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
2
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.
3
AIPMT 2007
MCQ (Single Correct Answer)
Which of the following anions is present in the chain structure of silicates?
A
(Si2O$$_5^{2 - }$$)n
B
(SiO$$_3^{2 - }$$)n
C
SiO$$_4^{4 - }$$
D
Si2O$$_7^{6 - }$$
Explanation
[SiO32–]n and [Si4O11]6– have chain structure of
silicates.
4
AIPMT 2007
MCQ (Single Correct Answer)
Which of the following oxidation states are the most characteristic for lead and tin respectively?
A
+2, +4
B
+4, +4
C
+2, +2
D
+4, +2
Explanation
The tendency to from +2 ionic state increases
on moving down the group due to inert pair effect.
Most characteristic oxidation state for lead and tin
are +2, +4 respectively.
Questions Asked from p-Block Elements
On those following papers in MCQ (Single Correct Answer)
Number in Brackets after Paper Indicates No. of Questions
