[{"id":192018,"question":"The speed of sound in dry air at 20 c is about","choices":[{"text":"130 meters per second","value":"A"},{"text":"230 meters per second","value":"B"},{"text":"330 meters per second","value":"C"},{"text":"None of these","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":192017,"question":"When sound is reflected from floor,ceiling or a wall,it mixes with the original sound and change its complexion,it is called as","choices":[{"text":"Sound","value":"A"},{"text":"Echo","value":"B"},{"text":"Reverberation","value":"C"},{"text":"Noise","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":192016,"question":"The magnet always points in the same direction,if move freely i.e towards north and south poles because of:","choices":[{"text":"Gravitational field","value":"A"},{"text":"A lot of metals deposits on north and south poles","value":"B"},{"text":"Due to attraction of north pole and repulsion of Western pole","value":"C"},{"text":"Earth is a huge magnet","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":192015,"question":"The unit of home electricity energy consumption is:","choices":[{"text":"Watt hour","value":"A"},{"text":"Kilowatt hour","value":"B"},{"text":"Joule hour","value":"C"},{"text":"None of these","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":192014,"question":"An electric current can produce","choices":[{"text":"Chemical effect","value":"A"},{"text":"Magnetic effect","value":"B"},{"text":"Heating effect","value":"C"},{"text":"All of these","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":192013,"question":"The most abundant elements in sea water are","choices":[{"text":"Sodium and potassium","value":"A"},{"text":"Sodium and calcium","value":"B"},{"text":"Sodium and Chlorine","value":"C"},{"text":"Chlorine and iodine","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":192012,"question":"The most abundant natural iron oxides are","choices":[{"text":"Magnetite and Pyrite","value":"A"},{"text":"Magnetite and Bauxite","value":"B"},{"text":"Hematite and pyrite","value":"C"},{"text":"Hematite and Magnetite","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":192011,"question":"Which ricks are formed by the alteration of pre-existing rocks by great heat or pressure?","choices":[{"text":"Igneous rocks","value":"A"},{"text":"Sedimentary rocks","value":"B"},{"text":"Metamorphic rocks","value":"C"},{"text":"Acid rocks","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":192010,"question":"The ozone layer protects the earth from rays sent by the sun:","choices":[{"text":"Ultraviolet rays","value":"A"},{"text":"Infrared rays","value":"B"},{"text":"Gamma rays","value":"C"},{"text":"None of these","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":192009,"question":"An eclipse of the sun occurs when","choices":[{"text":"The moon is between the sun and the earth","value":"A"},{"text":"The sun is between the earth and the moon","value":"B"},{"text":"The earth is between the sun and the moon","value":"C"},{"text":"None of these","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":192008,"question":"A unit of length equal to the average distance between the earth and sun is called","choices":[{"text":"Light year","value":"A"},{"text":"Astronomical unit","value":"B"},{"text":"Parsec","value":"C"},{"text":"None of these","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":192007,"question":"The age of the solar system is","choices":[{"text":"4.5 billion year","value":"A"},{"text":"5,5 billion years","value":"B"},{"text":"6.5 billion years","value":"C"},{"text":"7.5 billion year","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":192006,"question":"Sun is a:","choices":[{"text":"Planet","value":"A"},{"text":"Comet","value":"B"},{"text":"Satellite","value":"C"},{"text":"Aurora","value":"D"},{"text":"None of these","value":"E"}],"correctAnswer":5},{"id":192005,"question":"The planet of the solar system which has maximum numbers of moon is:","choices":[{"text":"Jupiter","value":"A"},{"text":"Venus","value":"B"},{"text":"Saturn","value":"C"},{"text":"Uranus","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":192004,"question":"Which of the follwing are founded in the nucleus?","choices":[{"text":"Lysosomes","value":"A"},{"text":"Chromosomes","value":"B"},{"text":"Ribosomes","value":"C"},{"text":"None of these","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":192003,"question":"Schizophrenia is associated with an excess of receptor for:","choices":[{"text":"Nor epinephrine","value":"A"},{"text":"Dopamine","value":"B"},{"text":"Serotonin","value":"C"},{"text":"Acetylcholine","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":192002,"question":"Protein are made up of","choices":[{"text":"Polynucleotide","value":"A"},{"text":"Polypeptide","value":"B"},{"text":"Oxyacetylene","value":"C"},{"text":"None of these","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":192001,"question":"The higest source of omege 3 fatty acid is","choices":[{"text":"Fish oil","value":"A"},{"text":"Corn oil","value":"B"},{"text":"Sun flower oli","value":"C"},{"text":"None of these","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":192000,"question":"Which of the following gas is essential for human?","choices":[{"text":"Carbon dioxide","value":"A"},{"text":"Nitrogen","value":"B"},{"text":"Oxygen","value":"C"},{"text":"None of these","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":191999,"question":"Which of these does not contain a structural protein?","choices":[{"text":"Muscles","value":"A"},{"text":"Tendons","value":"B"},{"text":"Ovalbumin","value":"C"},{"text":"Spider silk","value":"D"},{"value":"E"}],"correctAnswer":3}]