Answer:
Following are the types of chemical reactions with a brief overview:
1) Combination (Two elements combine to form a compound)
2) Decomposition (A compound is broken into elements)
3) Single displacement (An element displaces an element present in a compound)
4) Double displacement (The elements of two compounds displace each other)
5) Combustion (Burning Takes places)
6) Redox (Oxidation Reduction Reaction)
If you see the given equation, Al is displacing Ni in the compound NiSO4 and taking its place. Ni is set free as a separate element. So this type of reaction is known as Single Displacement Reaction.
Answer:
None
Explanation:
Methylene is an organic compound and organic compounds consist of hydrogen atoms and Carbon atoms in n this case Methylene(CH2) has one carbon and two hydrogens .
Answer:
chimical change means when one or more new substances are formed.
Explanation:
Answer:
True
Explanation:
This is the true statement .
Because There are two types of metal coagulants used : aluminium and iron.
The aluminum coagulants include aluminum sulfate, aluminum chloride and sodium aluminate.
The iron coagulants include ferric sulfate, ferrous sulfate, ferric chloride and ferric chloride sulfate.
