Bauxite has the composition ______.

Wolframite ore is separated from tinstone by the process of________.

Considering Ellingham diagram, which of the following metals can be used to reduce alumina? 

AlF₃ is soluble in HF only in the presence of KF. It is due to the formation of _________.

The cation leaves its normal position in the crystal and moves to some interstitial position, the defect in the crystal is known as _____.

Describe a method for refining nickel. (or) Explain the Mond process of refining nickel.

Name the various refining process.

Give the structure of CO and CO₂.

What is an elementary reaction? Give the differences between order and molecularity of a reaction.

Rate of chemical reaction is not uniform throughout. Justify you answer:

Explain the electrometallurgy of aluminium.

Explain calcination with an example.

What are the uses of diborane?

Why ionic crystals are hard and brittle?

Show that in case of first order reaction, the time required for 99.9% completion is nearly ten times the time required for half completion of the reaction.

Atoms X and Y form bcc crystalline structure. Atom X is present at the corners of the cube and Y is at the centre of the cube. What is the formula of the compound?

What are stoichiometric defects in ionic solids? Explain

The initial rate of a first order reaction is 5.2 x 10^-6 mol lit^-1 S^-1 at 298 K. When the initial concentration of reactant is 2.6 x 10^-3 mol.lit^-1, calculate the first order rate constant of the reaction at the same temperature.