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Chemistry CBSE Live product
Class 10 (2026-27)
Chemical reactions and equations
Types of chemical reactions
9.
Exemplar - Types of reactions II
Question:
5
m.
Answer the following question:
Two colourless solutions X and Y are mixed. A compound Z is formed as an yellow insoluble substance and an aqueous salt solution.
Identify X, Y, and Z.
i. X is
Lead iodide
Lead nitrate
Sodium chloride
Barium chloride
ii. Y is
Sodium sulphate
Calcium chloride
Potassium iodide
Potassium chloride
iii. Z is
Carbon monoxide
Barium sulphate
Lead iodide
Lead oxide
iv. The balanced equation is
\(Pb(NO_3)_2 + 2KI → PbI_2 + 2KNO_3\)
\(K_2CO_3 → K_2O + CO_2\)
\(BaCl_2 + Na_2SO_4 → BaSO_4 + NaCl\)
\(Pb(NO_3)_2 + 2KI → PbO + 2KNO_3\)
v. Type of decomposition
Combination reaction
Single displacement reaction
Precipitation reaction
Neutralisation reaction
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