CBSE Class 10 Science Sample Paper 2013 Set H

1] Name the hormone that controls the rate of respiration. Also name the part of the brain responsible for controlling respiration.

2] Why is it advised not to use copper or brass vessels to store pickles or curd?

3] Which is having more resistance: A 100 W bulb or a 60 W bulb?

4] Write the balance chemical equation for the chemical reaction between Manganese dioxide and Aluminium powder. What happens if Manganese powder is heated with Aluminium oxide?

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

6] Write any two causes that may damage the kidney of a person.

7] Explain the significance of peristaltic movement that occurs all along the gut during digestion.

8] You are given two solar cookers, one with a plane mirror as reflector and the other with concave mirror as reflector. Which one is more efficient? Give reason for your answer. State one more use of concave mirror.

9]State the law that relates current through a conductor and the potential difference between its ends. Represent the law mathematically. Represent graphically, the variation of current I as a function of potential difference V. 

Please refer to attached file for CBSE Class 10 Science Sample Paper 2013 Set H