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CBSE Class 10 Board Exam 2024 : Science

9 pages, 39 questions, 0 questions with responses, 0 total responses,

Swayam Ahuja
Baring School, Batala, Gurdaspur

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Sub. Code: 086 Please check that this question paper contains 39 Questions and has 09 Printed pages. Roll No. ____________ D.A.V. INSTITUTIONS, CHHATTISGARH PRACTICE PAPER CLASS: X SUBJECT: SCIENCE (086) Time Allowed: 3 Hours Maximum Marks: 80 General Instructions: (i) This question paper consists of 39 questions in 5 sections. (ii) All questions are compulsory. However, an internal choice is provided in some questions. A student is expected to attempt only one of these questions. (iii) Section A consists of 20 objective type questions carrying 1 mark each. (iv) Section B consists of 6 Very Short questions carrying 02 marks each. Answers to these questions should be in the range of 30 to 50 words. (v) Section C consists of 7 Short Answer type questions carrying 03 marks each. Answers to these questions should be in the range of 50 to 80 words. (vi) Section D consists of 3 Long Answer type questions carrying 05 marks each. Answer to these questions should be in the range of 80 to 120 words. (vii) Section E consists of 3 source-based/case-based units of assessment of 04 marks each with subparts. Section: A (1 20 =20) Select and write the most appropriate option out of the four options given for each of the questions 1 - 20. There is no negative mark for incorrect response. SECTION-A Select and write one most appropriate option out of the four options given for each of the questions 1-20. There is no negative mark for incorrect response. 1. Blue colour of copper sulphate changes to pale green upon addition of Iron nails. Which type of reaction is this? (a) Displacement reaction (b) Double displacement reaction (c) Precipitation reaction (d) Both (b) and (c) 1

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