BECE..2013 SCIENCE Question 1 The S.I. unit for measuring the work done by a force is A. J B. K C. N D. W Question 2 The chemical formula of a compound describes the A. number of molecules in the compound B. type of bonding in the compound C. ratio in which the elements are combined D. state of the compound Question 3 Which of the following life processes is represented by the equation Glucose + oxygen -> carbon dioxide + water + energy A. Digestion B. Excretion C. Photosynthesis D. Respiration Question 4 Each layer of soil profile is known as A. horizon B. litter C. regolith D. solum Question 5 When the p-n junction of a transistor is reverse biased A. current flows from the p-type to the n-type B. no current flows from the p- type to the n- type C. conduction of current occurs D. current flows from the n-type to the p-type Question 6 When a solid-liquid mixture is filtered, the liquid that separates out into the container is called A. filtrate B. residue C. sediment D. solution Question 7 Which of the following processes involves the solid state of matter? A. Boiling B. Condensation C. Evaporation D. Melting Question 8 Which of the following farming systems is most effective in maintaining soil fertility? A. Crop rotation B. Land rotation C. Mixed cropping D. Monoculture Question 9 The disease in humans which is associated with insufficient intake of calcium is A. goiter B. kwashiorkor C. rickets D. scurvy Question 10 The arrow in the circuit symbol of either n- p-n or p-n-p transistor is always on the A. base lead B. collector lead C. emitter lead D. receiver lead Question 11 Which of the following insect pests of crops has piercing and sucking mouthparts? A. Aphids B. Grasshoppers C. Stemborers D. Termites Question 12 A reflex action involves the A. brain and muscles B. brain and nerves C. spinal cord and muscles D. spinal cord and nerves Question 13 The type of image formed in a plane mirror is always A. diminished B. enlarged C. real D. virtual Question 14 Which of the following statements about acids are correct? I. They turn red litmus paper blue II. They can be classified as either organic or mineral acids III. They can be neutralized by bases A. I and II only B. I and III only C. II and III only D. I, II and III Question 15 A transistor is said to operate in an active region when A. one p-n junction is forward biased and the other is reversed biased B. base-emitter junctions are reversed biased C. both p-n junctions are reversed biased D. base-collector junction is forward biased Question 16 Tuberculosis is spread A. through eating of contaminated food B. when an infected person coughs openly into the air C. through shaking of hands of infected persons D. through sharing of contaminated syringes Question 17 One function of engine oil in the engine of a tractor is to A. warm the engine B. enhance air intake C. ensure proper mixing of fuel D. lubricate the engine parts Question 18 Black pod is a disease of A. cocoa B. coffee C. guava D. mango Question 19 The efficiency of a machine is always less than 100% because part of the energy input is used to A. stop the machine after working B. perform useful work on the load C. overcome friction D. lift the machine up Question 20 Which of the following electronic components are used to produce oscillator circuits? I. Transistor II. Inductor III. Capacitor A. I and II only B. I and III only C. II and III only D. I, II and III Question 21 Which of the following sources of light is natural? A. Filament bulb B. Fluorescent tube C. Glow worm D. Fire cracker Question 22 Which of the following substances are carried by the blood? A. I. Hormones B. II. Urine C. III. Oxygen D. IV. Carbon dioxide Question 23 The practice of starting new organization in response to identified opportunities is termed A. agribusiness B. business enterprise C. entrepreneurship D. management Question 24 The sub-atomic particle with zero charge in the nucleus of an atom is called A. electron B. ion C. neutron D. proton Question 25 Which of the following management practices greatly helps in record keeping? A. Culling B. Debeaking C. Dehorning D. Identification Question 26 In the pin-hole camera, when the size of the pin-hole is increased, the image formed is A. blurred B. erect C. magnified D. virtual Question 27 Non-reactive metals are preferred in making ornaments and jewellery because they A. are attractive B. do not react with atmospheric oxygen C. do not retain their lustre D. are corrosive Question 28 Producers in an ecosystem are plants that A. attract insects B. feed on other plants C. manufacture their own food D. trap insects Question 29 The use of resistant varieties of crop in controlling diseases is described as A. biological control method B. chemical control method C. cultural control method D. physical control method
Posted on: Tue, 18 Jun 2013 06:49:01 +0000
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