DRDO CEPTAM TECH A Sample Paper on General Science for Technician Post
| 1 | Potassium Permanganate is used for purifying drinking water, because
(a) it is a sterilising agent (b) it dissolves the impurities of water (c) it is a reducing agent (d) it is an oxidising agent |
| 2 | Which of the following is the lightest metal?
(a) Mercury (b) Lithium (c) Lead (d) Silver |
| 3 | Which among the following minerals is also known as Horn Silver?
(a) Silver Iodide (b) Silver Chroride (c) Zinc Phosphate (d) Silver Sulphide |
| 4 | The minimum temperature at which a combustible substance catches fire is called
(a) ignition temperature (b) static temperature (c) optimum temperature (d) fireless temperature |
| 5 | An n-type and p-type semiconductor can obtained by doping pure silicon with
(a) Boron and Phosphorus (b) Indium and Sodiuka (c) Sodium and Magnesium (d) Phosphorus and Boron |
| 6 | Automobile exhaust leads to a poisonous pollutant
(a) Carbon Dioxide (b) Sulphur Dioxide (c) Carbon Monoxide (d) Nitrous Oxide |
| 7 | Which among the following will be a negative ion?
(a) If it has more electrons than protons (b) If it has more electrons than neutrons (c) If it has more protons than electrons (d) If it has more protons than neutrons |
| 8 | A __________ thread is actually stronger than a steel wire.
(a) Wool (b) Cotton (c) Jute (d) Nylon |
| 9 | What is the SI unit of heat energy?
(a) Joule (b) Newton (c) Calorie (d) Kelvin |
| 10 | Instrument for measuring rainfall is called –
(a) Lucimeter (b) Galactometer (c) Hyetometer (d) Hygrometer |
| 11 | Which one of the following is used in the manufacture of soaps?
(a) Vegetable oil (b) Mobil oil (c) Kerosene oil (d) Cutting oil |
| 12 | What is the order of magnitude of electric resistance of the human body (dry)?
(a) 102 ohm (b) 104 ohm (c) 106 ohm (d) 108 ohm |
| 13 | Cellulose is the chief constituent of –
(a) Cell wall (b) Cell membrane (c) Secondary wall of xylem (d) Body wall of insects |
| 14 | Which one of the following materials is not present in gun power ?
(a) Sulphur (b) Charcoal (c) Potassium nitrate (d) It is consumed during photosynthesis. |
| 15 | An element is determined by the number of
(a) Atoms (b) Electrons (c) Neutrons (d) Protons |
Answer –
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 |
| d | b | b | a | d | c | a | d | a | c | a | b | a | d | d |
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