Select the incorrect match(es).
(i) Burning of magnesium ribbon - Combination reaction
(ii) Action of carbon dioxide on quick lime - Combination reaction
(iii) Exposure of silver bromide to light - Decomposition reaction
(iv) Addition of zinc to dilute sulphuric acid - Double displacement reaction
(v) Addition of an acid to a base to form a salt - single displacement reaction

Options

A. (i) and (iii) only
B. (ii), (iii) and (v) only
C. (v) only
D. (iv) and (v) only

Explanation

To solve the question, we need to analyze each statement and determine whether they correctly describe the type of chemical reaction.

### Step-by-Step Solution:

1. **Burning of magnesium ribbon - Combination reaction**
- When magnesium (Mg) burns in the presence of oxygen (O2), it forms magnesium oxide (MgO). This involves two reactants (Mg and O2) combining to form a single product (MgO).
- **Conclusion:** This statement is **correct**.

2. **Action of carbon dioxide on quick lime - Combination reaction**
- Quick lime is calcium oxide (CaO). When carbon dioxide (CO2) reacts with quick lime, it forms calcium carbonate (CaCO3). This is also a reaction where two reactants combine to form one product.
- **Conclusion:** This statement is **correct**.

3. **Exposure of silver bromide to light - Decomposition reaction**
- Silver bromide (AgBr) decomposes into silver (Ag) and bromine (Br2) when exposed to light. This is a single reactant breaking down into two products.
- **Conclusion:** This statement is **correct**.

4. **Addition of zinc to dilute sulphuric acid - Double displacement reaction**
- When zinc (Zn) is added to dilute sulphuric acid (H2SO4), it displaces hydrogen (H) from the acid, forming zinc sulfate (ZnSO4) and hydrogen gas (H2). This is a single displacement reaction, not a double displacement.
- **Conclusion:** This statement is **incorrect**.

5. **Addition of an acid to a base to form a salt - Single displacement reaction**
- When an acid reacts with a base, they typically undergo a neutralization reaction to form salt and water. This involves the exchange of ions between the acid and the base, which is characteristic of a double displacement reaction, not a single displacement.
- **Conclusion:** This statement is **incorrect**.

### Summary of Incorrect Matches:
- The incorrect matches are:
- (iv) Addition of zinc to dilute sulphuric acid - should be a **single displacement reaction**.
- (v) Addition of an acid to a base to form a salt - should be a **double displacement reaction**.

### Final Answer:
The incorrect matches are (iv) and (v).

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