p-Block Elements MCQs | Question – Paper 4


Topic: p-Block Elements, Test No.: 04, Total MCQs: 10

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Question 1
Which of the following molecules has trigonal planner geometry [CBSE AIPMT 2005]
A
NH3
B
BF3
C
PCl3
D
IF3
Question 2
Which is the most easily liquefiable rare gas? [Karnataka CET 2008]
A
Xe
B
Kr
C
Ar
D
Ne
Question 3
NO2 is not obtained on heating [WB-JEE 2011]
A
AgNO3
B
KNO3
C
Cu(NO3)2
D
Pb(NO3)2
Question 4
Which is the most thermodynamically stable allotropic form of phosphorus? [IIT-JEE 2005]
A
red
B
white
C
black
D
yellow
Question 5
Among the halogens, the one which is oxidised by nitric acid is: [Karnataka CET 2004]
A
Chlorine
B
Bromine
C
Fluorine
D
Iodine
Question 6
Which compound has the maximum number of lone pair of electrons on the central atom? [IIT-JEE 2005]
A
[ClO3]
B
XeF4
C
SF4
D
[I3]
Question 7
In XeF2, XeF4, XeF6 molecules, the number of lone pairs of Xe are respectively [AIEEE 2002]
A
2, 3 and 1
B
1, 2 and 3
C
4, 1 and 2
D
3, 2 and 1
Question 8
Roasting of sulphides gives the gas X as a byproduct This is a colorless gas with choking smell of burnt sulphur and causes great damage to respiratory organs as a result of acid rain. Its aqueous solution is acidic acts as a reducing agent and its acid has never been isolated. The gas X is [NEET 2013]
A
SO2
B
CO2
C
SO3
D
H2S
Question 9
The correct IUPAC name for [CrF2(en)2]Cl is: [NEET 2013]
A
Chloro difluoridobis (ethylene diamine) chromium (III)
B
Chloro difluorido ethylene diaminechromium (III) chloride
C
Difluoridobis (ethylene diamine) chromium (III) chloride
D
Difluorobis-(ethylene diamine) chromium (III) chloride
Question 10
Which one of the following is the correct statement? [AIEEE 2008]
A
Boric acid is a protonic acid
B
Beryllium exhibits coordination number of six
C
Chlorides of both beryllium and aluminium have bridged chloride structures in solid phase
D
B2H6.2NH3 is known as ‘inorganic benzene’
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