CBSE Class 10 Science Sample Paper 2013 Set G

1] Name one Metal and one Non-Metal which exists in liquid state at room temperature?

2] How is brain protected from shocks and injuries?

3] Name the instrument used for measuring:

   (i) Potential difference (ii) Current

4] Define double displacement reaction with the help of an example.

5] HCl and HNO₃ show acidic characters in aqueous solution while alcohol and glucose solutions do not. Give reasons.

6] What happens to glucose that enters the nephron along with the filtrate?

7] How many electrons will flow through a wire when the charge of 4C flows for 2 sec? Also find the current.

8] A wire is cut into three equal parts and then connected in parallel with the same source. How will its: (a) Resistance (b) resistivity gets affected? (c) How would the total current and the current through the parts change?

9] How does the strength of the Magnetic field at the centre of a circular coil of a wire depend on

    (a) Radius of the coil (b) number of turns of wire in the coil?

    (c) Draw the magnetic lines of force in case of a circular coil of a wire.

10] How are water and minerals absorbed by the plant?

11] What are the disadvantages of using fossil fuels? Give two instances where solar cells are exclusively used as source of energy.

12] (a) What are ionic compounds? Ionic compounds conduct electricity only in molten state not in solid state. Why? 

      (b). Why do ionic compounds have high melting points?

13] What are exothermic and endothermic reaction. Explain with the help of one example each.

14] The pH of the mouth of a person is lower than 5.5. What changes will occur in his mouth? How these changes can be controlled? Write any two measures.

15] Mention any three important functions of fore brain.

16] Give the events that occur during photosynthesis.

17] Name the hormones secreted by Thyroid, Pancreas and Adrenal glands. Write a function of each hormone

18] Tendril encircles or coils around the object in contact with it. Elaborate.

19] A sanitary worker uses a white chemical having strong smell of chlorine gas to disinfect the water tank.

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