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Which group of elements includes the most reactive of all the metallic elements?
alkali metals
alkaline earth metals
coinage metals (Group 1B)
transition metals
Group 2B metals
Determine all of the covalent hydrides from the compounds listed below.
CaH2
H2S
SiH4
I only
II only
I and II
I and III
II and III
Based on the following options, select the substance with hydrogen in the +1 oxidation state.
KH
CH4
H2
AlH3
SrH2
Which of these substances is being considered as a replacement fuel for gasoline?
D2O
H2
NO2
F2
He
Phosphoric acid is the most important of the phosphorus oxoacids. Industrially, phosphoric acid is prepared by
the Ostwald process.
the Haber process.
the reaction of phosphate rock with sulfuric acid.
the reaction of P4O10 with water.
the Frasch process.
Which of the following choices is/are ionic oxides?
SrO
SiO2
SO2
I only
II only
III only
I and II
II and III
Which one of the following compounds can react with water to form oxygen gas?
PCl5
NO2
H2O2
KH
NH3
Which one of the following compounds can react with water to form hydrogen gas?
PCl5
NO2
H2O2
KH
NH3
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