Chemistry Notes Ssc 2021 Jun 2026

Primarily caused by Chlorofluorocarbons (CFCs) released from refrigerators and air conditioners. The depletion occurs in the stratosphere. Key Gases and Fuels LPG (Liquefied Petroleum Gas): Composed mainly of Butane ( C4H10cap C sub 4 cap H sub 10 ) and Propane ( C3H8cap C sub 3 cap H sub 8 ). Ethyl Mercaptan ( C2H5SHcap C sub 2 cap H sub 5 cap S cap H

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Atoms of the same element with the same atomic number but different mass numbers (e.g., Hydrogen: Protium, Deuterium, Tritium). Ethyl Mercaptan ( C2H5SHcap C sub 2 cap

Increases across a period. Decreases down a group. Increases across a period

Caused by the presence of dissolved bicarbonates of calcium and magnesium . It can be removed simply by boiling the water.

Metals are malleable, ductile, sonorous, and good conductors of heat and electricity. The only metal that is liquid at room temperature. Sodium ( ) & Potassium (