96) The carbonate ore among the following is

A) Bauxite
B) Magnesite
C) Haematite
D) Carnalite

97) Identify an acidic flux among the following

A) SiO₂
B) CaO
C) MgO
D) CaCO₃

98) Which of the following electronic configuration violating Hund’s rule?

A) A
B) B
C) C
D) D

99) The classification of elements which is based on atomic number is

A) Dobereiner’s law of Triads
B) Newland’s law of octaves
C) Modern periodic table
D) Mandeleeff’s periodic table

100) Four quantum numbers of valence electron of sodium

A) 3,0,0,+½
B) 2,1,0,-½
C) 3,0,-1,+½
D) 2,0,0,-+½