WorksheetsTYPES OF CHEMICAL REACTIONS
Total questions: 11
Worksheet time: 6mins
Name
Class
Date
1.
1. Which of the following is a combination reaction?
a)
CaCO₃ → CaO + CO₂
b)
B) 2H₂ + O₂ → 2H₂O
c)
C) 2KClO₃ → 2KCl + 3O₂
d)
D) NaOH + HCl → NaCl + H₂O
2.
Which of these is a displacement reaction?
a)
H₂ + Cl₂ → 2HCl
b)
B) 2KClO₃ → 2KCl + 3O₂
c)
C) Zn + CuSO₄ → ZnSO₄ + Cu
d)
D) NaOH + HCl → NaCl + H₂O
3.
Which of these reactions is a double displacement reaction?
a)
) C + O₂ → CO₂
b)
B) Fe + CuSO₄ → FeSO₄ + Cu
c)
C) NaCl + AgNO₃ → AgCl + NaNO₃
d)
D) 2H₂ + O₂ → 2H₂O
4.
Which is a decomposition reaction?
a)
Fe + S → FeS
b)
B) Na + Cl₂ → NaCl
c)
C) 2KClO₃ → 2KCl + 3O₂
d)
D) CuSO₄ + Zn → ZnSO₄ + Cu
5.
The burning of methane or butane gas is an example of
a)
decomposition
b)
B) combination
c)
C) combustion
d)
D) displacement
6.
Which of the following is a balanced chemical equation?
a)
H₂ + O₂ → H₂O
b)
B) 2H₂ + O₂ → 2H₂O
c)
C) H₂ + O₂ → 2H₂O
d)
D) 2H₂ + 2O₂ → 2H₂O
7.
A reaction which releases heat is called
a)
endothermic
b)
B) exothermic
c)
C) decomposition
d)
D) redox
8.
Which law is obeyed by a balanced chemical equation?
a)
Conservation of energy
b)
B) Conservation of atoms
c)
C) Conservation of mass
d)
D) Conservation of volume
9.
Which one is a double displacement reaction?
a)
Fe + CuSO₄ → FeSO₄ + Cu
b)
B) Zn + H₂SO₄ → ZnSO₄ + H₂
c)
C) BaCl₂ + Na₂SO₄ → BaSO₄ + 2NaCl
d)
D) 2H₂ + O₂ → 2H₂O
10.
The equation for photosynthesis is an example of
a)
decomposition
b)
B) combination
c)
C) endothermic
d)
D) both B and C
11.
The gas evolved when dilute HCl reacts with zinc is
a)
oxygen
b)
B) nitrogen
c)
C) chlorine
d)
D) hydrogen
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