Related Questions

Which one of the following statements is not true/false?
1. An acid that is completely ionized with ions produces large amounts of H+ ions. for example HCl, H2SO4, HNO3
2. A weak acid that is partially ionized in water produces small amounts of H+ ions. for example - CH3COOH, H2CO3, H2SO3
Zeolite removes both temporary as well as permanent hardness of water by precipitating calcium and magnesium present in water as insoluble zeolites. Used zeolite is regenerated by flushing with the solution of
Large, medium and small ships are used to bring water. 4 large ships carry as much water as 7 small ships, 3 medium ships carry the same amount of water as 2 large ships and 1 small ship. 15 large, 7 medium and 14 small ships, each made 36 journeys and brought a certain quantity of water. In how many journeys would 12 large, 14 medium and 21 small ships bring the same quantity ?
Which of the following statement(s) is/are CORRECT? I. Acids are sour in taste and generate H+ ions. II. Acids are sour in taste and generate OH– ions. III. Bases are bitter intaste and generate OH– ions.
In zeolite process, the dissolved ________ is not removed.
The fragments formed during sputtering can be either neutral atoms or ions. The ions can only be positive.
The area ________ the breakthrough curve is equal to the maximum amount of ions removed by the column.
The following question is based on the given data for an examination. A. Candidates appeared 10500 B. Passed in all the five subjects 5685 C. Passed in three subjects only 1498 D. Passed in two subjects only 1250 E. Passed in one subject only 835 F. Failed in English only 78 G. Failed in Maths only 275 H. Failed in Physics only 149 I. Failed in Chemistry only 147 J. Failed in Biology only 221 How many candidates passed in at least four subjects ?
The hardness of 1000 litres of a water sample was removed by passing it through a zeolite softener which required 30litres of NaCl solution containing 1.5 gm/L NaCl for regeneration. The hardness of the water sample will be ___________
Which of these methods returns the string such that some characters which are specified to be removed from the end of strings are removed from string by mentioning the number of characters to be removed?