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ISC Class XII Board Specimen 2024 : Environmental Science

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ISC 12th
Indian School Certificate Examination (ISC), New Delhi
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ENVIRONMENTAL SCIENCE ---------------------------------------------------------------------------------------------------------------- Maximum Marks: 70 Time Allowed: Three Hours (Candidates are allowed additional 15 minutes for only reading the paper. They must NOT start writing during this time.) --------------------------------------------------------------------------------------------------Answer all questions in Section A, Section B and Section C. Section A consists of objective / very short answer questions. Section B consists of short answer questions. Section C consists of long answer questions. The intended marks for questions or parts of questions are given in brackets [ ]. ---------------------------------------------------------------------------------------------------------------- SECTION A - 14 MARKS Question 1 (i) (ii) Crude oil has been discovered in Rampur district of Uttar Pradesh in addition to the existing oilfields in Assam, Gujarat and Maharashtra. Which category of resources would these oil fields fall under? (a) Actual resources (b) Potential resources (c) Ubiquitous resources (d) Localised resources Assertion: Discharge of domestic sewage directly into rivers increases the BOD level. [1] [1] Reason: Domestic sewage is rich in biodegradable organic matter. Which one of the following is correct? (a) Both Assertion and Reason are true, and Reason is the correct explanation for Assertion. (b) Both Assertion and Reason are true, but Reason is not the correct explanation for Assertion. ---------------------------------------------------------------------------------------------------------------ISC SPECIMEN QUESTION PAPER 2024 1

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