I think you mean crabgrass. Crabgrass can be removed by herbicides that you can spray on but in some areas, spraying some herbicides are illegal. You can just pull them up out the ground and use a shovel for the stubborn ones.
Yes, the lime will quicken the decomposition process.
no
Lime can be applied to soil when pH levels are below 6.0 for most plants, but it is best to perform a soil test for accurate recommendations. Fall or early spring are good times to apply lime so that it has time to react with the soil before planting. Be cautious not to over-lime as it can harm plants.
mortar
yes it does :)
no
Lime
Mixing yellow and green together will produce a lime green color. Adjusting the ratios of yellow and green can help you achieve the desired shade of lime green.
Red and lime green mixed together will create a shade of brown or olive green, depending on the proportions of each color.
Slaked lime is used to make mortar. It is mixed with sand and water and used to hold bricks together.
3tons