Read the given passage and answer the following questions.
A dry pellet of a common base B when kept in open absorbs moisture and turns sticky. The compound is also a by-product of chloro-alkali process.
Identify B:

Options

A. Sodium chloride
B. Sodium hydroxide
C. Carbon dioxide
D. Sodium carbonate

Explanation

To solve the question, we need to identify the common base referred to as "B" in the passage. Here’s a step-by-step solution:

### Step 1: Understand the Chloroalkali Process
The chloroalkali process involves the electrolysis of an aqueous solution of sodium chloride (NaCl). This process produces chlorine gas (Cl2), hydrogen gas (H2), and sodium hydroxide (NaOH).

### Step 2: Identify the Products
From the electrolysis of sodium chloride, we get:
- Sodium Hydroxide (NaOH) - a common base
- Chlorine gas (Cl2)
- Hydrogen gas (H2)

### Step 3: Analyze the Characteristics of Base B
The passage states that base B is a dry pellet that absorbs moisture and turns sticky. Sodium hydroxide (NaOH) is known to absorb moisture from the air, which makes it turn sticky when exposed to humidity.

### Step 4: Confirm the Identity of Base B
Since NaOH is produced in the chloroalkali process and matches the description of a common base that absorbs moisture and turns sticky, we can conclude that base B is sodium hydroxide.

### Step 5: Final Answer
Thus, the identified base B is **Sodium Hydroxide (NaOH)**.

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