Which of the following statement correctly describes the studentās - ProProfs Discuss
Topics-
Products +
     

Which of the following statement correctly describes the studentā€™s observation? CaO- calcium Oxide reaction with water is regarded as exothermic. A student mixes these two products in a test tube and touches its side surface.



A. The test tube becomes cold due to release of heat energy
B. The test tube becomes hot due to release of heat energy
C. The test tube becomes hot due to absorption of heat energy
D. The test tube becomes cold due to absorption of heat energy

This question is part of Chemical Reactions and Equations
Asked by Jagran josh, Last updated: Feb 12, 2019

+ AnswerRequest Answer
...

2 Answers

N. Kingsley

N. KingsleyWriter, Columbus
Writer, Columbus

Answered on Aug 28, 2018

In a lab, the students or scientists must make observations from the experiments that they are conducting. When a student mixes chemicals in a lab, they may need to be aware of the results. Sometimes, explosions happen in laboratories because the chemicals that are mixed together should not be mixed together. In most cases, the scientist already knows this and will not mix the chemicals together.

Another result may be that the test tube becomes very hot or very cold based on the chemicals being mixed together. If a student mixed calcium oxide with water, it may make the test tube hot. The student may determine this simply by touching the test tube. If the mixture is hot, then the surface of the tube would be hot.

 Reply

jagran josh

Jagran josh

Answered on Dec 11, 2017

The test tube becomes hot due to release of heat energy
 Reply

Search for Google images
Select a recommended image
Upload from your computer
Search for Google images
Select a recommended image
Upload from your computer
Search for Google images
Select a recommended image
Upload from your computer

Email Sent
We have sent an email to your address "" with instructions to reset your password.