Which of the following statements is true?

Options

A. soda lime a mixture of sodium hydroxide and potassium hydroxide.
B. Methane can be prepared by wurtz reaction
C. In alkanes all carbon atoms are `sp^(3)` hybridised.
D. neo-pentane yields three different monochloro derivatives.

Explanation

To determine which of the statements is true, let's analyze each option step by step.

### Step 1: Analyze Statement A
**Statement A**: "Soda lime is a mixture of sodium hydroxide and potassium hydroxide."

- **Analysis**: Soda lime is actually a mixture of sodium hydroxide (NaOH) and calcium oxide (CaO), not potassium hydroxide (KOH). Therefore, this statement is **false**.

### Step 2: Analyze Statement B
**Statement B**: "Methane can be prepared by Wurtz reaction."

- **Analysis**: The Wurtz reaction involves the coupling of alkyl halides in the presence of sodium metal to form alkanes. However, it typically produces hydrocarbons with an even number of carbon atoms or a mixture of compounds when unsymmetrical alkyl halides are used. Methane (CH4) cannot be directly synthesized from the Wurtz reaction. Therefore, this statement is **false**.

### Step 3: Analyze Statement C
**Statement C**: "In alkanes, all carbon atoms are sp3 hybridized."

- **Analysis**: In alkanes, each carbon atom forms four single bonds (sigma bonds) with other carbon or hydrogen atoms. This bonding arrangement is characteristic of sp3 hybridization. Therefore, this statement is **true**.

### Step 4: Analyze Statement D
**Statement D**: "Neopentane yields three different molecular derivatives."

- **Analysis**: Neopentane (C5H12) has the structure (CH3)4C, which means all the hydrogen atoms are equivalent (1° hydrogens). When one hydrogen is replaced by chlorine to form monochloro derivatives, only one type of monochloro derivative can be formed because all the hydrogen atoms are the same. Therefore, this statement is **false**.

### Conclusion
After analyzing all the statements, we find that the only true statement is **Statement C**: "In alkanes, all carbon atoms are sp3 hybridized."