Match the entires of Column I with appropiate entires of column II and choose the correct option out of the four option (a) ,(b) ,(c ) (d) given at the end of each question
`{:(,"column I" ,, "column" II),((A) ,"Device in which chemical energy is converted into electrocal energy" , (p),"Electrolysis"),((B), "Device which keeps electrical neutrality in two half reactions in an electrochemical cell" , (q), "Redox titration"),((C ) ,"A process in which electric energy is used to bring about decompostion of an electrolye" , (r),"Eelctrochemical cell"),((D),"Process which involves reactions between oxidising and reducing agents to estimate the amount of unknown substence in solution" , (s),"Salt bridge"):}`

Options

A. A-r,B-s,C-p,D-q
B. A-r,B-s,c-q,D-p
C. A-s,B-p,C-r,D-q
D. A-p,B-r,c-s,D-q

Answer

To solve the matching question, we need to carefully analyze the entries in both Column I and Column II. Let's break down the entries step by step.

### Step-by-Step Solution:

1. **Identify the first entry in Column I:**
- (A) "Device in which chemical energy is converted into electrical energy"
- This describes an **electrochemical cell**. Thus, we can match (A) with (r).

2. **Identify the second entry in Column I:**
- (B) "Device which keeps electrical neutrality in two half reactions in an electrochemical cell"
- This describes a **salt bridge**, which maintains the balance of charge in an electrochemical cell. Thus, we can match (B) with (s).

3. **Identify the third entry in Column I:**
- (C) "A process in which electric energy is used to bring about decomposition of an electrolyte"
- This describes **electrolysis**, where electrical energy is used to decompose substances. Thus, we can match (C) with (p).

4. **Identify the fourth entry in Column I:**
- (D) "Process which involves reactions between oxidising and reducing agents to estimate the amount of unknown substance in solution"
- This describes a **redox titration**, which involves the reaction of oxidizing and reducing agents. Thus, we can match (D) with (q).

### Summary of Matches:
- (A) → (r) Electrochemical cell
- (B) → (s) Salt bridge
- (C) → (p) Electrolysis
- (D) → (q) Redox titration

### Final Answer:
The correct matches are:
- A → r
- B → s
- C → p
- D → q

Now, let's choose the correct option based on the matches we have made.