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Write the product(s) in the following reactions:
Concept: Nomenclature of Haloalkanes and Haloarenes
Which would undergo SN2 reaction faster in the following pair and why ?
CH3 – CH2 – Br and CH3 – CH2 – I
Concept: Reactions of Haloalkanes - Nucleophilic Substitution Reactions
Indicate the principle behind the method used for the refining of Nickel.
Concept: Refining of Crude Metals
What is the role of dilute NaCN in the extraction of gold ?
Concept: Types of Separation or Concentration of an Ore >> Leaching
What is 'copper matte' ?
Concept: Occurrence of Metals
An element X (molar mass = 60 g mol−1) has a density of 6.23 g cm−3. Identify the type of cubic unit cell, if the edge length of the unit cell is 4 ✕ 10−8 cm.
Concept: Oxidation Reduction
How would you account the following :
Transition metals and their compounds show catalytic properties.
Concept: Reactions of Haloarenes - Reaction with Metals
Account for the following :
Reducing character decreases from SO2 to TeO2.
Concept: Oxidation Reduction
Outline the principles behind the refining of metals by the following methods:
Zone refining method
Concept: Refining of Crude Metals
Outline the principles behind the refining of metals by the following methods:
Chromatographic method
Concept: Refining of Crude Metals
Write the principle behind the following methods of refining:
Vapour-phase refining
Concept: Refining of Crude Metals
Write the product formed on reaction of D-glucose with Br2 water.
Concept: Reactions of Haloarenes - Nucleophilic Substitution
Write the principles of the following methods :
Froth floatation method
Concept: Types of Separation or Concentration of an Ore >> Froth Floatation Method
Write down the reaction taking place in blast furnace related to the metallurgy of iron in the temperature rnge 500 K – 800 K. What is the role of limestone in the metallurgy of iron?
Concept: Refining of Crude Metals
What happens when Copper matte is charged into silica lined converter and hot air blast is blown?
Concept: Refining of Crude Metals
Write chemical equation in support of your answer.
Out of 
Cl and 
CH2- Cl, which one is more reactive towards nucleophilic substitution reaction and why?
Concept: Reactions of Haloarenes - Nucleophilic Substitution
Name the method of refining which is Used to obtain semiconductor of high purity.
Concept: Refining of Crude Metals
Name the method of refining which is Used to obtain low boiling metal.
Concept: Refining of Crude Metals
Write chemical reactions taking place in the extraction of copper from Cu2 S.
Concept: Application of Thermodynamic Principles of Metallurgy
Why dextro and laevorotatory isomers of Butan-2-ol are difficult to separate by fractional distillation?
Concept: Physical Properties of Haloalkanes and Haloarenes
