CBSE Class 10 Science Question Paper 2006 (1)

CBSE Science Question Paper for Class 10 CBSE exams for CBSE Students. Based on CBSE and CCE 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 of past examinations. 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 of Secondary Education for all CBSE affiliated schools in India and abroad.

SCIENCE AND TECHNOLOGY (Theory)

Outside Compartment — 2006

General Instructions:

1. The question paper comprises two Sections, A and B. You are to attempt both the Sections.

2. The candidates are advised to attempt all the questions of Section A separately and Section B separately.

3. All questions are compulsory.

4. There is no overall choice. However, internal choice has been provided in some questions. You are to attempt only one option in such questions.

5. Marks allocated to every question are indicated against it.

6. Question numbers 1—4 in Section A and 17— 18 in Section B are very short answer questions and are of 1 mark each. These are to be answered in one word or one sentence each.

7. Question numbers 5—8 in Section A and 19— 20 in Section B are short answer questions and are of 2 marks each. These are to be answered in 30—40 words each.

8. Question numbers 9—14 in Section A and 21—23 in Section B are also short answer questions and are of 3 marks each. These are to be answered in 40—50 words each.

9. Question numbers 15—16 in Section A and 24 in Section B are long answer questions and are of 5 marks each. These are to be answered in 70 words each.

SECTION A

Q. 1. List any two factors which affect the rate of a chemical reaction. 

Q. 2. Name the primary colours of light. 

Q. 3. Out of the two, a toaster of 1kW and an electric heater of 2 kW, which has a greater resistance?

Q. 4. Why is alumina dissolved in molten cryolite during its electrolytic reduction? 

Q. 5. A calcium compound which is a yellowish white powder is used as a disinfectant and also in textile industry. Name the compound. Which gas is released when this compound is left exposed to air?

Q. 6. Draw a labelled ray diagram to locate the image of an object formed by a convex lens of focal length 20 cm when the object is placed 30 cm away from the lens.

Q. 7. Choose the metal (from the list given below) which can displace zinc from zinc sulphate solution—Lead, Copper, Magnesium, Silver. Write the equation of the chemical reaction involved. 

Q. 8. Why is a satellite lifted to a height of about 200 km from the ground before giving it a horizontal push? What is the minimum velocity required to launch an artificial satellite in an orbit around the earth?

Q. 9. In the circuit shown below calculate:

    a. total resistance in the arm CE,

    b. total current drawn from the battery, and

    c. current in each arm, i.e., AB and CE of the circuit. 

Q. 10.

    a. Explain giving one example each the difference between average rate of reaction and instantaneous rate of reaction.

     b. Which solution has higher pH value, 1MHCl or 1M NaOH ?

Please refer to attached file for CBSE Class 10 Science Question Paper 2006 (1)