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Iron sulphide...

Iron sulphide

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(a) Name the method used for removing gangue from sulphide ores. (b) How is wrought iron different from steel?

Select the correct substance from the substances A to J which react with sulphuric acid to give te product 1 to 10. [State whether the acid used in each case is dilute or concentrated]. A : Iron B : Sodium carbonate C : Sodium chloride D : Formic acid E : Sodium nitrate F: Sodium sulphite G : Ethyl alcohol H : Sodium sulphide I : Sodium hydroxide [excess ] J: Hydrogen sulphide Product - Hydrogen sulphide

Copper is extracted from sulphide ore using the method :

The extraction of metals from sulphide ore involves

Hydrogen sulphide is not a group reagent for (basic radical)

Draw the Lewis dot structure of Hydrogen sulphide molecule .

Give balanced equations for the following: Iron (II) sulphide is reacted with dilute hydrochloric acid.

Write equations for the reaction of dil HCI with each of the following - I ] iron , ii] sodium bicarbonate , iii] iron[II] sulphide , iv ] sodium sulphite.

Write the molecular formulae of : (a) Sodium sulphide (b) Magnesium oxide (c) Calcium hydroxide (d) Hydrogen chloride (e) Sulphuric acid (f) Iron (II) sulphide (g) Iron (III) sulphite (h) Nitric acid (i) Calcium phosphate (j) Aluminium sulphate (k) Magnesium nitride

State the observation for each of the following: Iron[II] sulphide is heated with dilute sulphuric acid and the gas evolved passed through lead acetate solution.