Assertion A : Pure lime takes a long time to develop adequate strength.Reason R : Pure lime has slow hardening characteristics.Select your answer according to the coding system given below:

Building Materials
Assertion A : Pure lime takes a long time to develop adequate strength.Reason R : Pure lime has slow hardening characteristics.Select your answer according to the coding system given below:

Both A and R is true and R is not a correct explanation of A

A is true but R is false

A is false but R is true

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

Both A and R is true and R is not a correct explanation of A

A is true but R is false

A is false but R is true

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

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Building Materials
Proper amount of entrained air in concrete results in
(i) Better workability
(ii) Better resistance to freezing and thawing
(iii) Lesser workability
(iv) Less resistance to freezing and thawing

(iii) and (iv)

(i) and (ii)

(ii) and (iii)

(i) and (iv)

(iii) and (iv)

(i) and (ii)

(ii) and (iii)

(i) and (iv)

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Building Materials
Acrylic sheets

Possess 10 to 17 times greater breakage resistance than that of glass of equivalent thickness

Are generally unaffected by most household detergents

All of these

Possess the light transmission rate of 93%

Possess 10 to 17 times greater breakage resistance than that of glass of equivalent thickness

Are generally unaffected by most household detergents

All of these

Possess the light transmission rate of 93%

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Building Materials
The main constituent of cement which is responsible for initial setting of cement is

tricalcium silicate

dicalcium silicate

All of these

tricalcium aluminate

tricalcium silicate

dicalcium silicate

All of these

tricalcium aluminate

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Building Materials
The most commonly used retarder in cement is

Calcium chloride

Gypsum

Calcium carbonate

None of these

Calcium chloride

Gypsum

Calcium carbonate

None of these

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Building Materials
The slump recommended for mass concrete is about

125 mm to 150 mm

25 mm to 50 mm

50 mm to 100 mm

100 mm to 125 mm

125 mm to 150 mm

25 mm to 50 mm

50 mm to 100 mm

100 mm to 125 mm

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Building Materials

Building Materials Assertion A : Pure lime takes a long time to develop adequate strength.Reason R : Pure lime has slow hardening characteristics.Select your answer according to the coding system given below:

Building Materials Proper amount of entrained air in concrete results in(i) Better workability(ii) Better resistance to freezing and thawing(iii) Lesser workability(iv) Less resistance to freezing and thawing

Building Materials Acrylic sheets

Building Materials The main constituent of cement which is responsible for initial setting of cement is

Building Materials The most commonly used retarder in cement is

Building Materials The slump recommended for mass concrete is about

Building Materials
Assertion A : Pure lime takes a long time to develop adequate strength.Reason R : Pure lime has slow hardening characteristics.Select your answer according to the coding system given below:

Building Materials
Proper amount of entrained air in concrete results in
(i) Better workability
(ii) Better resistance to freezing and thawing
(iii) Lesser workability
(iv) Less resistance to freezing and thawing

Building Materials
Acrylic sheets

Building Materials
The main constituent of cement which is responsible for initial setting of cement is

Building Materials
The most commonly used retarder in cement is

Building Materials
The slump recommended for mass concrete is about