select correct statement (s)

Options

A. the role of a catalyst in a reversible reaction is to allow the equilibrium to be achieved quickly .
B. Diffusion process is involved in mechanism of heterogenous catalysis process
C. Hydrolysis of cane sugar is catalysed by `H^(+)`
D. promotors enhane the acitvity of a catayst

Answer

To solve the question of selecting the correct statements regarding catalysts and their roles in chemical reactions, we will analyze each option step by step.

### Step-by-Step Solution:

1. **Analyze Option 1:**
- **Statement:** "The role of catalyst in a reversible reaction is to allow the equilibrium to be achieved quickly."
- **Explanation:** A catalyst speeds up the rate of a reaction without changing the position of the equilibrium. Therefore, this statement is **true**.

2. **Analyze Option 2:**
- **Statement:** "Diffusion process is involved in the mechanism of heterogeneous catalysis."
- **Explanation:** Heterogeneous catalysis involves multiple steps, including the diffusion of reactants to the catalyst surface, adsorption, reaction, desorption, and finally, diffusion of products away from the catalyst. Since diffusion is indeed part of this process, this statement is **true**.

3. **Analyze Option 3:**
- **Statement:** "Hydrolysis of cane sugar is catalyzed by H+."
- **Explanation:** The hydrolysis of cane sugar (sucrose) is indeed catalyzed by hydrogen ions (H+), resulting in glucose and fructose. Therefore, this statement is **true**.

4. **Analyze Option 4:**
- **Statement:** "Promoters enhance the activity of a catalyst."
- **Explanation:** Promoters are substances that increase the effectiveness of a catalyst. For example, in the Haber process for ammonia synthesis, iron (Fe) acts as a catalyst, and certain promoters enhance its activity. This statement is also **true**.

### Conclusion:
Since all four options are correct, the final answer is that **all statements are true**.