hydrolysis of CH3SiCl3 followed by condensation polymerisation
B
hydrolysis of (CH3)4Si by addition polymerisation
C
hydrolysis of (CH3)2SiCl2 followed by condensation polymerisation
D
hydrolysis of (CH3)3SiCl followed by condensation polymerisation.
Explanation
Hydrolysis of (CH3)2SiCl2 followed by
condensation polymerization.
2
AIPMT 2009
MCQ (Single Correct Answer)
The stability of +1 oxidation state among Al, Ga, In and Tl increases in the sequence
A
Al < Ga < In < Tl
B
Tl < In < Ga < Al
C
In < Tl < Ga < Al
D
Ga < In < Al < Tl
Explanation
The given elements belong to 13th group.
The elements mainly exhibit +3 and +1 oxidation
states. As we know, the stability of lower oxidation
state i.e., +1 state, increases on moving down the
group due to inert pair effect. The, stability follows
the order :
Al < Ga < In < Tl
3
AIPMT 2008
MCQ (Single Correct Answer)
The angular shape of ozone molecule (O3) consists of
A
1$$\sigma $$ and 1$$\pi $$ bond
B
2$$\sigma $$ and 1$$\pi $$ bond
C
1$$\sigma $$ and 2$$\pi $$ bonds
D
2$$\sigma $$ and 2$$\pi $$ bonds
Explanation
O3 molecule can be represented as
4
AIPMT 2007
MCQ (Single Correct Answer)
Which one of the following orders correctly represents the increasing acid strengths of the given acids?
A
HOClO < HOCl < HOClO3 < HOClO2
B
HOClO2 < HOClO3 < HOClO < HOCl
C
HOClO3 < HOClO2 < HOClO < HOCl
D
HOCl < HOClO < HOClO2 < HOClO3
Explanation
As the oxidation number of the central atom increases, strength of acid also increases.
Questions Asked from p-Block Elements
On those following papers in MCQ (Single Correct Answer)
Number in Brackets after Paper Indicates No. of Questions
