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P Block Elements
Quiz 1
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Q.1
Which of the following ion has maximum oxidising power
ClO4-
BrO4-
IO4-
none of these
Q.2
What was the name of the combination of chlorine gas and carbon monoxide gas that wastimes more powerful than Chlorine?
Mustard
DiPhosgene
Phosgene
Chlorine 3
Q.3
ZnO + 2NaOH
Na2ZnO2 + H2O
Na2ZnO4 + H2O
Na2ZnO2 + 2H2O
Na2ZnO4 + 2H2O
Q.4
White phosphorous has characteristic
Onion like smell
Garlic like smell
Egg like smell
Fish like smell
Q.5
All elements in the Halogen family react violently because
Halogens have 1 valence electron that they give away readily to other elements in reactions
Halogens have 7 valence electrons which gives up massive energy when they give all seven to other elements
Halogens need only 1 electron which they will violently take from other elements
Halogens only react violently with water
Q.6
Conc HNO3 is yellow in colour due to presence of
NO2 dissolve in it
NO dissolve in it
N2O dissolve in it
N2O3 dissolve in it
Q.7
Chalcogens are
Group 15 elements
Group 16 elements
Group 17 elements
Group 18 elements
Q.8
Radioactive gas often found in basements. Formed from the radioactive decay of Radium.
Fluorine
Chlorine
Xenon
Radon
Q.9
Most reactive elemental gas.
Oxygen
Fluorine
Chlorine
Hydrogen
Q.10
Least reactive noble gas.
Xenon
Radon
Krpton
Helium
Q.11
Glows red/orange when electricity is passed through it.
Helium
Neon
Argon
Oxgyen
Q.12
Balance the ionic equation:Cl2 + KBr → Br+ KCl
Cl2 + 2KBr → Br2 + 2KCl
Cl2 + 2KBr → Br2 + KCl
Cl2 + KBr → Br2 + 2KCl
Q.13
How many valence electrons are in the element iodine?
1
4
7
8
Q.14
Name most metallic element in Group 14
Lead
Carbon
Silicon
Germanium
Q.15
States of groupelements are ...
fluorine - liquid, chlorine - gas, Bromine liquid, iodine solid
fluorine - gas, chlorine - gas, Bromine liquid, iodine gas
fluorine - gas, chlorine - gas, Bromine liquid, iodine solid
fluorine - gas, chlorine - gas, Bromine gas, iodine solid
Q.16
What is the oxidation number of Oxygen in OF2?
+2
0
+1
-2
Q.17
Correct order of boiling point is
H2O < H2S < H2Se < H2Te
H2O < H2Se < H2Te < H2S
H2Te < H2O < H2S < H2Se
H2S < H2Se < H2Te < H2O
Q.18
The molecular shape of SF4 is
square planar
see-saw
tetrahedral
bent 'T' shape
Q.19
Hydrogen bonding does NOT play any role in the boiling point of
NH3
H2O
HF
HI
Q.20
Silicones are inert and non-toxic because silicones
are inorganic polymers
are saturated molecules
have many hydrophobic groups
have strong Si—O and Si—C bonds
0 h : 0 m : 1 s
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