Question 1

Which of the below is a property of soft wood?

Accepted Answer

A)  Medullary rays are less distinct
B)  Annual rings are less distinct
C)  Dark in colour
D)  Close grained structure A

Question 2

What is the fineness modulus value of a fine sand?

Accepted Answer

A)  
B)  2.2-2.6
C)  
D)  1-2 B

Question 3

Hard wood is strong in tension and weak in compression.

Accepted Answer

A) True 
 B)False  False

Question 4

Which size coarse aggregate is ideal for use in a concrete mix?

Accepted Answer

A)  Smaller
B)  4.75-10mm
C)  Larger
D)  10-20mm

Question 5

Which IS Code gives a classification of commercial timbers and their zonal distribution?

Accepted Answer

A)  IS 620
B)  IS 399
C)  IS 401
D)  IS 190

Question 6

First class bricks are used for:

Accepted Answer

A)  Brick ballast in R.C.C
B)  Boundary walls
C)  Low height walls
D)  Pavements

Question 7

In crushing test on coarse aggregates, what size particle is taken as a sample?

Accepted Answer

A)  Passing 12.5mm IS sieve
B)  Retained on 10mm IS sieve
C)  Passing 10mm and retained on 4.75mm IS sieve
D)  Passing 12.5mm and retained on 10mm IS sieve

Question 8

Graded aggregate contains particles of size:

Accepted Answer

A)  Single grade
B)  4.75mm
C)  Multi grade
D)  <80mm

Question 9

M-Sand has ___________ type of particle shape.

Accepted Answer

A)  Flaky
B)  Round
C)  Angular
D)  Cubical

Question 10

The minimum crushing strength of third class brick is:

Accepted Answer

A)  3.5 N/mm2
B)  7 N/mm2
C)  10 N/mm2
D)  20 N/mm2

Question 11

Exogenous trees are further divided into:

Accepted Answer

A)  3
B)  4
C)  2
D)  5

Question 12

The specific gravity for sand is:

Accepted Answer

A)  2.6
B)  2.65
C)  2.8
D)  2.75

Question 13

Which of the following is not a feature of second class bricks?

Accepted Answer

A)  Have small irregularities
B)  Water absorption is between 20-25%
C)  Rectangular in shape
D)  Free from cracks

Question 14

Which of the following leads to the formation of small pores in brick?

Accepted Answer

A)  Iron pyrites
B)  Pebbles
C)  Organic matter
D)  Alkalis

Question 15

Which of the following is an example of soft wood?

Accepted Answer

A)  Sal
B)  Oak
C)  Deodar
D)  Mahogany

Question 16

How many types of fine aggregates are there based on source?

Accepted Answer

A)  3
B)  2
C)  4
D)  6

Question 17

Burnt bricks can be further classified into how many types?

Accepted Answer

A)  2
B)  4
C)  3
D)  5

Question 18

Unburnt bricks are also called:

Accepted Answer

A)  Dry bricks
B)  Clayey bricks
C)  Kucha bricks
D)  Clamp bricks

Question 19

What is the harmful effect of presents of alkali in brick earth on bricks?

Accepted Answer

A)  Discolourises bricks
B)  Efflorescence
C)  Porous bricks
D)  Flaking

Question 20

Fine Aggregates should pass through which IS sieve?

Accepted Answer

A)  2.35mm
B)  45µ
C)  4.75mm
D)  75µ

Exam 3: Bricks, Trees, and Aggregates