MCQs On S-Block Elements-Chemistry

S-Block Elements

Prepared By: Saif-ur-Rehman Chachar

Question 1: Alkali metals form__________compounds.
a ionic
b covalent
c alkali
d metal

Question 2: The atomic and ionic radii___________from Li to Cs.
a increase
b medium
c decreases

Question 3: Cesium___________spontaneously in moist air.
a burns
b does notburn
c heat
d hot

Question 4: Beryl is an ore of_________
a calcium
b strontium
c Aluminum (Be3Al2(SiO3)6)
d beryllium

Question 5: Epsom salt is an ore of _______
a calsium
b lithum
c strontium
d magnesium

Question 6: The elements of group I-A are called alkali metals because their __________ are alkaline
a oxides
b hydroxides
c both
d none of above

Question 7: gypsum is an ore of _______
a calcium
b barium
c magnesium
d lithum

Question 8: Asbestos is an ore of_______________
a magnesium
b calcium
c tritium
d lithium

Question 9: Marble is an ore of ________
a magnesium
b calcium
c barium
d Aluminium

Question 10: The melting and boiling points of alkaline earth metals are ___________ than alkali metals.
a lower
b higher
c greater
d small

Question 11: Sodium amalgam is an alloy of sodium and__________
a mercury
b strontium
c lithium
d aluminium

Question 12: Densities____________ from Li to Cs
a increase
b decreases
c medium

Question 13: The oxidation states of alkali metals are_______
a +1
b +2
c +3
d +4

Question 14: The oxidation states of alkaline earth metals are _________
a +1
b -1
c +2
d -2

Question 15: The alkali earth metals are powerful.......... agents
a oxdizing
b reducing
c strong base
d strong acid
Explanation: Alkali metals are power reducing agents b/c they reduce more powerfully hyrogen,oxygen and chlorine ..ruducing means giving electrons and the atoms which accepts electron would be called as reduced.