Cubic

Tetragonal

Orthorhombic

Rhombohedral

Monoclinic

The reference calomel electrode is made from HgCl₂.

Electrolysis involves oxidation and reduction at cathode and anode respectively.

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 a cathode.

Ionic solids

Metallic solids

Molecular solids

Network solids

All of the above

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

Endothermic process.

Increases with increase of surface area of the adsorbent.

Highly specific in nature.

It is also known as activated adsorption.

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 melting and boiling points.

MgA_l2O₄ and Mn₃O₄

Fe₃O₄ and Mn₃O₄

MgAl₂O₄ and NiFe₂O₄

Fe₃O₄ and NiFe₂O₄

Fe₃O₄ and Co₃O₄

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)

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

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

Hard acids prefer binding to 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 large and more polarisable.

Dolomite, Azurite, Chalcopyrite and Malachite

Cassiterite, Pyrolusite, Azurite and Galena

Pyrolusite, Magnetite, Siderite and Malachite

Dolomite, Azurite, Siderite and Malachite

Magnetite, Chalcopyrite, Malachite and Galena

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 is formed when atoms or molecules are excited from a lower energy level to a higher energy level.

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

Line Spectra are also known as molecular spectra.

Band spectra is formed due to the vibrations and rotations of atoms in molecules.

Thortveitite, Phenacite, Willemite

Benitoite, Beryl, Phenacite

Willemite, Zircone, Kaolinite

Phenacite, Willemite, Zircone

Beryl, Thortveitite, Kaolinite

Feldspars, Zeolites and Quartz

Micas, Zeolites and Clay

Asbestos, Quartz and Beryl

Mica, Clay and Asbestos

Zeolites, Mica and Quartz

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

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

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

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

Monoclinic : a ≠ b ≠ c and α ≠ β ≠ γ ≠ 90˚