SCIENTIFIC APTITUDE TEST
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1 121 SCIENTIFIC APTITUDE TEST Instructions: 1. Read the following questions carefully. Choose the correct answer and put a cross (X) mark in the appropriate answer box in the separate answer sheet provided. 2. Please answer each question carefully and quickly. 3. Please do not leave any question unanswered. 4. For questions no. 3, 11, 21, 22, 23, 25, 31 and 32, the numbers are arranged in a particular sequence. In each problem one number is missing. Study the numbers and understand the sequence in each case, and choose the most appropriate answer. 1. How many bones are there in the human body? (A) 260 (B) 206 (C) 209 (D) An example of an amphibian is. (A) fish (B) dog (C) frog (D) tiger 3. 2,4,5,7,8,? (A) 9 (B) 10 (C) 11 (D) The largest alternate source of energy is (A) solar energy (B) atomic energy (C) tidal energy (D) geothermal energy 5. To open a door, force should be applied at (A) the handle (B) the hinge (C) anywhere on the door (D) midway between the handle and the hinge 6. Which is the ultimate source of energy in the biosphere? (A) plants (B) fire (C) petroleum (D) sun 7. Example of an exclusive herbivore is (A) tiger (B) lion (C) deer (D) man 8. Which of the following statements about the ozone layer is correct? (A) it converts UV radiation into electrical energy (B) it protects the earth's life forms by preventing damaging UV rays from reaching the earth's surface (C) it is of uniform thickness
2 The chromosome number of a human being is (A) 43 (B) 46 (C) 44 (D) Motorists use the following type of mirror to iew the road behind them (A) concave (B) convex (C) either of the above (D) neither of the abo e , 80, 74, 68,?, 56 (A) 70 (B) 66 (C) 62 (D) It is often observed that people living in hilly areas suffer from goitre because (A) of low pressure (B) iodine is deficient in diet and drinking water (C) of low temperature (D) of non availability of sufficient amount of oxygen 13. If a person weighs 120 Kg on earth his weight on the moon will be (A) 10 Kg (B) 15 Kg (C) 20 Kg 14. A fuse is fitted with electric installation to (A) raise the voltage (B) lower the voltage (C) act as a safety device to break the electric circuit 15. The crew of a submarine uses which of the following to view the objects on the surface of the sea? (A) penscope (B) telescope (C) microscope 16. How many natural satellites does the earth have? (A) one (B) two (C) zero (D) numerous 17. Leukemia is a disease of the (A) skin (B) eyes (C) heart (D) blood cell 18. Which of the following blood groups is known as universal donor? (A) '0' (B) 'AB' - (C) 'A' (D) 'S' 19. Fresh egg placed in ordinary water (A) sinks (B) floats (C) breaks (D) mo es up and down 20. When a metal rod is heated, it will indicate (A) linear expansion (B) superficial e pan ion (C) cubical expansion (D) rise in temperatur 21. 3,6,8,11,13,?, 18 (A) 14 (B) 15 (C) 16 D) 17
3 ,3,5, 8,?,17,23 (A) 9 (B) 12 (C) 14 (D) , 96,?, 24, 12, 6 (A) 66 (B) 76 (C) 84 (D) A black hole is a body in space which does not allow any radiation to come out. This property is due to its (A) very small size (B) very large size (C) very high density (D) very low density 25. 3,6,18,21,63,?, 198 (A) 66 (B) 85 (C) 69 (D) Sound waves cannot travel in (A) solids (B) hydrogen (C) oil (D) vacuum 27. A myopic eye can be corrected by using a (A) convex lens (B) concave lens (C) plane mirror (D) cylindrical lens 28. AIDS virus destroys the body's (A) red blood corpuscles (B) liver (C) immune system (D) circulatory system 29. In household electrical circuits, three cored cables are used. The red wire is (A) the life wire (B) the neutral (C) the earth wire 30. Which of the following planets is popularly known as the morning star? (A) saturn (B) jupiter (C) mars (D) venus 31. 4,5,7,10,14,? (A) 16 (B) 18 (C) 19 (D) , 3, 5, 8,?, 17 (A) 10 (B) 12 (C) 13 (D) Which of the following materials is used in electro magnets? (A) stainless steel (B) cobalt (C) soft iron (D) copper 34. Which of the following statements about copper is not true? (A) it is purified electrolytically (B) it is used in alloys such as bronze and brass (C) it is malleable and ductile (D) it reacts readily with concentrated nitric acid forming hydrogen and copper nitrate
4 The most unusual characteristic of water is that in its solid form (A) its density is less than its density in liquid form (B) its density is more than its density in liquid form (C) its density is unchanged in its liquid form 36. Polythene bags are harmful to the environment because they (A) cannot be disposed of by burning (B) cannot be recycled (C) are water resistant (D) are not biodegradable 37. What will happen ifan egg is boiled for a long duration? (A) essential minerals and vitamins are lost (B) it becomes readily digestible (C) the proteins present in it become hard and coagulate (D) it will be easily absorbed by the body 38. Which of the following compounds has least heating value? (A) alcohol (B) biogas (C) wood (D) coal 39. A simple machine is used to do (A) less work (B) more work (C) work more conveniently (D) work less conveniently 40. A bucket containing water is rotated in a vertical circle with high speed. At the highest point, when the bucket is upside down the water will (A) spill out slowly (B) spill out at once (C) not spill out (D) be thrown out with great force 41. When we comb our hair on a hot dry evening, small sparks are visible producing crackling sound, this is due to (A) static electricity (B) chemical action (C) dry wind 42. The intensity of earthquakes is measured by (A) phonograph (B) crescograph (C) barograph (D) seismograph 43. Three dry cells of each 1.5 V are connected in parallel, the total voltage will be (A) 4.5 V (B) 1.5 V (C) 3.0 V (D) 3.5 V
5 Which of the following is a star? (A) sun (B) jupiter (C) venus (D) moon 45. When a bell rings in a vacuum we shall hear (A) usual sound (B) less sound (C) no sound (D) louder sound 46. In a race Number 1 runs at a slower pace than Number 2. Number 3 runs at a slower pace than Number 4. Number 2 runs slower than Number 3 and Number 1 runs faster than Number 5. Which athlete wins the race? (A) Number 1 (C) Number 4 (B) Number2 (D) Number 5
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