| 51 | All forms of energy that we use are ultimately transformed into | Heat energy |
| 52 | Friction can be reduced by changing over from | Sliding to rolling |
| 53 | Consider the following statements: If there was no capillarity 1. It would be impossible to use a kerosene lamp. 2. One would not be able to use a straw to consume a soft drink. 3. The blotting paper would fail to function. 4. There would have been no plants on earth. Of the statements | 1.3 and 4 are correct |
| 54 | Which one of the following would give the highest energy per gram? | Fats |
| 55 | Which one of the following units represents the largest amount of energy? | Calorie |
| 56 | Why are soft drinks made with chilled water rather than water at room temperature? | Chilled water attracts more carbon dioxide |
| 57 | In which country alcohol is used as fuel for vehicles? | Brazil |
| 58 | The volume percentage of nitrogen in air is | 0.78 |
| 59 | Wisdom teeth normally grow between the age of | 17-35 |
| 60 | The meter installed in our homes measure electricity in | KWh |
| 61 | A man is standing on a weighing machine in a lift which is moving. The weighing machine will show MINIMUM reading when, the lift is moving | In a free fall due to failure of the lift mechanism |
| 62 | What does blood consist of? | 60% plasma, 40% corpuscles |
| 63 | Where does the oxygen that keeps us alive come from? | Carbon dioxide |
| 64 | According to the definition of 1 KWh, a 100 watt bulb consumes one unit of electricity in | 10 hours |
| 65 | Amino acids are a product of the digestion of | Proteins |
| 66 | Detergents dissolved in water help in cleaning clothes by | Reducing the surface tension of water |
| 67 | The second most abundant metal found in the earth's crust is | Iron |
| 68 | For being able to see three- dimensional pictures we have to use | An epidiascope |
| 69 | Which gas is used in the preparation of soft drinks? | Carbon dioxide |
| 70 | Trachoma is a disease of the | Eye |
| 71 | Air contains volume of carbon dioxide approximately; | 0.0003 |
| 72 | A slow-running pendulum clock can be speeded up by | Reducing the length of the rod |
| 73 | The beautiful colour pattern exhibited by a peacock in its tail feathers are due to | Selective absorption of light |
| 74 | A mobile phone sends and receives messages through | Radio waves |
| 75 | Steering of a car involves | A pair of forces acting along the same line and in opposite direction |
| 76 | Recently, a group of scientists successfully cloned eight calves from the cells of a single cow. The experiment took place in | Britain |
| 77 | The cracking sound heard when dry hair is combed with a hard rubber comb is due to | None of the above |
| 78 | Which type of Uranium is used in the fission process? | Uranium-235 |
| 79 | Lead ball falls through water more slowly than through air because | Of the viscous force in water |
| 80 | The speed of sound is | 343 meter per second |
| 81 | What does a Syphygmannometer measure? | Blood Pressure |
| 82 | A man can survive without food for at least | 21 days |
| 83 | Deficiency of chloride cause the impaired growth in | Infants |
| 84 | Water is a highly effective coolant for a car engine because | Water is good conductor of heat |
| 85 | The shortest bone in the human body is | Stapes |
| 86 | Ptyalin is an enzyme produced in the | Salivary glands |
| 87 | For water purification, we use | Chlorine |
| 88 | Which one of the following raw material is used in the manufacture of foam used in mattresses, cushions, etc.? | Phenol |
| 89 | What does make the blood look red? | Plasma |
| 90 | The sun appears red at sunrise and sunset while it appears white at noon, because | Of scattering of light due to dust particles and air molecules |
| 91 | Approximately, how many times each day do our heart valves open and close normally? | 1,00,000 |
| 92 | Washing soda in water behaves like | Acidic |
| 93 | A train goes past a railway station at a high speed. A young boy standing on the edge of the platform is likely to | Fall towards the train |
| 94 | The range of a 100 meter high T.V. transmitter are is about | 30 km |
| 95 | Which one of the following is a metal | Iron |
| 96 | The ray with high penetrating power is | γ -rays |
| 97 | The gland which maintains body temperature is the | Thyroid gland |
| 98 | As the amount of clay in a soil increases, its water retaining capacity | Increases |
| 99 | Silica is used in | Glass making |
| 100 | Acid rain contains high levels of | Sulphuric and nitric acids |