Environmental Science and Engineering
2024 · Paper 1
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Complete GATE ES 2024 Paper 1 overview, original pages and practice · Timed previous-paper practice
Questions 64–65 of 65. Imported answers require review unless explicitly marked reviewed.
Question 64
Open questionESNAT2 marksNeeds review
In a region, total annual consumption of gasoline is 30.6 million tons. The land required for growing sugarcane to produce enough bioethanol to replace the gasoline completely is ______ km
(an integer value). Ethanol energy equivalent is 67% of gasoline, gasoline density is 850 kg/m
, yield of bioethanol produced from sugarcane per hectare of land is 3750 L, and 1 km
= 100 hectares.Log in to check the answer
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Open questionESNAT2 marksNeeds review
Initially a bottle contained 400 g of ethanol. Half of ethanol was used by a student for preparing the stock solution in an environmental chemistry laboratory just before summer vacation of 90 days. After completing the procedure, the student left the bottle uncorked. If the unsealed bottle loses ethanol at a rate of 0.5 g/day, the ethanol that will be left in the bottle at the end of the summer vacation is ______ g (an integer value).
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