MODEL PAPER-1

HEAT ACIDS BASES & SALTS

             I. Answer the following questions:                                                 5 x 1 = 5m

            1. Define latent heat of fusion?

        

            2. Define latent heat of vaporizaion?

            3. What is pH scale? Who introduce it?

            4. Why Plaster of Paris is stored in moisture proof container?

            5. Give examples of olfactory indicators?

         II. Answer the following questions:                                                 4 x 2 = 8m

            6. Define neutralization? give two examples?

            7. Why do dogs pant during hot summer day?

            8. Define (i) Condensation  (ii) Dew?

            9. Why pickles are not stored in metal containers?

          

          III. Answer any three of the  following questions:                      3 x 4 = 12 m

            10. Distingiush between evaporation and boiling?

            11. Write the uses of bleacing powder, baking soda & washing soda?

            12. What is water of crystallization? Expalin with an activity?

            13. How do you find the specific heat of a solid experimentally?

  All The Best

Tags: heat, acids bases & salts, question paper, model paper, slip test, neutralization. questions,

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