Chemistry
Name :
(a) a black metallic oxide which reacts with hydrochloric acid to give a coloured solution.
(b) two colourless gases, which when mixed produce a white solid
(c) two gases which chemically combine to form a liquid.
(d) a chloride which is soluble in excess of ammonium hydroxide.
(e) the chemical in which gold can be dissolved.
(f) the experiment which demonstrates that hydrogen chloride is soluble in water.
(g) the gas produced when chlorine water is exposed to sunlight.
(h) the acid which on mixing with silver nitrate solution produces a white precipitate which is soluble in excess of ammonium hydroxide.
(i) the gas which produces dense white fumes with ammonia gas.
(j) an element which reacts with hydrogen to form compound which is strongly acidic in water.
Related Questions
Fill in the blank from the choices in the bracket :
(a) Quicklime is not used to dry HCl gas because CaO is …………… [alkaline/acidic/neutral]
(b) When sodium chloride is heated with concentrated sulphuric acid below 200°C, one of the product formed is …………… (sodium hydrogen sulphate / sodium sulphate / chlorine).
A solution of hydrogen chloride in water is prepared.
The following substances are added to the solution taken in different test tubes
S. No. Substances added Gas evolved Odour 1 Calcium carbonate 2 Magnesium ribbon 3 Manganese(IV) oxide with heating 4 Sodium sulphide Complete the table by writing the gas evolved in case and it's odour.
Match the following reactions in column A with the gas evolved in column B :
Column A Column B (a) Potassium sulphite is treated with dilute hydrochloric acid. A. Cl2 (b) Concentrated hydrochloric acid is made to react with manganese dioxide. B. H2S (c) Iron sulphide reacts with dil. HCl C. SO2 (d) Calcium carbonate is added to dil. HCl D. CO2 Solution A reacts with an acid B (which gives greenish yellow gas on reacting with oxidising agents like Pb3O4) to give white precipitate C insoluble in nitric acid but soluble in ammonium hydroxide. Name A, B and C.