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EXERCISES, А., Fill in the blanks., is a rock-like material containing large quantities of cr, -metallicmineral., 1. re, 2. Petroleum is a Mon-, bauxite, 3. The ore from which aluminum is obtained is known as, sigbai, 5. Natural Gas is found in fombay High, in Assam., 4. Petroleum and mineral oil is found in, В., Write (T) for true and (F) for false., 1. The process of extracting minerals from deep under the soil is called, 2. Aluminium is used for making aeroplanes. T, 3. Coal is also called 'black diamond'. T, 4. Petroleum is also called 'black gold'. F, 88, 5. There is an oil refinery in Mathura. T, С., Match the following:, 1. black diamond b, a. petroleum, 2. brassd, b. сoal, 3. liquid gold a, c. glass industry, 4. bronze, e, d. combination of copper and zinc, e., combination of copper and tin, 5. manganese C