Chemistry
Name the substance A to E, reacted with each reactant below to give the respective product/s. 1. 2. 3. 4. 5.
Related Questions
The process of dressing of the ore which involves separation of ore & gangue due to preferential wetting.
- Magnetic separation
- Hydrolytic method
- Froth flotation method
- Chemical method
The metallic oxide reduced to metal generally by thermal decomposition.
- ZnO
- MgO
- HgO
- Al2O3
Name the following :
(i) A metallic ore converted to it's oxide – iron [II] oxide on heating the concentrated ore.
(ii) A black metallic oxide reduced to metal on heating with coke.
(iii) The compound which on ignition at elevated temperatures gives pure alumina.
(iv) The non-metal which forms the anode during electrolytic reduction of fused alumina in Hall Heroult's process.
(v) A metal other than manganese, present in duralumin but not in magnalium.
Match the properties & uses of alloys in List 1 with the correct answer from List 2.
List 1 List 2 1. Contains Pb & Sn, has a low melting point & is used in electrical fuse A. Duralumin 2. Contains Cu, Zn, & Sn is hard, take up polish & used in statues and medals. B. Stainless steel 3. Contains Cu & Zn is hard, malleable & ductile & is used in electrical fittings. C. Solder 4. Contains Al & Cu is light & is used in aircrafts and pressure cooker. D. Brass 5. Contains Fe, Ni & Cr is corrosion resistant and is used in cutlery. E. Bronze