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Chapter 2
S Block Elements
Test - 4
1.
The only alkaline earth metal which reacts with alkalies releasing H
2
is
a) Beruyllium
b) Calcium
c) Bariam
d) Strontium
2.
BeO is
a) Acidic in nature
b) Basic in nature
c) Neither of these
d) Amphoteric in nature
3.
In Nelson's Cell method for the preparation of NaOH, at cathode.
a) Sodium reduces
b) Chlorine oxidizes
c) H
2
O reduces
d) None of these reactions occur
4.
The only alkaline earth metal which on reaction with oxygen at 500-600
2
Cforms peroxide is
a) Magnesium
b) Beryllium
c) Bariam
d) Calcium
5.
Alkali metal which explodes spontaneously when comes in contact with air or oxygen is
a) Sodium
b) Lithium
c) Caesium
d) Potassium
6.
In Nelson's Cell method for the preparation of NaOH, Cl
2
produced during the process may react with hydroxide ions in cold giving
a) None of these
b) Hypochlorite
c) Chlorate ion
d) Parchlorate ion
7.
Lithium
a) Spodumene
b) CaSO
4
. 2H
2
O
c) A rare radioactive metal
d) Unstable
8.
Magnesium
a) Spodumene
b) A rare radioactive metal
c) Epson Salt
d) Unstable
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