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