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CBSE Class X Sample Question Paper : SCIENCE (Sample Paper 3)

11 pages, 65 questions, 0 questions with responses, 0 total responses,

CBSE 10
Kendriya Vidyalaya (KV), Kamla Nehru Nagar, Ghaziabad

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SAMPLE PAPER III X - SCIENCE (THEORY) Time : 2 Hours Max. Marks : 60 General Instructions 1. The question paper comprises of two sections A and B. You have to attempt both the sections. 2. All questions are compulsory. 3. There is no overall choice. However, internal choice has been provided in all the three questions of five marks category. Only one option in such questions is to be attempted. 4. All questions of section A and all questions of section B to be attempted separately. 5. Questions 1 to 6 in section A and 19 to 21 in section B are very short answer type questions and carry one mark each. 6. Questions 7 to 12 in section A and 22 to 24 in section B are short answer type questions and carry two marks each. 7. Questions 13 to 16 in section A and 25 and 26 in section B are also short answer type questions and carry three marks each. 8. Questions 17 and 18 in section A and question 27 in section B are long answer type questions and carry five marks each. SECTION A 1. Dry Hydrogen Chloride gas does not turn blue litmus red whereas Hydrochloric acid does. Give one reason. 2. Identify the substance oxidized in the chemical reaction: MnO2 + 4 HCl Mn Cl2 + Cl2 + 2H2O 3. You are given two resistors of 5? and 20 ?, a battery of emf 2.5V, a key and an ammeter. Draw a circuit diagram of all given components such that the ammeter gives a reading of 0.1A. 4. Sketch magnetic field lines around a current carry straight conductor. 5. The electrical resistivity of few materials is given below in ohm-meter. Which one of these materials has the highest electrical conductivity? A B C D E F 6.84 X 10-8 1.60 X 10-8 1.00 X 10-4 2.50 X 1012 4.40 X 10-5 2.30 X 1017 328

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