Correct Answer: 3, 5, 1, 4, 2

Solution : Given:
1. Electrolysis 2. Electrotyping 3. Electrician 4. Electroplating 5. Electrification

Step 1: Compare the first letter of each word. Since all the words start with the same letter E , then move on to the next letter.
Step 2: The second, third, fourth, fifth, and sixth letters of each word are the same, i.e., l , e , c , t , and r , then move on to the next letter.
Step 3: The seventh letter of each word is either i or o . Based on the alphabetical order of these letters, we can arrange them – Electr i cian, Electr i fication, Electr o lysis, Electr o typing, Electr o plating.
Step 3: Compare the eighth letter of (Electri c ian, Electri f ication), and (Electro l ysis, Electro t yping, Electro p lating). Electrician will come before Electrification as c comes before f in alphabetical order. Similarly, Electrolysis will come before Electrotyping and Electroplating as l comes before t and p in alphabetical order. Also, Electroplating will come before Electrotyping as p comes before t in alphabetical order.

So, the sequence is Electrician, Electrification, Electrolysis, Electroplating, Electrotyping, or 3, 5, 1, 4, 2. Hence, the third option is correct.