MEDIUM
Earn 100

Classify oxides into acidic, basic, amphoteric and neutral.

SO2, CO, CO2, NO2, N2O, Na2O, PbO, CuO, FeO

Important Questions on Chemical Reactions

MEDIUM
Non- metals react with oxygen to form acidic oxides.
HARD
Choose the most appropriate answer from the following list of oxides which fit the description. Each answer may be used only once.
[SO2, SiO2, Al2O3, MgO, CO, Na2O]
(i) A basic oxide.
(ii) An oxide which dissolves in water forming an acid.
(iii) An amphoteric oxide.
(iv) A covalent oxide of a metalloid.
MEDIUM
State one chemical property which can be used to distinguish a metal from a non-metal.
MEDIUM
Define amphoteric oxides. Give two examples of the oxides.
MEDIUM

Complete the following equations.

ZnO+H2SO4(dil)_____+H2O

EASY
What type of oxide (acidic or basic) is formed when Magnesium is burnt in oxygen?
MEDIUM

Define the following:

Amphoteric oxides

MEDIUM
What type of oxides are formed when metals combine with oxygen?
MEDIUM
The metal that react with acid as well as alkali are called _____.
MEDIUM
An element X (atomic number 17) reacts with an element Y (atomic number 20) to form a divalent halide. What will be the nature of oxide of element Y?
HARD
Name a reagent that reacts with a basic oxide and with an amphoteric oxide.
MEDIUM
Name a white insoluble oxide that dissolves in hot and concentrated caustic alkali.
EASY

From the list of oxides given, choose the oxide s that fit the description stated. Each oxide can be used once, more than once or not at all.

 

Sulphur Dioxide Magnesium Oxide Lithium Oxide
Aluminium (III) oxide Carbon dioxide Carbon monoxide
Nitrogen dioxide Nitrogen monoxide Lead (II) oxide

Reacts with both acids and alkalies.
MEDIUM
_____ oxides are also known as basic oxides.(Metal/Non-metal)
MEDIUM
An element forms an oxide which is basic in nature. State whether the element is a metal or a non-metal?
EASY
What type of oxide (acidic or basic) is formed when phosphorus is burnt in oxygen?
EASY
Consider the following elements:
Sodium, Sulphur, Carbon, Magnesium. Which of these elements will form basic oxides?
MEDIUM
Iron metal reacts slowly with the oxygen and moisture of damp air to form rust. State whether the rust formed is acidic, basic or neutral.
EASY
Give the products of the following chemical reaction:
Al2O3+HCl_____ +_____.
MEDIUM
Zinc oxide is said to have amphoteric nature but sodium oxide is not. Explain.