Permanent hardness of water may be removed by the addition of

1 Alum

2 Sodium carbonate

3 Lime

4 Potassium permanganate

Answer Posted / souvik

lime

Is This Answer Correct ?    16 Yes 6 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

Which scientists gave detailed information about nebula?

699


any one who has interviewed at noida for SBI clerk i have my interview call on 23.10.2008

1757


Who was the first cosmonaut?

609


When was the second and third experimental explosion conducted?

643


Name any two modern branches of Physical Science

679






Which was the international geo - physical year?

627


What is super nova?

673


How many astronauts travelled in the challenger?

606


What is light year?

651


Let arr be an array of 20 integers. Write a program that first fills the array with up to 20 input values and then finds and displays both the subscript of the largest item in arr and the value of the largest item. • Use an IDE to develop and save your work

1875


we know in mathematics that a matrix is an arrangement (array) of different elements , memebers . Then, how does the movie "Matrix" relate with this concept. In movie "Matrix" we have seen that it shown a war between machines & humans. And we know to operate machines we need code like 0 1 & 1 0 . How ? explain ?

1610


List out the General Objectives of teaching Physical science at Primary stages.

585


172.116.0.0 is a private address - for 120 subnets how many bits does one borrow from the HOST bits

1605


In which year was the meteorology department founded?

581


NO OF PLANT IN ONGC

1837