CBSE Class 10 Science Foreign Question Paper 2013 (2)

CBSE Class 10 Science Foreign Question Paper 2013 (2). 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.

SCIENCE AND TECHNOLOGY (Theory)

Section-A

1. For a longer operational life, why should dry cells be used intermittently ? 

2. Where will the image be formed by a convex mirror if the object is placed between infinity and the pole of the mirror ? 

3. Write the chemical equation for the reaction of hot aluminium with steam. 

4. Dry ammonia gas has no action on litmus paper, but a solution of ammonia in water turns red litmus paper blue, Why is it so ? 

5. Why does a large increase in temperature slow down a reaction catalysed by an enzyme ? 

6. Describe a nuclear chain reaction with an example. 

7. A concave lens has a focal length of 20 cm. Calculate its power. 

8. Describe a method for finding out the exact north-south direction at a place using the direction of sunlight. 

9. What are the raw materials used in the manufacture of Portland Cement ? What is Reinforced Cement Concrete (RCC) ? 

10. State the composition of the three main layers of the earth, centre outwards. 

Please click the link below to download pdf file of CBSE Class 10 Science Foreign Question Paper 2013 (2)