Chemistry
Identify the following.
(a) Anode used in the electro refining of copper.
(b) A strong but non-volatile mineral acid.
(c) Name the process by which bauxite ore is purified.
(d) Name the process by which purified bauxite undergoes electrolytic reduction.
(e) The process of formation of positive and negative charge ions from molecules which are not initially in the ionic state.
Related Questions
The atomic mass of sulphur (S), oxygen (O) and carbon (C) are approximately 32, 16 and 12 respectively. Which of the following statements regarding the number of mole in 88 g of CO2 and 128 g of SO2 is correct?
P. 88g of CO2 contains equal number of moles in 128 g of SO2.
Q. 88g of CO2 contains double the number of moles in 128g of SO2
- Only P
- Only Q
- Both P and Q
- Neither P nor Q
The metal whose hydroxide is soluble in excess of sodium hydroxide solution is
- magnesium
- lead
- silver
- copper
Match the following Column I with Column II.
Column I Column II (a) Aluminium salts 1. H2SO4 (b) Fountain experiment 2. NH3 (c) Contact process 3. Solubility of hydrogen chloride (d) Fe(OH)3 4. Colourless (e) Haber's process 5. Reddish brown ppt. The following diagram shows an experimental set up for the laboratory preparation of pungent choking gas. The gas is acidic in nature.
(a) Name the gas collected in the jar and write the balanced chemical equation for the above preparation.
(b) How is the gas purified?
(c) Write the reaction of the gas produced with magnesium and ammonia.