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ISC Class XII Board Specimen 2023 : Biotechnology

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ISC 12th
Indian School Certificate Examination (ISC), New Delhi
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BIOTECHNOLOGY PAPER 1 (THEORY) ----------------------------------------------------------------------------------------------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. The intended marks for questions or parts of questions are given in brackets [ ]. ---------------------------------------------------------------------------------------------------------------- SECTION A 14 MARKS Question 1 (i) ___________ is used in dairy industry to make cheese. [1] (ii) _____________ are extra chromosomal, circular, self-replicating molecules. [1] (iii) In gel electrophoresis, the gel is composed of _____________. [1] (iv) (a) Nitrocellulose (b) Agarose (c) Phospholipids (d) Sodium nitride When a monochromatic beam passes through a homogenous solution, its intensity decreases as the thickness of solution increases. Which one of the following laws states this? (a) Beer s Law (b) Lambert s Law (c) Hooke s Law (d) Beer Lambert Law [1] --------------------------------------------------------------------------------------------------------------ISC SPECIMEN QUESTION PAPER 2023 1

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