Question

3.
When a metal reacts with oxygen, the resulting oxide of the metal--
turns blue litmus red
is a neutral oxide
is a basic oxide
is a acidic oxide
4.
Out of the metals, gold, silver, copper and aluminium, the one that is most
ductile, is-
silver
gold
copper
aluminium
5.
Two of the metals, that cannot be stored either in air, or under water, are-
sodium and magnesium
magnesium and calcium
calcium and potassium
potassium and sodium
​

Answer 1

Answer:

Explanation:

3.     when metals react with oxygen , then the resulting oxides are basic in nature.

for example

2Mg + O2 ===> 2 MgO ( basic)

4.   gold

5.  potassium and sodium