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Std :X Shri Vile Parle Kelavani Mandal's C.N.M. School & N.D. Parekh Pre-Primary School CHEMISTRY WORKSHEET 2019 2020 ANION TEST (A) Sr. 1. BY ADDING DILUTE SULPHURIC ACID. Experiment Salt + dil. Sulphuric acid Pass the gas through lime water 2. Observation Brisk effervescence of a colourless odourless gas, which turns lime water milky. Inference (name and formula of the radical) ------------------------------------radical present Salt + dil. Sulphuric acid ---------------------------------Bring a moist lead acetate paper near the gas. Sulphide (S - -) present ---------------------------------------------------------------------------------------------------------------------------------------- 3. Salt + dil. Sulphuric acid (warm if necessary) Effervescence of a colourless, pungent gas, Pass the gas through acidified potassium dichromate solution Which turns acidified potassium dichromate solution green ------------------------------------radical present -----------------------------------------------------------------------------------------------------------------------------------------Chemistry Page 1 of 6
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