Feldspars, Zeolites, Quartz

Micas, Zeolites, Clay

Asbestos, Quartz, Beryl

Micas, Clay, Asbestos

Zeolites, Micas, Quartz

Chain silicates and double chain silicates

Double chain silicates and sheet silicates

Sheet silicates and cyclic silicates

Cyclic silicates and chain silicates

Cyclic silicates and double sheet silicates

Thortveitite, Phenacite, Willemite

Benitoite, Beryl, Phenacite

Willemite, Zircone, Kaolinite

Phenacite, Willemite, Zircone

Beryl, Thortveitite, Kaolinite

Dolomite, Azurite, Chalcopyrite, Malachite

Cassiterite, Pyrolusite, Azurite, Galena

Pyrolusite, Magnetite, Siderite, Malachite

Dolomite, Azurite, Siderite, Malachite

Magnetite, Chalcopyrite, Malachite, Galena

Ni(0), Cu(I), Mg(II), Al(III)

Ni(0), Cu(I), Hg(II), Pt(II)

Cu(I), Cu(II), Hg(II), Fe(III)

Ag(I), Au(I), Zn(II), Mg(II)

Li(I), Ca(II), Al(III), Si(IV)

Ionic bond is non-directional.

Ionic compounds do not conduct electricity in their molten state.

Ionic compounds are highly soluble in non-polar solvents.

The rates of ionic reactions are very slow.

Ionic compounds have very low high melting and boiling points.

MgAl₂O₄ and Mn₃O₄

Fe₃O₄ and Mn₃O₄

MgAl₂O₄ and NiFe₂O₄

Fe₃O₄ and NiFe₂O₄

Fe₃O₄ and Co₃O₄

Lyman, Balmer and Paschen series

Balmer, Paschen and Pfund series

Paschen, Brackett, and Pfund series

Paschen, Balmer and Pfund series

Lyman, Balmer and Pfund series

Hydrogen has the simplest line spectrum among all the elements.

Absorption spectrum forms when atoms or molecules are excited from lower energy level to higher energy levels.

Emission spectrum forms when atoms or molecules are de-excited from higher energy level to lower energy level.

Line spectra are also known as molecular spectra.

Band spectrum forms due to the vibrations and rotations of atoms in molecules.

Hard and Soft Acids and Bases (HSAB) theory was introduced by Pearson.

Hard acids prefer binding to the soft bases.

Hard acids have high energy LUMOs, and hard bases have high energy HOMOs.

Hard acids and bases are small and non-polarisable.

Soft acids and bases are larger and more polarisable.

Ionic solids

Metallic solids

Molecular solids

Network solids

All of the above

Cubic

Tetragonal

Orthorhombic

Rhombohedral

Monoclinic

Cubic: a = b = c and α = β = γ = 90^o

Tetragonal: a = b ≠ c and α = β = γ = 90^o

Orthorhombic: a ≠ b ≠ c and α = β = γ = 90^o

Rhombohedral: a = b = c and α = β = γ ≠ 90^o

Monoclinic: a ≠ b ≠ c and α ≠ β ≠ γ ≠ 90^o

Adsorbate molecules are bound to the surface of adsorbent by chemical bonds.

Chemisorption is an endothermic process.

This process increases with increase in surface area of the adsorbent.

This process is highly specific in nature.

It is also known as activated adsorption.

The reference calomel electrode is made from HgCl₂.

Electrolysis involves oxidation and reduction respectively at cathode and anode.

The standard electrode potential is measured by galvanometer.

If a salt bridge is removed between the two half cells, the voltage will drop to zero.

In electroplating, the article to be electroplated serves as cathode.