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Hydrogen
Quiz 3
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Q.1
Ionic hydrides are formed by
halogens
chalogens
group one elements
Q.2
In solid ice, oxygen atom is surrounded
octahedrally by 2 oxygen and 4 hydrogen atoms
tetrahedrally by 4 hydrogen atoms
tetrahedrally by 2 hydrogen and 2 oxygen atoms
Q.3
When hydrogen peroxide is shaken with an acidified solution of potassium dichromate in presence of ether, the ethereal layer turns blue due to the formation of
Cr2O3
CrO(O2)2
CrO4 2–
Q.4
The hybridisation of oxygen atom is H2 O and H2Oare, respectively
sp and sp3
sp3 and sp3
sp and sp2
sp and sp
Q.5
Non-stoichiometric hydrides are formed by -----
Pa , V
C , Ni
Mn, Li
N , Cl
Q.6
The cause of permanent hardness of water is due to
MgCO3
CaCl2
Ca(HCO3)2
Q.7
The hardness of water can be determined by volumetrically using the reagent
sodium thio sulphate
EDTA
Q.8
Only one element of ________ forms hydride.
group 6
group 7
group 8
group 9
Q.9
Elements of which of the following group(s) of periodic table do not form hydrides.
Groups 7, 8, 9
Group 13
Groups 15, 16, 17
Group 14
Q.10
Hydrogen peroxide is obtained by the electrolysis of
water
sulphuric acid
hydrochloric acid
fused sodium peroxide
0 h : 0 m : 1 s
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