Which of the following statements are wrong ?

Options

A. Zeolites are hydrated aluminosilicates which can be used as such as shape-selective catalysts.
B. Enzymes show maximum activity when pH is either very low or very high.
C. Enzymes show maximum activity at room temperature `(20-25^(@)C).`
D. Chemically, all enzymes are globular proteins.

Explanation

To determine which statements are wrong, we will analyze each option provided in the question.

**Step 1: Analyze the First Statement**
- The first statement claims that "zeolites are hydrated alumino silicates which can be used as shape-selective catalysts."
- This statement is incorrect because while zeolites are indeed hydrated alumino silicates, they cannot be used directly as catalysts. They need to be heated in a vacuum to remove their water of hydration before they can function effectively as catalysts.

**Step 2: Analyze the Second Statement**
- The second statement says, "enzymes show maximum activity when pH is very low or very high."
- This statement is also incorrect. Enzymes typically have an optimum pH around 7.4, which is neutral. Extreme pH levels (either very low or very high) can denature enzymes and reduce their activity.

**Step 3: Analyze the Third Statement**
- The third statement claims, "enzymes show maximum activity at room temperature (20 to 25 degrees Celsius)."
- This statement is incorrect as well. The optimum temperature for most enzymes is around 37 degrees Celsius, which is the normal body temperature for humans. Room temperature is generally not optimal for enzyme activity.

**Step 4: Analyze the Fourth Statement**
- The fourth statement states, "all enzymes are globular proteins."
- This statement is correct. Enzymes are indeed globular proteins, characterized by their coiled and folded polypeptide chains that form a spherical shape, making them soluble in water.

**Conclusion: Identify the Wrong Statements**
- The wrong statements from the options provided are:
1. First statement (about zeolites)
2. Second statement (about enzyme pH)
3. Third statement (about enzyme temperature)

Thus, the answer to the question is that the first, second, and third statements are incorrect.

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