceptor.
• Mig 21 were inducted by India from Russia in 1963

Answer: (B) Nicaragua

Detailed Explanation

Answer: (C) Both 1 and 2

Detailed Explanation

• The rate at which a black hole feeds on matter is governed by what astronomers call the Eddington limit. This limit — named after the English astronomer Arthur Stanley Eddington because he worked it out first — is also related to how brightly a black hole can shine.
• Nothing can escape a black hole of course. But when a black hole pullssurrounding matter towards itself, the infalling material becomes compressed, heats up, and emits radiation, especially X-rays.
• The concept behind the Eddington limit is straightforward: as matter collects around the black hole and gets packed into the disc, it heats up and emits radiation that generates an outward pressure capable of counteracting the gravitational pull of the black hole.
• When this radiation pressure balances the force of gravity, the black hole will stop accruing the matter. There is a limit on how brightly the black hole can shine.
• If this limit is crossed, the scenario is called a super-Eddington accretion.
• This is the category in which LID-568 lies.

Answer: (A) 1 only

Detailed Explanation

• The NAC meets at least every week and often more frequently, at the level of Permanent Representatives; it usually meets twice a year at the level of ministers of foreign affairs, three times a year at the level of ministers of defence, and occasionally at summit level with the participation of heads of state and government.
• However, this frequency can differ depending on the need of the Organization to discuss international developments and events.

Answer: (D) None of the above

Detailed Explanation

• Pratyush – Weather forecasting
• Rudra – Dense matter Calculations
• Param – First India-Built Supercomputer

Answer: (C) Both 1 and 2

Detailed Explanation

• The Balfour Declaration was a 1917 British government statement expressing support for a “national home for the Jewish people” in Palestine, then part of the Ottoman Empire, during World War I.
• Written by British Foreign Secretary Arthur Balfour , promised to use Britain’s best efforts to achieve this, while also stating that nothing should be done to prejudice the civil and religious rights of Palestine’s existing non-Jewish population.
• The declaration is highly controversial, as it was seen as a commitment to Zionist aspirations without the consent of the local Arab population, a key factor in the ongoing Arab-Israeli conflict.
• The Hussein-McMahon Correspondence was an exchange of letters between the British High Commissioner in Egypt, Sir Henry McMahon, and the Sharif of Mecca, Hussein bin Ali, in 1915-1916. In this wartime agreement, Britain promised to support Arab independence in a large part of the Middle East if the Arabs launched a revolt against the Ottoman Empire.
• The Arab Revolt against the Ottoman Empire in 1916 was driven by a desire for independence from increasingly oppressive Ottoman rule, which had become centralized and focused on Turkish nationalism. Arab leaders like Sharif Hussein saw an opportunity during World War I, allied with the British and French, who promised to support the creation of a unified Arab state in return for help against the Ottomans.