A to F below are related to the source and extraction of either Zinc or Aluminium. A. Bauxite B. Coke C. Cryolite D. Froth floatation E. Sodium hydroxide solution F Zinc blende
Write down the three letters each from the list above, which are relevant to :
1. Zinc 2. Aluminium

A to F below are related to the source and extraction of either Zinc or Aluminium. A. Bauxite B. Coke C. Cryolite D. Froth floatation E. Sodium hydroxide solution F Zinc blende Write down the three letters each from the list above, which are relevant to : Aluminium

A to F below are related to the source and extraction of either Zinc or Aluminium. A. Bauxite B. Coke C. Cryolite D. Froth floatation E. Sodium hydroxide solution F Zinc blende Write the formula of cryolite.

A to F below relate to the source & extraction of either Zinc or Aluminium. A: Bauxite, B: Coke, C : Cryyolite, D : Froth flotation, E : Sodium hydroxide solution, F: Zinc blende. (i) Write down the three letters each from the above list which are relevant to - Aluminium (ii) Fill in the blanks using the most appropriate words from A to F : (a) The ore from which aluminium is extracted must first be treated with ______________so that pure Aluminium oxide can be obined. (b) Pure Aluminium oxide is dissolved in _____________ to make a conducting solution (iii) Write the formula of Cryolite.

A to F below are related to the source and extraction of either Zinc or Aluminium. A. Bauxite B. Coke C. Cryolite D. Froth floatation E. Sodium hydroxide solution F Zinc blende Pure aluminium oxide is dissolved in to make a conducting solution.

A to F below are related to the source and extraction of either Zinc or Aluminium. A. Bauxite B. Coke C. Cryolite D. Froth floatation E. Sodium hydroxide solution F Zinc blende The ore from which aluminium is extracted must first be treated with ............ so that pure aluminium oxide is obtained.

For each of the substance listed below, describe the role played in the extraction of aluminium. (1) Cryolite (2) Sodium hydroxide (3) Graphite.

Write the balanced chemical equations for the following : (a) Pb_(3)O_(4) is treated with nitric acid. (b) Zinc oxide is treated with excess of sodium hydroxide solution. (c) Dilute nitric acid is slowly reacted with metallic tin. (d) Gold is dissolved in aqua regia. (e) Iron reacts with cold dilute nitric acid. (f) Sodium thiosulphate is added slowly to silver nitrate. (g) Heating of ZnCI_(2).2H_(2)O .

From the list of characteristics given below, select the five which are relevant to non-metals and their compounds : A Ductile B Conduct electricity C Brittle D Acidic oxides E Basic oxides F Discharged at anode G Discharged at cathode H lonic chlorides 1 Covalent chlorides J Reaction with dilute sulphuric acid yields hydrogen K 1, 2 or 3 valence electrons L 5, 6 or 7 valence electrons (Write the five letters corresponding to the correct characteristics)

State the valencies of the following metallic elements -a] Potassium b] Sodium c] Calcium d] Magnesium e] Zinc f] Aluminium g] Chromium [write each symbol with the valency]

You are provided with the following chemicals: [Copper, Lead, Sodium hydroxide, Zinc, Copper oxide, Lead carbonate, Sodium carbonate solution, Dilute hydrochloric acid, Dilute nitric acid and Dilute sulphuric acid.] From the above list, name the chemicals which you would use to prepare each one of the following salts: Zinc sulphate