Geology and Geophysics
2022 · Paper 1
Take it one question at a time. Try an answer, then check your understanding.
Complete GATE GG-1 2022 Paper 1 overview, original pages and practice · Timed previous-paper practice
Questions 61–63 of 65. Imported answers require review unless explicitly marked reviewed.
Question 61
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A sample of 10 g coal yields 1 g of moisture, 2 g of ash and 5.6 g of volatile matter. The percentage of volatile matter content of the coal on dry ash-free basis is _______. [round off to 1 decimal place]
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A soil sample shows an average beta count of 6.8 counts per minute (cpm) per gram of organic carbon. The ¹⁴C count rate from organic carbon of present day vegetation is 15.26 cpm/g. The age of the sample is _______ years. [round off to 1 decimal place] (Half-life of ¹⁴C = 5370 years)
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A digital camera with a focal length of 150 mm is flown at a height of 3000 m over a flat terrain for taking aerial photographs. The scale of the aerial photograph is 1: _______. [in integer]
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