Which among the following is likely to show geometrical isomerism?

Options

A. `CH_(3)CH=CH_(2)`
B. `CH_(3)CH=N-OH`
C. `CH_(3)C(Cl)=C(CH_(3))_(2)`
D. `CH_(2)=CH-CH=C Cl_(2)`

Explanation

To determine which compound among the given options is likely to show geometrical isomerism, we need to analyze each compound based on the criteria for geometrical isomerism. Geometrical isomerism occurs when there is a double bond between two carbon atoms, and each carbon atom in the double bond must be attached to two different groups.

### Step-by-Step Solution:

1. **Identify the Compounds**:
- Option 1: CH3CH=CH2
- Option 2: CH3CH=NOH
- Option 3: CH3CCl=CH(CH3)
- Option 4: CH2=CH-CH=CCl2

2. **Analyze Option 1: CH3CH=CH2**:
- Structure:
- C1: CH3
- C2: CH (with one hydrogen and one CH3)
- C3: CH2
- At C2, both groups (CH3 and H) are different, but at C3, both groups (H and H) are the same.
- **Conclusion**: Does not show geometrical isomerism.

3. **Analyze Option 2: CH3CH=NOH**:
- Structure:
- C1: CH3
- C2: CH (with one hydrogen and one CH3)
- N: OH (with a lone pair)
- At C2, we have CH3 and H (different groups), and at N, we have OH and a lone pair (also different).
- **Conclusion**: Shows geometrical isomerism.

4. **Analyze Option 3: CH3CCl=CH(CH3)**:
- Structure:
- C1: CH3
- C2: CCl (with one CH3 and one Cl)
- At C2, we have CH3 and Cl (different groups), but at C1, both groups are CH3.
- **Conclusion**: Does not show geometrical isomerism.

5. **Analyze Option 4: CH2=CH-CH=CCl2**:
- Structure:
- C1: CH2
- C2: CH
- C3: C (with two Cl)
- At C2, we have CH2 and CH (different groups), but at C3, both groups are Cl.
- **Conclusion**: Does not show geometrical isomerism.

### Final Answer:
The compound that is likely to show geometrical isomerism is **Option 2: CH3CH=NOH**.