Q. The main chemical substance present in the bone and teeth of animal is
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Q. The segment of a myofibril that is called a sarcomere runs from
Q. Which of the following is used for removing air bubbles from glass during its manufacture?
Q. When does a saturated hydrocarbon gives a sooty flame on burning?
Q. The weight of a rusted iron object is _________ that of an unrusted one
Q. The enzyme that hydrolyses cane sugar to glucose and fructose is
Q. Many marine animals use _______________ dissolved in sea-water to make their shells.
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