Related Questions

Which metal oxide is an amphoteric oxide?
A iron
B aluminium
C sodium
D potassium
Which of the following is an amphoteric oxide?
A Aluminium oxide
B Iron oxide
C Magnesium oxide
D Carbon dioxide
Which among the following metals provides amphoteric oxide ?
A Sodium
B Silver
C Aluminium
D Calcium
Which one of the following is an amphoteric oxide?
A CO2
B SO2
C Al2O3
D CuO
কোনটি উভধর্মী (amphoteric) যৌগ?
A H2O
B NH3
C H3O+
D HO-
নিম্নের কোন oxide টিকে উভধর্মী oxide বলে?
A CaO
B MgO
C ZnO
D CuO
Which of the following materials does not form adherent oxide film on surface?
A Copper
B Nickel
C Aluminium
D Gold & silver
Oxide of which of the following will turn red litmus blue?
A Magnesium
B Phosphorus
C Sulphur
D Carbon
Alumina, silica, lime and iron oxide are the basic raw material for the manufacture of portland cement. The component of Portland cement which first hardens is
A 5CaO . 3Al2O3
B 3CaO . Al2O3
C 3CaO . SiO2
D 2CaO . SiO2
Which metal does not undergo corrosion due to the formation of oxide layer?
A Copper
B Iron
C Aluminium
D Zinc

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