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Double Displacement Reaction
Double Displacement Reaction
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1)
What is the precipitate formed on mixing the solution of barium chloride and sodium sulphate?
Barium sulphate
Sodium chloride
Barium sulphite
Sodium sulphite
2)
Identify the product A in the reaction Al₂O₃ (s) + HClO₄ (aq) --> ……… (aq) + H₂O (l)
AlClO₄
Al₃ClO₄
Al(ClO₄)₃
Al₂(ClO₄)₃
3)
Which of the following reactions represents the reaction between barium chloride and sodium sulphate correctly?
NaSO₄ + BaCl₂ → BaSO₄ + NaCl
Na₂SO₄ + BaCl → BaSO₄ + NaCl
Na₂SO₄ + BaCl₂ → BaSO₄ + 2NaCl
NaSO₄ + BaCl → BaSO₄ + NaCl
4)
Consider the reaction Aluminium sulphate + Calcium hydroxide--> Aluminium hydroxide +Calcium sulphate. The stoichiometric ratio for the balanced equation are respectively:
1:3:2:3
1:2:3:1
2:1:2:1
1:2:1:3
5)
Identify the precipitate obtained by the reaction between lead nitrate and sodium sulphate.
PbS
Pb(SO₄)₂
PbSO₄
NaNO₃
6)
Which one of the following is true about a double displacement reaction?
Electrolysis of water is an example of this reaction.
Two compounds exchange ions to form new compounds.
Only a single product is formed.
Reaction between MgO and water is an example for this reaction.
7)
Which one of the following represents a double displacement reaction?
A + B --> C
A + BC --> AC + B
C --> A +B
AB + CD --> AD + CB
8)
Geethu added a small quantity of dil. HCl into a precipitate of barium sulphate in a test tube obtained by adding barium chloride solution to sodium sulphate solution. Which one of the following is the correct observation?
The precipitate is soluble in HCl
The colour of the precipitate turns to yellow
Formation of brisk effervescence
Precipitate remains insoluble
9)
While performing an activity in the lab, four students added sodium sulphate solution to four different solutions taken in four different test tubes. In which test tube is a white precipitate observed after the reaction ?
10)
In which test tube is a white precipitate formed after a double displacement reaction?