Refer to the given Venn diagram and select the option that correctly identifies X, Y and Z.
| X | Y | Z | |
|---|---|---|---|
| A | Hyena | Dog | Swan |
| B | Whale | Guppy | Parrot |
| C | Vulture | Whale | Butterfly |
| D | Tiger | Dolphin | Snake |
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 quite cheap.
Which of the following options is correctly identifies true (T) or false (F)?
| (i) | (ii) | (iii) | (iv) | |
|---|---|---|---|---|
| A | F | F | T | T |
| B | T | T | F | T |
| C | F | T | F | T |
| D | T | T | F | F |
