Which of the following is/are the characteristics of metals?
a) ductile
b) malleable
c) conductor
d) all of these
The oxides and hydroxides of metals are…….
a) acids
b) bases
c) amphoteric
d) all of these
All metals are solid except…….
a) sodium
b) potassium
c) mercury
d) copper
A metal is one which reacts with …….. and produces a basic oxides.
a) nitrogen
b) water
c) CO2
d) oxygen
When basic oxides dissolve in water, they form…….solution which turns red litmus paper blue.
a) aqueous
b) alkaline
c) acidic
d) neutral
The modern scientific definition of metals is on the basis of loss or gain of……….
a) electron
b) proton
c) neuron
d) all of these
