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
How many naval staffs can occupy arihant?
What is voltage? ?? What type of of show voltage. ?? Practillay how's voltage?
Which of the following metals is a better conductor of electricity? A. Silver B. Copper
meron po bang minerals ang astoroids po ba?
What are comets?
What are cosmic rays?
What is length and weight of arihant?
Which is the regulatory authority of atomic energy in india?
Where did the largest reflector telescope situated?
Explain any four values that can be developed through teaching Physical Science
What is the capacity of arihant’s atomic reactor?
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 ?
is the big bang theory correct, because as I wondered the explosion is too powerful that no one could survive after galaxies were created no life exist on it after the 3.5 billion years life exist so... my question is were is the life came from?
Please can someone tell me, how many times during a 12 hour period, do the hands of a clock face opposite each other? I believe its 11. Also, would this be the same, no matter WHAT the starting time? i.e. if the 12 hour period started at 6 o clock, would it still be 11 times? Many thanks for your help.
Which was the international geo - physical year?