__________process is based on the principle that differnet constituents of crude oil have different boiling points.

Options

A. Refining of oil
B. Fractional distillation
C. Fractionating tower
D. Both b and c

Answer

To solve the question, we need to identify the process that separates different constituents of crude oil based on their boiling points. Here’s a step-by-step breakdown:

### Step 1: Understand the Question
The question asks for a process that is based on the principle that different constituents of crude oil have different boiling points.

**Hint:** Think about how crude oil is separated into its components.

### Step 2: Identify the Options
The options provided are:
1. Refining of oil
2. Fractional distillation
3. Fractionating tower
4. Both fractional distillation and fractionating tower

**Hint:** Consider what each term means in the context of separating components of crude oil.

### Step 3: Analyze the Options
- **Refining of oil**: This is a broader term that includes various processes, but it does not specifically refer to the separation based on boiling points.

- **Fractional distillation**: This is a specific process used to separate mixtures based on differences in boiling points. It is commonly used for separating crude oil into its components.

- **Fractionating tower**: This is the equipment used in the process of fractional distillation, but it is not the name of the process itself.

- **Both fractional distillation and fractionating tower**: This option combines both terms, but the question specifically asks for the name of the process.

**Hint:** Focus on the definition of each term to find the one that directly answers the question.

### Step 4: Choose the Correct Answer
Given the analysis, the correct answer is **fractional distillation**. This process effectively separates the different constituents of crude oil based on their varying boiling points.

**Final Answer:** Fractional distillation

### Summary of Steps:
1. Understand the question.
2. Identify the options.
3. Analyze each option to determine its relevance.
4. Choose the correct answer based on the analysis.