The chemical composition of quick lime is ____________

Which lime is referred to as burned lime or quick lime

A

CaO

B

Ca(OH)₂

C

CaMg(CO₃)₂

D

CaCO₃

Assertion A : Lime based mortars give higher ratio of brickwork strength to mortar strength as compared to non-lime mortar.Reason R : Lime based mortars have lower bond strength as compared to non-lime mortars.Select your answer according to the codes given below:

A

Both A and R is true and R is the correct explanation of A

B

Both A and R is true but R is not the correct explanation of A

C

A is true but R is false

D

A is false but R is true

Assertion A : Lime based mortars give higher ratio of brickwork strength to mortar strength as compared to non-lime mortar.
Reason R : Lime based mortars have lower bond strength as compared to non-lime mortars.
Select your answer according to the codes given below:

A

Both A and R is true and R is the correct explanation of A

B

Both A and R is true but R is not the correct explanation of A

C

A is true but R is false

D

A is false but R is true

Study the following statements.
(i) Hydraulic lime is suitable for white washing,
(ii) Fat lime is suitable for whitewashing,
(iii) Hydraulic lime is suitable for making mortar,
(iv) Fat lime is suitable for making mortar.

A

(i) and (iv)

B

(ii) and (iii)

C

(i) and (ii)

D

(iii) and (iv)

This compound is conventionally used for the whitewashing of buildings. Which of the following statements is/are true about it. 1. It is obtained by treating quick lime with water. 2. It is produced when calcium carbide reacts with water. 3. It is one of the raw materials used for the manufacture of Portland cement. 4. It is called slaked lime and its chemical formula is Ca(OH)2. Select the correct answer using the code given below:

A

1 and 4 only

B

2, 3 and 4 only

C

1, 2 and 4 only

D

1, 2 and 3 only

The quick ratio is 1.5 : 1 and the quick assets is Rs. 30,000. The quick liability will be

A

Rs. 20,000

B

Rs. 50,000

C

Rs. 45,000

D

Rs. 30,000

Which of the following methods yields quick, small supplies of Quick Lime?

A

Intermittent kiln

B

Continuous kiln

C

Clamp burning

D

Kankar burning

Quick lime (or caustic lime)

A

Is obtained by the calcination of pure lime stone

B

Has great affinity to moisture

C

Is amorphous

D

All the above

Quick lime reacts with water to give slaked lime and heat. What type of reaction is this?

A

Combination

B

Double displacement

C

Redox

D

Displacement

Which of the following is incorrect about the formation of slaked lime from quick lime?

A

The process absorbs energy

B

The slaked lime forms dissolves in water

C

The process is an example of Combination reaction

D

The slaked lime further mixes with the Carbon di Oxide in air to give white finish

The chemical composition of quick lime is ____________

Related Questions