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Show that non-metallic oxides are acidic in nature
Show that non-metallic oxides are acidic in nature
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1)
Which of the following statements is true for acids?
Bitter and change blue litmus to red
Sour and change red litmus to blue
Sour and change blue litmus to red
Bitter and change red litmus to blue
2)
The more non-metallic character of an element represents, _______ oxide.
Less acidic
More acidic
Neutral
More basic
3)
The metal in metal oxide replaces the __________ from acid.
Water
Oxide
Hydrogen
None of these
4)
The formation of metal oxide on the surface of the metal is called
Cathodising
Acidification
None of these
Anodizing
5)
SO₃ + Mg(OH)₂ →
No reaction
Mg(OH)₂
H₂O
Mg(SO₄) + H₂O
6)
Black copper (II) oxide dissolves in colourless sulfuric acid to give:
Yellow solution of copper (II) sulfate
Blue solution of copper (II) sulfuric acid
Blue solution of copper (II) sulfate
None of these
7)
The black colour of copper oxide turns blue on treating with HCl because of:
Formation of cupric chloride
Formation of water
Release of hydrogen
Release of carbon dioxide
8)
The reaction between copper oxide and nitric acid forms:
Copper nitrate and water
Copper nitrite and hydrogen
Copper nitrite and water
Copper nitrate and hydrogen
9)
The oxide that can form salt and water with a base as well as with acid is :
Sulphur dioxide
Sodium Oxide
Aluminium oxide
Carbon monoxide
10)
Metallic oxides react with ………… to give salts and water, similar to the reaction of a/an ……… with an acid, metallic oxides are said to be basic oxides.
Bases, base
Acids, base
Acids, acid
Bases, acids