Chemistry
Burning of a metal in air represents a :
- Combination reaction
- Displacement reaction
- Decomposition reaction
- Double displacement reaction
Answer
Combination reaction
Reason — A combination reaction occurs when two or more substances combine to form a single product. When a metal burns in air , it reacts with oxygen to form a metal oxide.
A displacement reaction occurs when one element replaces another in a compound. A decomposition reaction occurs when a compound breaks down into simpler substances. A double displacement reaction occurs when there is an exchange of ions between two compounds.
Related Questions
What do you observe when dilute sulphuric acid is added to barium chloride solution?
State the conditions required for the following reactions to occur :
(a) Decomposition of water into hydrogen and oxygen.
(b) Formation of iron sulphide from iron and sulphur.
(c) Reaction between zinc and dilute hydrochloric acid to produce hydrogen gas.
(d) Decomposition of potassium chlorate into potassium chloride and oxygen.
Which of the following reactions is a neutralization reaction ?
- When zinc reacts with dilute HCl
- Reaction between barium chloride solution and dilute H2SO4
- When carbon burns in air
- Sodium hydroxide reacts with dilute H2SO4
Which of the following oxides produces salt upon reacting with sodium hydroxide?
- Na₂O
- CaO
- NO
- ZnO