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Class 10 CBSE Pre Board 2015 : Science (Delhi Private School, Sharjah)

7 pages, 77 questions, 28 questions with responses, 33 total responses,

Rahul Shibu
Delhi Private School, Sharjah

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SUMMATIVE ASSESSMENT II (2014-15) SA2SETISCI1014QP SUBJECT: SCIENCE SET I Grade: 10 Name: 05/03/15 Max. Marks:90 Time:3 hrs Roll No: Section: General Instructions: i) The question paper comprises two sections, A & B .You are to attempt both the sections i) All sections are compulsory. iii) There is no overall choice, however internal choice has been provided for the questions of five marks category. Only one option in such question is to be attempted. iv) All questions of section A and section B to be attempted separately. v) Question no.1-3 in section A are of 1mark questions and have to be answered in one word or one sentence. vi) Question 4-7 in section A are of 2marks and these are to be answered in 30 words each. vii) Questions 8-19 are of 3 marks each and have to be answered in 50 words. viii) Questions 20-24 of section A are of 5marks and have to be answered in 70 words each. ix) Questions 25-42 of section B are multiple choice questions based on practical skills.You have to choose one appropriate answer out of four given. Each question carries 1 mark. 1 2 3 4 5 6 7 SECTION A Out of the three elements P, Q and R having atomic numbers 11, 17 and 19 respectively 1 which two elements will show similar properties and why? For what position of an object, a concave mirror forms an enlarged virtual image? 1 Why are traits acquired during the lifetime of an individual not inherited? 1 Write the name and the structural formula of the simplest alkyne. 2 Distinguish between biodegradable & non-biodegradable substances. 2 John obtained a magnification of 1 with concave mirror of focal length 10 cm. What is the 2 object distance from mirror? Study the following table in which positions of six elements A, B, C, D, E and F are shown as they2are in the modern periodic table : Group 1 2 3-12 13 14 15 16 17 18 Period 2 A B Page 1 of 7 C

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