Purchase mobileappIcon Download our Mobile App
Call Us at 011-40705070  or  
Click to Call
Select your Board & Class
  • Select Board
  • Select Class

Become Expert
Become a Science expert
Start Now with Video Lessons, Sample Papers, Revision Notes & more for Class-X - CBSE 

BEST ANSWER Certified by MeritNation Expert  
  1. The temperature of the reaction mixture rises when aluminium is added because it is an exothermic reaction.
  2. Reaction of sodium metal is found to be highly explosive because it is an exothermic reaction
  3. When lead is treated with hydrochloric acid, bubbles of hydrogen gas are evolved 

    Pb + 2HCl → PbCl2 + H2

Hope it helpzz!!!

Posted by Sweet Teddy(student)on 4/8/12

This conversation is already closed by Expert

More Answers



bcoz Na reacts highly with HCL to form NaCl and H2 gas


Pb reacts with HCL to form PbCl3 and the bubbles are the H2 gas.

Posted by Priya Singh(student)on 4/8/12

Ask a QuestionHave a doubt? Ask our expert and get quick answers.
Show me more questions