Explanation:
Silver bromide (AgBr) decomposes on exposure to light (photochemical decomposition) forming silver and bromine: 2AgBr(s) → 2Ag(s) + Br₂(g). This is used in photographic films to capture images. AgCl also light-sensitive but AgBr is primarily used. Calcium carbonate decomposition is thermal. Water electrolysis is electric decomposition.
Explanation:
BOD stands for Biological Oxygen Demand. It is a measure of the amount of dissolved oxygen required by microorganisms to decompose the organic matter present in a water sample. High BOD indicates severe organic pollution and poor water quality for aquatic life.
Consider the following statements: 1. Biofuels are renewable energy sources. 2. Biodiesel is produced by the transesterification of vegetable oils. Which is/are correct?
Explanation:
Biofuels, such as bioethanol and biodiesel, are derived from recent biological materials (biomass) and can be replenished, making them renewable. Biodiesel is specifically produced through transesterification, a chemical reaction where vegetable oils or animal fats react with an alcohol (like methanol) to form fatty acid methyl esters.
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