Change in Temperature
Change in Temperature
There are several reactions which occur with change in temperature.
1.When quicklime (calcium oxide) is treated with water in a beaker, a large quantity of heat is produced. As a result, the beaker becomes very hot. Such reactions in which heat is produced are called exothermic reactions.
Activity :
Take a little of quicklime in a hard-glass beaker. Add water to it slowly. Touch the beaker. The beaker feels to be quite hot.
The chemical reaction between quicklime and water to form slaked lime is characterized by a change in temperature.
Which of the following are correct : (a) The reaction of quicklime and water is an exothermic reaction. (b) The reaction of ammonium chloride and barium hydroxide is an endothermic reaction. | |||
| Right Option : C | |||
| View Explanation | |||
Complete the given chemical equation :
| |||
| Right Option : B | |||
| View Explanation | |||
Which of the following are correct : (a) The reactions in which heat is produced are called exothermic reactions. (b) The reaction of quicklime and water is an exothermic reaction. (c) In a reaction, heat is absorbed. Such a reaction is called an endothermic reaction. | |||
| Right Option : D | |||
| View Explanation | |||
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10thAbhyas institute is one of the best coaching institute in the vicinity of Ambala Cantt area. The teachers of the institute are well experienced and very helpful in solving the problems of the students.The good thing of the institute is that it is providing extra classes for the students who are w...
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