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#1
By TheQuizWire
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Hard
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Fact Checked
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09 Apr 2026
In the photoelectric effect, if the frequency of incident radiation exceeds the threshold but intensity is constant, increasing frequency results in:
💡 Explanation:Based on Einstein's photoelectric equation, the maximum kinetic energy of emitted electrons depends linearly on the frequency of incident light. While intensity affects the quantity of electrons (current), frequency determines their individual energy.
#2
By TheQuizWire
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Medium
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Fact Checked
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08 Apr 2026
Which property of water ensures that lakes freeze from the surface downwards, protecting aquatic life in sub-zero temperatures?
💡 Explanation:Water is unique because it reaches its maximum density at 4 degrees Celsius. As surface water cools below this point toward freezing, it becomes less dense and stays at the top, forming an insulating layer of ice while the depths remain liquid.
#3
By Zain
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Medium
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07 Apr 2026
Which mechanism serves as the primary instrument for Parliamentary oversight of the executive branch in a Westminster-style democracy?
💡 Explanation:Standing Committees act as the 'eyes and ears' of Parliament, providing a mechanism to scrutinize executive actions, monitor departmental performance, and ensure government accountability.
#4
By TheQuizWire
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Medium
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Fact Checked
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07 Apr 2026
Which layer of the Earth’s interior accounts for approximately 84 percent of the planet’s total volume?
💡 Explanation:The mantle is the thickest layer of the Earth, extending to a depth of about 2,900 kilometers and constituting the vast majority of the planet's volume.
#5
By Zain
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Medium
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05 Apr 2026
What primarily drives the rapid outflow of foreign portfolio investment from emerging markets during geopolitical crises?
💡 Explanation:Geopolitical instability increases perceived risk, prompting investors to move capital to 'safe-haven' assets, a phenomenon known as capital flight or the exit of 'hot money'.
#6
By Zain
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Medium
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05 Apr 2026
Which economic phenomenon is characterized by rising price levels triggered by increased costs of essential inputs like imported energy?
💡 Explanation:Cost-push inflation occurs when the costs of production increase, often due to supply shocks in essential commodities like oil, leading to a decrease in aggregate supply and higher domestic prices.
#7
By TheQuizWire
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Hard
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Fact Checked
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05 Apr 2026
In cellular respiration, how does the movement of protons across the inner mitochondrial membrane result in ATP production?
💡 Explanation:ATP is produced via chemiosmosis, where a proton gradient (H+ concentration) across the membrane provides the mechanical energy for the enzyme ATP synthase to phosphorylate ADP into ATP.
#8
By Zain
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Medium
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04 Apr 2026
Which two littoral states share the territorial waters of the Strait of Hormuz, necessitating joint protocols for maritime traffic?
💡 Explanation:The Strait of Hormuz is a strategic maritime chokepoint between the Persian Gulf and the Gulf of Oman. Its territorial waters are shared by Iran and Oman, who are responsible for managing traffic separation schemes and maritime security.
#9
By TheQuizWire
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Easy
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Fact Checked
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04 Apr 2026
Which celestial alignment is necessary for a total lunar eclipse to occur?
💡 Explanation:A lunar eclipse occurs when the Earth moves between the Sun and the Moon, causing the Earth's shadow to fall on the lunar surface during a full moon.
#10
By TheQuizWire
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Hard
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Fact Checked
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03 Apr 2026
Which principle of leadership did the Truman Doctrine establish for United States foreign policy during the Cold War?
💡 Explanation:The Truman Doctrine (1947) shifted US foreign policy from isolationism to a policy of containment, aiming to provide support to nations resisting attempted subjugation by armed minorities or outside pressures.
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