Classify each of the following reactions as combination- decomposition- displacement or double displacement reaction- -5 MARKS-1- H 2- Cl 2- 2 HCl2-2 KClO 3- 2 KCl -3 O 23- Zn - CuSO 4- ZnSO 4- Cu4- 2 Pb NO 32- 2 PbO s -4 NO 2- O 25- NaOH - HCl - NaCl - H 2 O

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Standard IX

Chemistry

Types of Chemical Reaction

Classify each...

Question

Classify each of the following reactions as combination, decomposition, displacement or double displacement reaction. [5 MARKS]

$H_{2} + {Cl}_{2} \to 2 HCl$

$2 {KClO}_{3} \to 2 KCl + 3 O_{2}$

$Zn + {CuSO}_{4} \to {ZnSO}_{4} + Cu$

$2 {Pb(NO}_{3})_{2} \to 2 PbO(s) + 4 {NO}_{2} + O_{2}$

$NaOH + HCl \to NaCl + H_{2} O$

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Solution

Each point: 1 Mark

Combination reaction

Decomposition reaction

Displacement reaction

Decomposition reaction

In double displacement reaction $\to$ Neutralization reaction

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Classify each of the following reactions as combination, decomposition, displacement or double displacement reaction. [5 MARKS]

Q. Rearrange the table with correct pairing.

Reactants	Products	Types of Reactions
$F e + S$	$N a C l + H_{2} O$	Oxidation
$C u S O_{4} + Z n$	$2 C u O$	Neutralization
$2 C u + O_{2}$	$Z n S O_{4} + C u$	Displacement
$H C l + N a O H$	$F e S$	Combination

Reactions are of 4 types: combination, decomposition, displacement& double displacement. Then this reaction :" NaHCO³ + HCl turns into NaCl + CO² + H²O " comes under which category?

The reaction, Zn + 2HCl → ZnCl₂+ H₂is an example of:

Q. Match the reactions in column I with their types in column II.

Coulmn I	Coulmn II
a. 2Pb $(N O_{3})_{2} \to 2 P b O + 4 N O_{2} + O_{2}$	i. Double displacement
b. $N_{2} + 3 H_{2} \to 2 N H_{3}$	ii. Displacement
c. Zn+ $H_{2} S O_{4} \to Z n S O_{4} + H_{2}$	iii. Combination
d. $A g N O_{3} + N a C l \to A g C l + N a N O_{3}$	iv. Decomposition

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Classify each of the following reactions as combination, decomposition, displacement or double displacement reaction. [5 MARKS] H2+Cl2→2HCl 2KClO3→2KCl+3O2 Zn+CuSO4→ZnSO4+Cu 2Pb(NO3)2→2PbO(s)+4NO2+O2 NaOH+HCl→NaCl+H2O

Each point: 1 Mark Combination reaction Decomposition reaction Displacement reaction Decomposition reaction In double displacement reaction → Neutralization reaction

Each point: 1 Mark

Combination reaction

Decomposition reaction

Displacement reaction

Decomposition reaction

In double displacement reaction $\to$ Neutralization reaction