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Chemistry Class 12 Chapter 5
The Halogens and the Noble Gases
Test 7
1.
Which property is not possessed by bleaching powder?
Oxidizing agent
Mixed salt
Available chlorine 35-40%
Reducing agent
2.
Which compound of xenon is found in the liquid state?
XeO
2
XeF
6
XeF
4
XeO
3
3.
Which is the best method to prepare bleaching powder?
Hesenclever method
None of these
Both can be used
Beckmann method
4.
The increase in oxidation state of halogen from 1 to 7 accompined by?
Increase in acidic strength
Decrease In oxidation state
Increase in the thermal stability
All of these
5.
Which noble gas is the most abundant in the universe?
Ne
Ar
Kr
He
6.
Which of the oxyacids of the chlorine is the strongest acid?
HClO
3
HClO
2
HClO
4
HClO
7.
Oxidizing power of halogen does not depends upon?
Heat of hydration
Ionization energy
Electron affinity
Heat of fusion
8.
Fluorine is used as?
Teflon plastics
All of these
Formation of halothane
Toothpaste
9.
Cl2 reacts with NaOH in cold state to give?
NaClO
NaClO
2
NaClO
3
NaClO
4
10.
Which oxide of halogen reacts with carbon monoxide to form CO2?
Cl
2
O
I
2
O
5
ClO
Br
2
O
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