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Chemistry Class 12 Chapter 5
The Halogens and the Noble Gases
Test 9
1.
Boiling point of noble gases down the group?
Remain same
First increase then decreases
Decreases
Increases
2.
Bleaching powder is not used for bleaching?
Cotton
Paper pulp
Linen
Costly fibers
3.
Which is the strongest acid?
HClO
2
HClO
3
HClO
4
HClO
4.
Which is the weakest reducing agent?
HBr
HCl
HI
HF
5.
In which compound of Xenon,oxidation state of Xenon is +4?
XeF
3
XeOF
2
Na
4
XeO
6
XeOF
4
6.
Zero group elements are called?
Rare earth metals
Noble gases
Alkyle halides
Metolloids
7.
Sodium hypochlorite is?
NaClO
2
NaClO
NaClO
3
NaClO
4
8.
The halogen which reacts with Kr,Xe or Rn is?
Iodine
Fluorine
Chlorine
Bromine
9.
The halogen which reacts slowly with the alkalis?
bromine
chlorine
fluorine
iodine
10.
Which is not the use of fluorine compound?
Sodium fluroacetate is a rat poison
SbF
3
is used for manufacturing of pottery
None of the above
CuF
2
is used in ceramic industry
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