61
Which of the following stone is best suited for construction of piers and abutments of a railway bridge?
A)
Granite
B)
Sand stone
C)
Lime stone
D)
Quartzite
Answer & Solution
Answer: Option
A
A)
Possess 10 to 17 times greater breakage resistance than that of glass of equivalent thickness
B)
Are generally unaffected by most household detergents
C)
Possess the light transmission rate of 93%
D)
All the above
Answer & Solution
Answer: Option
D
63
Wrought iron contains carbon about
A)
1.5% to 5.5%
B)
0.5% to 1.75%
C)
0.1% to 0.25%
D)
None to these
Answer & Solution
Answer: Option
C
64
The usual percentages of clay and metal in cermet are:
A)
50%, 50%
B)
60%, 40%
C)
70%, 30%
D)
80%, 20%
Answer & Solution
Answer: Option
D
65
Good quality stones must
A)
Be durable
B)
Be free from clay
C)
Resist action of acids
D)
All the above
Answer & Solution
Answer: Option
D
66
Spalling hammer is used for
A)
Driving wooden headed chisels
B)
Rough dressing of stones
C)
Carving of stones
D)
Breaking small projection of stones
Answer & Solution
Answer: Option
B
67
In stone masonry, stones (stratified rocks) are so placed that the direction of pressure to the plane of bedding is
A)
Right angles
B)
45°
C)
60°
D)
Parallel
Answer & Solution
Answer: Option
A
68
Chemically, marble is known as
A)
Metamorphic rock
B)
Argillaceous rock
C)
Calcareous rock
D)
Siliceous rock
Answer & Solution
Answer: Option
C
69
Geologically, marble is known as
A)
Sedimentary rock
B)
Igneous rock
C)
Metamorphic rock
D)
Stratified rock
Answer & Solution
Answer: Option
C
70
The proportions of charcoal, saltpetre and sulphur in gun powder by weight, are respectively:
A)
15, 75, 10
B)
75, 10, 15
C)
10, 15, 75
D)
10, 75, 15
Answer & Solution
Answer: Option
A
