In which pair one has all unpaired d orbitals while other have all paired d orbitals
- Cr and Fe
- Cr and Zn
- Mn and Co
- Cu and Zn
Which of the following complex show a tetrahedral geometry?
- [Au(Cl)4]-
- [Fe(CO)5]
- [Pt(NH3)4]+2
- [Cu(CN)4]-2
Which of the following sulphate compound is insoluble in water?
- BeSO4
- CaSO4
- BaSO4
- MgSO4
Which group of the periodic table contain non-metals, metalloids and metals.
- VII A
- VI A
- I B
- IV A
AB4 type with no lone pairs geometry enables to form which shape of molecules
- Regular octahedron
- Regular pyramidal
- Regular tetrahedron
- Trigonal
Which of the following element has smaller size?
- Na
- Al
- Li
- K
A small building block which belongs to whole information about crystal structure is called
- Cell
- Crystal lattice
- Crystal unit
- Unit cell
An electrochemical cell is based upon which reaction
- Redox reaction
- Nuclear reaction
- Neutralization reaction
- Acid-base reaction
Which of the following term is state function?
- Enthalpy
- Sublimation
- Decomposition
- Freezing
The catalysis in which the catalyst and the reactants are in the same phase is known?
- Slow
- Fast
- Homogenous catalyst
- Heterogeneous catalyst
