CBSE Class 10 Science Question Paper SA1 2010 (6)

CBSE Class 10 Science Question Paper SA 1 2010 (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.

SECTION - A

1.      What does the direction of thumb indicate in the right-hand thumb rule.                     

2.      What steps would you suggest to minimise environmental pollution caused by burning of fossil fuels?

3.      Name a salt which does not contain water of crystallisation.                                

4.      Which part of the brain controls posture and balance of the body ?                          

5.   A dry pellet of a common base B, when kept in open absorbs moisture and turns sticky.The compound is also a by - product of chlor alkali process. Identify  B. What type ofreaction occurs when B is treated with  an acidic oxide ?

6.      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.

7.In one of the industrial processes used for manufacture of sodium hydroxide, a gas X is     formed as by product.   The gas X reacts with  dry slaked lime to give a compound Y which  is used as a bleaching agent in chemical industry.   Identify  X and Y

8.  A child has drawn  the electric circuit to study Ohm's law as shown in Figure.  his teacher told that the circuit diagram needs correction.  Study the circuit diagram andredraw it after making all corrections.

9.  A current of 5.0 A flows through a 12 Ω resistor. What is the rate at which heat energy is produced in the resistor.

Please click the link below to download pdf file of CBSE Class 10 Science Question Paper SA 1 2010 (6).