CBSE
Multiple Choice QuestionsIn which of the following, the oxidation number of oxygen has been arranged in increasing order?
BaO2 < KO2 < O3 < OF2
OF2 < KO2 < BaO2 <O3
BaO2 < O3 < OF2 < KO2
KO2 < OF2 < O3 < BaO2
Which of the following is electron deficient
(CH3)2
(SiH3)2
(BH3)2
(BH3)2
The tendency of BF3, BCl3 and BBr3 to behave as Lewis acid decreases in the sequence
BCl3 > BF3 > BBr3
BBr3 > BCl2 > BF3
BBr3 > BF3 > BCl3
BBr3 > BF3 > BCl3
Which of the following structure is similar to graphite?
BN
B
B4
B4
The correct order of atomic radii in group 13 elements is
B < Al < In < Ga < Tl
B < Al < Ga < In < Tl
B < Ga < Al < In < Tl
B < Ga < Al < Tl < In
Name the type of the structure of silicates in which one oxygen atom of [SiO4]4- is shared?
Sheet silicate
Pyrosilicate
Three-dimensional silicate
Three-dimensional silicate
Among the following the least thermally stable is
K2CO3
Na2CO3
BaCO3
Li2CO3
The magnitude of screening effect depends upon the number of
inner electrons
outer electrons
bond order
Both (a) and (b)
The correct regarding the electronegativity of hybrid orbitals of carbon is:
sp> sp2<sp3
sp> sp2 > sp3
sp< sp2 > sp3
sp< sp2 > sp3
The basic structural unit of silicates is
SiO-
SiO24-
SiO32-
SiO32-
