INDUSTRIALLY USEFUL MICROBIAL PROCESSES QUIZ

Water retentivity for brick masonry should not be less than

60 %

50 %

80 %

70 %

TRUE ANSWER : ?
YOUR ANSWER : ?

For strengthening a 50 m long and 5 m high straight compound wall built in brick work, which one of the following would be most suitable?

Providing buttresses at certain intervals

Using a richer mortar

Using stronger bricks

Providing a deeper foundation

TRUE ANSWER : ?
YOUR ANSWER : ?

Consider the following statements: The use of relatively weak mortar<br/>1. Will accommodate movements due to loads and, cracking if any, and will be distributed as thin hair cracks which are less noticeable or harmful.<br/>2. Will result in reduction of stresses due to differential expansion of masonry units.

2 alone is correct

1 alone is correct

Both 1 and 2 are correct

Neither 1 nor 2 is correct

TRUE ANSWER : ?
YOUR ANSWER : ?

Consider the following statements:1. Masonry in rich cement mortar though having good strength with high shrinkage is much liable for surface cracks.2. Lime mortar possesses poor workability and poor water retentivity and also suffers high shrinkage.3. 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?

1 and 2

1 and 3

1, 2 and 3

2 and 3

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YOUR ANSWER : ?

If the ratio of center to center spacing of intersecting walls to actual thickness of intersecting wall is more than 20, then the stiffening coefficient for wall proper will be

Between 0 and 1

1

Greater than 1

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YOUR ANSWER : ?

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 is false but R is true

A is true but R is false

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

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

TRUE ANSWER : ?
YOUR ANSWER : ?

If ‘H’ is the height of wall between centers of supports, then the effective height of wall where concrete floors have a bearing on wall irrespective of the direction of span will be

1.0 H

1.5 H

0.75 H

0.85 H

TRUE ANSWER : ?
YOUR ANSWER : ?

Consider the following statements: The use of relatively weak mortar 1. Will accommodate movements due to loads and, cracking if any, and will be distributed as thin hair cracks which are less noticeable or harmful. 2. Will result in reduction of stresses due to differential expansion of masonry units.

2 alone is correct

Both 1 and 2 are correct

Neither 1 nor 2 is correct

1 alone is correct

TRUE ANSWER : ?
YOUR ANSWER : ?

The basic stress in masonry units having height to width ratio of 1.5 may be increased by a factor of

2

1.2

1.6

1.4

TRUE ANSWER : ?
YOUR ANSWER : ?

Assertion A : Limiting value of slenderness ratio for a column is less than that of a wall.Reason R : A column can buckle around either of the two horizontal axes while a wall can buckle around only one axis.Select your answer according to the codes given below:

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

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

A is false but R is true

A is true but R is false

TRUE ANSWER : ?
YOUR ANSWER : ?

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