Consider the following statements and select the correct option which correctly identifies true (T) and false (F).
(i) Iron loses its magnetism easily.
(ii) Steel is a hard magnetic material.
(iii) Iron is used to make permanent magnet.
(iv) Steel is used to make electromagnet.
| (i) | (ii) | (iii) | (iv) | |
| A | F | F | T | T |
| B | T | T | F | F |
| C | T | F | T | F |
| D | F | T | F | T |
Select the option which correctly fills the boxes X and Y of the given flow chart.
| X | Y | |
| A | Balsam | Wheat |
| B | Mustard | Onion |
| C | Turnip | Hibiscus |
| D | Grass | Rice |
Study the given flow chart and select the option which correctly identifies P, Q, R and S.
| P | Q | R | S | |
| A | Sulphur dioxide | Water vapour | UV rays | Oxygen |
| B | Oxides of nitrogen | Oxygen | UV rays | Nitrogen |
| C | Sulphur dioxide | Carbon dioxide | CFCs | Ozone |
| D | Oxides of nitrogen | Methane | UV rays | Helium |
Nitika, a class 8 student performed a few experiments
to study the reactivity of metals. She summarised her
observations in the given table.
Identify W, X, Y and Z.
| W | X | Y | Z | |
| A | Sodium | Iron | Copper | Lead |
| B | Aluminium | Iron | Gold | Potassium |
| C | Calcium | Magnesium | Aluminium | Copper |
| D | Magnesium | Calcium | Zinc | Silver |
