Ministry of Defense Assistant Director Past Paper Dated: 2004 41- The number of ribs in the human body is: A. 12B. 18C. 24D. 36 View Answer Answer : C. 24 Description 42- Optical fibre works on the principle of: A. Total internal reflectionB. ReflectionC. ScatteringD. None of these View Answer Answer : A. Total internal reflection Description 43- Which plant is used in the treatment of blood pressure? A. GarlicB. SerpentineC. DhaturaD. Cinchona View Answer Answer : B. Serpentine Description 44- Sparkling red colour after the blast of firecrackers is due to the presence of: A. SulphurB. SodiumC. StrontiumD. Magnesium View Answer Answer : C. Strontium Description 45- Birth control pills contain synthetic: A. MineralsB. VitaminsC. SugarsD. Hormones View Answer Answer : D. Hormones Description 46- Which of the following is not a symptom of heart attack? A. Nausea and sweatingB. Squeezy feeling in chestC. Numbness and aching of armsD. Pains in legs View Answer Answer : D. Pains in legs Description 47- Which is the largest island? A. SumatraB. Baffin IslandC. BorneoD. Greenland View Answer Answer : D. Greenland Description 48- "Contours" are lines connecting places having: A. Equal rainfallB. Equal heightC. Equal pressureD. Equal temperature View Answer Answer : B. Equal height Description 49- Kerosene oil is an example of: A. Mineral oilB. Vegetable oilC. Essential oilD. Natural oil View Answer Answer : A. Mineral oil Description 50- Which of the following best describes the use of a Hygrometer? A. To determine pressure of oil deposits under waterB. To measure the humidity in airC. To measure atmospheric pressureD. None of these View Answer Answer : B. To measure the humidity in air Description 51- Hyetology is the study of: A. High pressureB. RainfallC. High temperatureD. Earthquake View Answer Answer : B. Rainfall Description 52- The inexhaustible natural resource of the earth is: A. Wind and tidal powerB. CoalC. ForestD. Fossil fuels View Answer Answer : A. Wind and tidal power Description 53- What is the currency of China? A. YuanB. EuroC. DalasiD. Lempira View Answer Answer : A. Yuan Description 54- Meteorology is: A. Science of the atmosphereB. Scientific study of weights and measuresC. The study of tissue growthD. Study of stars View Answer Answer : A. Science of the atmosphere Description 55- Which of the following is the fastest-growing tree? A. TeakB. SalC. EucalyptusD. Banyan View Answer Answer : C. Eucalyptus Description 56- Among the following industries, which one is least tied down to sources of raw material? A. TextilesB. SugarC. PaperD. Electronics View Answer Answer : D. Electronics Description 57- Which of the following is not likely to be a barrier separating biogeographic regions? A. Large oceanB. Large glacierC. Large lakeD. Large river View Answer Answer : D. Large river Description 58- The tree species most commonly used in social forestry is: A. EucalyptusB. PeepalC. GulmoharD. Mango View Answer Answer : A. Eucalyptus Description 59- What name is given to the study of interrelationship between various organisms and their relationship with the physical environment? A. EcologyB. EcosystemC. BiologyD. Ecological balance View Answer Answer : A. Ecology Description 60- Which of the following is a cold-blooded animal? A. PenguinB. TortoiseC. WhaleD. Otter View Answer Answer : B. Tortoise Description 1 2 3 4 5