Starting from hydrogen gas how would you obtaind a.A neutral liquid b. A basic gas c. A metal by reduction of its heated oxide. [the metal formed is above iron in the activity series]

Starting from carbon dioxide how would you obtain A highly poisonous gas

Using sulphuric acid as one of the reactants, how would you obtain sulphur dioxide gas as one of the products using the following: An active metal below aluminium in the activity series of metals.

Starting from zinc how would you obtain hydrogen using - a. Steam b. A dilute acid c. An alkali give balanced equations for each & name the product formed in eahc case other than hydrogen] Name metal which will not react with the reactants above to give hydrogen.

Give balance equations for -i. A direct combination reaction involving two elements, one of which is a non metal ii. A thermal decomposition reaction involving heat on limestone [calcium carbonate] iii. An electrolytic decombosition reaction involving a neutral liquid iv. A displacement reaction involving a metal above hydrogen in the activity series with copper [II] sulphate solution v. A double decomposition neutralization reaction involving an acid & a base vi. A white precipitate obtained during a double decomposition reaction involving a silver salt with a sodium salt.

(a) What is reactivity series ? How does the reactivity series of metals help in predicting the relative activities of various metals ? (b) Suggest different chemical processes used for obtaining a metal from its oxides for metals in the middle of the reactivity series and metals towards the top of the reactivity series. Support you answer with one example each.

In the stages involved in the extraction of metals in general - give reasons for following Reduction of metallic oxides to metal in the extraction of metals from the ores - is based on the position of the metal in the activity series.

Select the correct answer from A,B,C,D or E for each statement give below: A. Nickel B: Sodium C: Iron D: Iron [III] oxide E: Magnesium oxide. The metallic compound formed when a metal above aluminium in the activity series reacts with steam.

The following materials are provided - solutions of cobalt chloride, ammonia, potassium permanganate, lime water, starch-iodide, sodium hydroxide, lead acetate, potassium iodide. Also provided are litmus and filter papers, glowing splinters and glass rods. Using the above how would you distinguish between: a] a neutral, acidic and a basic gas b] oxygen and hydrogen gas. c] carbon dioxide and sulphur dioxide gas d] chlorine and hydrogen chloride gas e) hydrogen sulphide and nitrogen dioxide gas f] ammonia and carbon dioxide gas g] zinc carbonate and potassium nitrate h] hydrated copper sulphate and anhydrous copper sulphate i] ammonium sulphate and sodium sulphate.

Using sulphuric acid as one of the reactants, how would you obtain sulphur dioxide gas as one of the products using the following: A yellow non-metal.

Match (A) cathode, (B) bauxite, (C) electrolytic reduction, (D) fuse metal, (E) gold, (F) cinnabar with its most correct description (i) - (vi) as given below. (i) It is an ore of a metal which is the major constituent of magnalium. (ii) Cations are reduced here. (iii) It is used to solder metal wires. (iv) It is an ore of metal which exists as liquid at room temperature. (v) It is most malleable. (vi) It is employed to isolate the metals high up in the activity series.