CBSE Class 10 Science Sample Paper 2013 (5)

CBSE Class 10 Science Sample Paper 2013 (5). Based on CBSE and NCERT guidelines. The students should practice these Question Papers to gain perfection which will help him to get more marks in CBSE examination. Please refer to more CBSE Class 10 question papers in other links. The CBSE Question papers are prepared based on trend in past examinations and expected questions in CBSE exams. Its always recommended by CBSE to practice the papers released by CBSE to get better exams in CBSE exams. CBSE Last Year Question Papers for class 10 for final/ term/ SA1/ SA2 Examinations conducted by Central Board ofSecondary Education for all CBSE affiliated schools in India and abroad. Please refer to more CBSE Class X sample papers, question papers, HOTs etc in other links.

Section-A

Q.1 List the three phenomenon of light responsible for formation of rainbow in the sky.

Q.2 Why is DNA copying an essential part of the process of reproduction?

Q.3 List any two common methods by which solid wastes of urban areas are disposed off.

Q.4 Why do we see stars twinkling whereas, where as planets do not twinkle?

Q.5 (i) What is meant by 'power of accommodation of the eye‘?

      (ii) How does the focal length of the eye lens change when we shift looking from a distant object to a nearby object?

Q.6 (i)Why are Coal and petroleum called fossil fuels?

      (ii) Name the two elements which are present both in CNG and Petroleum?

Q.7 (i) What is the position of hydrogen in the model periodic table?

      (ii) Where are isotopes of the same element having different atomic masses placed in the periodic table?

Q.8 Pure- breed pea plants A are crossed with pure breed pea plants B. It is found that the plants who look like A do not appear in F1 generation but B re-emerge in F2 generation. Which of the plants A and B:

      (i) tall,

      (ii) dwarf ? Give reason for your answer.

Q.9 A student sitting in the last row of the classroom is not able to read clearly the writing on the Blackboard:

       (a) Name the type of defect of vision he is suffering from

       (b) How can this defect be corrected ?

Q.10 (a) Name the compounds CH3COOH and identify its functional group.

        (b) Give a chemical test to identify this compound.

        (c) Name the gas evolved when this compound acts on solid carbonate. How would you identify this gas.

Q.11(a) Explain the terms (i)Implantation (ii)Placenta

       (b) What is the average duration of human pregnancy?

       (c) What happens when the egg is not fertilized?

Q.12(a) A spherical mirror A forms an erect image of an object, a spherical mirror B forms erect as well as inverted image of an object. Name the types of the spherical mirror A and B.

       (b) What is the relation between the focal length and radius of curvature of a spherical mirror? If the radius of a curvature of a spherical Mirror is 25 cm, what is the focal length?

Q.13 An organic compound 'A‘ is an essential constituent of wine and beer. Oxidation of 'A‘ yields An organic acid 'B‘ which is present in vinegar. Name the compounds 'A‘ and 'B‘ and write their structural formula. What happens when 'A‘ and 'B‘ react in the presence of an acid Catalyst? Write the chemical equation for the reaction.

Q.14 which of the following are homologous and which are the analogous? Give reasons

        1. Trunk of the elephant and hand of a chimpanzee

        2. Wing of a bird and wing of a bat.

        3. Scales of fishes and shell of molluscs.

Please refer to attached file for CBSE Class 10 Science Sample Paper 2013 (5)

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