| 31 | Materials for rain-proof coats and tents owe their water proof properties to | Surface tension |
| 32 | Haemoglobin in the blood is a complex protein rich in | Iron |
| 33 | An astronaut inside a spacecraft is in a state of weightlessness. This implies that | The astronaut is outside the influence of the earth's gravitational force |
| 34 | In BTU system, one BTU is equal to | 1055 Joule |
| 35 | The second most abundant metal found in the earth's crust is | Iron |
| 36 | The amount of energy required by the children of age between one to three years is | 600 K Calories |
| 37 | Recently, a group of scientists successfully cloned eight calves from the cells of a single cow. The experiment took place in | Britain |
| 38 | In eye donation, which one of the following parts of donor's eye is utilized? | Cornea |
| 39 | Three dimensional image formed by laser is called | Hologram |
| 40 | Atmospheric pressure exerted on the earth is due to the | Gravitational pull |