4818class X paper

Sample Paper – 2009

Class – X

Subject – Science

 

GENERAL INSTRUCTIONS:

 

1. The question paper comprises two section A and B. you are two attempt both the sections.
2. All questions are compulsory.
3. There is no over all choices However, internal choices has been provided in three questions of five marks in section A and B. you have to attempt one option only in these questions.
4. Marks allotted to each question are indicated against it.
5. Question 1 to 6 in section A and 17 to 19 in section B is very short answer questions.
6. Question 7 to 10 in section A and 20 to 24 in section B are short answer questions.
7. Question 11 to 14 in section A and 25, 26 in section B are also short answer questions.
8. Question 15, 16 in section A and 27 in section B are long answer questions.

 

                                                                      SECTION – A

 

 

1. Identify the Oxidizing and Reducing agent in the given chemical reaction

SO2   +   2H2S                    3S   +    2H2O                                                        (1)

2. What is Alkenes and Alkynes?                                                                                    (1)
3. Write the Newlands Law of Octave                                                                                    (1)
4. Write the Refractive Index of Air and Crown Glass                                                        (1)
5. 1 Kwh = _________ Joule.                                                                                                  (1)
6. Give the direction of field, current and force in Flemings Left hand Rule              (1)
7. Write the Electron Dot Structure for Magnesium and Oxygen atoms. How does this form a chemical bond?                                                                                                  (2)
8. What is Unsaturated Carbon compound? Give formula of Butene and Butyne.(2)
9. Figure shows V-I graphs for Parallel and Series combinations of two metallic resistors. Identify it and justify your answer.                                                                      (2)

 

 

 

 

 

 

             

 

10. A 2.0 Cm tall object is placed perpendicular to the principle axis of a Convex Lens of Focal

Length 10 Cm. The Distance of the object from the lens is 20 Cm. find the nature, position and size of the Image. Also find its Magnification.                                          (2)

11. Give reasons for the following                                                                                    (3)
1. The Traffic light Signals are of Red and Green Colures
2. The Colures of Clear Sky and Deep Water is Blue
3. The Sun near the Horizon appears flattened at sunrise and sunset? And Star seems Twinkle.

12.  Draw a Human Eye and label it. And what is Power of Accomodation              (3)

13.  Give Reaction of the following                                                                                    (3)

              (I)          NAHCO3             Heat                ?

              (II)        CH3COOH     +       C2H5OH              ??                    ??

              (III)        H2SO4      +     Al                               ??

14. Write the Achievements and Limitations of Madellevs Periodic table                   (3)
15.  

(I)  Write the Chemical Properties of Carbon Compound with example              (3)

(II) What is Reactivity Series? And write the Refining process of Metals              (2)

                                                        OR

(I)  Write the different position of Elements in the modern Periodic Table              (2)

(II) Contrast the arrangement of elements in Madellev’s Periodic Table and Modern Periodic Table.                                                                                                                (2)

(III) Why Cook adds a very little amount of Baking Soda in making of Bhajiya (1)

              16.  Explain Electric Motor                                                                                                  (5)

                                                                      OR

           Explain Electric Generator                                                                                    (5)

 

 

 

17.  What do you mean by Evolution?                                                                                    (1)

18.  Write the types of Hormones found in animal                                                        (1)

19.   Why do we need to manage our Resources                                                                      (1)

20.  What is Geothermal and Nuclear Energy?                                                                      (2)

21.  How the Human Sex will be Determined?                                                                      (2)

22.  What is budding? In amoeba which type of Reproduction process takes places(2)

23.  Write down the path ways of Break down of Glucose                                          (2)

24.  Write the stages of Evolution                                                                                    (2)

25.  Draw Male and Female Reproductive System with Label                                          (3)

26.  How the Food, Water and Other Substances transported in plant?                            (3)

27.  What is Nutrition? Write its type. And how can we get nutrition from the food explain the process                                                                                                                (5)

                                                        OR

    (I)   What is Food Chain and Web?                                                                                    (2)

    (II)  Explain Excretion in Human Beings                                                                      (3)

 

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