Look at the classification table below.
Which of the following options identifies X, Y and Z correctly?
| X | Y | Z | |
| A | Orchid | Steel ruler | Plastic spoon |
| B | Seed | Paper cup | Wooden chair |
| C | Flour | Dolphin | Stone |
| D | Lizard | Wooden chair | Gold earrings |
Match the column I with column II and select the correct option from the codes given below.
| Column I | Column II |
| (A) g at height h | (i)  |
| (B) g at depth h | (ii)  |
| (C) gpoles | (iii)  |
| (D) g | (iv) Maximum |
Observe the given reaction carefully and fill in the blanks by choosing an appropriate option.
Fe(s) + CuSO4(aq) → FeSO4(aq) + Cu(s)
Before reaction, iron is (i) in colour and solution is (ii) in colour. After reaction iron gets (iii) deposits and the solution becomes (iv) in colour.
| (i) | (ii) | (iii) | (iv) | |
| A | Grey | Colourless | Red | Blue |
| B | Red | Blue | Grey | Green |
| C | Grey | Blue | Brown | Green |
| D | Red | Colourless | Grey | Green |
