Chemistry The method that cannot be used for removing permanent hardness of water is adding caustic soda distillation boiling adding sodium carbonate adding caustic soda distillation boiling adding sodium carbonate ANSWER DOWNLOAD EXAMIANS APP
Chemistry The electronic configuration of an atom having atomic number ‘20’ is 2, 8, 10 2, 6, 8, 4 2, 8, 8, 2 2, 10, 8 2, 8, 10 2, 6, 8, 4 2, 8, 8, 2 2, 10, 8 ANSWER DOWNLOAD EXAMIANS APP
Chemistry The most abundant inert gas in the atmosphere is Helium Neon Krypton Argon Helium Neon Krypton Argon ANSWER DOWNLOAD EXAMIANS APP
Chemistry The drug ‘Marijuana’ is a Hallucinating substance Mental stimulant Tranquillizer Sedative Hallucinating substance Mental stimulant Tranquillizer Sedative ANSWER DOWNLOAD EXAMIANS APP
Chemistry The main active constituent of tea and coffee is aspirin nicotine chlorophyll caffeine aspirin nicotine chlorophyll caffeine ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which among the following coal contains 90 per cent of carbon? Anthracite Peat Bitumen Lignite Anthracite Peat Bitumen Lignite ANSWER DOWNLOAD EXAMIANS APP
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