Calcium reacts with……liberating hydrogen gas.
a) base
b) salts
c) acids
d) water
Calcium reacts with……forming their respective halides.
a) water
b) halogen
c) acid
d) hydrogen
Which of the following is/are the uses of magnesium?
a) light alloy
b) photographic flashlight powder
c) deoxidant
d) all of these
Which of the following is/are the uses of calcium?
a) deoxidant in steel casting
b) extraction of uranium
c) decreases acidity of soil
d) all of these
Which of the following is/are soft metals?
a) alkali metals
b) alkaline earth metal
c) transition metals
d) both a and b
Which of the
following is/are hard metals?
a) alkali metals
b) alkaline
earth metal
c) transition metals
d) both a and b
