Civil Engineering - Building Materials - Discussion


Formula for quick lime, is

[A]. CaCO3
[B]. CaO
[C]. CO3CO2
[D]. none to these.

Answer: Option B


No answer description available for this question.

Anu said: (Jul 4, 2013)  
Calcium oxide (CaO), commonly known as quicklime or burnt lime, is a widely used chemical compound. It is a white, caustic, alkaline crystalline solid at room temperature. The broadly used term "lime" connotes calcium-containing inorganic materials, which include carbonates, oxides and hydroxides of calcium, silicon, magnesium, aluminium, and iron predominate, such as limestone. By contrast, "quicklime" specifically applies to a single chemical compound.

Tuhin Subhra Basak said: (Oct 2, 2015)  
The formula of quick lime is CaO,

CaCO3 is the formula of lime stone.

Jayesh said: (Jan 29, 2016)  
CaO: Quicklime,

CaCo3: Limestone,

Ca(OH)2: Slaked lime.

Raza Haque said: (Jan 5, 2017)  
CaO is the right answer.

Preeti said: (Jan 13, 2017)  
Correct answer is CaO. Please correct it.

Ravi said: (Jan 31, 2017)  
NaoH is called caustic soda.
KoH is called caustic pottash.
NaoH and KoH are called soda lime.
Ca(oH)2 is called slake lime.
CaCo3 is called limestone (which on dilution with water gives milkiness).
Conc. NaCl solution is called brine.
Cao is called QUICK LIME.

Dilip Sahu said: (Feb 4, 2017)  
Yes, correct @Ravi.

Sejal said: (Aug 7, 2017)  
Cao is the right answer.

Satyam Shukla said: (Aug 8, 2017)  
Cao- Calcium Oxide. Is the right answer.
And also known as Quick lime.

Neeraj Singh said: (Dec 7, 2017)  
Cao is the right answer.

Sudhakar Gupta said: (Dec 19, 2017)  
Correct ans: cao.

Anilpokhriyal said: (Feb 21, 2018)  
CAO is correct answer.

Gaurav Gupta said: (May 31, 2018)  
Caco3 is the right answer. I agree.

Knu said: (Jul 2, 2018)  
Calcium oxide (CaO), is known as quick lime. That is why correct ans is option D?

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