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