WorksheetsHYDROGEN
Total questions: 10
Worksheet time: 5mins
Non-stoichiometric hydrides are formed by -----
Pa , V
C , Ni
Mn, Li
N , Cl
The hardness of water can be determined by volumetrically using the reagent
sodium thio sulphate
EDTA
The cause of permanent hardness of water is due to
MgCO3
CaCl2
Ca(HCO3)2
Zeolite used to soften hardness of water is, hydrated
Zinc aluminium borate
Sodium aluminium silicate
Calcium aluminium silicate
Lithium aluminium hydride
The hybridisation of oxygen atom is H2 O and H2O2 are, respectively
sp and sp3
sp3 and sp3
sp and sp2
sp and sp
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–
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
Ionic hydrides are formed by
halogens
chalogens
group one elements
Heavy water is used as
modulator in nuclear reactions
coolant in nuclear reactions
both (a) and (b)
Water is a
basic oxide
acidic oxide
amphoteric oxide
