Question
______ is not used to reclaim acid soils.
type="a" start="1"> CaCOÂ 3 CaCl2 Gypsum Ca(OH)2Solution
Gypsum is not considered as liming materials because on its application to an acid it dissociates into (Ca2+) and sulphate (SO42-) ions:                              CaSO4 ↔ Ca 2+ + SO42- The accompanying anion is sulphate and it reacts with soil moisture produces mineral acid (H2SO4) which also increases soil acidity instead of reducing soil acidity.
A can cultivate 3/5th of the land in 15 days and B can cultivate 1/4th of the land in 10 days. In how many days working together A...
Numan does half as much work as Gagan in four-fifth of the time. If together they take 16 days to complete a work, how much time shall Gagan take to do it?
Four bells start ringing together at 9:00 am. They ring at intervals of 15 seconds, 20 seconds, 30 seconds, and 40 seconds. At wh...
Three bells ring at interval of 36 seconds, 40 seconds and 48 seconds respectively. They start ringing together at a particular time. They will ring tog...
Girish can paint a picture in 4 days when he works for 8 hours per day. Due to illness, he could work for only 6 hours per day and was required to finis...
A can finish the work in 40 days and B in 30 days. They both work together for 5 days and then B leaves. How many days will A take to complete the remai...
A and B can complete a piece of work in 120 days, B and C can complete it in 150 days, and A and C can complete it in 200 days. In how many days can B ...
A, B and C can do a work in 8, 16 and 24 days respectively. They all begin together. A continues to work till it is finished, C leaving off 2 days and B...
If 10 men can complete a piece of work in 12 days by working 7 hours a day, then in how many days can 14 men do the same work by working 6 hours a day?
A contractor hires 12 workers to complete a project in 20 days. After 8 days, 4 more workers are employed, and the project is completed 2 days earlier. ...
Relevant for Exams:
