CBSE Class 10 Science Question Paper SA 1 2011 Set 06

CBSE Class 10 Science Question Paper SA 1 2011 (6). Students can download the last year question papers using the link below. Free download of examination question papers with solutions. Last 10 year question papers should be practised to get better marks in examinations.

SUMMATIVE ASSESSMENT - I (2011)

SCIENCE  Class – X

SECTION-A

1. Give an example of a metal which is the best conductor of heat.

2. Name the agent which decomposes animal dung into biogas.

3. Name the physical quantity whose unit is volt/ampere.

4. All ores are minerals but all mineral are not ores”. Justify the statement with examples.

5. A white powder is added while baking breads and cakes to make them soft and fluffy. What is the name of the powder ? What are the main ingredients in it ? What are the functions of each ingredient ?

6. A light sensitive compound „X‟ of silver is used in black and white photography. On exposure to sunlight its colour changes to gray : (a) Identify „X‟ (b) Write a chemical equation to express the above change (c) Identify the type of chemical reaction.

7. A white compound on heating decomposes to give brown fumes and a yellow residue is left behind. Name the compound. Write the chemical equation of the reaction stating its type. 

8. Name the material transported by the following :- (i) Xylem (ii) pulmonary artery (iii) pulmonary Vein (iv) phloem

9. Mention the main use of the slurry left behind in the bio-gas of plant. State the characteristics of the slurry on which this use is based.

10. Define 1 kWh. How is this unit of energy related to 1 joule ? 

Please click the link below to download pdf file of CBSE Class 10 Science Question Paper SA 1 2011 (6)