CBSE Class 10 Science Question Paper SA 1 2011 Set 16

CBSE Class 10 Science Question Paper SA 1 2011 (16). 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. An element ‘X’ on reaction with dilute acid evolves a gas that burns with a pop sound, while a compound ‘Y’ on reaction with dilute acid evolves a gas that turns lime water milky. Identify X and Y. 

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

3. Why is CNG considered an environmental friendly fuel ? CNG

4. Name the physical quantity which is same in all the resistors when they are connected in series.

5. When a metal X is treated with cold water, it gives a basic salt Y with molecular formula XOH (Molecular mass = 40) and liberates a gas Z which easily catches fire. Identify X, Y, Z.

6. It is advised to pour acid into water rather than water to acid for the dilution of acids. Why ?

7. Write the balanced equation for the following reaction and identify the type of reaction in each case.

    (i) Potassium bromide + Barium Iodide -> Potassium iodide + Barium bromide.

    (ii) Hydrogen (g) + Chlorine(g) -> Hydrogen Chloride (g) 

8. What are the final products of carbohydrates, proteins and fats after their digestion.

9. A student constructed a model of box type solar cooker. Instead of using glass sheet he used a transparent plastic sheet to cover the open face of the box. He found that this cooker does not function well. What could be the possible drawbacks in his model ? Explain the advantage of painting black the inner and outer surfaces of the cooker and that of cooking vessels.

Please click the link below to download pdf file of CBSE Class 10 Science Question Paper SA 1 2011 (16)