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

Consider the following statements:
(i) Masonry in rich cement mortar though having good strength with high shrinkage is much liable for surface cracks.
(ii) Lime mortar possesses poor workability and poor water retentivity and also suffers high shrinkage.
(iii) Masonry in lime mortar has better resistance against rain penetration and is less liable to crack when compared to masonry in cement mortar.
Which of these statements are correct?

A

(i), (ii) and (iii)

B

(i) and (ii)

C

(ii) and (iii)

D

(i) and (iii)

Maximum slenderness ratio of load bearing walls for a dwelling having more than 2 storeys
(i) Shall not exceed 12 if lime mortar is used
(ii) Shall not exceed 18 if cement lime mortar 1 : 2 : 9 is used
(iii) Shall not exceed 24 if cement mortar 1 : 6 is used

A

(i) and (ii) are correct

B

(ii) and (iii) are correct

C

(i) and (iii) are correct

D

(i) and (ii) and (iii) are correct

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

Consider the following statements:
A high lime content in a composite cement-lime mortar results in
(i) Slow hardening
(ii) Quick setting
(iii) Weaker mortar

A

(ii) and (iii) are correct

B

(i) and (ii) are correct

C

(i) and (iii) are correct

D

(i), (ii) and (iii) are correct

In each of the following question below are given some statements followed by some conclusions. Taking the given statements to be true even if they
seem to be at variance from commonly known facts, read all the conclusions and then decide which of the given conclusion logically follows the given statements.
Statements:
I. All stars are white.
II. All white are moon.
III. No moon is blue.
Conclusions:
I. Some moon are stars.
II. No blue is stars.
III. Some white are stars.
IV. Some blue are white.

A

Only conclusion (I), (II) and (III) follow.

B

Only conclusion (III) and (IV) follow.

C

Only conclusion (I), (II) and (IV) follow.

D

Only conclusion (II), (III) and (IV) follow.

For first class building the foundation and plinth shall be of 1st class brickwork in lime mortar or 1:2 cement mortar over lime concrete or 1:6:7 cement concrete.

A

True

B

False

In order to improve the adhesive and tensile properties of the lime mortar, the _________ is added to the lime mortar.

A

Steel flake

B

Rubber gum

C

Carbon fibre

D

Hump

Statements : All green are blue. All blue are white.

Conclusions :
I. Some blue are green.
II. Some white are green.
III. Some green are not white.
IV. All white are blue.

A

Only (I) and (II)

B

Only (I) and (III)

C

Only (I) and (IV)

D

Only (II) and (IV)

E

Only (I) and (III)

In cement mortar and lime mortar __________ is used as fine aggregate.

A

Lime

B

Cement

C

Slaked lime

D

Sand

In order to improve the binding properties of mortar, kind of Fragrant gum ___________ is added to the lime mortar.

A

Rubber

B

Hump

C

Gugal

D

Blowing