Which of the following is correct?

Options

A. On reduction, any aldehyde gives secondary alcohol
B. Reaction of vegetable oil with `H_(2)SO_(4)` gives glycerine
C. Ethyl alcohol and iodine with NaOH gives iodoform
D. Sucrose on reaction with NaCl gives inverted sugar

Answer

To determine which of the provided options is correct, we will analyze each statement one by one.

### Step-by-Step Solution:

1. **Option A: On reduction, any aldehyde gives a secondary alcohol.**
- An aldehyde has the structure RCHO (where R is a hydrocarbon group). Upon reduction, aldehydes are converted to primary alcohols (RCH2OH), not secondary alcohols. Therefore, this statement is incorrect.

2. **Option B: Reaction of vegetable oil with H2O4 gives glycerin.**
- Vegetable oils are primarily triglycerides, and they do not react with H2O4 (sulfuric acid) to produce glycerin. Instead, glycerin (glycerol) is typically produced through the hydrolysis of triglycerides. Thus, this statement is also incorrect.

3. **Option C: Ethyl alcohol and iodine with NaOH gives hydroform.**
- Ethyl alcohol (C2H5OH) reacts with iodine (I2) in the presence of sodium hydroxide (NaOH) to produce iodoform (CHI3). This reaction is known as the iodoform reaction, and it is indeed correct. Therefore, this statement is correct.

4. **Option D: Sucrose on reaction with NaCl gives inverted sugar.**
- Inverted sugar is a mixture of glucose and fructose obtained by hydrolyzing sucrose. The reaction of sucrose with NaCl does not produce inverted sugar. Therefore, this statement is incorrect.

### Conclusion:
Based on the analysis, the correct option is **Option C**: Ethyl alcohol and iodine with NaOH gives hydroform.