The bumpers and door handles of motor cars, taps etc. are coated with silvery layer of chromium because
(i) It does not easily get corroded.
(ii) It forms a hard layer which does not easily get scratched.
(iii) It tarnishes quickly.
(iv) It is quiet expensive.
Which of the following options is correctly identifies true (T) or false (F)?

Options

A. `{:("(i)","(ii)","(iii)","(iv)"),(F,F,T,T):}`
B. `{:("(i)","(ii)","(iii)","(iv)"),(T,T,F,F):}`
C. `{:("(i)","(ii)","(iii)","(iv)"),(F,T,F,T):}`
D. `{:("(i)","(ii)","(iii)","(iv)"),(T,T,F,T):}`

Answer

To determine which statements about the use of chromium for coating bumpers and door handles of motor cars, taps, etc., are true or false, we will analyze each option one by one.

### Step-by-Step Solution:

1. **Statement (i): It does not easily get corroded.**
- **Analysis:** Chromium is known for its resistance to corrosion. This property makes it ideal for coating objects that are exposed to moisture and air, as it helps prevent rust and deterioration.
- **Conclusion:** True (T)

2. **Statement (ii): It forms a hard layer which does not easily get scratched.**
- **Analysis:** Chromium plating creates a hard surface that is resistant to scratches and wear. This is another reason why it is used for coating items that are frequently handled or exposed to wear.
- **Conclusion:** True (T)

3. **Statement (iii): It tarnishes quickly.**
- **Analysis:** Chromium does not tarnish easily. In fact, one of its benefits is that it maintains its shiny appearance over time without significant tarnishing.
- **Conclusion:** False (F)

4. **Statement (iv): It is quite expensive.**
- **Analysis:** Chromium is indeed more expensive than many other metals, which is why it is often used as a coating rather than as a base material.
- **Conclusion:** True (T)

### Final Summary of Statements:
- (i) True (T)
- (ii) True (T)
- (iii) False (F)
- (iv) True (T)