Physics
Infrasonic vs. Ultrasonic
Infrasonic vs. Ultrasonic The Hook: Humans are partially deaf. We live in a narrow slice of the sound spectrum. While we chat, Elephants are whispering secrets below our hearing (Infrasonic), and Bats are screaming above our hearing (Ultrasonic). 1. The Frequency Ruler Sound is measured in Hertz (Hz) . Here is where humans stand compar…
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History
Harappa to Lothal: The Excavation Map
Harappa to Lothal: The Excavation Map Fact: The Indus Valley Civilization (IVC) was a Bronze Age society. The most confusing part for students is remembering "Which artifact came from which city?" . Did the Dancing Girl come from Harappa or Mohenjo-Daro? Let's dig in. 1. The Twin Capitals …
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Polity
President vs. Governor: The Power Scale
President vs. Governor: The Power Scale The Hook: A prisoner on Death Row sends a mercy petition to the Governor. Can the Governor sign a paper and set him free? The answer is NO . While the Governor has pardoning powers, they are not absolute like the President's. For SSC CGL and UPSC, the difference lies in Article 72 (President) a…
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Geography
The Gateways of India: Mountain Passes
The Gateways of India: Mountain Passes Terminology: In the Tibetan language, "La" means Pass. So, saying "Nathu La Pass" is technically incorrect (it means Nathu Pass Pass). These narrow gaps in the mountain ranges have been strategic trade routes (Silk Route) and invasion paths for centuries. For SSC CGL and UPS…
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Biology
Arteries vs. Veins: The Body's Highways
Arteries vs. Veins: The Body's Highways The "Blue" Myth: Look at your wrist. The veins look blue. Does that mean your blood is blue? NO. Blood is always red. Oxygenated blood is Bright Red, Deoxygenated blood is Dark Red. The "Blue" color is just an optical illusion caused by how light passes through skin. Fo…
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Polity
The 5 Writs: Weapons of Article 32
The 5 Writs: Weapons of Article 32 "If I was asked to name any particular article in this Constitution as the most important... I could not refer to any other article except this one. It is the very Heart and Soul of the Constitution." - Dr. B.R. Ambedkar on Article 32 Article 32 gives you the power to go directly to the Suprem…
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Biology
Virus vs. Bacteria: The Disease List
Virus vs. Bacteria: The Disease List The CGL Trap: "Typhoid is caused by a virus." (FALSE). "Common Cold is caused by bacteria." (FALSE). In exams, confusing the "Causative Agent" is the easiest way to lose 2 marks. To crack Biology in SSC CGL, you don't need to be a doctor. You just need to kno…
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