Question

Which of the following gives red colour in Victor Meyer’s test?

• A. n-propyl alcohol
• B. isopropyl alcohol
• C. tert-butyl alcohol
• D. sec-butyl alcohol

Hint:

Victor Meyer test: Primary \(\rightarrow\) red, Secondary \(\rightarrow\) blue, Tertiary \(\rightarrow\) no colour.

Answer 1

The Correct Option is A

Step 1: Recall Victor Meyer test.
Victor Meyer test distinguishes between primary, secondary and tertiary alcohols.
Step 2: Colour obtained.
- Primary alcohol gives red colour.
- Secondary alcohol gives blue colour.
- Tertiary alcohol gives no colour.
Step 3: Identify type of given alcohols.
- n-propyl alcohol \((CH_3CH_2CH_2OH)\) is primary.
- isopropyl alcohol is secondary.
- tert-butyl alcohol is tertiary.
- sec-butyl alcohol is secondary.
Step 4: Therefore red colour is given by primary alcohol.
So correct is n-propyl alcohol.
Final Answer: \[ \boxed{\text{n-propyl alcohol}} \]