QUIZ ON HEAT AND ACIDS BASES AND SALTS

HEAT

1. The SI unit of specific heat is_____________ 

2. _____________ flows from a body at higher temperature to a body at lower temperature. 

3. _____________ is a cooling process. 

4. An object ‘A’ at 100C and another object ‘B’ at 10K are kept in contact, then heat will flow from      _________ to ___________ 

5. The latent heat of fusion of ice is _____________ 

6. Temperature of a body is directly proportional to _____________ 

7. According to the principle of method of mixtures, the net heat lost by the hot bodies is equal to     _____________ by the cold bodies. 

8. The sultryness in summer days is due to _____________ 

9. 1 calorie = ______ joules.  

10. Ice floats on water because _____________ 

11. Heat is a form of ____________ 

12. Heat energy transferred from the _______ body to the ______ body.  

13. The S.I. unit of heat is ____________  

14. C.G.S. unit of heat is ________ 

15. ____________ is used as a coolant. 

16. Temperature measured on Kelvin scale is called __________ temperature.  

17. 1cal/g-oC = _________ J/kg – k.  

18. The water droplets condensed on window panes surfaces are known as ___________ 

19. ____________ is a warming process.  

20. Evaporation is a _________ phenomenon. 

ACIDS  BASES  AND SALTS

1. --------------- taste is a characteristic property of all acids in aqueous solution.

2. Acids react with some metals to produce --------------- gas.

3. Because of aqueous acid solutions conduct electricity, they are identified as ---------------

4. Acids react with bases to produce a --------------- and water.

5. Acids turn methyl orange into --------------- colour.

6. Bases tend to taste --------------- and feel ---------------

7. Like acids, aqueous basic solutions conduct ---------------, and are identified as -------------

8. Bases react with --------------- to produce a salt and ---------------

9. Bases turn phenolphthalein into --------------- colour.

10. In neutral solution litmus colour is ---------------

11. Substances whose odour changes in acidic or basic media are called ---------------

12. Acid + Base → Salt + ---------------

13. Chemical formula for lime water is ---------------

14. Metal oxides are --------------- in nature.

15. The process of dissolving an acid or a base in water is an --------------- process.

16. Mixing an acid or a base with water is called ---------------

17. --------------- is a mixture of several indicators

18. A scale for measuring Hydrogen ion concentration in a solution is called

19. The pH of neutral solution is ---------------

20. --------------- introduced the concept of pH.